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Fast preparation method of high-performance composite material sheet

A composite material and high-performance technology, applied in the field of machining, can solve the problems of high investment cost of autoclave, unfavorable development of low-cost composite material sheets, and limited molding time

Inactive Publication Date: 2018-12-07
AVIC COMPOSITES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The autoclave forming method is one of the main methods for forming high-performance composite material sheets, but the investment cost of the autoclave is large and the energy consumption is high, which is not conducive to the low-cost development of composite material sheets
At present, the main production process methods of low-cost composite material sheets include pultrusion molding process and compression molding process. Features: The compression molding process mostly uses prepregs to press according to the predetermined layup. The size of the sheet is limited by the molding mold, and the molding time is limited by the curing time of the resin. At the same time, the intermediate material prepreg is required, and the cost increases

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The carbon fiber plain weave fabric sheet is prepared by using a medium-temperature rapid curing resin at 150°C / 5min. The thickness of the sheet is 0.2mm, and the resin content is expected to be 35%±5%. First, use a film machine to prepare a resin film with an area density of 53±2g / m 2 , the film preparation temperature is 70°C, the film preparation speed is 10m / min, the film is coated on the polytetrafluoroethylene film, and the film is covered with PE pearlescent film. Use 200g / m 2 Carbon fiber plain weave fabric with fiber area density, using a prepreg machine to compound and cure the fabric and film, the temperature of the first pair of hot rollers is set at 130°C±5°C, the temperature of the first hot plate is set at 130±5°C, and the temperature of the second The temperature setting temperature of the second pair of hot rollers is 150±3°C, and the pressure is 1~2MPa. ~2MPa, the vehicle speed is set at 1.5m / min. After winding, a 0.2 mm thick carbon fiber plain fab...

Embodiment 2

[0019] The carbon fiber plain weave fabric sheet is prepared by using a medium-temperature rapid curing resin at 180°C / 5min. The thickness of the sheet is 0.2mm, and the resin content is expected to be 35%±5%. First, use a film machine to prepare a resin film with an area density of 53±2g / m 2 , the film preparation temperature is 70°C, the film preparation speed is 10m / min, the film is coated on the polytetrafluoroethylene film, and the film is covered with PE pearlescent film. Use 200g / m 2 Carbon fiber plain weave fabric with fiber surface density, using a prepreg machine to compound and cure the fabric and film, the temperature of the first pair of hot rollers is set at 150°C±5°C, the temperature of the first hot plate is set at 160±5°C, and the temperature of the second The temperature setting temperature of the second pair of hot rollers is 180±3°C, and the pressure is 1~2MPa. ~2MPa, the vehicle speed is set at 1.5m / min. After winding, a 0.2 mm thick carbon fiber plain ...

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Abstract

The invention discloses a fast preparation method of a high-performance composite material sheet. The preparation method includes the following steps: preparing a rapid-set resin high-precision glue film by using a glue film machine, and carrying out composite curing molding of a reinforcing material and upper-layer and lower-layer resin glue films by a preimpregnation machine; adding a cutting device at the curing traction back end of the composite material sheet, cutting the sheet into the required width, and rolling the sheet. The method has high precision and controllable resin content, and meets the requirements of rapid preparation of the sheet.

Description

technical field [0001] The invention relates to the field of machining, in particular to a rapid preparation method of a high-performance composite material sheet. Background technique [0002] Fiber-reinforced composite materials have been widely used in aerospace, civil engineering and other fields due to their excellent characteristics such as light weight, high strength and corrosion resistance. Composite material sheets, as an important part of composite material profiles, have been widely used in many fields such as bridge reinforcement, building repair, sandwich structure panels, surface decoration and scrapers. [0003] The autoclave forming method is one of the main methods for forming high-performance composite material sheets, but the investment cost of the autoclave is large and the energy consumption is high, which is not conducive to the low-cost development of composite material sheets. At present, the main production process methods of low-cost composite mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/50B29C70/54B29L7/00
CPCB29C70/504B29C70/54B29L2007/002
Inventor 李嘉张宝艳石峰晖杜宇闫鸿琛
Owner AVIC COMPOSITES
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