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A kind of measuring method of pdp glass shrinkage

A measurement method and shrinkage rate technology, applied in the direction of thermal expansion coefficient of materials, etc., can solve the problems of large measurement error, bursting of measurement samples, etc., and achieve the effects of accurate and reliable data, uniform thermal shrinkage, and simple and convenient measurement

Active Publication Date: 2015-08-05
SICHUAN XUHONG OPTOELECTRONICS TECH
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the technical defect that the existing measurement method has large measurement errors and may cause the measurement sample to burst, the invention discloses a method for determining the shrinkage rate of PDP glass

Method used

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  • A kind of measuring method of pdp glass shrinkage

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Embodiment Construction

[0024] The specific embodiment of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The assay method of PDP glass shrinkage of the present invention comprises the following steps, step 1. draws measurement line on PDP glass sample, cuts PDP glass sample and is divided into reference sheet and measurement sheet, and cutting line divides measurement line; Step 2. Place the measuring piece in the closed cavity surrounded by two porcelain boats, and the two ends and sides of the measuring piece and the inner wall of the porcelain boat are filled with flexible high-temperature resistant materials; Step 3. The porcelain boat and the measuring piece The whole is heated according to the preset heating curve; step 4. After the heating is completed, anneal and cool the measuring sheet, compare the measuring line displacement of the reference sheet and the measuring sheet, and calculate the shrinkage rate.

[0026] Gla...

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Abstract

The invention discloses a method for measuring shrinkage factor of PDP (Plasma Display Panel) glass. The method comprises the following steps: step 1, marking out a measuring line on a PDP glass sampler sheet, and cutting the PDP glass sampler wafer into a reference sheet and a measuring sheet, wherein the cutting line cuts the measuring line; step 2, vertically placing the measuring sheet, arranging porcelain boats on the top and the bottom of the measuring sheet respectively, sealing and surrounding the measuring sheet, and filling flexible high-temperature resistant materials between the upper and the lower ends of the measuring sheet and the inner walls of the porcelain boats and between the side edge of the measuring sheet and the inner walls of the porcelain boats; step 3, heating the porcelain boats and the measuring sheet according to a preset heating curve in an integrated manner; step 4, carrying out annealing cooling to the measuring sheet after heating, comparing the displacement of the measuring line of the measuring reference sheet and the measuring sheet and calculating the shrinkage factor. The method for measuring the shrinkage factor of PDP glass can solve the problem of non-uniform heating and enables the whole piece of glass to be in a stable temperature environment during glass heat treatment to achieve uniform heat shrinkage effect, and furthermore, the measured shrinkage factor data is accurate and reliable.

Description

technical field [0001] The invention belongs to the field of glass manufacture and relates to a method for measuring the shrinkage rate of PDP glass. Background technique [0002] At present, the sample preparation methods and measurement methods for the shrinkage rate of some electronic glasses are roughly the same. For example, the size and size of the glass sample are cut; both ends of the glass sample are marked; the glass sample is annealed using an ordinary annealing furnace; the sample is generally placed flat on the refractory brick, which leads to not very precise temperature control; the principle of shrinkage measurement Same, is the ratio of the length difference before and after heat treatment of the sample to the original length. [0003] PDP (Plasma Display Panel, plasma display) is a display technology using gas discharge. At present, the glass substrates used by most PDP research and development units are soda-lime glass, and soda-lime glass with improved ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N25/16
Inventor 胡正宜何海建钟迪军宫汝华
Owner SICHUAN XUHONG OPTOELECTRONICS TECH
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