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Long glass fiber reinforced composite polypropylene material, and preparation method and application thereof

A composite material and polypropylene technology, applied in the field of preparation, long glass fiber reinforced polypropylene composite materials, can solve the problems of high injection molding defect rate, high material cost, low material fluidity, etc., and achieve short injection molding cycle and poor product quality The effect of low rate and excellent low temperature impact performance

Active Publication Date: 2014-02-19
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, due to the long fiber length of the long glass fiber reinforced polypropylene material, the fluidity of the material is low. The rigidity of the domestically produced long glass fiber reinforced polypropylene material can meet the requirements of the door guard, but there is a shortage of material during low-pressure injection molding. The problem of high defective rate of injection molding, while foreign long glass fiber reinforced polypropylene can meet the requirements of rigidity and low pressure injection molding at the same time, but the material cost is relatively high

Method used

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  • Long glass fiber reinforced composite polypropylene material, and preparation method and application thereof
  • Long glass fiber reinforced composite polypropylene material, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Polypropylene 65 parts,

[0042] Continuous glass fiber 30 parts,

[0043] 0.5 parts of coupling agent,

[0044] 0.05 part of main antioxidant,

[0045] Auxiliary antioxidant 0.05 parts,

[0046] 0.5 parts of lubricant,

[0047] 3.9 parts of compatibilizer,

[0048] Among them, the polypropylene is a high melt index block copolymerized polypropylene, the comonomer of the block copolymerized polypropylene is ethylene, the vinyl content is 2~4mol%, the melt flow rate of polypropylene is 110g / 10min, and the test conditions are 230°C, 2.16Kg; the continuous glass fiber is continuous non-alkali glass fiber, the fiber diameter is 17μm, and the linear density is 2400tex;

[0049] The coupling agent is silane coupling agent KH550;

[0050] The main antioxidant is tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, namely antioxidant 1010;

[0051] The auxiliary antioxidant is tris[2.4-di-tert-butylphenyl] phosphite, namely antioxidant...

Embodiment 2

[0064] Polypropylene 55 parts,

[0065] Continuous glass fiber 40 parts,

[0066] 0.5 parts of coupling agent,

[0067] 0.05 part of main antioxidant,

[0068] Auxiliary antioxidant 0.05 parts,

[0069] 0.5 parts of lubricant,

[0070] 3.9 parts of compatibilizer

[0071] Among them, the polypropylene is a high melt index block copolymerized polypropylene, the comonomer of the block copolymerized polypropylene is ethylene, the vinyl content is 2~4mol%, the melt flow rate of polypropylene is 110g / 10min, and the test conditions are 230℃, 2.16Kg;

[0072] The continuous glass fiber is continuous non-alkali glass fiber, the fiber diameter is 17μm, and the linear density is 2400tex;

[0073] The coupling agent is silane coupling agent KH550;

[0074] The main antioxidant is tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, namely antioxidant 1010;

[0075] The auxiliary antioxidant is tris[2.4-di-tert-butylphenyl] phosphite, namely ant...

Embodiment 3

[0083] Polypropylene 75 parts,

[0084] Continuous glass fiber 20 parts,

[0085] 0.5 parts of coupling agent,

[0086] 0.05 part of main antioxidant,

[0087] Auxiliary antioxidant 0.05 part,

[0088] 0.5 parts of lubricant,

[0089] 3.9 parts of compatibilizer,

[0090] Among them, the polypropylene is a high melt index block copolymerized polypropylene, the comonomer of the block copolymerized polypropylene is ethylene, the vinyl content is 2~4mol%, the melt flow rate of polypropylene is 110g / 10min, and the test conditions are 230℃, 2.16Kg;

[0091] The continuous glass fiber is continuous non-alkali glass fiber, the fiber diameter is 17μm, and the linear density is 2400tex;

[0092] The coupling agent is silane coupling agent KH550;

[0093] The main antioxidant is tetrakis[methyl-β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester, namely antioxidant 1010;

[0094] The auxiliary antioxidant is tris[2.4-di-tert-butylphenyl] phosphite, namely ant...

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Abstract

The invention belongs to the technical field of high-molecular materials, and discloses a long glass fiber reinforced composite polypropylene material, and a preparation method and an application thereof The material is prepared by using the following components, by weight, 55-75 parts of polypropylene, 20-40 parts of a continuous glass fiber, 0.1-0.5 parts of a coupling agent, 0.01-0.1 parts of a primary antioxidant, 0.01-0.1 parts of an auxiliary antioxidant, 0.5-1 part of a lubricant and 3.5-4.2 parts of compatilizer. The invention also provides a preparation method of the long glass fiber reinforced composite polypropylene material, and a use of the long glass fiber reinforced composite polypropylene material in automobile components. The long glass fiber reinforced composite polypropylene material can be widely used in automobile components comprising header boards, automobile door panels, inner casings and the like, and has the characteristics of low cost, short injection molding period, low residual stress and small warpage of products, and low fraction defective of the products.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a long glass fiber reinforced polypropylene composite material specially used for low-pressure injection molding of automobile door panels, a preparation method and an application thereof. Background technique [0002] At present, auto parts manufacturers generally use high-pressure injection molding to produce automobile door panels. The low-pressure injection molding process originated in the European automobile industry. , is still in the preliminary stage in our country. This molding processing technology includes: while controlling the injection speed and pressure, injecting a completely plasticized and uniform molten material into the cavity to ensure a complete and smooth melt front or melt front during the entire mold filling process . The above method does not require the external pressure of the molded part, which can save up to 5% of raw materials and reduce ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L53/00C08L51/06C08K13/04C08K7/14C08K5/134C08K5/524C08K5/20B29C70/52B29C70/54
Inventor 杨桂生蒋超杰孙利明
Owner HEFEI GENIUS NEW MATERIALS
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