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

Preparation method cyano-alkyl and polyether co-modified polysiloxane

A technology of cyanohydrocarbyl silane and polysiloxane, which is applied in the chemical industry, can solve the problems of silicon-based oils with single structure, low heat resistance, and unsuitability for high-speed preparation of carbon fibers, so as to reduce surface defects and static electricity accumulation, prevent thermal The effect of fusion bonding

Active Publication Date: 2016-02-24
GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the carbon fiber precursor treated with the oil agent made of heat-resistant resin alone has poor bundling properties and is not suitable for high-speed preparation of carbon fibers.
The emulsion prepared by mixing heat-resistant resin and silicone oil, due to the difference in compatibility between silicone oil and ester compounds, the emulsion cannot form a uniform and stable protective film on the surface of the carbon fiber precursor fiber, and cannot obtain stable carbon fiber
Polyol ester / polyether co-modified silicone oil is emulsified, because the compound with three ester groups is difficult to ensure the bundling of the precursor fiber in the pre-oxidation stage, and the polyol ester / polyether co-modified silicone oil Due to its low heat resistance, it cannot completely inhibit the inter-fiber bonding in the stages of pre-oxidation and low-temperature carbonization
[0011] Moreover, the structure of existing silicone oil agents is relatively simple, and it is rare to see silicone oil agents co-modified by two groups

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
  • Preparation method cyano-alkyl and polyether co-modified polysiloxane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] Cyanohydrocarbyl polyether co-modified polysiloxane C1 is prepared by the following steps: add 8.00 grams of cyanoethylsilane hydrolyzate obtained by hydrolysis of cyanoethylmethyldimethoxysilane into a reaction flask in a nitrogen atmosphere, 20.00 grams of side chain modified polyether silicone oil with a molecular weight of 700 and an EO number of 8, 69.00 grams of octamethylcyclotetrasiloxane, adding 0.01 grams of sodium hydroxide as a catalyst, and 3.00 grams of hexamethyldisiloxane as a capping The reaction was carried out under stirring conditions at 130° C., and the reaction time was 1 hour.

Embodiment 2

[0059] Cyanohydrocarbyl polyether co-modified polysiloxane C2 is prepared by the following steps: add 48.00 grams of cyanoethylsilane hydrolyzate obtained by hydrolysis of cyanoethylmethyldimethoxysilane into a reaction flask in a nitrogen atmosphere, 20.00 grams of side chain modified polyether silicone oil with a molecular weight of 15,000 and an EO number of 16, 44.00 grams of octamethylcyclotetrasiloxane, adding 0.01 grams of sodium hydroxide as a catalyst, and 2.00 grams of hexamethyldisiloxane as a capping The reaction was carried out under stirring conditions at 100°C, and the reaction time was 4 hours.

Embodiment 3

[0061] Cyanohydrocarbyl polyether co-modified polysiloxane C3 is prepared by the following steps: add 48.00 grams of cyanoethylsilane hydrolyzate obtained by hydrolysis of cyanoethylmethyldimethoxysilane into a reaction flask in a nitrogen atmosphere, 20.00 grams of side chain modified polyether silicone oil with a molecular weight of 1200 and an EO number of 16, 44.00 grams of octamethylcyclotetrasiloxane, adding 0.01 grams of sodium hydroxide as a catalyst, and 3.00 grams of hexamethyldisiloxane as a capping The reaction was carried out under the condition of stirring at 90° C., and the reaction time was 6 hours.

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
Login to View More

Abstract

The invention provides a preparation method of cyano-alkyl and polyether co-modified polysiloxane. The method includes the following steps that cyano-alkyl silane is hydrolyzed, cyano-alkyl silane hydrolyzate is obtained, an alkali catalyst is added into the cyano-alkyl silane hydrolyzate, a polyether silicon oil and cyclosiloxane under protection of inert gas, and reaction is performed at 80-130 DEG C; the cyano-alkyl and polyether co-modified polysiloxane is prepared; the content of cyano groups in the cyano-alkyl and polyether co-modified polysiloxane is 0.05-5 mmol / g, the molecular weight of the polyether silicon oil is 500-100,000, the number of EOs in the polyether silicon oil is 3-100, and the number of POs in the polyether silicon oil is 0-40. The cyano-alkyl and polyether co-modified polysiloxane prepared through the method can serve as auxiliaries for producing high-performance carbon fibers. Particularly, the cyano-alkyl and polyether co-modified polysiloxane can serve as silicon oil agents for producing carbon fibers and can effectively moisten the surfaces of the fibers, reduce friction between the fibers and friction between the fibers and a guide roller, reduce surface defects and electrostatic accumulation caused by friction, and effectively prevent hot-melting adhesion of precursor fibers at the pre-oxidization stage and at the low-temperature carbonization stage.

Description

technical field [0001] The invention belongs to the field of chemical industry, and in particular relates to a preparation method of cyanocarbon group and polyether co-modified polysiloxane, cyanocarbon group and polyether co-modified polysiloxane prepared by the method and application thereof. Background technique [0002] Carbon fiber is a military-civilian industrial material with unique properties. It has better specific strength and specific modulus than metal and plastic. Composite materials produced with carbon fiber have been widely used in aerospace, aviation, sports equipment, and power blades. , pressure vessels, automobiles and other fields. The requirements for the strength and modulus of carbon fiber in aerospace, cable and other fields are increasing day by day. At the same time, the requirements for the stabilization of carbon fiber production are also getting higher and higher. [0003] Now the most common method for industrial production of carbon fiber is...

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): C08G77/388C08G77/38C08G77/08C08G77/06D06M15/647D06M101/40
Inventor 黄振宏林汉国武振刚黄辛
Owner GUANGDONG BIOMAX SIANDF NEW MATERIAL CO LTD
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