83.080.20 (Thermoplastic materials) 标准查询与下载

ASTM D1531-01 用液体位移法测定介电常数与耗散系数的标准试验方法

1.1 These test methods provide techniques for the determination of the relative (Note 1) permittivity and the dissipation factor of solid insulating materials by fluid (Note 1) displacement. Note 1--In common usage, the word "relative" is frequently dropped.Note 2--The word "fluid" is a commonly used synonym for "liquid'''' and yet a gas is also a fluid. In these test methods the words fluid and liquid appear as synonyms, but the word fluid is also used to show that liquid is not all that is meant.1.2 Test Method A is especially suited to the precise measurements on polyethylene sheeting at 23oC and at frequencies between 1 kHz and 1 MHz. It may also be used at other frequencies and temperatures to make measurements on other materials in sheet form.1.3 Test Method B is limited to the frequency range of available guarded bridges. It is especially suited to measurements on very thin films since it does not require determination of the thickness of the specimen. The test method provides an estimate of the thickness of thin films which is more accurate and precise than thickness measurements obtained by other means.1.4 Test Method B is also useful for measurements of polymer sheeting up to 2 mm thickness.1.5 These test methods permit calculation of the dissipation factor of the specimens tested.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific precautionary statement, see Note 3.1.7 The values stated in SI units are to be regarded as the standard.

Standard Test Methods for Relative Permittivity (Dielectric Constant) and Dissipation Factor by Fluid Displacement Procedures

ASTM D3679-01b 硬质聚氯乙烯档板标准规范

1.1 This specification establishes requirements and test methods for the materials, dimensions, warp, shrinkage, impact strength, expansion, appearance, and windload resistance of extruded single-wall siding manufactured from rigid (unplasticized) PVC compound. Methods of indicating compliance with this specification are also provided.1.2 Rigid PVC recycled plastic may be used in this product in accordance with the requirements in Section 4. 1.3 Rigid (unplasticized) PVC soffit is covered in Specification D 4477. 1.4 Siding produced to this specification shall be installed in accordance with Practice D 4756. Reference shall also be made to the manufacturer's installation instructions for the specific product to be installed. Note 18212;Information with regard to siding maintenance shall be obtained from the manufacturer. 1.5 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information purposes only. 1.6 The following precautionary caveat pertains to the test method portion only, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There are no ISO standards covering the primary subject matter of this specification.

Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding

ASTM C1147-01(2006) 耐化学腐蚀热塑(性)塑料的短期拉伸焊接强度测定的标准实施规程

The mechanical performance of welded thermoplastic structures is largely dependent on the quality of the welding operation. Fabricators should determine that the proper welding procedures are being followed and that welders maintain their proficiency. Results from this practice are indicative of skill in proper welding procedures for different thermoplastic materials and the use of appropriate welding equipment. If the welded test specimens have short term weld factors that meet or exceed the minimums as set forth in this practice, or as agreed to by supplier and user, it may be concluded that, with the same degree of skill and diligence by the welder, acceptable welds should be obtained in fabricated structures.1.1 This practice covers the preparation and evaluation of joints between two pieces of weldable grades of thermoplastic materials, backed and unbacked, (such as those shown in ) up to 2 in. (50 mm) in thickness.1.2 Since there are numerous new technologies and techniques constantly being developed for plastic welding, there are no profiles and procedures that can be considered as standard for all plastics at various thicknesses. This practice is not intended to define profiles and procedures; however, it is intended to establish methods to evaluate minimum short term weld factors to be achieved by the welder for the respective plastics.1.3 Weld procedures used for test pieces should reflect procedures to be used in actual fabrication.1.4 Welding methods to be used could include machine welding, extrusion welding, and hot gas welding.1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

Standard Practice for Determining the Short Term Tensile Weld Strength of Chemical-Resistant Thermoplastics

