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Frame sealing adhesive composition and preparation method thereof

A technology for sealing frame glue and filler, applied in the field of frame sealing glue composition and preparation thereof, can solve problems such as breakage, decreased productivity, burr at break, etc., and achieves the effect of avoiding burr or breakage and having good flexibility

Inactive Publication Date: 2015-12-23
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] With the development of narrow frame technology, the requirements for coating and cutting of glue are getting higher and higher. In order to reduce the incidence of defects such as puncture and peeling, the adhesive performance is usually improved by increasing the molecular weight of the sealant. As the viscosity of the frame glue increases, unstable phenomena such as large ends, jaggedness, and blocked nozzles are prone to occur during the glue application process, resulting in low product yields and reduced production capacity
Moreover, after the second cutting with glue, there will be burrs or breakage problems at the fracture when the slivers are divided by external force

Method used

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  • Frame sealing adhesive composition and preparation method thereof
  • Frame sealing adhesive composition and preparation method thereof
  • Frame sealing adhesive composition and preparation method thereof

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Embodiment approach

[0045] As a preferred embodiment of the present invention, the frame sealant includes the following raw materials in parts by weight: 7-10 parts of epoxy resin, 0.5-1 part of dispersant, nano-SiO 2 0.5-1.5 parts of microparticles, 60-70 parts of acrylic resin, 0.5-0.8 parts of coupling agent, 6-9 parts of thermal curing agent, 0.3-0.5 parts of photoinitiator, 0.1-0.3 parts of molecular weight regulator, 4-0 parts of organic filler 6 parts, 6 to 8 parts of inorganic fillers.

[0046] The preparation method of the frame sealing glue provided by the invention comprises the following steps:

[0047] (1) Add the dispersant to the solvent and stir evenly, then add nano-SiO 2 Microparticles, continue to stir to fully disperse the components to obtain dispersion system 1; then add epoxy resin to dispersion system 1, fully stir, high-speed shear emulsification to further disperse, and obtain dispersion system 2;

[0048] (2) Stir the obtained dispersion system 2 and other components ...

Embodiment 1

[0055] This embodiment provides a frame sealant, which is composed of the following raw materials in parts by weight: 8 parts of bisphenol A epoxy resin, 0.5 parts of dispersant KH570, and nano-SiO with a particle size of 60 mm 2 0.5 parts of microparticles, 63 parts of methyl methacrylate, 0.7 parts of coupling agent KH5700, 10 parts of thermal curing agent isophorone diamine, 0.7 parts of photoinitiator 2,2-diethoxyacetophenone, molecular weight 0.6 parts of regulator tertiary dodecyl mercaptan, 4 parts of elastic rubber balls with a diameter of 0.1 μm to 1.0 μm, and 10 parts of silica balls with a diameter of 1.0 μm to 3.0 μm.

Embodiment 2

[0057] This embodiment provides a frame sealant, which is composed of the following raw materials in parts by weight: 9 parts of novolac epoxy resin, 0.5 parts of dispersant KH5700, and nano-SiO with a particle size of 70 mm 2 0.7 parts of microparticles, 65 parts of ethyl tert-butyl acrylate, 0.9 parts of vinyl-trimethoxysilane coupling agent, 8 parts of thermal curing agent ethylenediamine, 0.6 parts of photoinitiator dibenzoyl peroxide, molecular weight modifier 0.3 parts of tertiary dodecyl mercaptan, 5 parts of fully vulcanized styrene-butadiene rubber powder, and 8 parts of silicon carbide.

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Abstract

The invention relates to a frame sealing adhesive. The frame sealing adhesive is prepared from, by weight, 5-10 parts of epoxy resin, 0.5-1.0 part of dispersing agent, 0.5-2.0 parts of SiO2 nanoparticles, 60-70 parts of acrylic resin, 0.5-1.0 part of coupling agents, 5-10 parts of heat curing agents, 0.1-1.0 part of photoinitiator, 0.1-1.0 part of molecular weight regulator, 4-6 parts of organic fillers and 5-10 parts of inorganic fillers. By means of the frame sealing adhesive, the design requirements of a narrow frame can be met, the phenomena of punctures, big heads, sawtooth shapes, nozzle blocking, slivers and burrs are avoided, and the production requirement of high-quality products is met.

Description

technical field [0001] The invention relates to a frame sealing glue composition and a preparation method thereof, belonging to the technical field of TFT-LCD panel manufacturing. Background technique [0002] With the advancement of science and technology, TFT-LCD liquid crystal display has gradually become the mainstream of display due to its advantages of small size, low power consumption, and low radiation. A liquid crystal display can be formed by aligning an array substrate (TFT) and a color filter substrate (CF). [0003] At present, in the box-forming ODF process, the frame sealant is usually coated on the CF substrate, the TFT substrate and the CF substrate are boxed together, and the sealant is cured through UV curing and heat curing, and the two substrates are firmly bonded together. Therefore, the sealant is a key material in the TFT-LCD manufacturing process. [0004] With the development of narrow frame technology, the requirements for coating and cutting of ...

Claims

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Application Information

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IPC IPC(8): C09J4/06C09J4/02C09J11/04C09J11/06C09J11/08
Inventor 郝延顺庞鲁王磊贺新钢谢珍梅
Owner BOE TECH GRP CO LTD
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