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Method using dilatometer to measure electronic flat glass shrinkage

A technology of flat glass and test method, applied in the direction of thermal expansion coefficient of materials, etc., can solve the problems of power failure of electronic display, large error of test results, affecting the quality of electronic products, etc., achieve uniform heating, accurate calculation of shrinkage value, and simple operation Effect

Inactive Publication Date: 2016-02-03
海南海控特玻科技有限公司
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Problems solved by technology

[0002] Glass shrinkage refers to the shrinkage in the length direction of the glass during the cooling process after heating as a percentage of the length of the glass before heating; the electronic flat glass used for displays must strictly control the shrinkage of the glass. If the test is not accurate, control No, when the shrinkage rate does not match the electronic device, the electronic display produced may have a power failure problem, which seriously affects the quality of the electronic product; therefore, accurate testing of the glass shrinkage rate is particularly important
[0003] At present, the shrinkage rate of electronic flat glass is tested by using a vernier caliper to test the shrinkage of the glass. The data can only be accurate to 10um, and there is a problem of large error in the test results.

Method used

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  • Method using dilatometer to measure electronic flat glass shrinkage
  • Method using dilatometer to measure electronic flat glass shrinkage
  • Method using dilatometer to measure electronic flat glass shrinkage

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Embodiment Construction

[0018] The present invention is described in conjunction with accompanying drawing and specific embodiment:

[0019] A method utilizing a dilatometer to test shrinkage of electronic flat glass, said test method comprising the steps of:

[0020] 1) Take a piece of electronic flat glass to be tested, divide the sample to be tested into two pieces A and B along the length direction, and grind the two ends of the electronic flat glass A and B in the length direction, and the flatness is A and L B , and convert the length unit to μm, and the decimal is accurate to one digit;

[0021] 2) Enter the sample name at the "Name" of the "General settings" interface on the dilatometer, and input the sample length L at the "Length" A , and set the heating curve system on the "Temperature profile" interface: heat up at a heating rate of 5°C / min, the temperature rises to 580°C, and then keep at this temperature for 5 minutes to make the glass evenly heated, and finally set the temperature at ...

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Abstract

The invention belongs to the technical field of glass performance testing, and relates to a method using a dilatometer to measure the electronic flat glass shrinkage. The method comprises the following steps: measuring the length of a sample to be measured by a screw micrometer, then placing the sample into a dilatometer, carrying out heating-cooling-heating according to a certain temperature, cooling the sample to the room temperature; reading the shrinkage amount after the sample is cooled to the room temperature and the sample temperature becomes stable, using the average value of last six values so as to minimize the error, and finally calculating the glass shrinkage. According to the provided method, the built-in software testing function of the dilatometer can record the change of length after heating, thus the glass shrinkage can be calculated, and the method has the characteristics of simple operation and high measurement precision.

Description

technical field [0001] The invention belongs to the technical field of glass performance testing, and mainly relates to a method for testing the shrinkage rate of electronic flat glass by using a dilatometer. Background technique [0002] Glass shrinkage refers to the shrinkage in the length direction of the glass during the cooling process after heating as a percentage of the length of the glass before heating; the electronic flat glass used for displays must strictly control the shrinkage of the glass. If the test is not accurate, control No, when the shrinkage rate does not match the electronic device, the produced electronic display may have a power failure problem, which seriously affects the quality of the electronic product; therefore, accurate testing of the glass shrinkage rate is particularly important. [0003] At present, in the test of the shrinkage rate of electronic flat glass, a vernier caliper is used to test the shrinkage of the glass, and the data can only...

Claims

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Application Information

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IPC IPC(8): G01N25/16
Inventor 姜宏赵会峰潘国治周莉崔永红鲍思权苏俊
Owner 海南海控特玻科技有限公司
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