ASTM D6645-01(2010) 红外光谱法测定聚乙烯中甲基(共聚单体)含量的标准试验方法

This method determines the number of branches (that is, comonomer content) in copolymers of ethylene with 1-butene, 1-hexene or 1-octene. This information can be correlated with physical properties such as melting point, density, and stiffness, all of which depend on the degree of crystallinity of the polymer. Differences in the comonomer content thus may have a significant effect on the final properties of products made from these resins.1.1 This test method covers the determination of methyl groups (that is, comonomer content) in polyethylenes by infrared spectrophotometry. The test method is applicable to copolymers of ethylene with 1-butene, 1-hexene, or 1-octene having densities above 900 kg/m3. High-pressure low-density polyethylenes (LDPE) and terpolymers are excluded. 1.2 The values stated in SI units, based on , are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;There is no known ISO equivalent to this standard.

Standard Test Method for Methyl (Comonomer) Content in Polyethylene by Infrared Spectrophotometry

ASTM C1147-01 耐化学腐蚀热塑(性)塑料的短期拉伸焊接强度测定的标准实施规程

1.1 This practice covers the preparation and evaluation of joints between two pieces of weldable grades of thermoplastic materials, backed and unbacked, (such as those shown in Table 1) up to 2 in. (50 mm) in thickness. 1.2 Since there are numerous new technologies and techniques constantly being developed for plastic welding, there are no profiles and procedures that can be considered as standard for all plastics at various thicknesses. This practice is not intended to define profiles and procedures; however, it is intended to establish methods to evaluate minimum short term weld factors to be achieved by the welder for the respective plastics. 1.3 Weld procedures used for test pieces should reflect procedures to be used in actual fabrication. 1.4 Welding methods to be used could include machine welding, extrusion welding, and hot gas welding. 1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.

Standard Practice for Determining the Short Term Tensile Weld Strength of Chemical-Resistant Thermoplastics

ASTM D4101-01 聚乙烯塑料喷射和挤压材料的标准规范

1.1 This specification covers propylene plastic materials suitable for injection molding and extrusion. Polymers consist of propylene homopolymer, propylene copolymers, and propylene-elastomer compounded with or without the addition of impact modifiers (ethylene-propylene rubber, polyisobutylene rubber, and butyl rubber), colorants, stabilizers, lubricants, or reinforcements. 1.2 This specification allows for the use of those propylene plastic materials that can be recycled, reconstituted, and reground, provided that: (1) the requirements as stated in this specification are met, and (2) the material has not been modified in any way to alter its conformance to food contact regulations or similar requirements. The proportions of recycled, reconstituted, and reground material used, as well as the nature and the amount of any contaminant, cannot be practically covered in this specification. It is the responsibility of the supplier and the buyer of recycled, reconstituted, and reground materials to ensure compliance. (See Guide D5033.) 1.3 The values stated in SI units are to be regarded as the standard. Note 18212;The properties included in this specification are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specific applications. These will be designated by using the suffixes given in Section 1. 1.4 The following safety hazards caveat pertains only to the test methods portion, Section 13, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There is no similar or equivalent ISO standard.

Standard Specification for Polypropylene Injection and Extrusion Materials

ASTM D1238-01e1 用挤压塑性计测定热塑性塑料熔化流率的标准试验方法

1.1 This test method covers measurement of the rate of extrusion of molten resins through a die of a specified length and diameter under prescribed conditions of temperature, load, and piston position in the barrel as the timed measurement is being made. 1.2 Procedure A is a manual cutoff operation based on time used for materials having flow rates that fall generally between 0.15 and 50 g/10 min. Procedure B is an automatically timed flow rate measurement used for materials having flows from 0.50 to 900 g/10 min. By both procedures, the piston travel is generally the same during the timed measurement; the piston foot is about 46 and 20.6 mm above the die. Comparable flow rates have been obtained by these procedures in interlaboratory round-robin measurements of several materials described in 12.1. Provision is made for calculation of melt volume-flow rate as well as melt mass-flow rate.Note 18212;Round-robin testing indicates this test method may be suitable at flow rates up to 1500 g/10 min if the timing clock resolves the elapsed time to the nearest 0.01 s.Note 28212;This test method and ISO 1133-1991 are technically equivalent. 1.3 This standard does not purport to address the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Note 10, Note 26, and Note 29.

