Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cationic silicon rubber micropowder, and preparation method and application thereof

A technology of silicone rubber micropowder and cation, which is applied in the field of silicone rubber micropowder, can solve the problems of charge repulsion, reinforcement and modification effect reduction, etc., achieve low cost, good compatibility and dispersion, and improve the effect of impact strength

Inactive Publication Date: 2014-10-08
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
View PDF2 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Traditional silicone rubber emulsions can be divided into three categories: anionic silicone rubber emulsion, cationic silicone rubber emulsion and nonionic silicone rubber emulsion according to the type of emulsifier added. Mainly, but for the processing and modification of some cationic substrates, there will be charge repulsion and phase separation or even layering, and the reinforcement and modification effects will be greatly reduced with time.

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
  • Cationic silicon rubber micropowder, and preparation method and application thereof
  • Cationic silicon rubber micropowder, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1: the preparation of cationic silicone rubber micropowder

[0035] (1) Add 1g of octadecyltrimethylammonium chloride, 0.5g of potassium hydroxide and 1g of isomeric tridecyl alcohol polyoxyethylene ether into a 500mL glass cup, and dissolve them in 65.5g of water. After fully dissolving, add 30g octamethylcyclotetrasiloxane (D4 ), stirring to make it evenly mixed, then high-speed shearing (5000 rpm) in a shear emulsifying mixer for 10 minutes, the resulting mixed solution was transferred to a high-pressure homogenizer, and homogenized for 2-3 Second, an organosiloxane monomer pre-emulsion is formed.

[0036] (2) Pour the organosiloxane monomer pre-emulsion obtained by high-pressure homogenization into a 500mL four-necked flask, heat to 60°C, keep stirring at 500 rpm for 10min, and react for 5 hours to obtain linear polysiloxane alkane emulsion;

[0037] (3) Cool the above-mentioned linear polysiloxane emulsion to 50°C, add 1.5g of tetraethyl orthosilicate ...

Embodiment 2

[0038] Embodiment 2: the preparation of cationic silicone rubber micropowder

[0039] (1) Add 1.5g of octadecyltrimethylammonium chloride, 1.5g of potassium hydroxide and 0.5g of isomeric tridecyl alcohol polyoxyethylene ether into a 500mL glass cup, dissolve with 65.0g of water, and wait until fully dissolved , add 30g octamethylcyclotetrasiloxane (D 4 ), stirring to make it evenly mixed, then high-speed shearing (5000 rpm) in a shear emulsifying mixer for 10 minutes, the resulting mixed solution was transferred to a high-pressure homogenizer, and homogenized for 2-3 Second, an organosiloxane monomer pre-emulsion is formed.

[0040] (2) Pour the organosiloxane monomer pre-emulsion obtained by high-pressure homogenization into a 500mL four-neck flask, heat to 65°C, keep stirring at 500 rpm for 10min, and react for 6 hours to obtain linear polysiloxane alkane emulsion;

[0041] (3) Cool the above-mentioned linear polysiloxane emulsion to 55°C, add 1.5g of γ-aminopropyltrieth...

Embodiment 3

[0042] Embodiment 3: the preparation of cationic silicone rubber micropowder

[0043] (1) Add 1.5g of octadecyltrimethylammonium chloride, 1.0g of sodium hydroxide and 1.5g of isomeric tridecyl alcohol polyoxyethylene ether into a 500mL glass cup, dissolve with 64.0g of water, and wait until fully dissolved , add 30g octamethylcyclotetrasiloxane (D 4 ), stirring to make it evenly mixed, then high-speed shearing (5000 rpm) in a shear emulsifying mixer for 10 minutes, the resulting mixed solution was transferred to a high-pressure homogenizer, and homogenized for 2-3 Second, an organosiloxane monomer pre-emulsion is formed.

[0044] (2) Pour the organosiloxane monomer pre-emulsion obtained by high-pressure homogenization into a 500mL four-necked flask, heat to 70°C, keep stirring at 500 rpm for 10 minutes, and react for 7 hours to obtain linear polysiloxane alkane emulsion;

[0045] (3) Cool the above-mentioned linear polysiloxane emulsion to 60°C, add 2.0g of tetraethyl orth...

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of silicon rubber micropowders, and discloses a high-dispersity aging-resistant high-impact-resistance cationic silicon rubber micropowder, and a preparation method and application thereof. The preparation method comprises the following steps: polymerizing organosiloxane monomer under the actions of a composite surfactant and a catalyst to obtain a linear polysiloxane emulsion, sequentially adding a crosslinking agent and a reinforcing agent to obtain an organic silicon rubber emulsion, and carrying out spray drying on the emulsion to form, thereby obtaining the cationic silicon rubber micropowder. The cationic silicon rubber micropowder is prepared by the emulsion polymerization method; the preparation method has the advantage of fewer steps, lower cost, higher safety and environment friendliness; and the silicon rubber micropowder has the advantages of favorable impact resistance, favorable dispersity and favorable compatibility, and can be used in processing modification of anionic substrates to enhance the impact resistance of the material.

Description

technical field [0001] The invention belongs to the field of silicone rubber micropowder, and in particular relates to a cationic silicone rubber micropowder with excellent wettability, aging resistance and impact resistance, suitable for processing and modification of anionic substrates, and a preparation method and application thereof. Background technique [0002] Silicone rubber micropowder, which can be obtained after dehydration of silicone rubber emulsion by spray drying and other methods, has good dispersion and compatibility in organic materials, and can be added to other polymer materials as an admixture to improve The impact strength, lubricity and processing performance of the material, especially the silicone rubber micropowder prepared by cationic emulsion polymerization, can be used as a filler or reinforcing agent for anionic substrates with its special cationic emulsified layer structure. However, the liquid silicone rubber obtained by emulsion polymerizatio...

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): C08L83/04C08K3/36C08K5/5415C08K5/544C08K5/5435C08G77/06
Inventor 沈敏敏翟俊菱孙淳宁王俊凤
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap 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