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Process for efficiently modifying waste polypropylene in green manner

A technology for waste polypropylene and polypropylene particles, which is applied in the field of green and efficient modification of waste polypropylene, can solve problems such as insignificant effects, and achieve the effects of avoiding secondary pollution, excellent performance indicators, and obvious enhancement effect.

Inactive Publication Date: 2017-03-22
界首市华腾塑业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In recent years, scientific research workers have done a lot of research work on improving the performance of PP. By adding rubber or elastomer materials, glass fibers, color masterbatches, grafted acrylic acid, etc. to PP, it is expected to improve the performance of PP by adding these fillers. performance, but the effect is not obvious

Method used

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  • Process for efficiently modifying waste polypropylene in green manner
  • Process for efficiently modifying waste polypropylene in green manner

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Embodiment Construction

[0026] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with the examples.

[0027] A green and high-efficiency modification process for waste polypropylene, which comprises the following steps:

[0028] (1) Crushing waste polypropylene and making polypropylene granules through a granulator, drying the polypropylene granules at a set temperature for two hours;

[0029] (2) Mix magnesium hydroxide, pentaerythritol ester, and high-pressure polyethylene with polypropylene particles according to the set addition amount;

[0030] (3) add the dispersant of setting mass percentage in the mixture of step (2) gained and stir it and make it mix;

[0031] (4) set the temperature and the screw speed of the twin-screw extruder, add the final compound formed in the step (3) into the twin-screw extruder and mix and extrude continuously;

[003...

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Abstract

The invention discloses a process for efficiently modifying waste polypropylene in a green manner. The process includes steps of granulating the waste polypropylene; drying the polypropylene; adding magnesium hydroxide, pentaerythritol ester and high-pressure polyethylene into the polypropylene to obtain first mixtures; adding dispersing agents into the first mixtures to obtain second mixtures; extruding the second mixtures by the aid of double screws; adding magnesium oxide whiskers into the second mixtures and the like. The process has the advantages that the waste polypropylene can be processed and modified under simple process conditions, accordingly, the mechanical properties and the flame-retardant properties of the polypropylene can be improved, the process cycle can be shortened, secondary pollution can be prevented, the cost can be saved, and environments can be protected.

Description

technical field [0001] The invention relates to the technical field of recovery and recycling of waste plastics, in particular to a green and high-efficiency modification process of waste polypropylene. Background technique [0002] At present, the world's annual output of plastic products has exceeded 200 million tons, and is still increasing at a rate of 30%. However, with the rapid development of the world's plastics industry, a large amount of waste plastics have also been produced. These waste plastics are still increasing with the increase of plastic products, but the recycling rate of plastics is low. Due to their inherent polymer properties, their biodegradability is poor, and their decomposition speed is slow. Long-term dispersion in nature will cause environmental pollution. negatively affect human health. [0003] Polypropylene (PP) plastic has many advantages such as low density, high specific strength (ratio of strength to relative density), corrosion resistan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L23/06C08K13/04C08K7/08C08K3/22C08K5/103C08K5/09B29C47/92B29C48/92
CPCC08L23/12B29C48/92B29C2948/9258B29C2948/92704C08L2201/02C08L2207/066C08L2207/20C08L23/06C08K13/04C08K7/08C08K2003/2224C08K5/103C08K5/09
Inventor 陈从华
Owner 界首市华腾塑业有限公司
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