Bag molding method of composite material component

A composite material component and molding method technology, which is applied in the field of bag press forming composite materials, can solve the problems of forming wrinkles on the surface of the blank, bridging holes, scrapping composite material components, and breaking vacuum bags, etc., and achieves good deformability, Not easy to wrinkle, good fit

Inactive Publication Date: 2018-08-17
CHENGDU AIRCRAFT INDUSTRY GROUP
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Separation, wrinkling, and bridging in the corner area, which cannot be found by existing means, lead to the curing process. In the traditional bag molding process, due to the poor ductility, poor deformability, and no stickiness of vacuum auxiliary materials such as release cloth, After the vacuum bag system is assembled, there may be slippage between the vacuum bag auxiliary material and the blank, and the external pressure and vacuum pressure in the vacuum bag system

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
  • Bag molding method of composite material component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] See figure 1 , a bag press forming method of a composite member of the present invention, comprising the following steps:

[0014] When the curing temperature is 220°C±5°C, choose heat-resistant plastic fabric R85PA66;

[0015] Lay composite material blank 2 on the surface of tooling 1 according to the specified angle, place a circle of vulcanized rubber retaining strip 7 around the blank 2; spread a layer of temperature-resistant plastic fabric 3 on the composite material blank; heat-resistant plastic fabric The surface is covered with a porous isolation film 4; a layer of non-porous isolation film 5 is tiled on the porous isolation film 4; a breathable cloth 6 is placed around the blank 2; a vacuum bag 8 is sealed with a sealing strip 9, vacuumized, and placed The curing and molding are completed in an oven or autoclave according to the specified curing process parameters.

[0016] The temperature-resistant plastic fabric 3 can also replace the release cloth, the po...

Embodiment 2

[0020] A bag press forming method for composite material components. When the curing temperature is 120 ° C ± 5 ° C, the temperature-resistant plastic fabric Bleeder lease B or KZ85PA is selected; the composite material blank 2 is laid on the surface of the tooling 1 according to the specified angle, and the blank 2 Place a circle of vulcanized rubber retaining strips 7 around the periphery; spread a layer of temperature-resistant plastic fabric 3 on the composite material blank; spread a porous isolation film 4 on the surface of the temperature-resistant plastic fabric; Layer non-porous isolation film 5; place air-permeable cloth 6 around the blank 2; seal the vacuum bag 8 with a sealing strip 9, vacuumize it, put it into an oven or autoclave according to the specified curing process parameters to complete the curing and molding.

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

No PUM Login to view more

Abstract

The invention discloses a bag molding method of a composite material component. A layer of temperature-resistant plastic fabric with good ductility, adhesive suction function, breathability and inadhesion to the surface of a composite material is paved on the surface of a composite material blank so as to replace release cloth, a porous isolating membrane, adhesive suction cloth and breathable cloth, so that the surface quality of the composite material component is ensured, and meanwhile, the simplicity in operation is realized. The temperature-resistant plastic fabric adopted by the invention has the characteristics of good deformability, good ductility, good conformability to a complex surface, difficulty in wrinkling, adhesive suction and breathability, and the method is simple to operate and can ensure that pressure is uniformly transmitted to the composite material blank during a curing process; and the surface quality of the composite material component is effectively ensured, the defects such as wrinkles, shortage of adhesives and excess in adhesives occurring on the cured surface are overcome, and the occurrence of the problem that large-area pores of the component are caused by vacuum bag breakage due to bridging of vacuum bag auxiliary materials can be prevented.

Description

technical field [0001] The invention relates to composite material forming technology, especially the technology of bag press forming composite material. Background technique [0002] The bag press molding method of composite materials is usually to attach the outer surface of the composite component blank to the surface of the forming tooling, and place the release cloth, porous isolation film, absorbent cloth, non-porous isolation film, breathable cloth and Vacuum bag auxiliary materials such as vacuum bag, and then seal the vacuum bag with sealing tape to form a vacuum bag system, put it into an oven or autoclave according to the specified curing process parameters to complete the curing and molding. Separation, wrinkling, and bridging in the corner area, which cannot be found by existing means, lead to the curing process. In the traditional bag molding process, due to the poor ductility, poor deformability, and no stickiness of vacuum auxiliary materials such as releas...

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): B29C70/34
CPCB29C70/342
Inventor 何凯罗美兰徐恒元
Owner CHENGDU AIRCRAFT INDUSTRY GROUP
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