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Heat-cured thinned edge-sealing adhesive

An edge-sealing adhesive and heat-curing technology, used in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of uneven thinning, glass breakage, glass scrap, etc., to achieve good protection ability, reduce The effect of cracking and protecting against corrosion

Inactive Publication Date: 2017-10-03
SHENZHEN DALTON ELECTRONICS MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the existing TFT-LCD glass thinning process, UV-cured edge sealant is used for protection. Because the UV edge sealant is protected by strong acid (70% concentrated sulfuric acid) and strong alkali (20% Potassium hydroxide) treatment, there will be a phenomenon of glue falling, when soaked in HF acid, it is easy to appear side erosion or leakage; at the same time, with the improvement of thinning process requirements, the thinning of TFT-LCD glass The thickness is getting thinner and thinner (0.2mm). In this process, the glue will be exposed, which will lead to uneven thinning. Therefore, it is necessary to remove the glue. The UV-cured edge banding glue needs external force to remove it. In this process, it is easy to cause the breakage of the glass, which directly leads to the scrapping of the glass

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0029] According to mass percentage, water glass is 40%, water glass curing agent sodium fluorosilicate is 50%, filler K200 is 5%, dispersant BYK-190 is 1%, defoamer BYK-019 is 2%, leveling agent BYK-301 is 1%, and coupling agent Z-6040 is 2%. Mix all ingredients evenly.

preparation Embodiment 2

[0031] According to mass percentage, water glass is 60%, water glass curing agent sodium fluorosilicate is 20%, filler K200 is 7%, dispersant BYK-190 is 0.5%, defoamer BYK-019 is 1%, leveling agent BYK-301 is 1.5%, coupling agent Z-6040 is 5%. Mix all ingredients evenly.

preparation Embodiment 3

[0033] According to mass percentage, water glass is 75%, water glass curing agent sodium fluorosilicate is 10%, filler K200 is 6%, dispersant BYK-190 is 0.1%, defoamer BYK-019 is 0.1%, leveling agent BYK-301 is 2%, and coupling agent Z-6040 is 3%. Mix all ingredients evenly.

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Abstract

The invention provides a heat-cured thinned edge-sealing adhesive. The heat-cured thinned edge-sealing adhesive comprises, by mass, 40 to 75% of soluble glass, 10 to 50% of a soluble glass curing agent, 5 to 10% of a filling material, 0.1 to 2% of a dispersant, 0.1 to 2% of an antifoaming agent, 0.1 to 2% of a leveling agent and 0.1 to 5% of a coupling agent, wherein the soluble glass is a soluble glass solution containing a R2O.nSiO2 structure, R is alkali metal, n is the modulus of the soluble glass and is 1, 2, 3 or 4, and the n value of the used soluble glass may be the n value of a single substance or the n value of a mixture; the soluble glass curing agent is fluosilicate and has a particle size of 1 [mu]m or below; and the filling material is fumed silica or talcum powder, and the primary particle size of the filling material is 1 [mu]m or below. The edge-sealing adhesive provided by the invention is better in construction process, has higher bonding strength and better resistance to strong acid, strong base and HF acid, can protect TFT-LCD glass from corrosion, and reduces the possibility of fracture of TFT-LCD glass caused by external force during adhesive removal.

Description

technical field [0001] The invention relates to an edge sealing adhesive used for thinning protection of TFT-LCD glass. Background technique [0002] In the existing TFT-LCD glass thinning process, UV-cured edge sealant is used for protection. Because the UV edge sealant is protected by strong acid (70% concentrated sulfuric acid) and strong alkali (20% Potassium hydroxide) treatment, there will be a phenomenon of glue falling, when soaked in HF acid, it is easy to appear side erosion or leakage; at the same time, with the improvement of thinning process requirements, the thinning of TFT-LCD glass The thickness is getting thinner and thinner (0.2mm). In this process, the glue will be exposed, which will lead to uneven thinning. Therefore, it is necessary to remove the glue. The UV-cured edge banding glue needs external force to remove it. In this process, it is easy to cause the breakage of the glass, which directly leads to the scrapping of the glass. Contents of the inv...

Claims

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Application Information

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IPC IPC(8): C09J1/02C09J11/04
CPCC09J1/02C09J11/04
Inventor 李文进王胜林黎厚明
Owner SHENZHEN DALTON ELECTRONICS MATERIAL CO LTD