Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Preparation method of highly-crosslinked organic silicon rubber

A silicone rubber, high cross-linking technology, applied in the field of rubber materials, can solve problems such as poor mechanical properties of silicone rubber, achieve high bonding, improve physical properties, and good affinity.

Pending Publication Date: 2020-01-17
孔祥文
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] Technical problem to be solved by the present invention: Aiming at the problem of poor mechanical properties of existing silicone rubber, a preparation method of highly cross-linked silicone rubber is provided

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] In parts by weight, weigh 100 parts of octamethylcyclotetrasiloxane, 10 parts of N, N-dimethylformamide, 0.10 parts of deionized water, 0.010 parts of magnesium hydroxide, and N, N-dimethylformamide Add methyl formamide, ionic water, and magnesium hydroxide into octamethylcyclotetrasiloxane, stir and react at 180r / min under the condition of 120°C for 2h to obtain the reactant, which is placed in a vacuum distillation device, Under the conditions of pressure -0.2MPa and temperature 120°C, distill under reduced pressure for 30 minutes, cool at room temperature to obtain hydroxyl silicone oil, and then weigh 20 parts of nano-silica, 4 parts of methylvinylsilane, and 2 parts by weight. 1 part of methyltrichlorosilane, 20 parts of absolute ethanol, 40 parts of deionized water, add vinylvinylsilane, methyltrichlorosilane, and absolute ethanol into deionized water, and in a water bath at 40°C at 200r / min Stir at a speed of 10 minutes, keep warm, and obtain a modified solution....

Embodiment 2

[0044] In parts by weight, weigh 110 parts of octamethylcyclotetrasiloxane, 11 parts of N, N-dimethylformamide, 0.11 parts of deionized water, 0.011 parts of magnesium hydroxide, and N, N-dimethyl Add methyl formamide, ionized water, and magnesium hydroxide into octamethylcyclotetrasiloxane, stir and react at 190r / min for 3 hours at 130°C to obtain a reactant, which is placed in a vacuum distillation device, Under the conditions of pressure -0.2MPa and temperature 130°C, distill under reduced pressure for 35 minutes, cool at room temperature to obtain hydroxyl silicone oil, and then weigh 25 parts of nano-silica, 5 parts of methylvinylsilane, and 2 parts by weight. 1 part of methyltrichlorosilane, 25 parts of absolute ethanol, 50 parts of deionized water, add vinylvinylsilane, methyltrichlorosilane and absolute ethanol into deionized water, and use 220r / min in a water bath at 45°C Stir at a speed of 12 minutes, keep warm, and obtain a modified solution. Add nano-silica to the ...

Embodiment 3

[0046] In parts by weight, weigh 120 parts of octamethylcyclotetrasiloxane, 12 parts of N, N-dimethylformamide, 0.12 parts of deionized water, 0.012 parts of magnesium hydroxide, and N, N-dimethyl Add methyl formamide, ionized water and magnesium hydroxide into octamethylcyclotetrasiloxane, stir and react at 200r / min under the condition of 140°C for 4h to obtain the reactant, put the reactant in a vacuum distillation device, Under the conditions of pressure -0.1MPa and temperature 140°C, distill under reduced pressure for 40 minutes, cool at room temperature to obtain hydroxyl silicone oil, and then weigh 30 parts of nano-silica, 6 parts of methylvinylsilane, and 3 parts by weight, respectively. Parts of methyltrichlorosilane, 30 parts of absolute ethanol, 60 parts of deionized water, add vinylvinylsilane, methyltrichlorosilane, and absolute ethanol into deionized water, and in a water bath at 50°C at 240r / min Stir at a rotating speed for 15 minutes, keep warm to obtain a modi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
particle diameteraaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a preparation method of highly-crosslinked organic silicon rubber, and belongs to the technical field of rubber materials. According to the invention, methacrylic acid and nano zinc oxide are added; the highly-crosslinked organic silicon rubber is prepared; nano zinc oxide can form strong interaction with silicone rubber, an excellent reinforcing effect is achieved on thesilicone rubber; methacrylic acid and nano zinc oxide can be subjected to in-situ polymerization reaction in the silicone rubber matrix to form nanoparticles, and reinforce silicone rubber; zinc methacrylate generated by the reaction of methacrylic acid and nano zinc oxide is a multifunctional rubber active auxiliary agent, is capable of realizing graft polymerization with rubber molecules to formmulti-element cross-linked networks, so that reinforcement on rubber is achieved; during the cross-linking process induced by benzoyl peroxide, zinc methacrylate is polymerized in the silicone rubberand is subjected to the grafting reaction with the matrix material, and the nanometer zinc polymethacrylate formed through polymerization is uniformly dispersed in the rubber so as to achieve excellent reinforcing effect.

Description

technical field [0001] The invention relates to a preparation method of highly cross-linked silicone rubber, which belongs to the technical field of rubber materials. Background technique [0002] The backbone of the silicone rubber-based rubber is a silicon-oxygen-silicon bond, and the silicon-oxygen-silicon bond is the same as the inorganic structural unit that forms silicic acid and silicate. At the same time, the silicone rubber base contains silicon-carbon bonds, which make it partly organic. Therefore, silicone rubber is a polymer between organic and inorganic polymers. Therefore, the working temperature range of vulcanized silicone rubber is extremely wide, in the range of -100~350°C. At the same time, silicone rubber has excellent high and low temperature resistance, and has excellent heat dissipation, excellent adhesion, fluidity and mold release properties. Some special silicone rubbers also have excellent oil resistance and solvent resistance. They are widely us...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F220/06C08K9/06C08K3/36C08K3/22C08K5/57
CPCC08F283/10C08K3/22C08K3/36C08K5/57C08K9/06C08K2003/2296C08K2201/011C08F220/06
Inventor 孔祥文
Owner 孔祥文
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com