Ultraviolet-curing liquid optical silica gel used for reworkable gluing as well as preparation method and application thereof

An optical silica gel, ultraviolet light technology, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of small odor, low internal stress and elastic modulus, and high elongation at break, etc. Small shrinkage, low elastic modulus, and good rework performance

Inactive Publication Date: 2017-03-15
矽时代材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] There are many existing LOCA adhesive products, which can be divided into several major systems such as silicone, acrylic resin, unsaturated polyester, polyurethane, and epoxy resin according to the material. Among the existing products in the market, they can meet the requirements of high light transmittance and curing rate at the same time. Fast, good heavy work performance, high elongation at break, low odor, anti-yellowing aging, low internal stress and low elastic modulus are not many, so it is urgent to develop products that can meet the above properties to meet market demand

Method used

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  • Ultraviolet-curing liquid optical silica gel used for reworkable gluing as well as preparation method and application thereof
  • Ultraviolet-curing liquid optical silica gel used for reworkable gluing as well as preparation method and application thereof
  • Ultraviolet-curing liquid optical silica gel used for reworkable gluing as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Get the following components according to parts by weight:

[0038] Methacryloxypropyl modified polysiloxane (refer to the above method for preparation): 30 parts of 500cp polysiloxane, 70 parts of 25000cp polysiloxane, the structural formula is as follows:

[0039]

[0040] Wherein, R is a methacryloxypropyl group, l is an integer from 50 to 5000, and m is an integer from 1 to 150;

[0041] MQ silicone resin: 28 parts of commercially available methyl-terminated MQ silicone resin;

[0042] Photoinitiator: 0.15 parts of 2-hydroxy-2-methyl-1-phenyl-1-propanone;

[0043] Coupling agent: 0.2 part of methacryloxypropyltrimethoxysilane, 0.1 part of methyltrimethoxysilane;

[0044] Stabilizer: 0.1 parts of 1-(methyl)-8-(1,2,2,6,6-pentamethyl-4-piperidine) sebacate

[0045] Inhibitor: 0.2 parts of hydroquinone;

[0046] Step 1: Add 30 parts of 500cp polysiloxane, 70 parts of 25000cp polysiloxane, 28 parts of methyl MQ silicone resin, and 0.2 parts of hydroquinone into a pl...

Embodiment 2

[0049] Get the following components according to parts by weight:

[0050] Methacryloxypropyl modified polysiloxane: 40 parts of 3000cp polysiloxane, 60 parts of 18000cp polysiloxane, the structural formula is as follows:

[0051]

[0052] Wherein, R is a methacryloxypropyl group, l is an integer from 50 to 5000, and m is an integer from 1 to 150;

[0053] MQ silicone resin: 20 parts of commercially available vinyl MQ silicone resin;

[0054] Photoinitiator: 0.20 parts of 2-hydroxy-2-methyl-1-phenyl-1-propanone, diphenyl-(2,4,6-trimethylbenzoyl)phosphine bis(2,4, 0.1 part of 6-trimethylbenzoyl) phosphine oxide;

[0055] Coupling agent: 0.1 part of allyltrimethoxysilane, 0.05 part of γ-[(2,3)-glycidoxy]propyltrimethoxysilane;

[0056] Inhibitor: 0.06 part of p-hydroxyanisole;

[0057] Step 1: Add 40 parts of 3000cp polysiloxane, 60 parts of 18000cp polysiloxane, 20 parts of vinyl MQ silicone resin, and 0.06 part of p-hydroxyanisole into the planetary mixer. The base MQ ...

Embodiment 3

[0060] Get the following components according to parts by weight:

[0061] Methacryloxypropyl modified polysiloxane: 55 parts of 2500cp polysiloxane, 45 parts of 11000cp polysiloxane, the structural formula is as follows:

[0062]

[0063] Wherein, R is a methacryloxypropyl group, l is an integer from 50 to 5000, and m is an integer from 1 to 150;

[0064] Photoinitiator: 0.6 parts of 2,2-dimethoxy-2-phenylacetophenone;

[0065] Coupling agent: 0.35 parts of γ-mercaptopropyltrimethoxysilane;

[0066] Stabilizer: 0.025 parts of bis(1-octyloxy-2,2,6,6-tetramethyl-4-piperidinyl) sebacate;

[0067] Inhibitor: 0.4 parts of methyl hydroquinone;

[0068] Step 1: Add 55 parts of 2500cp polysiloxane, 45 parts of 11000cp polysiloxane, and 0.4 part of methyl hydroquinone into the planetary mixer, heat the material to 75°C, and stir thoroughly to make the material evenly mixed;

[0069] Step 2: Add 0.6 parts of 2,2-dimethoxy-2-phenylacetophenone and 0.025 parts of bis(1-octyloxy-2,...

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Abstract

The invention belongs to the technical field of preparation of adhesives and specifically discloses an ultraviolet-curing liquid optical silica gel used for reworkable gluing. The ultraviolet-curing liquid optical silica gel used for reworkable gluing comprises the following ingredients in parts by weight: 100 parts of methacryloyloxyethyl modified polysiloxane; 0-90 parts of MQ silicon resin, 0.1-10 parts of a photoinitiator, 0.01-5 parts of a coupling agent, 0.01-5 parts of a stabilizer and 0.01-5 parts of a polymerization inhibitor. The liquid optical silica gel provided by the invention has high light transmittance, small shrinking percentage, small yellowing index and good reworkable performance; the liquid optical silica gel can be repeatedly used for gluing an optical element and a screen; meanwhile, the rejection rate of materials can be effectively controlled, the production cost of enterprises is greatly reduced, and the application prospect is wide.

Description

technical field [0001] The invention belongs to the technical field of adhesive preparation, and more specifically relates to a UV-curable liquid optical silica gel for rework lamination and its preparation method and application. Background technique [0002] Mobile phones, tablets, computers, and TVs are becoming more and more important in people's daily work, study, and life. With the improvement of people's living standards, the performance requirements for these electronic devices are gradually increasing. It is more convenient, and the display effect is more stable and clearer. Under this market demand, a full lamination technology came into being, and the key to the success of this technology is the selection and use of adhesives for lamination. [0003] Liquid Optical Adhesive (LOCA Adhesive) is a special adhesive with certain fluidity for bonding transparent optical devices. It is different from traditional optical adhesive tape (OCA Adhesive). There are problems ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/07C09J183/04C09J11/06
CPCC09J183/04C08L2205/025C08L2205/03C09J11/06C08L83/04C08K5/5425C08K5/5419C08K5/3435C08K5/5435C08K5/548
Inventor 周英杰丁敬德
Owner 矽时代材料科技股份有限公司
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