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Full-transparent liquid silicone rubber composition and preparation method thereof

A technology of silicone rubber composition and transparent liquid, which is applied in the field of fully transparent liquid silicone rubber composition and its preparation, and can solve the problems of low hardness and low strength of liquid silicone rubber

Active Publication Date: 2013-02-13
SHENZHEN CITY SQUARE SILICONE MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a fully transparent liquid silicone rubber composition and its preparation method to solve the problems of low hardness and low strength of traditional liquid silicone rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044]A fully transparent silicone rubber composition comprising: (A) 100 parts by mass of vinyl-terminated silicone oil with an average viscosity of 7000 mPa·s; (B) 35 parts by mass of an average M / Q value of 1.0 and an average vinyl content of 4.5 % vinyl MQ silicone resin; (C) 11 mass parts of methyl hydrogen MQ silicone resin with a silicon hydrogen content of 0.8%; (D) 2 mass parts of a hydrogen-containing silicone oil with a silicon hydrogen content of 0.7% (that is, at least two Si-H bonded organopolysiloxane); (E) 0.03 parts by mass of inhibitor; (F) 0.3 parts by mass of platinum catalyst.

[0045] The fully transparent silicone rubber composition of preparation embodiment 1 comprises the steps:

[0046] Step 1. Preparation of base glue

[0047] After mixing 100 parts by mass of vinyl polydimethylsiloxane and 40 parts by mass of mixed vinyl MQ silicone resin with a vinyl content of 4.5% and an M / Q value of 1.0, grind to obtain a uniform rubber base;

[0048] Step 2, ...

Embodiment 2

[0053] A fully transparent silicone rubber composition: (A) 100 parts by mass of vinyl-terminated silicone oil with an average viscosity of 7000 mPa·s; (B) 25 parts by mass of ethylene with an average M / Q value of 1.0 and an average vinyl content of 6%. base MQ silicone resin; (C) 10.5 parts by mass of methyl hydrogen MQ silicone resin with a silicon hydrogen content of 0.8%; (D) 2 parts by mass of hydrogen-containing silicone oil with a silicon hydrogen content of 0.7%; (E) 0.03 parts by mass of inhibition agent; (F) 0.3 parts by mass of platinum catalyst.

[0054] The fully transparent silicone rubber composition of preparation embodiment 2 comprises the steps:

[0055] Step 1. Preparation of base glue

[0056] After mixing 100 parts by mass of vinyl polydimethylsiloxane and 28.5 parts by mass of mixed vinyl MQ silicone resin with a vinyl content of 6% and an M / Q value of 1.0, grind to obtain a uniform rubber base;

[0057] Step 2, preparation of material A and material B ...

Embodiment 3

[0062] A fully transparent silicone rubber composition: (A) 100 parts by mass of vinyl-terminated silicone oil with an average viscosity of 7000 mPa·s; (B) 40 parts by mass of ethylene with an average M / Q value of 1.0 and an average vinyl content of 4%. base MQ silicone resin; (C) 11.5 parts by mass of methyl hydrogen MQ silicone resin with a silicon hydrogen content of 0.8%; (D) 2 parts by mass of hydrogen-containing silicone oil with a silicon hydrogen content of 0.7%; (E) 0.03 parts by mass of inhibition agent; (F) 0.3 parts by mass of platinum catalyst.

[0063] The fully transparent silicone rubber composition of preparation embodiment 3 comprises the steps:

[0064] Step 1. Preparation of base glue

[0065] After mixing 100 parts by mass of vinyl polydimethylsiloxane and 46.1 parts by mass of mixed vinyl MQ silicone resin with a vinyl content of 4% and an M / Q value of 1.0, grind to obtain a uniform rubber base;

[0066] Step 2, preparation of material A and material B ...

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Abstract

The invention relates to a full-transparent liquid silicone rubber composition, which comprises the following components in mass part: 100 parts of vinyl polydimethylsiloxane, 10-80 parts of vinyl MQ silicon resin, 10-80 parts of methyl hydride MQ silicon resin, 0.01-10 parts of cross-linking agent, 0.001-1 part of inhibitor and 0.01-2 parts of platinum catalyst. The invention further relates to a preparation method for the full-transparent liquid silicone rubber composition. According to the invention, by utilizing the compatibility of the vinyl MQ silicon resin and the methyl hydride MQ silicon resin, the full-transparent liquid silicon rubber with more than 95% light transmittance can be prepared, and the full-transparent liquid silicon rubber with different intensity can be provided through the hard segment structural design of the silicon rubber provided by the invention.

Description

technical field [0001] The invention relates to a silicone rubber and a preparation method thereof, in particular to a fully transparent liquid silicone rubber composition with high strength and hardness and a preparation method thereof. Background technique [0002] Silicone rubber has excellent properties such as high and low temperature resistance, ultraviolet light resistance, radiation resistance, weather resistance, electrical insulation, high air permeability, and physiological inertia. , daily necessities, etc. have been widely used. [0003] Fully transparent liquid silicone rubber usually uses MQ silicone resin as reinforcing filler. In the US patent US2005 / 0006794A1, a highly transparent liquid silicone rubber composition is described, which is composed of vinyl silicone oil, vinyl MQ silicone resin, hydrogen polysiloxane, and platinum catalyst. Since then, several patents (such as US Patent: US2009 / 0118441A1, etc.) have disclosed highly transparent liquid silic...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08J3/24
Inventor 李彦民
Owner SHENZHEN CITY SQUARE SILICONE MATERIALS
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