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Liquid silicon resin foam material and preparation method thereof

A technology of resin foam and liquid silicon, applied in the field of organic materials and their preparation, can solve the problems of brittleness and complexity, and achieve the effects of excellent electrical insulation performance, good reinforcement effect and high industrial application value.

Active Publication Date: 2018-01-12
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although solid MQ silicone resin has a certain reinforcing effect on liquid-added silicone rubber, complex and cumbersome methods must be used when using it: first dissolve MQ silicone resin with an organic solvent, disperse it in the silicone rubber, and then remove the solvent, and there is a change brittle question

Method used

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  • Liquid silicon resin foam material and preparation method thereof
  • Liquid silicon resin foam material and preparation method thereof
  • Liquid silicon resin foam material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0081] 100 parts by mass of α, ω-dihydroxy polydimethylsiloxane (colorless transparent flowing liquid, viscosity 2000mPa·s, volatile matter 1.0%, manufactured by Shanghai Resin Factory Co., Ltd.), 40 parts of BET specific surface area is 125m 2 Hydrophobic precipitation method silica (manufactured by Jilin Tonghua Shuanglong Chemical Co., Ltd.) of / g, 5 parts by mass have silanol groups at both ends and viscosity is 29mm 2 / s (23°C) of dimethyl polysiloxane, add it to a 5L vacuum kneader, mix it in at room temperature, knead it in vacuum at 130°C for 2 hours, discharge and cool to room temperature to obtain liquid polysiloxane nano particle base.

[0082] With 100 parts by mass of liquid vinyl MDQ silicone resin (vinyl content 3%, MQ value 0.8, viscosity 5000mPa s, manufactured by Shanghai Aishibo Chemical Co., Ltd.), 100 parts by mass of liquid polysiloxane nanoparticle base material (containing α,ω-dihydroxy polydimethylsiloxane about 71 parts by mass, nano-silica particles...

Embodiment 2

[0086] 100 parts by mass of α,ω-bisvinyl polydimethylsiloxane (vinyl content 0.31%, viscosity 500mPa·s, produced by Zhejiang Quzhou Jiancheng Silicone Co., Ltd.), 40 parts by mass of BET specific surface area of ​​197.5m 2 / g of fumed silica (produced by Shenyang Chemical Co., Ltd.), 5 parts by mass having silanol groups at both ends and a viscosity of 29mm 2 / s (23 ℃) of dimethylpolysiloxane, 5 parts by mass of hexamethyldisilazane (produced by Anhui Bengbu Silicone Chemical Factory, with a purity greater than 98%), added to a 5L vacuum kneader, at room temperature After mixing, vacuum knead at 130° C. for 2 hours, discharge and cool to room temperature to obtain liquid polysiloxane nanoparticle base material.

[0087]100 parts by mass of liquid vinyl MDQ silicone resin (vinyl content 3%, MQ value 0.8, viscosity 5000mPa·s, manufactured by Shanghai Aishibo Chemical Co., Ltd.), 50 parts by mass of the above-mentioned divinyl polydimethylsiloxane Nano-silica mixture (containing...

Embodiment 3

[0090] Liquid vinyl MQ silicone resin (vinyl content 1%, MQ value 0.8, viscosity 5000mPa s, manufactured by Zhejiang Runhe Organic Silicon New Material Co., Ltd.) 100 parts by mass, 2.7 parts by mass hydroxyl silicone oil (produced by Zhonghao Chenguang Chemical Research Institute 209-3, viscosity 15-20mPa·s, hydroxyl content 7-9%), 7.3 parts by mass of liquid hydrogen-containing silicone oil (hydrogen content 1.56%, produced by Zhejiang Quzhou Jiancheng Silicone Co., Ltd.), 0.083 parts by mass of tetramethyl Tetravinylcyclotetrasiloxane (produced by Zhonghao Chenguang Chemical Research Institute, purity not less than 99%) and 0.39 parts by mass of VM-23 platinum catalyst (Pt mass fraction 3000ppm, produced by Zhejiang Quzhou Jiancheng Organic Silicon Co., Ltd.) wherein Pt Catalyst is 11.7ppm in terms of Pt mass, since component (C) is not used, and there is no need to go through the dispersion step of nanoparticles, the above-mentioned components are directly mixed in a beaker...

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Abstract

The invention discloses a liquid silicon resin foam material. The liquid silicon resin foam material comprises the following components: (A) 100 parts by mass of vinyl M(D)Q liquid silicon resin; (B)0.1 to 120 parts by mass of liquid organopolysiloxane; (C) 0 to 60 parts by mass of micro-nano inorganic particles; (D) 1 to 30 parts by mass of a crosslinking agent; (E) 1 to 60 ppm of a platinum catalyst (based on the weight of Pt); and (F) 0 to 2 parts of an inhibitor. The invention also discloses a preparation method of the liquid silicon resin foam material. According to the liquid silicon resin foam material obtained by the method, no matter a compression molding forming method or an injection and casting molding method is used, the liquid silicon resin foam material with high mechanicalstrength and good appearance can be obtained.

Description

technical field [0001] The invention relates to a liquid silicone foam material and a preparation method thereof, in particular to a liquid silicone resin foam material of vinyl M(D)Q silicone resin and a preparation method thereof, and belongs to the technical field of organic materials and its preparation. Background technique [0002] Liquid silicone foam material has low specific gravity, good flexibility, excellent biocompatibility, excellent weather resistance, ozone resistance, heat resistance, good resilience, and good cushioning, vibration reduction, heat insulation and sound insulation effects. It is easy to form into various shapes. It is a new type of foam material, which is used in electronic appliances, building doors and windows, vehicle transportation, sailing ships, aircraft, precision instruments, aerospace and special equipment. [0003] The present inventor found when studying the liquid silicone rubber foam material, due to the impact of nanoparticles on...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08L83/06C08K3/36
Inventor 雷卫华朱敬芝余凤湄张倩刘小兵夏爽李玉全陈立新
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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