Frame sealing adhesive, and preparation method and application thereof

A technology of sealing glue and rubber powder, applied in chemical instruments and methods, adhesives, printing plate preparation, etc., can solve problems such as product storage and transportation troubles, lack of bonding performance, etc., achieve high dimensional stability, and do not pollute liquid crystals Performance, effect of low water absorption

Inactive Publication Date: 2012-07-18
绵阳艾萨斯电子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the related products on the market are mainly epoxy-based thermosetting one-component adhesives. Although they have been commercialized, there are still some obvious shortcomings, which cannot fully meet the above five practical properties. For example, the currently used products are in There is a certain lack of adhesive performance at low temperature. In terms of storage, it should be stored at a relatively low temperature, which will bring great trouble to the storage and transportation of the product.

Method used

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  • Frame sealing adhesive, and preparation method and application thereof
  • Frame sealing adhesive, and preparation method and application thereof
  • Frame sealing adhesive, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Utilize planetary stirring equipment to make the following components: bisphenol A epoxy resin NPEL-134 (purchased from Nanya Epoxy Resin (Kunshan) Co., Ltd., hydrolyzed chlorine content is less than 300 × 10 -6 mg / kg) 68 parts by weight, curing agent adipic acid dihydrazide (purchased from Wuxi Liangxi Fine Chemical Co., Ltd.) 8 parts by weight (use jet mill ultra-fine grinding equipment to process, the average particle size after processing is 3 μm, The maximum particle size is 5 microns), VP501 carboxylated nitrile rubber for ultrafine fully vulcanized powder rubber (particle size is 50-200nm, purchased from Beijing Research Institute of Chemical Industry) 5 parts by weight, filler silica CL-2008-III (purchased from Hebei Xinhao Nano Material Co., Ltd., the average particle size is 1 μm, the maximum particle size is less than 5 μm) 7 parts by weight, thixotropic agent fumed silica Degussa A200 type 1 part by weight, silane coupling agent KH560 (purchased from Nanjing...

Embodiment 2

[0025] Following the same method as in Example 1, only the curing agent was replaced by isophthalic acid dihydrazide (purchased from Jinan Leqi Chemical Co., Ltd.), to obtain a frame sealant.

[0026] The maximum particle diameter of the sealant prepared in this example is less than 5 microns, has good storage performance, is suitable for screen printing sizing, and can be cured (pre-dried at 80°C for 30 minutes to remove solvent and then kept at 130°C for 60 minutes) It will be cured after 10 minutes) and then used for the frame sealing of TN (STN) liquid crystal cell.

Embodiment 3

[0028] Following the same method as in Example 1, only the rubber powder was replaced with VP301 acrylate rubber (with a particle size of 50-200 nm, Beijing Research Institute of Chemical Industry) to obtain a frame sealant.

[0029] The largest particle diameter of the sealant prepared in this example is less than 5 microns, has good storage performance, is suitable for screen printing sizing, and can be cured (pre-dried at 80°C for 30 minutes to remove solvent and then kept at 120°C for 60 minutes). It will be cured after 10 minutes) and then used for the frame sealing of TN (STN) liquid crystal cell.

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Abstract

The invention discloses a frame sealing adhesive and a preparation method and application thereof. The frame sealing adhesive comprises the following component: epoxy resin, a curing agent, a rubber powder, an organic filler, a thixotropic agent, a silane coupling agent and a solvent. The frame sealing adhesive has excellent storage performance and an adhesive applying manner suitable for screen printing and is used for sealing a side frame of a TN (twisted nematic) (STN-super twisted nematic) liquid crystal box; in addition, the solidified frame sealing adhesive has the advantages of low hydroscopic property, long-lasting and excellent sealing performance, excellent heat resistance and electric insulation performance, no pollution to liquid crystal, high rigidity, high toughness and high size stability, and important application value.

Description

technical field [0001] The invention relates to a frame sealing glue, a preparation method and application thereof. Background technique [0002] The invention relates to a sealing material for a liquid crystal box. Frame sealant for liquid crystal cell is one of the key materials in the manufacturing process of liquid crystal display. In the manufacturing process of liquid crystal cells, the usual process is to apply glue to the glass plate for liquid crystal cells by screen printing, pre-dry at 80°C / 30 minutes to remove solvent, and then heat press the glass, not higher than 150°C / 1 hours to cure. The cured product of this sealant has low water absorption, long-lasting excellent sealing performance, excellent heat resistance and electrical insulation performance, no pollution to liquid crystal performance, high rigidity, high toughness and dimensional stability. It plays a sealing role on the liquid crystal display device and ensures the normal use of the device under n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J115/00C09J133/00C09J109/02C09J113/00C09J183/04C09J11/06C09J11/04C09K3/10B41C1/14
Inventor 冯卫文
Owner 绵阳艾萨斯电子材料有限公司
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