A kind of long glass fiber reinforced polypropylene composite material, preparation method and application thereof

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

Active Publication Date: 2018-07-13
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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  • A kind of long glass fiber reinforced polypropylene composite material, preparation method and application thereof
  • A kind of long glass fiber reinforced polypropylene composite material, preparation method and application thereof
  • A kind of long glass fiber reinforced polypropylene composite material, 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 part,

[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 part,

[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 anti...

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 polymer materials, and discloses a long glass fiber reinforced polypropylene composite material, a preparation method and an application thereof. The material is made of the following components by weight: 55-75 parts of polypropylene, 20-40 parts of continuous glass fiber, 0.1-0.5 parts of coupling agent, 0.01-0.1 part of primary antioxidant, 0.01 part of auxiliary antioxidant ~0.1 part, lubricant 0.5~1 part, compatibilizer 3.5~4.2 parts. The present invention also provides a preparation method of the long glass fiber reinforced polypropylene composite material and the use of the above long glass fiber reinforced polypropylene composite material as auto parts. The long glass fiber reinforced polypropylene composite material provided by the invention is widely used in auto parts such as automobile dashboards, door panels, inner guard panels, etc., and has the advantages of low cost, short injection molding cycle, low residual stress of parts, small warping deformation, The product defect rate is low and so on.

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 Patents(China)
IPC IPC(8): C08K7/14
Inventor 杨桂生蒋超杰孙利明
Owner HEFEI GENIUS NEW MATERIALS
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