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Continuous fiber reinforced polypropylene material and preparation method thereof

A technology of polypropylene material and continuous fiber, 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: 2014-06-25
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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  • Continuous fiber reinforced polypropylene material and preparation method thereof

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 copies

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

[0046] (1) Mixing preparation; 60 parts of polypropylene whose melt index is 25~65g / 10min (230℃, 2.16Kg), 0.5 part of silane coupling agent, 0.6 part of antioxidant, the antioxidant is composed of four (β -(3,5-di-tert-butyl-4hydroxyphenyl) propionic acid) pentaerythritol ester and tris(2,4-tert-butylphenyl) phosphite are mixed according to the weight of 1:2, 0.5 parts of ethyl EBS, 2 parts of maleic anhydride grafted polypropylene with a grafting rate of 1.0% are added to the high-mixer in turn, the mixing temperature is controlled at 40-60℃, and the mixing time is 3-5 Stop in minutes, then add the mixed materials to the hopper of the extruder for use;

[0047] (2) Preparation of continuou...

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, with a cutting length of 11-13mm and a particle size of 2.5-3.5mm, including the following components and parts by weight:

[0062] Polypropylene 60 parts

[0063] Continuous glass fiber 40 parts

[0064] Coupling agent 0.5 parts

[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 includes the following steps:

[0069] (1) Mixing preparation; 60 parts melt index is 25~65g / 10min (230℃, 2.16Kg), polypropylene with particle size 2.5-3.5mm, 0.5 part silane coupling agent, 0.6 part antioxidant, anti-oxidant The oxygen agent is made up of tetrakis (β-(3,5-di-tert-butyl-4 hydroxyphenyl) propionic acid) pentaerythritol ester and tris (2,4-tert-butyl ...

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, with a cutting length of 11-13mm and a particle size of 2.5-3.5mm, including the following components and parts by weight:

[0080] Polypropylene 60 parts

[0081] Continuous glass fiber 40 parts

[0082] Coupling agent 0.5 parts

[0083] Antioxidant 0.6 parts

[0084] Lubricant 0.5 parts

[0085] Compatibilizer 2 parts

[0086] The polypropylene pellets cut by the ordinary pelletizer have a pellet length of 2.5-3.5mm and a particle size of 2.5-3.5mm, including the following components and parts by weight:

[0087] Polypropylene 100 parts

[0088] Antioxidant 0.6 parts

[0089] Lubricant 0.5 parts

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

[0091] (1) Mixing preparation; 60...

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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 specifically relates to a continuous fiber reinforced polypropylene material and a preparation method thereof. Background technique [0002] Continuous fiber reinforced polypropylene material is a general engineering plastic, especially continuous fiber reinforced polypropylene material with low glass fiber content. It has high strength, high stiffness, rigid impact strength, low density, low warpage and creep, The excellent performance of anti-dynamic fatigue performance, because of its high cost performance, is widely used in structural parts such as automobiles and home appliances, replacing metals, short glass fiber reinforced nylon and other materials. [0003] It has been disclosed to prepare continuous long fiber reinforced polypropylene composite materials. Chinese Patent CN1810870 (Publication Date: 2009.2.25) uses medium melting index polypropylene resin to prepare ultra-high me...

Claims

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Application Information

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Patent Type & Authority Patents(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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