Carbon fiber/cenosphere/polypropylene ternary composited material and preparation method thereof

The technology of hollow microbeads and composite materials is applied in the field of ternary composite materials and their preparation, which can solve the problems of poor damage resistance, low fracture toughness, long product processing cycle, etc., and achieves wide application prospect, simple preparation method and low cost. reduced effect

Inactive Publication Date: 2012-03-21
CHONGQING UNIV OF TECH
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  • Abstract
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  • Claims
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Problems solved by technology

Due to the shortcomings of thermosetting resin-based composites such as low fracture toughness, poor damage resistance, short service life of prepregs, long product processing cycles, and difficulties in waste recycling, their further development is limited, and people are forced to pay attention to existing thermosetting materials. At the same time, people are also looking for new tough materials as matrix resins

Method used

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  • Carbon fiber/cenosphere/polypropylene ternary composited material and preparation method thereof
  • Carbon fiber/cenosphere/polypropylene ternary composited material and preparation method thereof
  • Carbon fiber/cenosphere/polypropylene ternary composited material and preparation method thereof

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specific Embodiment

[0035] Specific examples: using 100 parts of polypropylene, 5 parts of carbon fiber, and 0, 5, 10, 15 and 20 parts of hollow microspheres to prepare injection samples CF5, GB5, GB10, GB15, and GB20 respectively.

[0036] Generally speaking, with the increase of filler addition, the fluidity of the composite system will drop sharply. However, the increase in the addition of hollow microspheres makes the fluidity of the composite system improved, mainly due to its spherical structure and larger The hardness. Use RM-200A torque rheometer to measure the maximum torque and balance torque of the CF / GB / PP composite when 0-20 parts of hollow microspheres are added. The temperature is 210℃, the speed is 30r / min, and the feeding amount is 40g. , The test results are shown in the table below.

[0037]

[0038]

[0039] It can be seen from the above table that after adding hollow microspheres, the rheological properties of the system are not as described in most documents. When the amount of ...

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Abstract

The invention discloses a carbon fiber / cenosphere / polypropylene ternary composited material and a preparation method thereof. The proportion by weight of carbon fibers, cenospheres and polypropylene includes: 100 parts of polypropylene, 2 to 30 parts of carbon fibers and cenospheres which are larger than 0 part but smaller than 30 parts. Thermoplastic polypropylene resin is used as a base material and is modified by blending with the carbon fiber and the cenospheres, and accordingly, a carbon fiber / cenosphere / polypropylene blending system which is reinforced and toughened is formed on the condition of adding few carbon fibers. Since third-phase cenospheres are introduced into a carbon fiber / polypropylene composite system, the carbon fibers but the cenospheres are used as main carriers so that toughness of the composite system is improved. Besides, affection on mechanical performance of the system is more evident and cost is reduced evidently on the premise of identical additive amount as compared with those of a system added with PP-g-MAH.

Description

technical field [0001] The invention relates to a ternary composite material and a preparation method thereof, in particular to a carbon fiber / hollow microsphere / polypropylene ternary composite material and a preparation method thereof. [0002] Background technique [0003] Carbon fiber (CF) is a general term for a class of non-graphite fibers with a carbon content of more than 92%. As an ideal reinforcement for light weight and high strength, it is often used in composite systems based on resins, metals, ceramics, and cement. Hollow microspheres (GB) are a kind of loose and fluid powder material, which has the characteristics of sound insulation, flame retardancy, good electrical insulation, low density, low oil absorption, and high strength. Due to its excellent fluidity , often used in filling modification to improve flow performance, control floating fiber exposure, improve surface finish, etc. Hollow microspheres can be artificially prepared or separated from fly as...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08K13/06C08K9/06C08K7/22C08K7/06
Inventor 黄虹李又兵王选伦陈元芳徐梁李能文李道喜明浩
Owner CHONGQING UNIV OF TECH
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