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High-interlaminar-shear-performance high-toughness carbon fiber/epoxy resin composite material and preparation method thereof

A technology of epoxy resin and composite materials, which is applied in the field of materials, can solve problems affecting the performance of the matrix and achieve the effect of improving stiffness

Active Publication Date: 2020-05-22
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, nano-silica is traditionally used to strengthen and toughen epoxy resin. Although solid nanoparticles can improve the mechanical properties and thermal stability of epoxy resin at the same time, its agglomeration phenomenon and interface problems will affect the performance of the matrix.
[0005] At present, more and more people are beginning to study the influence of core-shell structure polymers on improving the modulus of resins. However, the core-shell structure polymers used for epoxy resin reinforcement are all isotropic rigid spherical particles. , although this method has a certain effect of stiffening and toughening, the interface between it and the epoxy resin matrix still needs to be improved.

Method used

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  • High-interlaminar-shear-performance high-toughness carbon fiber/epoxy resin composite material and preparation method thereof

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Embodiment 1

[0028] The present embodiment provides a kind of interlayer shearing high tenacity carbon fiber / epoxy resin composite material, composite material comprises carbon fiber, epoxy resin and the modified SiO dispersed in this epoxy resin 2 @PDVB Janus particles. Carbon fiber, epoxy resin and modified SiO 2 @PDVB Janus particles have a mass ratio of 20:100:4. Modified SiO 2 @PDVB Janus particles for SiO by TETA 2 Particles modified by @PDVB Janus particles, namely TETA-SiO 2 @PDVB Janus particles.

[0029] TETA-SiO 2 The preparation method of @PDVB Janus particles is as follows: First, prepare SiO 2 nanoparticles and PDVB / PS hollow particles; then, the SiO 2 Nanoparticles and PDVB / PS hollow particles were mixed and subjected to a sol-gel process with ammonia to obtain SiO 2 @PDVB / PS Janus particles, and then use N,N-dimethylacetamide (DMF) to remove PS to obtain SiO 2 @PDVBJanus particles; finally, using H 2 o 2 and HCl activation treatment of SiO 2 @PDVB Janus particle...

Embodiment 2

[0037] The present embodiment provides a kind of interlayer shearing high tenacity carbon fiber / epoxy resin composite material, composite material comprises carbon fiber, epoxy resin and the modified SiO dispersed in this epoxy resin 2 @PDVB Janus particles. Carbon fiber, epoxy resin and modified SiO 2 @PDVB Janus particles have a mass ratio of 20:100:4. Modified SiO 2 @PDVB Janus particles for SiO by KH570 2 Particles modified by @PDVB Janus particles, namely KH570-SiO 2 @PDVB Janus particles.

[0038] KH570-SiO 2 The preparation method of @PDVB Janus particles is as follows: First, prepare SiO 2 nanoparticles and PDVB / PS hollow particles; then, the SiO 2 Nanoparticles and PDVB / PS hollow particles were mixed and subjected to a sol-gel process with ammonia to obtain SiO 2 @PDVB / PS Janus particles, and then use N,N-dimethylacetamide (DMF) to remove PS to obtain SiO 2 @PDVBJanus particles; finally, using H 2 o 2 and HCl activation treatment of SiO 2 @PDVB Janus parti...

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Abstract

The invention discloses a high-interlaminar-shear-performance high-toughness carbon fiber / epoxy resin composite material and a preparation method thereof. The composite material comprises carbon fibers, epoxy resin and modified SiO2@PDVB Janus particles dispersed in the epoxy resin, wherein the mass ratio of the carbon fibers, the epoxy resin and the modified SiO2@PDVB Janus particles is 20:100:4;and the modified SiO2@PDVB Janus particles are particles obtained by modifying SiO2@PDVB Janus particles by using TETA or KH570. The modified SiO2@PDVB Janus particles enable the carbon fiber composite material to obtain good toughness, and also enable the interface bonding of the matrix resin and the carbon fibers to be firmer, so that the prepared nanofiber composite material has excellent interlaminar shear performance and good toughness.

Description

technical field [0001] The invention belongs to the field of materials, and relates to a carbon fiber / epoxy resin composite material, in particular to an interlayer shear high-toughness carbon fiber / epoxy resin composite material and a preparation method thereof. Background technique [0002] Carbon fiber has excellent properties such as small thermal expansion coefficient, high tensile modulus, good dimensional stability, light weight and high strength, and is widely used in solar panels, precision optical and electronic instruments, aerospace satellite parts and other fields. In recent years, the production process of domestic high-modulus carbon fiber has gradually developed, and relevant domestic research institutes have also broken through the technical difficulties of producing high-modulus carbon fiber such as M40J, but the matching problem with the resin matrix still needs to be solved. [0003] Good interfacial compatibility and performance matching between high-mod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08L25/02C08K13/06C08K7/06C08K3/36C08K9/04C08K9/06
CPCC08K2201/011C08L63/00C08L25/02C08K13/06C08K7/06C08K3/36C08K9/04C08K9/06
Inventor 姚正军金利强朱华平陆川军
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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