Standard Test Method for Melt Flow Rates of Thermoplastics by Extrusion Plastometer

ASTM D1693-01 乙烯塑料的环境应力破裂的标准试验方法

1.1 This test method covers the determination of the susceptibility of ethylene plastics, as defined in Terminology D 883, to environmental stress-cracking when subjected to the conditions herein specified. Under certain conditions of stress and in the presence of environments such as soaps, wetting agents, oils, or detergents, ethylene plastics may exhibit mechanical failure by cracking. 1.2 The values stated in SI units are to be regarded as the standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1- There is no similar or equivalent ISO standard.

Standard Test Method for Environmental Stress-Cracking of Ethylene Plastics

ASTM D5227-01 测量聚烯烃可提取正乙烷含量的标准试验方法

FDA requirements for maximum extractables are specified for resin and uses. This test method provides a means to determine the amount of hexane-soluble low molecular weight material present in polyolefins. It is applicable to resins containing greater than 0.20 % extractables.1.1 This test method describes an extraction/gravimetric procedure for determination of the amount of hexane soluble low molecular weight material present in polyethylene, polypropylene, ethylene-propylene copolymers, and ethylene-vinyl acetate copolymers. This test method is a modification of the Food and Drug Administration (FDA) procedure for determining hexane extractables of polyolefins. This test method is based upon the presumption that the weight of the residue extract present in the solvent is equal to the amount extracted from the film sample and could therefore be quantified by measuring the weight loss of the extracted film, eliminating the complex and time-consuming evaporation process described in 21 CFR 177.1520. 1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. 1.3 The values stated in SI units are to be regarded as the standard. Units used in 21 CFR 177.1520 are aslo used in this test methhod. Units are in conformance with Federal Code 21 CFR 177.1520, from which this test method is derived.Note 1--There is no similar or equivalent ISO standard.

Standard Test Method for Measurement of Hexane Extractable Content of Polyolefins

ASTM D4101-01a 聚乙烯塑料喷射和挤压材料的标准规范

1.1 This specification covers propylene plastic materials suitable for injection molding and extrusion. Polymers consist of propylene homopolymer, propylene copolymers, and propylene-elastomer compounded with or without the addition of impact modifiers (ethylene-propylene rubber, polyisobutylene rubber, and butyl rubber), colorants, stabilizers, lubricants, or reinforcements. 1.2 This specification allows for the use of those propylene plastic materials that can be recycled, reconstituted, and reground, provided that: (1) the requirements as stated in this specification are met, and (2) the material has not been modified in any way to alter its conformance to food contact regulations or similar requirements. The proportions of recycled, reconstituted, and reground material used, as well as the nature and the amount of any contaminant, cannot be practically covered in this specification. It is the responsibility of the supplier and the buyer of recycled, reconstituted, and reground materials to ensure compliance. (See Guide D5033.) 1.3 The values stated in SI units are to be regarded as the standard. Note 18212;The properties included in this specification are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specific applications. These will be designated by using the suffixes given in Section 1. 1.4 The following safety hazards caveat pertains only to the test methods portion, Section 13, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There is no similar or equivalent ISO standard.

