Manufacturing process of high toughness multilayer structure prepreg

A technology of multi-layer structure and manufacturing process, applied in the direction of lamination, layered products, lamination devices, etc., can solve the problem that the prepreg cannot be used normally, the degree of impregnation of the prepreg is low, and the viscosity of the high-toughness resin is high. problems, to achieve the effect of shortening the heating history, reducing the probability of voids, and reducing the production temperature

Active Publication Date: 2017-09-12
HENGSHEN
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new process to solve a series of problems in the existing high-toughness prepreg production technology in the process of producing high-toughness prepregs that meet the structural design requirements of aerospace, such as high-toughness resins The viscosity is high, resulting in easy damage to the prepreg production equipment or low impregnation degree of the prepreg, and the prepreg cannot be used normally due to the low viscosity of the resin.

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
  • Manufacturing process of high toughness multilayer structure prepreg
  • Manufacturing process of high toughness multilayer structure prepreg
  • Manufacturing process of high toughness multilayer structure prepreg

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] According to the schematic diagram of the prepreg structure, such as figure 1 , detail specific example 1.

[0043] According to the design, the resin content required for the prepreg is 40%, and the fiber surface density is 220g / m 2 , in order to guarantee the CAI value, it is necessary to produce such as figure 1 The epoxy resin prepreg with the seven-layer structure shown is resin layer 1-1, toughening layer 1-2, resin layer 1-3, fiber layer 1-4, resin layer 1-5, toughening layer 1-6. Resin layer 1-7.

[0044] Among them, fiber layers 1-4 are twill carbon fiber fabrics with a fiber surface density of 220 gsm.

[0045] Among them, the four resin layers 1-1, 1-3, 1-5, and 1-7 use the same tough epoxy resin. The resin component is bisphenol A resin system, the toughening agent is polyether ether ketone, and the curing agent is amine curing agent. Among them, the toughening agent part of the resin system accounts for 15%. The resin has a viscosity of 10000 cPs at 9...

Embodiment 2

[0053] According to the schematic diagram of the prepreg structure, such as image 3 , detail the concrete example 2.

[0054] According to the design, the resin content required for the prepreg is 35%, and the fiber surface density is 145g / m 2 , in order to guarantee the CAI value, it is necessary to produce such as image 3 The shown four-layer structure of the cyanate resin prepreg includes a toughening layer 3-1, a resin layer 3-2, a fiber layer 3-3, and a resin layer 3-4.

[0055] Among them, the fiber layer 3-3 has a fiber surface density of 145g / m 2 12K carbon fiber.

[0056] Wherein, the two resin layers 3-2 and 3-4 use the same tough cyanate resin. The resin component is selected from cyanate resin system, the toughening agent is selected from polyether sulfone, and the curing agent is selected from acetylacetonate metal salt. Among them, the toughening agent part of the resin system accounts for 12%. The resin has a viscosity of 5000 cPs at 90°C.

[0057] Wher...

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
diameteraaaaaaaaaa
Login to view more

Abstract

The invention provides a high-toughness multilayer structure prepreg manufacturing process. The prepreg produced is a multilayer structure with more than four layers. On the basis of the three-layer structure of resin layer-fiber layer-resin layer, an additional layer or Multi-layer toughening layer, and correspondingly add multiple layers of resin; this kind of high-toughness multi-layer structure prepreg manufacturing process, only an appropriate amount of toughening agent is added to the mixed resin or no toughening agent is added, while other The toughening agent exists in the form of a toughening layer, which ensures that the viscosity of the resin is low enough to be suitable for the production of ordinary coating equipment during coating, and will not cause damage to the equipment due to too high a viscosity of the resin. This method is used in The impregnation degree of the prepreg is high during impregnation, which reduces the probability of voids in the subsequent curing of the product, greatly improves the compressive strength of the product after impact, and correspondingly increases the service life and storage life of the prepreg.

Description

technical field [0001] The invention relates to a high-toughness multilayer structure prepreg manufacturing process, and relates to the prepreg manufacture using toughness resin as a matrix. Background technique [0002] With the development of the times and the progress of science, resin-based composite materials are more and more widely used in aerospace, rail transportation, marine equipment and new energy and other fields. Especially in the field of aerospace, it has become the most concerned direction for the development of resin-based composite materials. [0003] Generally speaking, one of the necessary conditions for the resin-based composite materials used as the main load-bearing structural parts and secondary load-bearing structural parts of the aircraft body is to have high toughness, and the toughness of resin-based composite materials can be determined by its impact Characterized by compressive strength after impact (CAI), high toughness means high compressive...

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): B32B27/12B32B27/20B32B37/02B32B37/14B32B37/06B32B38/08C08J5/24
CPCB32B27/12B32B27/20B32B37/02B32B37/06B32B37/14B32B38/08B32B2250/04B32B2250/05B32B2260/02B32B2307/70B32B2605/18C08J5/24
Inventor 吕伟单瑞俊陈帅金岳伟常金周强
Owner HENGSHEN
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap