Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing vinyl-containing hydrophobic silicone nano-particles

A hydrophobic organosilicon and nanoparticle technology, which is applied in the field of preparation of hydrophobic organosilicon nanoparticles, can solve the problems of poor compatibility and dispersibility of organic polymers, large polarity, etc., and achieves the effects of fast process and simple preparation method.

Inactive Publication Date: 2018-11-30
FUJIAN AGRI & FORESTRY UNIV
View PDF1 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most nanopowders are hydrophilic, highly polar, and have poor compatibility and dispersion with organic polymers, so surface modification or modification of nanopowders is necessary

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing vinyl-containing hydrophobic silicone nano-particles
  • Method for preparing vinyl-containing hydrophobic silicone nano-particles
  • Method for preparing vinyl-containing hydrophobic silicone nano-particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) Mix 9.69 g of tetramethyltetravinyl cyclotetrasiloxane and 7.5 g of hydrogen-containing silicone oil (with a hydrogen content of 1.5%) (that is, the -Si-H bond of hydrogen-containing silicone oil and tetramethyltetravinyl The molar ratio of cyclotetrasiloxane is 4:1), add 8 d Kastredt catalyst and stir evenly; let it stand at room temperature until the cured silicone resin is obtained.

[0027] (2) The silicone resin obtained in the step (1) is pulverized into nanopowder by ball milling.

Embodiment 2

[0029] (1) Mix 9.69 g of tetramethyltetravinyl cyclotetrasiloxane and 3.75 g of hydrogen-containing silicone oil (with a hydrogen content of 1.5%) (that is, the -Si-H bond of hydrogen-containing silicone oil and tetramethyltetravinyl The molar ratio of cyclotetrasiloxane is 2:1), add 7 d Kastredt catalyst and stir evenly; let it stand at 80 ℃ until the cured silicone resin is obtained.

[0030] (2) The silicone resin obtained in the step (1) is pulverized into nanopowder by ball milling.

Embodiment 3

[0032] (1) Mix 9.69 g of tetramethyltetravinyl cyclotetrasiloxane and 2.5 g of hydrogen-containing silicone oil (with a hydrogen content of 1.5%) (that is, the -Si-H bond of hydrogen-containing silicone oil and tetramethyltetravinyl The molar ratio of cyclotetrasiloxane is 4:3), add 6 d Kastredt catalyst and stir evenly; let it stand at 50 ℃ until the cured silicone resin is obtained.

[0033] (2) The silicone resin obtained in the step (1) is pulverized into nanopowder by ball milling.

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

No PUM Login to View More

Abstract

The invention belongs to the technical field of silicone modification, and concretely relates to a method for preparing vinyl-containing hydrophobic silicone nano-particles. The method mainly comprises the following steps: mixing hydrogen-containing silicone oil with tetramethyltetravinylcyclotetrasiloxane according to a certain mass ratio, carrying out an addition reaction on the -Si-H bond of the hydrogen-containing silicone oil and the vinyl group of the tetramethyltetravinylcyclotetrasiloxane under the action of a Kastredt catalyst (a complex of chloroplatinic acid and tetramethyldivinyldisiloxane), and carrying out cross-linking curing to obtain vinyl-containing silicone resin. The silicone resin is ball-milled to obtain the nano-particles, the surface of the nano-particles is rich invinyl groups, and is different from that of existing hydrophobic materials, and the nano-particles have a superior hydrophobic property and is reactive.

Description

technical field [0001] The invention belongs to a method for preparing hydrophobic nano-silica particles, in particular to a method for preparing vinyl-containing hydrophobic organic silicon nanoparticles. Background technique [0002] In scientific research or industrial production, nanopowders are used to fill plastics, rubber, etc. due to their large specific surface area, high activity, and low melting point. However, most nanopowders are hydrophilic, highly polar, and have poor compatibility and dispersion with organic polymers. Therefore, surface modification or modification of nanopowders is necessary. Many existing hydrophobic nanoparticles only have hydrophobic properties. The nanoparticles prepared by the present invention not only have excellent hydrophobic properties, but also have reactivity. When used as a reinforcing agent for addition-type silicone rubber, they can be combined with rubber components The hydrogen-containing silicone oil reacts to improve the ...

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): C08G77/44C08J3/12C08L83/10
CPCC08G77/44C08J3/12C08J2383/10
Inventor 张欣向卓嘉宁黄雨东胡晓勇尤雪清杨文斌
Owner FUJIAN AGRI & FORESTRY UNIV