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

A kind of anti-atomic oxygen modified prepreg, composite material and preparation method thereof

A technology resistant to atomic oxygen and composite materials, which is applied in epoxy resin coatings, chemical instruments and methods, polyether coatings, etc., can solve the problems of affecting the mechanical properties of materials, material weight gain, insufficient atomic oxygen barrier ability, etc., and achieve improved The effect of interlayer mechanical properties

Active Publication Date: 2020-10-16
AVIC BASIC TECH RES INST
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when filled with granular nanomaterials, the barrier ability to atomic oxygen is insufficient when the content is low. In addition, when the content is high, it will seriously affect the mechanical properties of the material, seriously affect the process performance, and increase the weight of the material.

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
  • A kind of anti-atomic oxygen modified prepreg, composite material and preparation method thereof
  • A kind of anti-atomic oxygen modified prepreg, composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] see figure 1 , the embodiment of the present application shows a method for preparing a composite material prepared from an atomic oxygen-resistant modified prepreg, characterized in that the method includes:

[0034] S101 Lay up the atomic oxygen-resistant prepregs in sequence to obtain a prefabricated body;

[0035] S102 The attached thin layer faces one direction so that each layer has a thin layer of atomic oxygen resistance, and the two outer surfaces are not paved or a layer of atomic oxygen resistant thin layer is laid, and then the prepreg molding and curing process conditions are followed. solidified.

[0036] The core of the technical solution of the present invention is to obtain a composite material that is resistant to the barrier effect of atomic oxygen layer by layer. Damage, fatigue or impact delamination damage, pore defects, etc. continue to play a role in blocking atomic oxygen erosion, compatible with existing material systems, and can further impr...

Embodiment 1

[0042] The implementation process of the technical solution of the present invention is as follows:

[0043] (1-1) Dissolve 20g or 35g of polyphenylsulfone diphenylphosphonate (PSPPP) with a number average molecular weight of 25,000 and 25g of phenolphthalein-modified polyaryletherketone (PEK-C) in N,N-bis Methylformamide (DMF), keep the environment dry, cast the solution into a film, control the final film thickness at 16 μm or 25 μm by the amount of solution, blow dry at 80°C for 1 hour, and then vacuum dry at 100°C for 6 hours Or 12 hours, after taking off the film, a thin layer with excellent resistance to atomic oxygen was obtained.

[0044] (1-2) Take the thin layer with excellent atomic oxygen resistance obtained above, and take epoxy resin carbon fiber prepreg, wherein the carbon fiber is T300, 3K or T800, 12K, and the grade of epoxy resin is 5228 (China Aviation Composites Co., Ltd. company product), lay the film on one side of the prepreg, and use a hot iron to make...

Embodiment 2

[0049] The implementation process of the technical solution of the present invention is as follows:

[0050] (2-1) 40g of polyphenylsulfone diphenylphosphonate (PSPPP) with a number average molecular weight of 35,000 or 28g of boron-modified novolac resin with a number average molecular weight of 15,000 or more, and 25g of benzoxazine (BOZ) resin were dissolved together In 120mL of N,N-dimethylformamide, add 1.2g of boron nitride nanosheets or nano-layered silicate clay, add 1g of silane coupling agent, ultrasonically disperse evenly, and set aside. Coating film and controlling the final film thickness, one is 100 μm or 150 μm, the other is 15 μm or 28 μm, after fully drying in the oven, stick the film with a thickness of 15 μm or 28 μm on the benzoxazine (BOZ) resin carbon fiber prepreg The surface of the impregnated material is heated up to 60°C to soften and the two are attached together to obtain a benzoxazine (BOZ) resin carbon fiber prepreg resistant to atomic oxygen.

...

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
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The embodiments of the invention disclose atomic oxygen resistant modified prepreg, a composite material and a preparation method therefor. According to the technical scheme disclosed by the embodiments of the invention, through designing materials and a structure of a composite material according to structure and failure characteristics of the laminated continuous fiber resin based composite material, the final composite material can have a superficial and interlayer layer-upon-layer atomic oxygen resistant isolating action, meanwhile, the atomic oxygen resistance problem of the composite material caused by superficial and internal microcracks, defects and damage is inhibited, and meanwhile, the interlayer mechanical properties of the composite material can be improved to a certain extent, so that the high-atomic-oxygen-resistance high-performance continuous fiber resin based composite material and a preparation technology therefor are developed.

Description

technical field [0001] The invention belongs to the technical field of structural composite materials, and relates to an atomic oxygen-resistant modified prepreg, a composite material and a preparation method thereof. Background technique [0002] The proportion of fiber-reinforced resin-based composite materials in the structural weight of aircraft and space vehicles has increased significantly, and the use of parts has become more extensive. After flying in near-Earth orbit, the aircraft will inevitably face the influence of the new space environment. When its structural parts are directly exposed to the space environment, they will be subjected to atomic oxygen, ultraviolet radiation, high-energy charged particles, and thermal cycles during orbital operation. , Space environment impacts such as space orbit flying objects impact, especially the damage is more obvious under the action of atomic oxygen. The main destruction method of atomic oxygen is to cause severe erosion...

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 Patents(China)
IPC IPC(8): B32B9/00B32B9/04B32B17/02B32B17/12B32B27/02B32B27/04B32B27/06B32B27/18B32B27/28B32B27/34B32B27/38B32B27/42B32B37/02B32B37/06B32B37/10C08L85/02C08L71/10C08L61/14C08L61/34C08L79/08C08K9/04C08K9/06C08K7/06C08K7/00C08K3/04C08J5/18C08J5/24C08J7/04C09D171/08C09D183/10C09D163/00C09D161/14C09D7/62
Inventor 郭妙才
Owner AVIC BASIC TECH RES INST
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