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

Silane modified silicon carbide fiber and preparation method thereof

A technology of silicon carbide fiber and silane modification, applied in the field of materials, can solve the problems of low stability of composite materials, and achieve the effects of good mechanical stability, promotion of epoxy crosslinking, good strength and toughness

Inactive Publication Date: 2019-07-26
宁波众兴新材料科技有限公司
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, at present, the stability of composite materials prepared from silicon carbide fibers is low, so how to improve the stability of composite materials is the focus of current research

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

preparation example Construction

[0023] A preparation method of silane modified silicon carbide fiber, comprising the following steps:

[0024] (1) Take the silane coupling agent kh550, add it to 13 times the weight of absolute ethanol, raise the temperature to 50°C, add silicon carbide fiber, keep stirring for 1 hour, distill off the ethanol to obtain the aminosilane modified polymer ;

[0025] (2) Mix 2,2-dimethylolpropionic acid and ethyl orthosilicate, add to deionized water 36 times the weight of the mixture, stir and react for 3 hours to obtain a sol solution;

[0026] (3) Take the above-mentioned aminosilane-modified polymer, add it to the sol solution, raise the temperature to 70°C, heat and stir for 1 hour, filter with suction, wash the filter cake with water, send it to a sintering furnace, and dry it at 170°C After 3 hours, cool to normal temperature to obtain fiber sol;

[0027] (4) Mix polyamide wax micropowder and barium stearate, add to toluene which is 6 times the weight of the mixture, and ...

Embodiment 2

[0032] A silane-modified silicon carbide fiber, comprising the following raw materials in parts by weight:

[0033] Silicon carbide fiber 140, silane coupling agent kh550 3, 2,2-dimethylolpropionic acid 4, orthosilicate 40, polyamide wax micropowder 5, glycidol 2, barium stearate 3, formazan Methyl acrylate 20, catalyst 0.1, polytetrafluoroethylene 8, triethylamine 1.

[0034] The catalyst is lithium methylate.

[0035] A preparation method of silane modified silicon carbide fiber, comprising the following steps:

[0036] (1) Take the silane coupling agent kh550, add it to 20 times the weight of absolute ethanol, raise the temperature to 55°C, add silicon carbide fiber, keep stirring for 2 hours, distill off the ethanol to obtain the aminosilane modified polymer ;

[0037] (2) Mix 2,2-dimethylolpropionic acid and ethyl orthosilicate, add to deionized water 40 times the weight of the mixture, stir and react for 5 hours to obtain a sol solution;

[0038] (3) Take the above-m...

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
Bending strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Fracture toughnessaaaaaaaaaa
Login to View More

Abstract

The invention discloses silane modified silicon carbide fiber which comprises, by weight, 120-140 parts of silicon carbide fiber, 1-3 parts of silane coupling agent kh550, 2-4 parts of 2, 2-dimethylolpropionic acid, 30-40 parts of ethyl orthosilicate, 3-5 parts of polyamide wax micropowder, 1-2 parts of glycidol, 2-3 parts of barium stearate, 16-20 parts of methyl methacrylate, 0.07-0.1 part of catalyst, 5-8 parts of polytef and 0.8-1 part of triethylamine. A finished product composite material obtained by the silane modified silicon carbide fiber has high strength and toughness, high mechanical stability and excellent comprehensive performance.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a silane-modified silicon carbide fiber and a preparation method thereof. Background technique [0002] Silicon carbide fiber is an inorganic fiber with β-silicon carbide structure made from organosilicon compound by spinning, carbonization or vapor deposition. It belongs to ceramic fiber. The strength and oxidation resistance are better than carbon fiber, the strength reaches 1960-4410MPa, the strength retention rate is above 80% at the highest service temperature, the modulus is 176.4-294GPa, and the chemical stability is also good. [0003] Silicon carbide fibers are mainly used as high temperature resistant materials and reinforcing materials. High temperature resistant materials include heat shielding materials, high temperature resistant conveyor belts, filter cloths for filtering high temperature gases or molten metals, etc. When used as a reinforcing material, it 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
IPC IPC(8): C08L33/12C08L27/18C08L77/00C08K9/06C08K7/10C08K5/09C04B41/00
CPCC04B41/009C08L33/12C08L2205/03C04B35/565C08L27/18C08L77/00C08K9/06C08K7/10C08K5/09
Inventor 田仕昂
Owner 宁波众兴新材料科技有限公司
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