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Micro-foaming polypropylene composite material and preparation method thereof

A composite material, polypropylene technology, applied in the field of material science, can solve the problems of less research on micro-foamed polypropylene composite materials, and achieve the effects of environmental protection in impact performance, small cells, and low cost

Inactive Publication Date: 2012-07-04
常熟市威腾进出口有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few studies on bamboo powder on microfoamed polypropylene composites

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036] A preparation method of micro-foamed polypropylene composite material, comprising the following steps:

[0037] (1) According to parts by weight, polypropylene resin, bamboo powder, antioxidant, nucleating agent and compatibilizer are mixed uniformly with a high-speed mixer;

[0038] (2) Using a twin-screw extruder, use multi-stage heating to extrude and granulate the above-mentioned mixed materials: the screw speed is 150-160rpm; the temperature of each zone is as follows: the first 4 sections are 160-165°C, and the rest of the rear sections 170-180°C;

[0039] (3) Add a foaming agent and a foaming aid to the cooled pellets to obtain a foaming material;

[0040] (4) The injection foaming process is adopted, the injection temperature is 175-180°C, the injection pressure speed is 35-40%, the injection pressure is 45-50Mpa, and the injection time is 30-35s to obtain micro-foamed polypropylene composite materials.

Embodiment 1

[0042] Proportion by weight of the following raw materials:

[0043] 100 parts of polypropylene resin,

[0044] 40 parts of bamboo powder,

[0045] Foaming agent 10 parts,

[0046] Foaming aid 5 parts,

[0047] Antioxidant 5 parts,

[0048] 1 part nucleating agent,

[0049] 10 parts of compatibilizer.

[0050] Wherein, the polypropylene resin is a random copolymer polypropylene resin with a melt index of 0.5g / 10min; the bamboo powder is a bamboo powder with a particle size of 100-200 mesh and a moisture content of less than 1%; the Foaming agent is azodicarbonamide; Described foaming agent is that described foaming aid is zinc oxide; Described antioxidant is phosphite antioxidant 168 and hindered phenolic antioxidant The mixture is compounded at a mass ratio of 1:1; the nucleating agent is talcum powder; the compatibilizer is polypropylene grafted with acrylic acid compound.

[0051] A preparation method of micro-foamed polypropylene composite material, comprising the ...

Embodiment 2

[0057] Proportion by weight of the following raw materials:

[0058] 100 parts of polypropylene resin,

[0059] 50 parts of bamboo powder,

[0060] Foaming agent 12 parts,

[0061] 3 parts of foaming aid,

[0062] Antioxidant 4 parts,

[0063] 2 parts of nucleating agent,

[0064] 8 parts of compatibilizer.

[0065]Wherein, the polypropylene resin is a random copolymerized polypropylene resin with a melt index of 10g / 10min; the bamboo powder is a bamboo powder with a particle size of 100-200 mesh and a moisture content of less than 1%; The foaming agent is azodicarbonamide; the foaming agent is zinc oxide; the foaming agent is zinc oxide; the antioxidant is phosphite antioxidant 168 and hindered phenolic antioxidant according to The mixture is compounded with a mass ratio of 1:2; the nucleating agent is talcum powder; the compatibilizer is polypropylene grafted with acrylic acid compound.

[0066] A preparation method of micro-foamed polypropylene composite material, c...

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Abstract

The invention discloses a micro-foaming polypropylene composite material and a preparation method thereof. The micro-foaming polypropylene composite material is composed of the following components by weight: 100 parts of polypropylene, 40 to 60 parts of bamboo powder, 10 to 15 parts of foaming agent, 1 to 5 parts of foaming assistant, 1 to 5 parts of antioxygen, 1 to 3 parts of nucleating agent and 5 to 10 parts of compatilizer. The micro-foaming polypropylene composite material is wide in raw material resource, low in cost, simple to operate and wide in application prospect. The micro-foaming polypropylene composite material which has small bubble holes, is even, compact, light in weight, good in impact performance and environment-friendly.

Description

technical field [0001] The invention relates to the field of material science, in particular to a micro-foamed polypropylene composite material and a preparation method thereof. Background technique [0002] Plant fibers, such as wood powder (fiber), bamboo powder (containing fiber), hemp fiber, straw powder, fruit shell powder, etc., are used as reinforcing materials or fillers, which are cheap, high specific strength, low density, renewable, and biodegradable and other performance. At the same time, polyolefin is the most widely used type of polymer, and a large amount of such solid waste needs to be recycled to reduce the burden on waste disposal. Plant fiber reinforced thermoplastic composites can be recycled and reused, which is environmentally friendly and sustainable. [0003] Wood (bamboo) plastic composites made of plastic and wood (bamboo) powder have received widespread attention from industry and academia for their low price, wood appearance, and insect resista...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/14C08L97/02C08J9/10B29B9/06B29C47/92B29C45/76B29C48/92
CPCB29C48/04B29C48/40B29C48/875B29C48/92B29C2948/9259B29C2948/92704B29C2948/92885B29C2948/92895
Inventor 顾惠忠
Owner 常熟市威腾进出口有限公司
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