Preparation of two-component transparent LED silicone coating adhesive

A silicone, two-component technology, applied in adhesives, polymer adhesive additives, non-polymer adhesive additives, etc., can solve unfavorable environmental protection, unfavorable cost saving, insufficient adhesion and yellowing resistance, etc. problems, to achieve good elasticity, prolong product life and reliability

Inactive Publication Date: 2019-05-14
FUJIAN CHANGDE PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a preparation of a two-component transparent LED silicone coating adhesive, which solves the problems of unfavorable cost saving, pollution, insufficient adhesion and yellowing resistance, and unfavorable environmental protection

Method used

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  • Preparation of two-component transparent LED silicone coating adhesive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A two-component transparent LED silicone coating adhesive, including component A and component B, component A is composed of α-ω-dihydroxy polydimethylsiloxane and diluent in a weight ratio: (50.0-75.0 ): (25.0-50.0) mixed composition, component B consists of crosslinking agent, diluent, tackifier, catalyst and anti-yellowing agent in a weight ratio: (35.0-50.0): (20.0-40.0): (15.0- 30.0): (0.0-0.3): (0.5-1.5) mixed composition, and the A component and the B component are mixed at a weight ratio of 10:1.

[0028] Preferably, the α-ω-dihydroxy polydimethylsiloxane is one or a mixture of 107 silicone rubbers with a viscosity of 750 to 80,000 cps.

[0029] Preferably, the diluent is one or a mixture of simethicone with a viscosity of 50-100 cps.

[0030] Preferably, the crosslinking agent is one of propyl orthosilicate and ethyl orthosilicate or a mixture thereof, and the diluent is one or a mixture of dimethyl silicone oil of 50-100 cps.

[0031] Preferably, the tackifier is a s...

Embodiment 2

[0042] As in the preparation of a two-component transparent LED silicone coating of Example 1, the following process can also be used:

[0043] S1. Mix 107 silicone rubber with a viscosity of 750 cps and a viscosity of 1500 cps and a dimethyl silicone oil (201 silicone oil) with a viscosity of 100 cps at a weight ratio of 50.0:25.0:25.0. Mix and stir uniformly, and filter with an 80 mesh filter to obtain component A. Component A is a colorless and transparent liquid with a viscosity of 520 cps, and it is ready for use;

[0044] S2. Mix the modified silane coupling agent A-52: phenyltrimethoxysilane: modified silane coupling agent S-28= 25:10:65 (weight ratio), stir and mix well, seal well, and at room temperature After standing reaction, self-made thickener M is prepared;

[0045] S3. Combine propyl orthosilicate, dimethyl silicone oil (201 silicone oil) with a viscosity of 100 cps, thickener M obtained in S2, dibutyl tin dilaurate and anti-yellowing agent (Fisorb L-9322) in a weigh...

Embodiment 3

[0049] As in the preparation of a two-component transparent LED silicone coating of Example 1, the following process can also be used:

[0050] S1. Mix 107 silicone rubber with a viscosity of 1500 and a viscosity of 20000 cps and a dimethyl silicone oil with a viscosity of 50 cps (201 silicone oil) at a weight ratio of 35.0:25.0:40.0 and mix them to obtain component A by filtering with an 80 mesh filter. The A component is a colorless and transparent liquid with a viscosity of 1100cps, and it is ready for use;

[0051] S2. Mix the modified silane coupling agent A-52: phenyltrimethoxysilane: modified silane coupling agent S-28= 25:10:65 (weight ratio), stir and mix well, seal well, and at room temperature After standing reaction, self-made thickener M is prepared;

[0052] S3. Combine ethyl orthosilicate, dimethyl silicone oil (201 silicone oil) with a viscosity of 50cps, thickener M, dibutyltin diacetate and anti-yellowing agent (Fisorb L-9322) in a weight ratio of 45:28.8:25.3: 0....

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Abstract

The invention discloses preparation of a two-component transparent LED silicone coating adhesive. The two-component transparent LED silicone coating adhesive comprises a component A and a component B,wherein the component A is formed by mixing alpha-omega-dihydroxypolydimethylsiloxane and a diluent according to the weight ratio of (50.0-75.0): (25.0-50.0); the component B is formed by mixing a cross-linking agent, a diluent, a tackifier, a catalyst and an anti-yellowing agent according to the weight ratio of (35.0-50.0): (20.0-40.0): (15.0-30.0): (0.0-0.3): (0.5-1.5); and the component A andthe component B are mixed and used according to the weight ratio of 10: 1. The preparation of the two-component transparent LED silicone coating adhesive has the advantages of low viscosity, good transparency, good elasticity, good adhesion property, good yellowing resistance, good weather resistance, no corrosion and environmental friendliness. Meanwhile, the two-component transparent LED silicone coating adhesive can adapt to alternate change of the temperature when an LED display screen is used, and cannot crack, the circumstance that the light transmittance of an LED lamp is reduced due toyellowing of an adhesive layer is avoided, and a display screen module can be effectively protected for a long time.

Description

Technical field [0001] The invention relates to the field of organic silicon materials, in particular to the preparation of a two-component transparent LED organic silicon coating glue. Background technique [0002] LED display integrates microelectronics technology, computer technology, and information processing. With its bright colors, wide dynamic range, high brightness, high definition, low working voltage, low power consumption, long life, impact resistance, bright colors and work Stable and reliable and other advantages, it has become the most advantageous new generation of display media. LED displays have been widely used in large squares, commercial advertisements, stadiums, information dissemination, news releases, securities trading and other places. Among them, the LED display module is one of the main components that make up the finished LED display, which is mainly composed of LED lights, PCB circuit boards, driver ICs, resistors, capacitors and plastic kits. Acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/04C09J11/06C09J11/08
Inventor 许荣鹏项英凡吴培煌
Owner FUJIAN CHANGDE PLASTIC IND
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