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Carbon fiber product forming technology

A molding process, carbon fiber technology, applied in the field of carbon fiber product molding technology, can solve the problems of air leakage product strength, appearance defects, scrapping, etc., achieve the effect of reducing weight and cost, and solving defects and scrapping

Inactive Publication Date: 2018-02-16
涂平华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there will be air leakage during the filling process, which will lead to low product strength and scrap
2. The whole branch uses direct external pressure of fibers, or uses a core material containing polyurethane (polymethacrylimide) as a carbon fiber external pressure product. Take polyurethane A (black material) / B (white material) material) according to the ratio of 1:1, mix evenly and pour it into the designed mold (or directly take the polyurethane material that has been sent out to cut the product size) to get the core material, and directly wrap the fiber material according to the order of product structure design Get a semi-finished product on the core material, put it into the forming mold and send it to the forming table for heating and pressing for 30 minutes, and the rough embryo of the product can be obtained after demoulding, but it will cause defects in the appearance of the product, and in serious cases, the product will be damaged.

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
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Add 150g of acrylic microsphere particles to 175g of epoxy resin and 175g of methyl acetate, and stir together to obtain a foaming material; process the foaming material with a brush or a spray gun and impregnate the carbon fiber external pressure product containing polyurethane or On the inner core material of polymethacrylimide; after the methyl acetate in the epoxy resin volatilizes, wrap the fiber material on the above inner core material according to the structure of the product, and the fiber material is UD unidirectional cloth or Woven fiber cloth 1K, put the wrapped fiber material into the molding mold, pressurize at 150°C to let the foam material on the inner core material expand for 30 minutes, and get a rough embryo of a one-time molding product, where the expansion time depends on the fiber The epoxy resin of the material cloth is fixed.

Embodiment 2

[0015] Add 100g of acrylic microsphere particles to 200g of epoxy resin and 200g of methyl acetate, and stir them together to get a foaming material; process it on the non-woven fabric of the carbon fiber internal pressure product with a brush or spray gun and impregnation, and some products need to use Polystyrene foam or polyethylene foam auxiliary substrate, after methyl acetate volatilizes, cut the above non-woven fabric according to the size of the product, then wrap the cut non-woven fabric with fiber material, and then follow the product design sequence Wrap up the fiber material, the fiber material is UD unidirectional cloth or woven fiber cloth 1K, put the wrapped fiber material into the molding mold, pressurize at 150°C to let the foaming material on the non-woven fabric expand for 40 minutes, and get a The rough embryo of the molded product, where the expansion time depends on the epoxy resin of the fiber material cloth.

Embodiment 3

[0017] Add 125g of acrylic microsphere particles to 200g of epoxy resin and 175g of methyl acetate, and stir together to obtain a foamed material; use a brush or a spray gun and impregnate the foamed material to process the carbon fiber external pressure product containing polyurethane or On the inner core material of polymethacrylimide; after the methyl acetate in the epoxy resin volatilizes, wrap the fiber material on the above inner core material according to the structure of the product, and the fiber material is UD unidirectional cloth or Woven fiber cloth 1.5K, put the wrapped fiber material into the molding mold, pressurize at 150°C to let the foam material on the inner core material expand for 35 minutes, and get a rough embryo of a one-time molding product, and the expansion time depends on The epoxy resin of the fiber material cloth is fixed.

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PUM

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Abstract

The invention discloses a carbon fiber product forming technology. The technology comprises the following steps that 1, foaming materials are prepared; 2, a brush or a spray gun or a soaking method isadopted for processing foaming materials on an inner core material of a carbon fiber outer pressure product; and 3, after methyl acetate is completely volatilized, the inner core material is wound byfiber materials according to the structure of the prepared product and then placed into a forming die to be expanded, and a rough blank of a product formed at a time is obtained. The foaming materials are placed in the middle of the fiber of the carbon filter inner pressure product, and therefore the weight and cost of the product can be reduced, the surface appearance of relevant products is ensured. Or the foaming materials are placed into the surface of the inner core materials of the carbon fiber outer pressure product, the defects and scrap on the appearance of the product can be overcome.

Description

technical field [0001] The invention relates to a carbon fiber product, in particular to a molding process of the carbon fiber product. Background technique [0002] At present, the molding process of carbon fiber products through high temperature and high pressure includes: 1. The carbon fiber internal pressure products that are blown into nylon tubes are used to make wood or bamboo and iron rods for rolling materials according to the needs of the product size and inner diameter, and then Put the nylon air duct in the long strip made of anti-wrapped fiber cloth. The two ends of the nylon air duct should grow out of the fiber length of the structural design. The semi-finished product is preformed by the preform mold and wrapped on one end of the nylon tube. Air nozzle for air intake during molding, put the preformed semi-finished product into the forming mold and send it to the forming table with temperature for pressurization, and finally insert the air intake pipe on the f...

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
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C44/12B29C44/60B29C69/00B29K33/04B29K63/00
CPCB29C44/1209B29C44/60B29C69/001B29K2033/08B29K2063/00
Inventor 涂平华
Owner 涂平华