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Carbon fiber reinforced composite material and preparation technology thereof

A technology for reinforced composite materials and a preparation process, which is applied in the field of carbon fiber reinforced composite materials and their manufacturing processes, can solve the problems affecting the performance of carbon fiber composite materials, restricting the promotion and application of materials, and poor quality of composite materials, and achieves maintaining strength and light weight. , good durability and flexibility

Inactive Publication Date: 2012-06-13
DANYANG DANJIN AVIATION MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned technologies all have complex processes, high cost, and poor quality of the prepared composite materials.
Seriously affect the performance of carbon fiber composite materials, restricting the promotion and application of this material

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1) Pretreatment of carbon fiber:

[0024] Composite pretreatment solution is prepared. The composite pretreatment solution is calculated by weight percentage and consists of the following components: 50% nitric acid, 40% sodium nitrate, and 10% hydrogen peroxide. Pretreatment solution: Soak the mixed fiber carbon fiber braid to be treated in the prepared composite pretreatment solution, and treat it for 40 minutes at a reaction temperature of 60°C, then take it out and wash it fully with sodium hydroxide solution and water. Until the pH value is not acidic, it is dried at 90°C.

[0025] (2) Compression molding

[0026] The molding method is adopted, the mold is divided into upper and lower molds, and the heating jacket is wrapped outside to realize heating. The temperature is controlled by a thermocouple, and the temperature rise rate is adjusted by a transformer. The dimension of the inner cavity of the mold is 1200×800×30mm. Put it into the pre-cleaned molding mold...

Embodiment 2

[0031] (1) Pretreatment of carbon fiber:

[0032] Prepare composite pretreatment solution, composite pretreatment solution is by weight percentage, is made up of following components: 60% nitric acid, 10% acidic potassium dichromate, 15% sodium nitrate, 15% hydrogen peroxide after preparing according to proportion, Add water to prepare a composite pretreatment solution with a concentration of 60%. Soak the multiaxial warp-knitted carbon fiber braid to be treated in the prepared composite pretreatment solution, and treat it for 35 minutes at a reaction temperature of 55°C. , take it out and wash it thoroughly with sodium hydroxide solution and water until the pH value is not acidic, and then dry it at 80°C.

[0033] (2) Compression molding

[0034] The compression molding method is adopted, the mold is divided into upper and lower molds, and the heating jacket is wrapped outside to realize heating. The temperature is controlled by a thermocouple, and the temperature rise rate ...

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Abstract

The invention provides a carbon fiber reinforced composite material and a preparation technology thereof. Carbon fiber braided fabric is pretreated in a composite pretreatment solution with the concentration of 50 to 60 percent, wherein the composite pretreatment solution comprises 5 to 20 percent of oxydol and one or more of the following components: 50 to 70 percent of nitric acid, 30 to 50 percent sodium nitrate, ferric chloride, potassium permanganate, and acidic potassium dichromate; the carbon fiber braided fabric is pre-tightened in a adjustable and controllable stretching mechanism byadopting a compression moulding forming method, and then is fixed on a mould through a positioning device and coated with thermosetting resin powder with a required thickness; according to the performance indexes of the carbon fiber reinforced composite material to be manufactured, the carbon fiber braided fabric and the thermosetting resin powder with the required thickness are laid in a matrix position in the mould lay by lay until to designed layer number and thickness are achieved; and then heating and compression molding are carried. Through the surface treatment to the carbon fiber withthe specially prepared composite solution, the compatibility of carbon fiber and thermoset material is greatly improved, and the adhesion property of the carbon fiber and matrix resin is improved. Through the adoption of compression moulding forming, the forming technology is simple, the production is flexible, the production cycle is short, the equipment investment is small, and the cost is low.

Description

technical field [0001] The invention belongs to the technical field of carbon fiber composite materials, and relates to a fiber reinforced composite material and a manufacturing method thereof, in particular to a carbon fiber reinforced composite material and a manufacturing process thereof. Background technique [0002] Composite material is a new type of engineering material. All major industrialized countries and regions in the world are investing a lot of money in the basic and applied research of composite materials. The composite technology of composite materials has enabled the composite and mutual modification of polymer materials, metal materials, ceramic materials, glass, carbonaceous materials, etc., so that the production and application of materials have been comprehensively developed. As a structural composite material, fiber-reinforced composite materials have the advantages of high strength, light weight, corrosion resistance, heat insulation and sound absorp...

Claims

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Application Information

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IPC IPC(8): C08L77/00C08L69/00C08L59/02C08L71/00C08L81/02C08L71/10C08L61/16C08L67/00C08L23/12C08L23/06C08K9/02C08K7/06B29C70/46
Inventor 李仁府丁刚丁家伟徐祝方耿德英孙健李顶根商林方
Owner DANYANG DANJIN AVIATION MATERIAL TECH
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