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Addition type liquid silicone rubber for fully transparent mobile phone sleeve and preparation method thereof

A liquid silicone rubber, mobile phone cover technology, applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problem of poor mechanical properties such as tensile strength and tear strength, and the intermolecular force of polysiloxane is small, which cannot meet the Application requirements and other issues, to achieve the effect of excellent mechanical properties, good transparency, and improved transparency

Inactive Publication Date: 2019-01-15
JIANGSU TIANCHEN NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Silicone rubber has a variety of excellent properties, but because the intermolecular force of polysiloxane is very small, its mechanical properties such as tensile strength and tear strength are poor, which cannot meet the application requirements, so it needs to be reinforced
The traditional reinforcing filler is white carbon black, the cost of white carbon black is low, and the reinforcing effect is very good, but it has the disadvantages of obviously increasing the viscosity of the system and poor transparency. MQ silicone resin is composed of monofunctional group chains and four functional group chains. Organic-inorganic hybrid polyorganosiloxane with complex structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] This example provides an addition-type liquid silicone rubber for a fully transparent mobile phone case, which is composed of component A and component B at a mass ratio of 1:1, and component A includes: vinyl polysiloxane 70.3% by mass percentage , 4.2% silane coupling agent, 11.2% fumed silica, 14.1% vinyl MQ silicone resin, 0.5% chloroplatinic acid tetramethyldivinyldisiloxane complex, of which the silane coupling agent is hexamethyl Two kinds of mixtures of base disilazane and 1 dimethyldiethoxysilane, the mass content of platinum in the chloroplatinic acid tetramethyldivinyldisiloxane complex is 2000ppm;

[0026] Component B includes: 71.2% vinyl polysiloxane, 11.4% fumed silica, 14.2% vinyl MQ silicone resin, 2.7% low-hydrogen polysiloxane, and 0.5% vinyl ring.

[0027] This embodiment also provides a method for preparing the addition-type liquid silicone rubber of a fully transparent mobile phone cover, which specifically includes the following steps:

[0028] S...

Embodiment 2

[0038]This example provides an addition-type liquid silicone rubber for a fully transparent mobile phone cover, which is composed of component A and component B at a mass ratio of 1:1, and component A includes: vinyl polysiloxane 73.4% by mass percentage , vinyl MQ silicone resin 26.4%, chloroplatinic acid tetramethyldivinyldisiloxane complex 0.2%, wherein the mass content of platinum in chloroplatinic acid tetramethyldivinyldisiloxane complex 2500ppm;

[0039] Component B includes: 70.9% vinyl polysiloxane, 25.5% vinyl MQ silicone resin, 3.5% low-hydrogen polysiloxane, and 0.1% acetylene alcohol.

[0040] This embodiment also provides a method for preparing the addition-type liquid silicone rubber of a fully transparent mobile phone cover, which specifically includes the following steps:

[0041] Step 1: Mix 100kg of octamethylcyclotetrasiloxane and 1.5Kg of tetramethyldivinyldisiloxane, add 0.2Kg of catalyst tetramethylammonium hydroxide under stirring, heat up to 120°C for...

Embodiment 3

[0051] This example provides an addition-type liquid silicone rubber for a fully transparent mobile phone cover, which is composed of component A and component B at a mass ratio of 1:1, and component A includes: vinyl polysiloxane 73.4% by mass percentage , vinyl MQ silicone resin 26.4%, chloroplatinic acid tetramethyldivinyldisiloxane complex 0.2%, wherein the mass content of platinum in chloroplatinic acid tetramethyldivinyldisiloxane complex 2500ppm;

[0052] Component B includes: 70% vinyl polysiloxane, 25.2% vinyl MQ silicone resin, 4.7% low-hydrogen polysiloxane, and 0.1% acetylene alcohol.

[0053] This embodiment also provides a method for preparing the addition-type liquid silicone rubber of a fully transparent mobile phone cover, which specifically includes the following steps:

[0054] Step 1: Mix 100kg of octamethylcyclotetrasiloxane and 0.8kg of tetramethyldivinyldisiloxane, add 0.2kg of catalyst tetramethylammonium hydroxide under stirring, heat up to 120°C and ...

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Abstract

The invention discloses an addition type liquid silicone rubber for a fully transparent mobile phone sleeve, wherein the addition type liquid silicone rubber is composed of a component A and a component B according to the mass ratio of 1:1. The component A is composed of, by the mass percentage, 50-75% of vinyl polysiloxane, 0-10% of a silane coupling agent, 0-20% of fumed silica, 10-40% of vinylMQ silicone resin, and 0.1-1% of a platinum catalyst. The component B is composed of, by the mass percentage, 50-75% of vinyl polysiloxane, 0-5% of a silane coupling agent, 0-20% of fumed silica, 10-40% of vinyl MQ silicone resin, 2-20% of low hydrogen polysiloxane and 0.1-0.5% of an inhibitor.

Description

technical field [0001] The invention relates to the technical field of silicone rubber, in particular to an addition-type liquid silicone rubber for a fully transparent mobile phone cover and a preparation method thereof. Background technique [0002] Silicone rubber has a variety of excellent properties, but because the intermolecular force of polysiloxane is very small, its mechanical properties such as tensile strength and tear resistance are poor, which cannot meet the application requirements, so it needs to be reinforced. The traditional reinforcing filler is white carbon black, the cost of white carbon black is low, and the reinforcing effect is very good, but it has the disadvantages of obviously increasing the viscosity of the system and poor transparency. MQ silicone resin is composed of monofunctional group chains and four functional group chains. It is an organic-inorganic hybrid polyorganosiloxane with a relatively complex structure. Contents of the invention ...

Claims

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Application Information

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IPC IPC(8): C08L83/07C08L83/05C08K13/06C08K9/06C08K3/36C08G77/20H01L33/52
CPCC08L83/04C08G77/20C08L2201/10C08L2203/206C08L2205/025H01L33/52C08K9/06C08K3/36
Inventor 张旭徐文俊宋顺刚蔡杨
Owner JIANGSU TIANCHEN NEW MATERIALS
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