Standard Specification for Polypropylene Injection and Extrusion Materials

ASTM D5204-01 聚酰胺-酰亚胺铸模和挤压材料的标准分类体系

1.1 This classification system covers polyamide-imide materials suitable for injection molding and extrusion.1.2 The properties included in this classification system are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specialized applications. These may be specified by using suffixes as given in Section 5.1.3 This standard allows for the use of recycled materials provided that specification requirements based upon this classification system are met.1.4 This classification system and subsequent line call-out (specification) is intended to be a means of calling out plastics materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection should be made by those having expertise in the plastics field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the inherent properties of the material other than those covered by this classification, and the economics.1.5 The values stated in SI units are to be regarded as the standard. (Reporting in inch-pound units is acceptable.)Note 18212;There is no equivalent or similar ISO standard.1.6 The following precautionary caveat pertains only to the test methods portion, Section 11, of this classification system: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Classification System for Polyamide-Imide (PAI) Molding and Extrusion Materials

ASTM D5630-01 热塑性塑料中灰分含量的标准试验方法

1.1 This test method was developed to determine the inorganic content of plastics by destructive ashing procedures. Ash levels of 0.01 % or above are covered by this test method.1.2 These ashing procedures are used only to quantify the residual solids in the polymer and can not be used to identify the individual chemical components of the ash, qualitatively.1.3 This test method is limited to those materials (including glass) that are stable to 900176;C. Test Method D 2584 is recommended for unknown samples, and in instances where fusion of the inorganic portions may be of concern.1.4 Fluorinated polymers and polymers containing halogenated components have not been included in these procedures.1.5 Two procedures for determining the inorganic residue in plastics are listed as follows:1.5.1 Procedure A Muffle-Furnace Technique8212; For 5 - 50 gram samples. Samples are flamed over a burner prior to being ashed in a muffle furnace.1.5.2 Procedure B Rapid-Ash Muffle-Furnace Technique8212; For 5 - 50 gram samples. Samples are ignited and ashed in a muffle furnace. Note 18212;For more efficient ashing, the plastic sample should be in the form of powder or pellet.Note 28212;Procedure B is similar to ISO 3451/1-1981(E).1.6 The values stated in SI units are to be regarded as the standard.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. See Section 9 for specific precautionary statements.

Standard Test Method for Ash Content in Thermoplastics

ASTM D2765-01(2006) 交联乙烯塑料的凝胶含量和膨胀系数的标准试验方法

Many important properties of crosslinked ethylene plastics vary with the gel content. Hence, determination of the gel content provides a means of both controlling the process and rating the quality of finished products. Extraction tests permit verification of the proper gel content of any given crosslinked ethylene plastic and they also permit comparison between different crosslinked ethylene plastics, including those containing fillers, provided that, for the latter, the following conditions are met: 5.2.1 The filler is not soluble in either decahydronaphthalene or xylenes at the extraction temperature. 5.2.2 The amount of filler present in the compound either is known or can be determined. 5.2.3 Sufficient crosslinking has been achieved to prevent migration of filler during the extraction. Usually it has been found that, at extraction levels up to 50 %, the extractant remains clear and free of filler. Since some oxidative degradation of the material can occur at the reflux temperature of the extractants, a suitable antioxidant is added to the extractant to inhibit such degradation. Before proceeding with this test method, reference should be made to the specification of the material being tested. Any test specimen preparation, conditioning, dimensions, or testing parameters, or a combination thereof, covered in the materials specification shall take precedence over those mentioned in this test method. If there are no material specifications, then the default conditions apply.1.1 The gel content (insoluble fraction) produced in ethylene plastics by crosslinking can be determined by extracting with solvents such as decahydronaphthalene or xylenes. Such extraction test methods are described herein. They are applicable to crosslinked ethylene plastics of all densities, including those containing fillers, and all provide corrections for the inert fillers present in some of those compounds.1.2 Test Method A, which permits most complete extraction in least time, is to be used for referee tests, but two alternative nonreferee Test Methods B and C are also described. The first of these differs from the referee test method only in sample preparation; that is, it requires use of shavings taken at selected points in cable insulation, for example, rather than the ground sample required by the referee test method. Because the shaved particles are larger, less total surface per sample is exposed to the extractant, so this test method ordinarily yields extraction values about 1 to 2 % lower than the referee method. The second of the alternative test methods requires that a specimen in one piece be extracted in xylenes at a constant temperature of 110C. At this temperature and with a one-piece specimen, even less extraction occurs (from 3 to 9 % less than the referee test method) but swell ratio (a measure of the degree of crosslinking in the gel phase) can be determined.1.3 Extraction tests can be made on articles of any shape. They have been particularly useful for electrical insulations since specimens may be selected from those portions of the insulation most susceptible to insufficient crosslinking.1.4 The values stated in SI units are to be regarded as standard. The inch-pound units in brackets are for information only. ISO 10147 is similar to this test, but is not equivalent.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Specific precautionary statements are given in Sections , , and .

