Thermoplastic composite material, and preparation method and application thereof

A technology of composite materials and thermoplastic compositions, applied in the field of preparation and thermoplastic composite materials, can solve the problems of high porosity, unstable product quality and high defective rate of GMT composite materials, and achieves simple molding method, good impact resistance, The effect of high mobility

Active Publication Date: 2013-11-13
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, GMT composite materials have high porosity, high defective rate, unstable product quality, and the molding process can only form some simple structural parts, which restrict its development

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Unidirectional prepreg tape is used for prepreg. The unidirectional prepreg tape is prepared from the following parts by weight: 95 parts of glass fiber and 10 parts of polypropylene.

[0075] Fix the unidirectional prepreg tape in the mold with a clamp, close the mold, and preheat the mold temperature to 80°C.

[0076] Add the polypropylene composition from the hopper of the injection molding machine. The polypropylene composition is prepared by the following parts by weight: 59.6 parts polypropylene, 15 parts ethylene octene copolymer, 25 parts talc, 0.2 parts antioxidant 1010, and 0.2 parts antioxidant 168.

[0077] During injection molding, the injection pressure is 70Mpa, the injection temperature is 160℃ in the feeding section, 190℃ in the compression section, and 190℃ in the homogenization section. The mold holding pressure is 20Mpa, the holding time is 10s, the mold is opened, and the composite material is prepared.

[0078] The weight parts of the unidirectional prep...

Embodiment 2

[0080] Unidirectional prepreg tape is used for prepreg. The unidirectional prepreg tape is prepared by the following parts by weight: 70 parts glass fiber, 29.4 parts polypropylene, 0.3 parts antioxidant 1010, and 0.3 parts antioxidant 168.

[0081] Place the unidirectional prepreg tape in the mold, close the mold, and preheat the mold temperature to 100°C.

[0082] Add the polypropylene composition from the hopper of the injection molding machine. The polypropylene composition is prepared from the following parts by weight: 69.6 parts polypropylene, 10 parts decabromodiphenyl ether, 5 parts antimony trioxide, 15 parts calcium carbonate, 0.2 parts antioxidant 1010, 0.2 parts Antioxidant 168.

[0083] During injection molding, the injection pressure is 60Mpa, the injection temperature is 160°C in the feeding section, the compression section is 190°C, and the homogenization section is 190°C. The mold holding pressure is 30Mpa, the holding time is 1s, and the mold is opened to prepare...

Embodiment 3

[0086] The prepreg is made of prepreg cloth. The prepreg is prepared by the following parts by weight: 40 parts of polyester fiber, 49.4 parts of polypropylene, 10 parts of talc, 0.3 part of antioxidant 1010, and 0.3 part of antioxidant 168.

[0087] Fix the prepreg cloth in the mold with a clamp, close the mold, and preheat the mold temperature to 60°C.

[0088] Add the polypropylene composition from the hopper of the injection molding machine. The polypropylene composition is prepared from the following parts by weight: 89 parts of polypropylene, 10 parts of ethylene octene copolymer, 0.2 parts of antioxidant 1010, and 0.2 parts of antioxidant 168.

[0089] During injection molding, the injection pressure is 40Mpa, the injection temperature is 160°C in the feeding section, 190°C in the compression section, and 190°C in the homogenization section. Injection molding, mold opening, and preparation of composite materials.

[0090] The weight parts of the prepreg cloth in the prepared ...

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PUM

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Abstract

The invention belongs to the field of polymer composite materials, and discloses a thermoplastic composite material, and a preparation method and an application thereof. The composite material is composed of the components of, by weight: 1-99 parts of a prepreg and 1-99 parts of a thermoplastic composition or thermoplastic resin. The preparation method comprises the steps that: the 1-99 parts of thermoplastic composition or thermoplastic resin is added into a feeding hopper of an injection molding machine, and is mixed with the 1-99 parts of prepreg already in an injection mold; and injection molding is carried out. The invention also discloses an application of the thermoplastic composite material in car bumpers, car door inner panels, car bumper beams, cars toe-boards, car hood, car rear lift door, building templates, biogas digesters, train sidings, train wall panels, or train roof panels. The composite material provided by the invention has the advantages of smooth outer surface, high gloss, good appearance, excellent mechanical performance, high strength, and good impact resistance.

Description

Technical field [0001] The invention belongs to the technical field of polymer composite materials, and relates to a thermoplastic composite material, a preparation method and an application thereof. Background technique [0002] Thermoplastic composite material refers to a composite material made of thermoplastic resin as a matrix and various fibers as reinforcing materials. [0003] Thermoplastic resin refers to a variety of resins that can be repeatedly heated to soften and cool to harden within a certain temperature range. There are many types of thermoplastic resins, generally can be divided into general resins (also called general plastics) such as polypropylene, polyvinyl chloride, polyethylene, polystyrene, etc., engineering resins (also called engineering plastics) such as nylon, polyoxymethylene, polyphenylene ether , Polycarbonate, polyester, etc., special engineering resins (also called special engineering plastics) such as polyether ether ketone, polyphenylene sulfide...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08L25/06C08L27/06C08L77/00C08L77/02C08L77/06C08L67/02C08L69/00C08L59/02C08L71/12C08L55/02C08L33/12C08L61/16C08L81/02C08L51/00C08K13/04C08K7/06C08K7/14C08K7/04C08J5/04B29C45/76
Inventor 杨桂生孙利明李万里
Owner HEFEI GENIUS NEW MATERIALS
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