Continuous fiber reinforced polypropylene material and preparation method thereof

A polypropylene material and continuous fiber technology, which is applied in the field of continuous fiber reinforced polypropylene material and its preparation, can solve the problems of unstable weight of parts, affecting the performance of parts, and difficult acceptance by customers, etc., and achieve easy control of glass fiber content , Improve online production capacity and high production capacity

Active Publication Date: 2012-05-30
HEFEI GENIUS NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The defect of this method is that when the prepared material is used for injection molding, the blanking is uneven due to the large difference in the density and particle shape of the two batch mixed materials, so that the weight of the injection molded part is unstable, and at the same time affects It is difficult for customers to accept the performance of the parts

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Continuous fiber reinforced polypropylene masterbatch (glass fiber content 40%) 50 parts

[0044] Fixed-length polypropylene pellets (7mm) 50 parts

[0045] The continuous fiber reinforced polypropylene masterbatch is prepared by the following method, which comprises the following steps:

[0046] (1) Mixing preparation; 60 parts of polypropylene with a melt index of 25-65g / 10min (230°C, 2.16Kg), 0.5 part of silane coupling agent, and 0.6 part of antioxidant, the antioxidant is made of four (β -(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) pentaerythritol ester and tris(2,4-tert-butylphenyl) phosphite are mixed according to the weight of 1:2, 0.5 parts of ethyl Ethylene bis stearamide (EBS), 2 parts of maleic anhydride grafted polypropylene with a grafting rate of 1.0%, are sequentially added to the high mixer, the mixing temperature is controlled at 40-60°C, and the mixing time is 3-5 Stop after 10 minutes, then add the mixed material into the hopper of the extruder...

Embodiment 2

[0059] Continuous fiber reinforced polypropylene masterbatch (glass fiber content 40%) 50 parts

[0060] Polypropylene raw material 50 parts

[0061] Continuous fiber reinforced polypropylene masterbatch, pellet length 11-13mm, particle size 2.5-3.5mm, including the following components and parts by weight:

[0062] Polypropylene 60 parts

[0063] Continuous glass fiber 40 parts

[0064] 0.5 parts of coupling agent

[0065] Antioxidant 0.6 parts

[0066] Lubricant 0.5 parts

[0067] Compatibilizer 2 parts

[0068] The continuous fiber reinforced polypropylene masterbatch is prepared by the following method, which comprises the following steps:

[0069] (1) Mixing preparation; 60 parts of polypropylene with a melt index of 25-65g / 10min (230°C, 2.16Kg) and a particle size of 2.5-3.5mm, 0.5 parts of silane coupling agent, 0.6 parts of antioxidant, and The oxygen agent is mixed with pentaerythritol tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate) and tris(2,4-ter...

Embodiment 3

[0077] Continuous fiber reinforced polypropylene masterbatch (glass fiber content 40%) 50 parts

[0078] 50 parts of polypropylene pellets cut by ordinary pelletizer

[0079] Continuous fiber reinforced polypropylene masterbatch, pellet length 11-13mm, particle size 2.5-3.5mm, including the following components and parts by weight:

[0080] Polypropylene 60 parts

[0081] Continuous glass fiber 40 parts

[0082] 0.5 parts of coupling agent

[0083] Antioxidant 0.6 part

[0084] Lubricant 0.5 parts

[0085] Compatibilizer 2 parts

[0086] The polypropylene pellets cut out by the common pelletizer have a pellet length of 2.5 to 3.5 mm and a particle diameter of 2.5 to 3.5 mm, including the following components and parts by weight:

[0087] Polypropylene 100 parts

[0088] Antioxidant 0.6 part

[0089] Lubricant 0.5 parts

[0090] The continuous fiber reinforced polypropylene masterbatch is prepared by the following method, which comprises the following steps:

[0091] ...

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Abstract

The invention belongs to the technical field of high-molecular material and discloses a continuous fiber reinforced polypropylene material and a preparation method thereof. The polypropylene material of the present invention comprises the following ingredients, by weight: 10-50 parts of continuous fiber reinforced polypropylene master batch and 50-90 parts of fixed length polypropylene material granule. The continuous fiber reinforced polypropylene master batch comprises the following ingredients, by weight: 40-60 parts of polypropylene, 40-60 parts of continuous fiber, 0.5-5 parts of coupling agent, 0.1-1 part of anti-oxidant, 0.1-1 part of lubricant and 1-10 parts of compatilizer. The fixed length polypropylene material granule comprises the following ingredients, by weight: 100 parts of polypropylene, 0.1-1 part of anti-oxidant and 0.1-1 part of lubricant. The invention also discloses a preparation method of the polypropylene material. The invention has advantages of reasonable design, simple operation, lower cost and easily controlled glass fiber content in a product, and excellent mechanical properties and good heat resistance of the continuous fiber reinforced polypropylene are maintained.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a continuous fiber reinforced polypropylene material and a preparation method thereof. Background technique [0002] Continuous fiber-reinforced polypropylene material is a general-purpose engineering plastic, especially continuous fiber-reinforced polypropylene material with low glass fiber content, which has high strength, high stiffness, rigid impact strength, low density, low warpage creep, Excellent dynamic fatigue resistance performance, because of its high cost performance, it is widely used in structural parts such as automobiles and home appliances, replacing metals, short glass fiber reinforced nylon and other materials. [0003] There have been publications to prepare continuous long fiber reinforced polypropylene composites. Chinese patent CN1810870 (publication date: 2009.2.25) uses medium melting index polypropylene resin to prepare ultra-high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/14C08K13/04C08K7/14C08K7/06C08K7/04B29B9/06
Inventor 蒋超杰
Owner HEFEI GENIUS NEW MATERIALS
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