Carbon-fiber-reinforced polyester composite material and preparation method thereof

A polyester composite material and carbon fiber technology, applied in the field of polymers, can solve the problems of low utilization rate, achieve the effects of improving surface polarity, enhancing cohesion, and simple production process

Inactive Publication Date: 2012-01-11
SHENZHEN KEJU NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The silane coupling agent is easy to self-condense into siloxane oligomers during use, the actual utilization rate is low, and the part that is effectively chemically bonded to the surface of the glass fiber is also very easy to hydrolyze

Method used

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  • Carbon-fiber-reinforced polyester composite material and preparation method thereof

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preparation example Construction

[0025] The invention provides a carbon fiber-reinforced polyester composite material and a preparation method thereof. In the invention, the carbon fiber is subjected to surface treatment, which specifically includes: wherein the carbon fiber surface treatment agent is prepared from the following components according to mass percentage: solvent 0-99% ; Polyacrylonitrile 1-100%.

[0026] The solvent is a polar solvent, including one or more of water, ethanol, methanol, and acetone. The carbon fibers are polyacrylonitrile-based carbon fibers. The polyacrylonitrile is a liquid polyacrylonitrile oligomer with a molecular weight range of 106-10000 Daltons.

[0027] Carbon fiber surface treatment method, the specific steps include:

[0028] Step 1: mix polyacrylonitrile and solvent according to mass percentage and stir evenly;

[0029] Step 2: soaking the carbon fiber in the solvent of step 1;

[0030] Step 3: Pre-oxidize the impregnated carbon fibers in an oven at 50-300 degree...

Embodiment 1

[0033] The preparation method of composite material is as follows: polyethylene terephthalate (PET) mass ratio is: 69.6%; Lubricant (zinc stearate) mass ratio is: 0.2%; Antioxidant (phenolic antioxidant The mass ratio of tetrakis[β-(3′,5′-di-tert-butyl-4′-hydroxyphenyl)propionate]pentaerythritol ester) is 0.2%. Mix for 4 minutes in a high-speed mixer;

[0034] The uniformly mixed components are placed in a twin-screw extruder, melted, mixed, extruded and granulated, and 30% of the carbon fiber is fed into the extruder by side feeding;

[0035] The processing temperature is zone 1 temperature: 210-220℃, zone 2 temperature: 225-230℃, zone 3 temperature: 235-250℃, zone 4 temperature: 240-260℃, zone 5 temperature: 230-250℃, zone 6 Zone temperature: 220-245°C, zone seven temperature: 240-250°C, host speed: 300-350rpm.

[0036] The particles completed by the above method are dried in a blast oven at 100-130°C for 4 hours in advance, and then the dried particle materials are inject...

Embodiment 2

[0038] The preparation method of composite material is as follows: polyethylene terephthalate (PET) mass ratio is: 59.6%; Lubricant (zinc stearate) mass ratio is: 0.1%; Antioxidant (phenolic antioxidant The mass ratio of tetrakis[β-(3′,5′-di-tert-butyl-4′-hydroxyphenyl)propionate]pentaerythritol ester) is 0.3%. Mix for 4 minutes in a high-speed mixer;

[0039] The uniformly mixed components are placed in a twin-screw extruder, melted, mixed, extruded and granulated, and 40% of the carbon fiber is fed into the extruder by side feeding;

[0040] The processing temperature is zone 1 temperature: 210-220℃, zone 2 temperature: 225-230℃, zone 3 temperature: 235-250℃, zone 4 temperature: 240-260℃, zone 5 temperature: 230-250℃, zone 6 Zone temperature: 220-245°C, zone seven temperature: 240-250°C, host speed: 300-350rpm.

[0041] The particles completed by the above method are dried in a blast oven at 100-130°C for 4 hours in advance, and then the dried particle materials are inject...

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Abstract

The invention discloses a carbon-fiber-reinforced polyester composite material and a preparation method thereof. The composite material comprises the following components by weight percent (%): 60-80% of polyester, 0.1-0.3% of lubricating agent, 0.1-0.3% of antioxidant and 20-40% of carbon fiber. In the invention, surface treatment is carried out on the carbon fiber by virtue of liquid polyacrylonitrile so that the bonding performance between the carbon fiber and a polar polyester resin matrix is improved and mechanical properties of a material are enhanced. The invention has the advantages that: the surface polarity of the carbon fiber is improved; the bonding force between the carbon fiber and the resin matrix is improved; and the obtained carbon-fiber-reinforced polyester material has high strength, high toughness and simple production process and can be widely applied to a high-performance structural material for automobiles, military appliance and aviation.

Description

technical field [0001] The invention relates to the technical field of polymers, in particular to a carbon fiber reinforced polyester composite material and a preparation method thereof. Background technique [0002] Polyester is a general term for polymers obtained by polycondensation of polyols and polybasic acids. It mainly refers to linear thermoplastic resins such as polyethylene terephthalate (PET) and polybutylene terephthalate (PBT). With high melting point, high toughness, excellent heat resistance and electrical resistance, it is a class of engineering plastics with excellent performance and wide application. [0003] Carbon fiber has the characteristics of high strength, low density, high temperature resistance, water resistance and corrosion resistance, and is an excellent high-strength reinforcing material. The polymer resin reinforced with carbon fiber is a very important high-performance structural material for military equipment and aviation. Most of the r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L67/02C08K13/06C08K9/04C08K7/06D06M15/31B29B9/06B29C47/92B29C45/78D06M101/40B29C48/92
Inventor 徐东徐永杨海灵
Owner SHENZHEN KEJU NEW MATERIAL
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