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Method for determining transmittance of plate glass

A flat glass, transmittance technology, applied in transmittance measurement and other directions, can solve the problems of inaccurate transmittance, inaccurate transmittance, and large difference in transmittance of glass samples, and achieve fast measurement and measurement results. Accurate, easy-to-use effects

Inactive Publication Date: 2016-05-04
WUHU DONGXU OPTOELECTRONICS EQUIP TECH +2
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When measuring the transmittance of the finished flat glass in the existing method, the transmittance of the glass samples is often different, and the measured transmittance is inaccurate; especially for the non-alkali glass substrate produced by the overflow method , which is the basic material for preparing LCD display products. If the transmittance of the alkali-free glass substrate is measured by the existing method, the measured transmittance will be inaccurate, which will affect the production operation and product quality of downstream products.

Method used

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  • Method for determining transmittance of plate glass
  • Method for determining transmittance of plate glass
  • Method for determining transmittance of plate glass

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0019] Select non-alkali glass substrates without defects such as stones, bubbles and streaks from the production line of non-alkali glass substrates produced by the overflow method;

[0020] Cut the above-mentioned non-alkali glass substrate to obtain 5 pieces of non-alkali glass samples with a size of 45mm×25mm×0.5mm;

[0021] Carry out heat treatment on the above-mentioned alkali-free glass sample, and raise the temperature from room temperature to 740°C at a heating rate of 8°C / min. The speed is reduced from 550°C to 300°C, and then from 300°C to 200°C at a cooling rate of 5°C / min, and finally cooled naturally from 200°C to room temperature to obtain 5 pieces of heat-treated alkali-free glass samples, respectively labeled 1# , 2#, 3#, 4# and 5#;

[0022] Take out the alkali-free glass sample, wipe the glass surface with alcohol and dry it for later use;

[0023] The glass transmittance test instrument selects Shimadzu UV-Vis Spectrophotometer (UV-2550), and uses the abov...

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Abstract

The invention discloses a method for determining the transmittance of plate glass and solves the problem of determining inaccuracy on the transmittance of the plate glass. The method for determining the transmittance of the plate glass comprises the following steps: thermally treating the plate glass to be determined for eliminating internal residual stress in the plate glass; cleaning the surface of the plate glass; determining the transmittance of the plate glass by adopting a glass transmittance tester to obtain the transmittance of the plate glass. The method has the advantages of simple operation, rapidness in determining and accurate determining result when determining the transmittance of the plate glass.

Description

technical field [0001] The invention relates to the field of glass performance measurement, in particular to a method for measuring the transmittance of flat glass. Background technique [0002] In the flat glass industry, the transmittance represents the transparency of the glass, which directly affects the display quality of downstream products. Among them, the alkali-free glass substrate produced by the overflow method is the free surface of the glass, with few defects and high transmittance. It is the best substrate material for LCD and other display products. Transmittance has more stringent requirements. [0003] The transmittance generally means that when light passes through the glass, because part of the light energy is absorbed by the glass, the light energy passing through the glass is reduced, and the absorption of light by the substance is quantitatively explained by the Beer-Lambert law, that is, the formula T=I / I0 indicates that T is the transmittance, I0 i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/59
CPCG01N21/59
Inventor 李瑞佼王世岚王丽红胡恒广李媚寰
Owner WUHU DONGXU OPTOELECTRONICS EQUIP TECH
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