Standard Test Methods for Determination of Gel Content and Swell Ratio of Crosslinked Ethylene Plastics

ASTM D4066-01a 尼龙注入及挤压材料的标准分类系统

1.1 This classification system covers nylon materials suitable for injection molding and extrusion. Some of these compositions are also suitable for compression molding and application from solution.1.2 The properties included in this classification system are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specialized applications. These may be specified by using the suffixes as given in Section 5.1.3 This classification system and subsequent line call-out (specification) are intended to provide a means of calling out plastic materials used in the fabrication of end items or parts. It is not intended for the selection of materials. Material selection should be made by those having expertise in the plastic field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, the costs involved, and the inherent properties of the material other than those covered by this classification system.1.4 The values stated in SI units are to be regarded as the standard.1.5 The following precautionary caveat pertains only to the test methods portion, Section 11, of this classification system. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Note 18212;This classification system is similar to ISO 1874-1/-2 1993, although the technical content is significantly different.Note 28212;This classification system is being revised to include international 4-mm specimens and test procedures as the standard for compliance. The 3.2-mm specimens; test methods; and Tables PA, A, and B are included in Appendix X3 as a reference for those wishing to use them. It is recommended that the material manufacturer be consulted on all call-outs against this classification system.

Standard Classification System for Nylon Injection and Extrusion Materials (PA)

ASTM D1786-01(2006)e1 甲苯二异氰酸盐标准规范

1.1 This specification covers toluene diisocyanate used as an ingredient in the production of polyurethane cellular materials. The properties included in this specification are those required to characterize toluene diisocyanate. Other requirements may become necessary and will be added as the necessary test methods become available.The following precautionary caveat pertains only to the test methods portion, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.Note 1There is no equivalent ISO standard.

Standard Specification for Toluene Diisocyanate

ASTM D5155-01 聚氨酯原材料的标准试验方法:芳香族异氰酸酯中异氰酸酯含量的测定

1.1 These test methods measure the isocyanate content of aromatic isocyanates used as polyurethane raw materials.1.1.1 Test Method A8212;Unheated toluene-dibutylamine determines the amount of toluene diisocyanate in refined toluene-2,4-diisocyanate and toluene-2,6-diisocyanate, or mixtures of the two. Other isomers, if present, will be included in the determination. This test method may also be applied to other isocyanates of suitable reactivity and solubility.1.1.2 Test Method B8212;Heated toluene-dibutylamine determines the amine equivalent of crude or modified isocyanates derived from toluene diisocyanate, methylenebis-(4-phenylisocyanate), and polymethylene polyphenylisocyanate.1.1.3 Test Method C8212;Unheated trichlorobenzene-toluene-dibutylamine determines the isocyanate content of crude or modified isocyanates derived from toluene diisocyanate, methylene-bis-(4-phenylisocyanate), and polymethylene polyphenylisocyanate. This test method can also be used to assay isomer mixtures of toluene diisocyanate and methylene- bis-(phenylisocyanate).1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.For specific warning and precautionary statements, see Note 1.Note 28212;Method C of this test method is equivalent to Method B of ISO 14896.

