Low-hardness high-flexibility double-component condensed type organic silicon potting adhesive composition

A silicone potting glue, two-component technology, applied in the field of potting glue, can solve the problems of easy bending, affecting waterproof and moisture-proof performance, cracking of the glue layer, etc., and achieves the effect of excellent waterproof and moisture-proof performance

Inactive Publication Date: 2009-10-28
GUANGZHOU HUITIAN FINE CHEM
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  • Abstract
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AI Technical Summary

Problems solved by technology

It has very excellent adhesiveness and overall curing performance, so it is suitable for potting of large-area modules, especially for LED display modules; when the LED display is cleaned or transported, the LED tube is touched. It is easy to bend and cause the potted adhesive layer to crack, thus affecting the waterproof and moisture-proof performance

Method used

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  • Low-hardness high-flexibility double-component condensed type organic silicon potting adhesive composition

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Embodiment approach

[0024] A low-hardness and high-flexibility two-component condensation type silicone potting adhesive composition, wherein, the manufacturing process of the base adhesive: adding the structure control agent hexamethyldisilazane into the 107 adhesive, mixing evenly, adding White carbon black treated with hexamethyldisilazane, kneaded for 1 to 2 hours, vacuum dehydrated and mixed, then cooled to obtain the base rubber;

[0025] Component A: 100 parts of 1500cs 107 glue (Shin-Etsu Japan), 50 parts of 100cs simethicone oil (Shin-Etsu Japan), 50 parts of stearic acid-treated calcium carbonate with a particle size of less than 2μ (American Special Minerals), Raven M carbon black (U.S. Columbia Corporation), 20 parts of base glue;

[0026] Component B: 10 parts of dimethyldiethoxysilane, 5 parts of vinyltriethoxysilane, 2 parts of γ-aminopropyltriethoxysilane, 0.1 part of dibutyltin dilaurate;

[0027]Inject the prepared silicone material into a 2mm deep mold, mix it at a ratio of 10...

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Abstract

The invention mainly relates to potting adhesive, in particular to a low-hardness and high-flexibility double-component condensed type organic silicon potting adhesive composition suitable for potting a light emitting diode (LED) display screen module. The composition comprises a component A and a component B, wherein the component A comprises a basic polymer, a filling material, a plasticizing agent and a deep curing agent; and the component B comprises a cross-linking agent, a tackifier and a catalyst. The component A and the component B are mixed according to designed proportion to have a cross-linking reaction so as to realize the effects of potting the LED display screen module, preventing adhesive layer cracking during repeatedly bending and folding LED tubes and providing excellent waterproof and dampproof properties.

Description

technical field [0001] The invention mainly relates to a potting glue, in particular to a two-component condensation type silicone potting glue composition which is used for potting LED display screen modules and has low hardness and high flexibility. Background technique [0002] As a modern electronic media, LED electronic display is irreplaceable by any other media due to its flexible display area (dividable, arbitrary assembly), high brightness, long life, large capacity, digitization, and real-time characteristics. of. Due to the relatively complex working environment of the outdoor screen, in order to ensure its long-term stable operation, common protective measures include: waterproof, anti-static, lightning protection, windproof, moisture-proof, antifreeze, etc.; [0003] Room temperature vulcanized silicone rubber is a new type of silicone elastomer that came out in the 1960s. The most notable feature of this rubber is that it can be cured on the spot without heati...

Claims

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Application Information

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IPC IPC(8): C09K3/10C09J183/14C09J11/06H01L23/29
Inventor 张银华
Owner GUANGZHOU HUITIAN FINE CHEM
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