Preparation method of rare earth modified carbon fiber/ polypropylene composite material

A composite material and rare earth modification technology, which is applied in the field of preparation of rare earth modified carbon fiber/polypropylene composite material, can solve the problems of weak interfacial bonding force, difficulty in forming effective bonding between reinforcement and matrix resin, poor compatibility, etc. To achieve the effect of low cost, good mechanical properties and tribological properties, and improved mechanical properties and tribological properties

Inactive Publication Date: 2006-07-26
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polypropylene is a non-polar polyolefin, so the compatibility between polypropylene and carbon fiber is very poor, and the interfacial bonding force is very weak. It

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The raw materials used include: polypropylene powder, PP-K8303, Beijing Yanshan Petrochemical Company. Carbon fiber: Shanghai Xinka Carbon Co., Ltd. The component weight percent of the rare earth modifier used is: 0.1% of rare earth compound, 99.7% of ethanol, 0.05% of ethylenediaminetetraacetic acid, 0.1% of ammonium chloride, 0.02% of nitric acid and 0.03% of urea.

[0019] The weight percentages of each component of the raw material are as follows:

[0020] Polypropylene: 89%

[0021] Carbon fiber: 10%

[0022] Molybdenum disulfide: 1%

[0023] The carbon fiber is soaked in the rare earth modifier at room temperature for 2 hours, filtered and dried.

[0024] Then mix polypropylene, carbon fiber and molybdenum disulfide according to the above ratio, and carry out mechanical strong stirring. After stirring evenly, put the mixed powder into the mold of a flat vulcanizer for molding. First, raise the temperature of the furnace to about 110°C and keep it for 60 minute...

Embodiment 2

[0027] The raw materials used include: polypropylene powder: PP-K8303 resin powder produced by Beijing Yanshan Petrochemical Company. Carbon fiber: produced by Shanghai Xinka Carbon Co., Ltd. The components by weight of the rare earth modifier are as follows: 1.5% of rare earth compounds, 96% of ethanol, 0.2% of ethylenediaminetetraacetic acid, 0.8% of ammonium chloride, 0.5% of nitric acid and 1% of urea.

[0028] The weight percentages of each component of the raw material are as follows:

[0029] Polypropylene: 79%

[0030] Carbon Fiber: 11%

[0031] Molybdenum disulfide: 10%

[0032] Soak the carbon fiber in the rare earth modifier for 4 hours at room temperature, filter and dry.

[0033] Then mix polypropylene, carbon fiber, and molybdenum disulfide according to the above ratio, and carry out strong mechanical stirring. After stirring evenly, put the mixed powder into the mold of a flat vulcanizer for molding. First, raise the temperature of the furnace to about 110°C...

Embodiment 3

[0036] The raw material ratio that adopts is the same as embodiment 1, only changes the proportioning of rare earth modifier: the component weight percent of the rare earth modifier that adopts is: rare earth compound 2%, ethanol 95%, ethylenediaminetetraacetic acid 0.5%, Ammonium chloride 1%, nitric acid 0.5%, urea 1%.

[0037] The carbon fiber is soaked in the rare earth modifier at room temperature for 3 hours, filtered and dried.

[0038] Then mix polypropylene, carbon fiber, and molybdenum disulfide according to the above ratio, and carry out strong mechanical stirring. After stirring evenly, put the mixed powder into the mold of a flat vulcanizer for molding. First, raise the temperature of the furnace to about 110°C and keep it for 60 minutes. Pre-molding the preformed blank, at this time, the pressure is controlled at about 14MPa, and then the temperature is raised to about 190°C at a rate of 60°C / hour, and the temperature is kept for 1 hour to make the molding materia...

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Abstract

This invention is related to the method for making a rare-earth modification carbon fibre/polypropylene composite material. Firstly we use rare-earth modifier to do surface-modifying treatment to carbon fibre, then we compound the treated rare-earth modifier and polypropylene, add some molybdenum disulfide, blend mechanically, control the mass percent of carbon fibre to 10-20% of mixed powder, then we fill the mixed powder into non-corrodible steel mold to extrusion forming, sinter under high-temperature to produce rare-earth modification carbon fibre/polypropylene composite material. The components of rare-earth modifier contain rare earth compounds, ethanol, dimethylenedinitrilotetraacetic acid, ammonium chloride, nitric acid and carbamide. The process of this method is simple, low cost, no pollution to environment, the produced composite material has good mechanics and frictional behaviour.

Description

technical field [0001] The invention relates to a method for preparing a composite material, in particular to a method for preparing a rare-earth modified carbon fiber / polypropylene composite material. The polypropylene composite material is filled with carbon fiber treated with rare earth surface to obtain relatively high interfacial bonding force. Improve the hardness of the polypropylene resin matrix, thereby improving the mechanical properties and wear resistance of the composite material. Background technique [0002] Polypropylene (PP) is a thermoplastic synthetic resin with excellent performance. It has the advantages of small specific gravity, non-toxicity, easy processing, impact strength, anti-disturbance and good electrical insulation. It is the best heat resistance among general-purpose resins. The products are widely used in the automobile industry, household appliances, electronics, packaging and building materials, furniture and so on. However, polypropylene ...

Claims

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Application Information

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IPC IPC(8): C08L23/10C08J5/06C08K7/06
Inventor 程先华李健梁木子蒋喆
Owner SHANGHAI JIAO TONG UNIV
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