Standard Test Methods for Polyurethane Raw Materials Determination of the Isocyanate Content of Aromatic Isocyanates

ASTM D6394-01 磺基塑料(SP)的标准规范

1.1 This specification covers the classification of sulfone plastics suitable for injection molding and extrusion. 1.2 The properties included in this specification are those required to identify the compositions covered. There may be other requirements necessary to identify particular characteristics important to specialized applications. These will be specified by using the suffixes in Section 5. 1.3 This specification is intended to be a means of calling out sulfone plastics used in the fabrication of end items or parts. Material selection should be made by those having expertise in the plastics field after careful consideration of the design and the performance required of the part, the environment to which it will be exposed, the fabrication process to be employed, and the inherent properties of the material other than those covered by this specification. 1.4 Sulfone polymers, being thermoplastic, are reprocessable and recyclable. This specification allows for the use of those sulfone polymer materials, provided that any specific requirements are met. 1.5 The following safety hazards caveat pertains only to the test method portion, Section 11, of this standard: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 18212;Reference Guide D 5033 for information and definitions related to recycled plastics. Note 28212; There is no equivalent ISO standard.

Standard Specification for Sulfone Plastics (SP)

ASTM D3679-01c 硬质聚氯乙烯档板标准规范

1.1 This specification establishes requirements and test methods for the materials, dimensions, warp, shrinkage, impact strength, expansion, appearance, and windload resistance of extruded single-wall siding manufactured from rigid (unplasticized) PVC compound. Methods of indicating compliance with this specification are also provided.1.2 Rigid PVC recycled plastic may be used in this product in accordance with the requirements in Section 4. 1.3 Rigid (unplasticized) PVC soffit is covered in Specification D 4477. 1.4 Siding produced to this specification shall be installed in accordance with Practice D 4756. Reference shall also be made to the manufacturer's installation instructions for the specific product to be installed. Note 18212;Information with regard to siding maintenance shall be obtained from the manufacturer. 1.5 The values stated in inch-pound units are to be regarded as the standard. The SI units given in parentheses are for information purposes only. 1.6 The following precautionary caveat pertains to the test method portion only, Section 6, of this specification: This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 28212;There are no ISO standards covering the primary subject matter of this specification.

Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Siding

ASTM D5930-01 用瞬变线源技术对塑料热导性的标准试验方法

The relative simplicity of the test method makes it applicable for a wide range of materials (4, 5). The technique is capable of fast measurements, making it possible to take data before the materials suffer thermal degradation. Alternatively, it is possible to study the effect of compositional changes such as chemical reaction or aging (6). Short measurement times permit generation of large amounts of data with little effort. The line-source probe and the accompanying test specimen are small in size, making it possible to subject the sample to a wide range of test conditions. Because this test method does not contain a numerical precision and bias statement, it shall not be used as a referee test method in case of dispute.1.1 This test method covers the determination of the thermal conductivity of plastics over a temperature range from -40 to 400oC. The thermal conductivity of materials in the range from 0.08 to 2.0 W/m.K can be measured covering thermoplastics, thermosets, and rubbers, filled and reinforced. 1.2 The values stated in SI units are to be regarded as standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1--There is no current ISO document that duplicates this test method.

Standard Test Method for Thermal Conductivity of Plastics by Means of a Transient Line-Source Technique

ASTM D4591-01 用差式扫描量热法测定含氟聚合物温度和转化热的标准试验方法

1.1 This test method defines conditions for the use of differential scanning calorimetry (DSC) with fluoropolymers. It covers the use of DSC analyses with the fluoropolymers, PTFE, PVDF, PCTFE, and PVF and their copolymers PFA, FEP, ECTFE, EFEP, VDF/HFP, VDF/TFE/HFP, VDF/CTFE. The test method is applicable to the analysis of powders as well as samples taken from semi-finished or finished products. The nature of fluoropolymers is such that special procedures are needed for running DSC analysis and interpreting the results.1.2 The values stated in SI units as detailed in IEEE/ASTM SI 10 are to be regarded as the standard.1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Note 1--There is currently no ISO standard that duplicates this test method. Pending ISO 12086-1 and ISO 12086-2 cover similar testing and reference this test method for testing conditions.

Standard Test Method for Determining Temperatures and Heats of Transitions of Fluoropolymers by Differential Scanning Calorimetry