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Preparation method of special-shaped carbon fiber composite I-beam and special-shaped I-beam prepared through method

A composite material and carbon fiber technology, applied in the field of special-shaped I-beams, can solve the problems of short service life, heavy weight, poor corrosion resistance, etc., and achieve the effect of improving mechanical bearing capacity, compact structure and excellent performance

Inactive Publication Date: 2017-05-31
HENGSHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing I-beams mainly use metal materials, which have disadvantages such as heavy weight, poor corrosion resistance, and short service life.

Method used

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  • Preparation method of special-shaped carbon fiber composite I-beam and special-shaped I-beam prepared through method
  • Preparation method of special-shaped carbon fiber composite I-beam and special-shaped I-beam prepared through method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A method for preparing a finished carbon fiber composite special-shaped I-beam, comprising the following steps:

[0027] Step 1. Preparation of special-shaped I-beam prefabricated body of carbon fiber composite material: first, set the setting agent at 6g / m 2 The quality of the carbon fiber fabric is sprinkled on the carbon fiber fabric and heat-set. After the fabric is set, the fabric is cut into the desired shape with a cutting machine, and then the fabric cut into the specified shape is laid on the pre-prepared mold. After the prefabricated body is laid After layering, put the prefabricated body in a vacuum bag and seal it for storage.

[0028] In the embodiment, the sizing agent should in principle have the same main components as the resin used for the liquid molding of the special-shaped I-beam of the carbon fiber composite material. properties of composite materials.

[0029] Step 1: In preparing the carbon fiber composite special-shaped I-beam prefabricated b...

Embodiment 2

[0040] A method for preparing a finished carbon fiber composite special-shaped I-beam, comprising the following steps:

[0041] Step 1. Prefabrication of special-shaped I-beams made of carbon fiber composite materials: first, sprinkle the sizing agent on the carbon fiber fabric at 3% wt. The fabric cut into the specified shape is spread on the pre-prepared mold, and the prefabrication is placed in a vacuum bag for sealed storage after the prefabrication is completed;

[0042] Step 2. Composite material liquid forming, forming by VARI process: the prefabricated body is placed in the mold, the mold is assembled, and the release cloth and air felt are laid on the top of the mold from the inside to the outside at one time, and sealed with a vacuum bag, and the mold is heated. In the equipment, connect the mold to the vacuum equipment and the injection equipment, heat the mold, and put the thermosetting resin in the injection equipment to heat. The mold heating temperature is set t...

Embodiment 3

[0046] A method for preparing a finished carbon fiber composite special-shaped I-beam, comprising the following steps:

[0047] Step 1. Preparation of special-shaped I-beam prefabricated body of carbon fiber composite material: first, set the setting agent at 8g / m 2 The quality of the carbon fiber fabric is sprinkled on the carbon fiber fabric and heat-set. After the fabric is set, the fabric is cut into the desired shape with a cutting machine, and then the fabric cut into the specified shape is laid on the pre-prepared mold. After the prefabricated body is laid After the layers are completed, put the prefabrication in a vacuum bag and seal it for storage;

[0048] Step 2. Composite material liquid forming, forming by closed mold VARI process: the preform is placed in the mold, and the mold is locked with bolts, the locked mold is placed in the heating equipment, and the mold is connected with the vacuum equipment and the injection equipment , heat the mold, and heat the th...

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Abstract

The invention provides a preparation method of a special-shaped carbon fiber composite I-beam and the special-shaped I-beam prepared through the method. The preparation method of the special-shaped carbon fiber composite I-beam comprises the steps that a setting agent is scattered on carbon fiber fabric according to the mass of 3-8 g / m<2>, heat setting is conducted, the fabric is cut into the required shape through a cutting machine after setting of the carbon fiber fabric is completed, the fabric cut into the specific shape is laid on a mold prepared in advance in an attached mode, so that a prefabricated body is obtained, and the prefabricated body is placed in a vacuum bag to be stored in an airtight mode after laying is completed; composite liquor is formed, so that a crude special-shaped carbon fiber composite I-beam is obtained; and the finished special-shaped carbon fiber composite I-beam is obtained by treating the crude special-shaped carbon fiber composite I-beam. The special-shaped carbon fiber composite I-beam is high in bearing capacity, good in rigidity, low in self weight and high in surface smoothness, the porosity of a product is low, and the outer surface dimension and the resin content can be controlled accurately.

Description

technical field [0001] The invention relates to a method for preparing a special-shaped I-beam made of carbon fiber composite material and the obtained special-shaped I-beam. Background technique [0002] Carbon fiber is a man-made chemical fiber with high carbon content and does not melt during heat treatment. It is made by thermally stable oxidation treatment and graphitization. Carbon fiber has the characteristics of high temperature resistance, friction resistance, electrical conductivity, thermal conductivity and corrosion resistance. The shape has obvious anisotropy and softness, and can be processed into various fabrics. Carbon fiber shows high strength along the fiber axis direction. Carbon fiber has a small specific gravity and high specific strength. [0003] The main purpose of carbon fiber is to compound with resin, metal, ceramics and other substrates to make structural materials. Carbon fiber composites have considerable advantages in the occasions that requir...

Claims

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Application Information

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IPC IPC(8): B29C70/36B29C70/06
CPCB29C70/06B29C70/36
Inventor 曹宇赵宏飞杨现伟王林臣孙永峰
Owner HENGSHEN
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