High-strength high-toughness polypropylene regenerated particles and preparation method thereof

A technology of polypropylene and high toughness, which is applied in the field of recycling and utilization of waste plastics in the renewable resources industry. It can solve the problems of low added value of science and technology and poor quality of polypropylene recycled materials, so as to solve the problem of resource shortage, improve technological content, and solve environmental problems. problem effect

Inactive Publication Date: 2018-08-14
中华全国供销合作总社天津再生资源研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the above-mentioned problems in the prior art, the present invention provides a method for preparing high-strength and high-toughness polypropylene recycled granules. The prepared polypropylene recycled granules have high strength and good toughne

Method used

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  • High-strength high-toughness polypropylene regenerated particles and preparation method thereof

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preparation example Construction

[0027] The preparation method of the high-strength and high-toughness polypropylene recycled particles of the present invention comprises the following steps:

[0028] Step 1, weighing raw materials by weight: waste polypropylene 40-60%, polyolefin resin 5-15%, elastomer 5-10%, inorganic rigid particles 10-20%, coupling agent 0.1-2%, reinforcement 5-20% of additives, 1-10% of compatibilizers, 0.1-1% of nucleating agents, and 0.5-1% of other additives;

[0029] Step 2: Activation of inorganic rigid particles: put the corresponding weight of inorganic rigid particles in step 1 into a 1000 rpm high-speed mixer, slowly add coupling agent for mixing and coating, control the temperature, stop mixing after 5 to 7 minutes, and obtain Activate inorganic rigid particles;

[0030] Step 3, blending the blend: first put the waste polypropylene resin, polyolefin resin, elastomer and activated inorganic rigid particles, reinforcing agent, compatibilizer into the high mixer and mix thoroughl...

Embodiment 1

[0033] A high-strength and high-toughness polypropylene regenerated granule, its components are: waste polypropylene 60%, polypropylene, high-density polyethylene, low-density polyethylene composition 6%; ethylene-octene copolymer (POE), ethylene - vinyl acetate copolymer (EVA) composition 8%; talcum powder 400 mesh, 800 mesh, 1250 mesh composition 19% (titanate or aluminate coupling agent 1%); magnesium sulfate whisker 3%; Maleic anhydride grafted polypropylene (PP-g-MAH), maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH) composition 2%; stearic acid, calcium stearate, polyethylene wax 0.2 %, 0.5% of nucleating agent, 0.3% of titanium dioxide, to prepare regenerated particles A1.

Embodiment 2

[0035] A high-strength and high-toughness polypropylene regenerated granule, its components are: waste polypropylene 48%, polypropylene, high-density polyethylene, low-density polyethylene composition 6%; ethylene-octene copolymer (POE), thermoplastic Elastomer (TPE) composition 6%; modified talc powder, calcium carbonate composition 19% (titanate or aluminate coupling agent 1%); acrylonitrile-styrene copolymer (AS), glass fiber reinforced Polypropylene (GFPP) composition 17%; maleic anhydride grafted polypropylene (PP-g-MAH), maleic anhydride grafted ethylene-octene copolymer (POE-g-MAH) composition 2%; stearin Acid, calcium stearate, polyethylene wax 0.2%, nucleating agent 0.5%, titanium dioxide 0.3%, prepare masterbatch A2.

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Abstract

The invention provides high-strength high-toughness polypropylene regenerated particles, prepared from the following materials by weight percent: 40-60 percent of waste polypropylene, 5-15 percent ofpolyolefin resin, 5-10 percent of elastomer, 10-20 percent of inorganic rigid particle and coupling agent, 5-20 percent of enhancer, 1-10 percent of bulking agent, 0.1-1 percent of nucleating agent and 0.5-1 percent of other aids. The invention also provides specific production process parameters and a preparation method of the polypropylene regenerated particles; the preparation method comprisesthe steps of firstly adopting a high-speed mixer to evenly mix the proportioned materials, and then preparing the polypropylene regenerated particles by the shear plasticizing action of a twin-screw extruder. The waste polypropylene is taken as a main raw material to prepare high-performance recycled polypropylene, the technological content of the waste polypropylene is effectively improved, the waste polypropylene is recycled, both the resource shortage problem and the environment problem are solved, and certain guiding significance is achieved for the development of recycled plastics industry.

Description

technical field [0001] The invention belongs to the field of recycling and utilization of waste plastics in the renewable resources industry, and relates to regeneration and modification technology of waste polypropylene plastics, in particular to a preparation method of high-strength and high-toughness polypropylene regeneration particles. Background technique [0002] Polypropylene plastic products have quickly occupied the markets of daily chemicals, electronic appliances, automobiles, and construction due to their advantages such as light weight, high strength, and easy processing and molding. However, with the aging of plastics and the replacement of items, the waste of a large amount of polypropylene has put a lot of pressure on the environment, resulting in serious "white pollution". Due to the enhancement of environmental awareness, the recycling of waste polypropylene has gradually become a research hotspot. Recycled plastics have become an effective means to solve...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L23/14C08L23/06C08L23/08C08L23/16C08L101/00C08L51/06C08K13/06C08K9/10C08K3/34C08K3/26
CPCC08K2003/265C08L23/12C08L2205/025C08L2205/035C08L2207/062C08L2207/066C08L2207/068C08L2207/20C08L23/14C08L23/06C08L23/0815C08L23/0853C08L23/16C08L101/00C08L51/06C08K13/06C08K9/10C08K3/34C08K3/26
Inventor 罗思杜波杜涛
Owner 中华全国供销合作总社天津再生资源研究所
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