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Carbon fiber reinforced polypropylene composite material and preparation method thereof

A composite material and polypropylene technology, applied in the field of carbon fiber reinforced polypropylene composite materials, can solve problems such as feeding difficulties, and achieve the effects of improving compatibility, increasing the degree of chlorination, and increasing the amount of fluorine gas

Active Publication Date: 2020-03-17
WANHUA CHEMICAL (NINGBO) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composite material has improved compatibility between polypropylene and graphene or carbon fiber, effectively avoiding the problems of carbon fiber fuzzing and bridging leading to difficult feeding

Method used

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  • Carbon fiber reinforced polypropylene composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] (1) After the carbon fiber is heated and vacuumized to remove moisture, it is placed in a 10kpa fluorine / chlorine / hydrogen fluoride mixed gas atmosphere and heated to 80°C for activation treatment. The fluorine gas concentration is 1.0vol%, and the hydrogen fluoride concentration is 0.1vol%. , the concentration of chlorine gas was 98.9vol%, and the reaction time was 0.3h to obtain chlorinated modified carbon fibers (wherein the chlorine content was 7.0wt%, and the fluorine content was 0.2wt%).

[0059] (2) Put the chlorinated modified carbon fiber in step (1) into xylene solvent (solution concentration 2.0wt%), add xylene solution (10wt%) containing chlorinated polypropylene, and carry out ultrasonic dispersion for 1h, wherein chlorine The weight ratio of chlorinated polypropylene to chlorinated modified carbon fiber is 1:1, and then washed and dried to obtain chlorinated polypropylene-coated chlorinated modified carbon fiber, and then at 180 ° C under vacuum conditions ...

Embodiment 2

[0065] (1) After the carbon fiber is heated and vacuumed to remove moisture, it is placed in a 30KPa fluorine / chlorine / hydrogen fluoride mixed gas atmosphere and heated to 100°C for activation treatment, wherein the fluorine gas concentration is 3.0vol%, and the hydrogen fluoride concentration is 0.3vol %, the concentration of chlorine gas is 96.7vol%, and the reaction time is 0.5h to obtain chlorinated modified carbon fibers (wherein the chlorine content is 14.2wt%, and the fluorine content is 0.4wt%).

[0066] (2) Put the chlorinated modified carbon fiber in step (1) into xylene solvent (solution concentration 2.0wt%), add xylene solution (10wt%) containing chlorinated polypropylene, and carry out ultrasonic dispersion for 1h, wherein chlorine The weight ratio of chlorinated polypropylene to chlorinated modified carbon fiber is 2:1, followed by washing and drying to obtain chlorinated polypropylene-coated chlorinated modified carbon fiber, and then at 200 ° C under vacuum con...

Embodiment 3

[0072] (1) After the carbon fiber is heated and vacuumed to remove moisture, it is placed in a 50KPa fluorine / chlorine / hydrogen fluoride mixed gas atmosphere and heated to 120°C for activation treatment, wherein the concentration of fluorine gas is 5.0vol%, and the concentration of hydrogen fluoride is 0.5vol%. , the concentration of chlorine gas was 94.5vol%, and the reaction time was 1.0h to obtain chlorinated modified carbon fibers (wherein the chlorine content was 18wt%, and the fluorine content was 1.1wt%).

[0073] (2) Put the chlorinated modified carbon fiber in step (1) into xylene solvent (solution concentration 2.0wt%), add xylene solution (10wt%) containing chlorinated polypropylene, and carry out ultrasonic dispersion for 1h, wherein chlorine The weight ratio of chlorinated polypropylene to chlorinated modified carbon fiber is 3:1, followed by washing and drying to obtain chlorinated modified carbon fiber coated with chlorinated polypropylene, and then at 220°C unde...

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Abstract

The invention discloses a carbon fiber reinforced polypropylene composite material and a preparation method thereof. The composite material is composed of the following components in parts by weight:50 to 90 parts of polypropylene, 10 to 50 parts of modified carbon fiber master batches, 0.2 to 0.8 part of polypropylene grafted modified graphene, 0.3 to 0.7 part of an antioxidant, 0.2 to 0.6 partof a lubricant and 0.1 to 0.4 part of hydrotalcite. Grafting modification is carried out on graphene and the carbon fibers by polypropylene, so that the compatibility of the polypropylene with the graphene and the carbon fibers is effectively improved; the polypropylene grafted modified carbon fibers and polypropylene fibers are further subjected to mixed spinning to obtain fiber mixed tows, the fiber mixed tows are heated until the polypropylene fibers are molten to obtain polypropylene resin bonded carbon fibers, the polypropylene resin bonded carbon fibers are sized-diced to obtain modifiedcarbon fiber master batches, and the problem that feeding is difficult due to fluffing and bridging of the carbon fibers is effectively solved.

Description

technical field [0001] The invention belongs to the field of materials, specifically relates to the technical field of polypropylene composite materials, and more specifically relates to carbon fiber reinforced polypropylene composite materials. Background technique [0002] Polypropylene plastic is a kind of thermoplastic resin made by polymerizing propylene. It has rich sources of raw materials, good chemical resistance, easy molding and processing, cheap price, and can be recycled many times. The most important thing is that it can be modified by blending, strengthening, filling, etc., so as to realize the general plastic engineering and high performance of polypropylene materials, and meet its application in household appliances, automotive interior and exterior parts, fitness, office supplies and The needs of application fields such as sanitary ware. [0003] Glass fiber reinforced polypropylene material has the advantages of high mechanical strength, good heat resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/10C08K3/04C08K9/08C08K7/06C08K9/02C08J5/06
CPCC08J5/042C08J5/06C08J2323/12C08K13/06C08K9/10C08K3/042C08K9/08C08K7/06C08K9/02
Inventor 李保印杨峰张文勇吴志超纪少思陆佳伟
Owner WANHUA CHEMICAL (NINGBO) CO LTD
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