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A carbon fiber composite automobile anti-collision beam and its hsm forming process

A molding process, carbon fiber technology, applied in the field of carbon fiber composite automobile anti-collision beams and its HSM molding process, can solve the problems of inaccurate control of dimensional accuracy, inconsistent interlayer bonding, uncontrollable quality of thick products, etc., to achieve product appearance The effects of fullness, improved interlayer bonding, and improved bending strength

Active Publication Date: 2019-09-10
厦门市中豪强碳纤复合材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 1. Sheet-like high-energy glue is only suitable for preparing products with 2D effects when preforming carbon cloth; 2. The dimensional accuracy of preformed products is not accurately controlled, and the defect rate is high; 3. The thickness of the product exceeds 1cm, carbon cloth The difference between the size of the preform and the size after molding is large, which will cause the fibers to be pulled by the expansion force during the expansion molding process, resulting in stress concentration, and the interlayer bonding force inside the product is inconsistent, especially the quality of complex and thick products is uncontrollable

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] In the first step, put the heat self-expanding high-energy adhesive HR-313, which can be molded and preformed, into the core material mold of the product and tighten the mold, heat at 90°C for 15 minutes, and micro-expand. The volume ratio before and after micro-expansion is 1.1, filling the mold cavity , cooled to obtain the prefabricated core material of the automobile anti-collision beam;

[0039] The second step is to wrap carbon fiber prepreg cloth on the outside of the prefabricated core material of the automobile anti-collision beam to obtain the prefabricated body of the automobile anti-collision beam. ℃, 30 minutes; at this time, the internal thermal self-expanding high-energy adhesive will generate an expansion force from the inside to the outside after being heated, and at the same time the carbon fiber prepreg is solidified and formed, cooled and demolded to obtain the automobile anti-collision beam. The overall density is 0.58g / cm 3 , Compared with traditi...

Embodiment 2

[0042] In the first step, put the heat self-expanding high-energy adhesive HR-330, which can be molded and preformed, into the core material mold of the product and tighten the mold, heat at 90°C for 20 minutes, and expand slightly. The volume ratio before and after the expansion is 1.3, filling the mold cavity , cooled to obtain the prefabricated core material of the automobile anti-collision beam;

[0043]The second step is to wrap carbon fiber prepreg cloth on the outside of the prefabricated core material of the automobile anti-collision beam to obtain the prefabricated body of the automobile anti-collision beam. ℃, 60 minutes; at this time, the internal thermal self-expanding high-energy adhesive will generate an expansion force from the inside to the outside after being heated, and at the same time the carbon fiber prepreg is solidified and formed, cooled and demoulded to obtain the automobile anti-collision beam. The overall density is 0.64g / cm 3 , Compared with tradit...

Embodiment 3

[0046] In the first step, put the heat self-expanding high-energy adhesive HR-330, which can be molded and preformed, into the core material mold of the product and tighten the mold, heat at 100°C for 3 minutes, and micro-expand. The volume ratio before and after micro-expansion is 1.5, filling the mold cavity , cooled to obtain the prefabricated core material of the automobile anti-collision beam;

[0047] The second step is to wrap carbon fiber prepreg cloth on the outside of the prefabricated core material of the automobile anti-collision beam to obtain the prefabricated body of the automobile anti-collision beam. ℃, 10 minutes; at this time, the internal thermal self-expanding high-energy adhesive will generate an expansion force from the inside to the outside after being heated, and at the same time the carbon fiber prepreg is solidified and formed, cooled and demolded to obtain the automobile anti-collision beam. The overall density is 0.51g / cm 3 , Compared with traditi...

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Abstract

The invention relates to an automotive anti-collision beam made of a carbon fiber composite material and an HSM (heat self molding) process of the automotive anti-collision beam. According to the process, shapable pre-molded heat self-expansion high-energy glue is placed into a product core material mold and heated to be slightly expanded, an obtained core material is coated with carbon fiber prepreg, a composite material preform is obtained and placed into a mold, the mold is closed tightly, the composite material preform is heated for second time for curing forming, then cooling, demolding and part taking are performed, and the automotive anti-collision beam made of the carbon fiber composite material is obtained. By means of the HSM process of the automotive anti-collision beam made ofthe carbon fiber composite material, carbon fibers and the high-energy glue are combined, product making is finished through two times of molding by aid of heat self-expansion of the high-energy glue,the process is concise, the product is full in appearance, the density range of the product is 0.3-1.1 g / cm<3>, the weight reducing ratio can reach 40%-50% as compared with that of the traditional steel structure, the product is high in strength, damage of collision to the carbon fiber composite material can be reduced effectively, and maintenance cost is reduced.

Description

technical field [0001] The invention relates to the field of forming an automobile anti-collision beam, in particular to a carbon fiber composite automobile anti-collision beam and an HSM forming process thereof. Background technique [0002] Automobile anti-collision beams, also known as bumpers, are installed at the front and rear ends of automobiles. They not only have decorative functions, but more importantly, they are safety devices that absorb and ease external impacts and protect the safety of the body and passengers. From a safety point of view, automobile anti-collision beams must have a certain strength, and the steel bumpers existing on the market are the types of products that exist based on strength requirements. However, with the development of the automobile industry, its requirements for lightweight are getting higher and higher. The heavier the car, the higher the fuel consumption; for new energy vehicles, the lighter the body, the stronger the battery life...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C70/44B29B11/06B29C44/02B29C44/60B29B15/10B29K101/10B29L31/30
Inventor 蔡锦云谢容泉李步龙
Owner 厦门市中豪强碳纤复合材料有限公司