81.040.10 原材料和未加工的玻璃 标准查询与下载



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This standard specifies a method of test for determining the hydrolytic resistance of glass grains at 98 degree and a classification according to the test results obtained by the test method of this standard. The method is intended for use on the less hydrolytic resistant types of glass.

Glass; hydrolytic resistance of glass grains at 98 °C; method of test and classification; identical with ISO 719:1985

ICS
81.040.10
CCS
Q30
发布
1989-12
实施

This standard specifies a method (autoclave method) of test for determining the hydrolytic resistance of glass grains at 121 degree and a classification according to the test result obtained by the test method of this standard. The methods is intended for use on the more hydrolytic resistant types of glass.

Glass; Hydrolytic resistance of glass grains at 121 °C; method of test and classification; identical with ISO 720:1985

ICS
81.040.10
CCS
Q30
发布
1989-12
实施

This part of ISO 7884 specifies a method of determining the working point of glass by means of the sinking bar viscometer. This method has been found useful for characterizing the low-viscosity range of glass working. This viscometric fixed point can be used in determining the viscosity-temperature relation-ship (see ISO 7884-1).

Viscosity and viscometric fixed points of glass. Method for the determination of working point by sinking bar viscometer

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

Thermal expansion method.

Viscosity and viscometric fixed points of glass. Method for the determination of (dilatometric) transformation temperature

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

Applies to glasses of normal bulk-production compositions but not to fused silica, glass ceramics or other glasses of low linear thermal expansion coefficients.

Method for determination of the coefficient of mean linear thermal expansion of glass

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

This part of ISO 7884 gives rules for characterizing glass as a liquid (or liquid-analogue deformable) material with respect to its dynamic viscosity η and viscosity-temperature relationship, if it behaves as a Newtonian fluid.NOTE —Non-Newtonian behaviour may be observed sometimes in opaque glasses, vitreous enamels or highly crystallizing glasses (glass ceramics).

Viscosity and viscometric fixed points of glass. Recommendations for use in the determination of viscosity and viscometric fixed points

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

This part of ISO 7884 specifies a method of determining the dynamic viscosity of glass by measuring the elongation of a glass fibre under a defined uniaxial stress. In addition, the viscosity-temperature relationship and the dependence of the viscosity on the thermal history can be determined.NOTE —Using this method, all parts of the tested material are subject to the same mechanical stress when the shape of the fibre is correct, the glass is homogeneous and isotropic, and the influence of gravity on the fibre itself can be neglected. The deformation is a pure elongation instead of a simple shear. Without major uncertainty, the determi-nation of the shear viscosity by an elongation experiment is possible only when the material behaves like a Newtonian fluid.The knowledge of equilibrium viscosities in the low-tempera-ture range is useful for fitting suitable viscosity-temperatureformulae over the whole range of glass viscosities and for a more detailed survey on thermal history influences than can be derived from fixed-point methods alone.note:* 1 dPa·s=1 dN·s/m=1 P(P is the symbol for poise)

Viscosity and viscometric fixed points of glass. Method for the determination of viscosity by fibre elongation viscometer

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

This part of ISO 7884 specifies a method of determining the dynamic viscosity of glass on a rod-shaped test specimen (called a beam) supported at its ends. The viscous deflection rate of the beam is measured under a given load at the midpoint between the supports. In addition the viscosity-temperature relationship and the dependence of the viscosity on the thermal history of the sample can be determined.The viscosity range covered by this method extends from 10 to 10 dPa·s, corresponding to measuring temperatures be-tween about 900 and 400 ?for all glasses of normal bulk-production compositions.The procedures are limited to small deflections and to small deflection rates (see 3.6).NOTE —During beam bending, elongation flows of both signs occur (zero passage within the neutral plane). The determination of shearviscosity is possible only with Newtonian or linear-viscoelastic behaviour of the glass. The procedures are sensitive to interference by devitrification of the sample. With viscosities above 10 dPa·s the ad-justment of the structure equilibrium within the glass is perceptibly delayed with respect to the temperature setting. For tests within this range it should be agreed whether it is necessary to wait for the final equilibrium viscosity at a given temperature or to take the viscosity value corresponding to a conventional temperature-time programme (see 6.3).note:* 1 dPa·s = 1 dN·s/m = 1 P(P is the symbol for poise)

Viscosity and viscometric fixed points of glass. Method for the determination of viscosity by beam bending

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

This part of ISO 7884 specifies a method of determining the softening point of a glass. It has been found useful as a control test to indicate changes in composition, for specification ac-ceptance and for providing information in research and development work with glass.

Viscosity and viscometric fixed points of glass. Method for the determination of softening point

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

This part of ISO 7884 specifies a method of determining the an-nealing point and the strain point of a glass by beam bending. These values have been found useful for specifying the cooling programme in the production of glassware. The annealing point and strain point include a well-defined temperature decrease during the measurement.At temperatures corresponding to the annealing and strain points, the viscosity of glass is highly time dependent. Hence, any viscosities that might be derived or inferred from measurements carried out according to this part of ISO 7884 cannot be assumed to represent equilibrium structural con-ditions. Therefore, the insertion of the strain point into the VFT-equation (see ISO 7884-1) is always impossible. The inser-tion of the annealing point causes in some cases marked failures.NOTE —The annealing and strain points by beam bending can also be determined using devices as specified in ISO 7884-4, but these devices are more expensive and the procedures lead to some viscosity-temperature and viscosity-time relationships besides the fixed points. In this part of ISO 7884, however, the device and procedure are restricted to the fixed-point determination.note:* 1 dPa·s = 1 dN·s/m = 1 P(P is the symbol for poise)

Viscosity and viscometric fixed points of glass. Method for the determination of annealing point and strain point by beam bending

ICS
81.040.10
CCS
Q30
发布
1989-01-31
实施
1989-01-31

This part of ISO 7884 specifies a method of determining, by means of rotation viscometers, the dynamic viscosity of glass and, in particular, the viscosity-temperature relationship at any temperature or viscosity within the range of measurement. This covers the ranges of viscosity for melting, refining and working of glass.This method allows for continuous measurements and for measurements under various shearing stresses (i.e. for the determination of flow curves) in order to check whether or not the glass behaves as a Newtonian liquid.Dependent on the particular viscosity-temperature relationship of the glass tested, the viscosity range covered by this method extends approximately from 10 to 10 dPa·s in the tempera-ture range from about 1 600 to 600 ? the torque necessary ranging from 0,1 to 20 N·mm according to the construction of the apparatus. The method is applicable if the rotational fre-quency does not exceed 8 s; however, at rotational frequen-cies above 1 s it should be ascertained that inertia forces are negligible.note:* 1 dPa·S = 1dN·s/m= 1 P(P is the symbol for poise)

Viscosity and viscometric fixed points of glass. Method for the determination of viscosity by rotation viscometers

ICS
81.040.10
CCS
Q30;N51
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Recommendations for use in the determination of viscosity and viscometric fixed points

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Method for the determination of viscosity by fibre elongation viscometer

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Method for the determination of viscosity by beam bending

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Method for the determination of working point by sinking bar viscometer

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Method for the determination of softening point

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Method for the determination of annealing point and strain point by beam bending

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Method for the determination of viscosity by rotation viscometers

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Viscosity and viscometric fixed points of glass. Method for the determination of (dilatometric) transformation temperature

ICS
81.040.10
CCS
发布
1989-01-31
实施
1989-01-31

Quarts sand for transparant glass manufacture, Specification and test method

ICS
81.040.10
CCS
发布
1989
实施



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