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Foamed plastic sheet material prepared from waste and old polypropylene and rubber, and preparation method thereof

A technology of waste polypropylene and foam plastics, which is applied in the field of engineering plastics, can solve problems such as waste and environmental pollution, and achieve the effects of no three wastes discharge, improved melt strength, and simple operation techniques

Inactive Publication Date: 2011-11-16
CHANGSHU JIANGSHUN PLASTIC PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention not only solves the problem of product pollution and waste, but also improves the performance of the product, with simple operation and low cost

Method used

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  • Foamed plastic sheet material prepared from waste and old polypropylene and rubber, and preparation method thereof
  • Foamed plastic sheet material prepared from waste and old polypropylene and rubber, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] 80 parts of waste polypropylene film, 15 parts of modifier waste rubber powder, 4 parts of dicyandiamide AC foaming agent, 0.5 part of cross-linking agent dicumyl peroxide, 40 parts of filler talcum powder, cross-linking auxiliary agent 0.5 parts of divinylbenzene.

[0034] Add waste polypropylene film, modifier and filler plastics to the mixer according to the metering, knead for 10 minutes at 110°C, then add dicyandiamide AC foaming agent, and mix at 80°C for 10 minutes minutes; continue to add cross-linking agent dicumyl peroxide and cross-linking aid divinylbenzene, knead at 80°C for 10 minutes, and cross-link molding; put the mixture into the extruder and extrude, Foaming and shaping in the plastic machine, the foaming temperature is 160°C, and the heating time is 15 minutes to obtain a foamed plastic sheet product 1, microporous, density 0.18g / cm3, Shore hardness 36, tensile strength 0.95Mpa, elongation Elongation 86%, elasticity 27%.

Embodiment 2

[0036] 90 parts of waste polypropylene film, 30 parts of modifier waste rubber powder, 7 parts of dicyandiamide AC foaming agent, 1.0 parts of cross-linking agent dicumyl peroxide, 80 parts of filler talcum powder, cross-linking auxiliary agent 0.8 parts of divinylbenzene.

[0037] Add waste polypropylene film, modifier and filler plastics to the mixer according to the metering, knead at 120°C for 5 minutes, then add dicyandiamide AC foaming agent, knead at 100°C and 7 minutes; continue to add the cross-linking agent dicumyl peroxide and the cross-linking auxiliary divinylbenzene, knead and knead for 7 minutes at 100 ° C, cross-linking; put the mixture into the extruder to extrude, Foaming and shaping in a hot compression molding machine, the foaming temperature is 170°C, and the heating time is 13 minutes to obtain a foamed plastic sheet product 2, microporous, density 0.22g / cm3, Shore hardness 38, tensile strength 0.98Mpa, 87% elongation, 29% elasticity.

Embodiment 3

[0039] 100 parts of waste polypropylene film, 40 parts of modifier waste rubber powder, 10 parts of dicyandiamide AC foaming agent, 1.5 parts of cross-linking agent dicumyl peroxide, 110 parts of filler talcum powder, cross-linking auxiliary agent 1 part of divinylbenzene.

[0040] Add waste polypropylene film, modifier and filler plastic in the mixer according to the metering, knead at 120°C for 5 minutes, then add dicyandiamide AC foaming agent, knead at 120°C and 5 minutes; continue to add crosslinking agent dicumyl peroxide and crosslinking aid divinylbenzene, knead and knead for 5 minutes at 120 ° C, crosslinking; put the mixture into the extruder to extrude, Foaming and shaping in a hot compression molding machine, the foaming temperature is 180°C, and the heating time is 10 minutes to obtain a foamed plastic sheet product 3, microporous, density 0.28g / cm3, Shore hardness 40, tensile strength 1.00Mpa, 88% elongation, 30% elasticity.

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Abstract

The invention relates to a foamed plastic sheet material prepared from waste and old polypropylene and rubber, and preparation method thereof. Ingredients of the foamed plastic sheet material comprise 80-100 parts of waste and old polypropylene film, 15-40 parts of modifier, 4-10 parts of foaming agent, 0.5-1.5 parts of cross-linking agent, 40-110 parts of filler and 0.5-1 part of crosslinking auxiliary agent. The preparation method comprises steps of: adding waste and old polypropylene, a modifier and a filler in a mixing roll according to measurement, plasticating and adding a foaming agent for mixing; then adding a cross-linking agent and a crosslinking auxiliary agent, mixing and crosslinking for moulding; and putting a mixture into an extruder for extrusion, and foaming and fixing in a hot pressing moulding machine. The foamed plastic sheet material of the invention employs the waste and old polypropylene as a base-material, and is modified by the waste and old rubber powder and moulded through a crosslinking foaming, so as to prepare an ideal foam sheet material whose physical and mechanical property is near to that of a product made from a fresh material. In addition, the method has advantages of easily available raw materials, simple operation, no 'three wastes (waste gas, waste water and industrial residue)' discharge, etc., and has substantial economic benefits.

Description

technical field [0001] The invention relates to the technical field of engineering plastics, in particular to a foam plastic sheet prepared from waste polypropylene and rubber and a preparation method thereof. Background technique [0002] Since the beginning of the 21st century, protecting the global environment, building a resource-recycling society, and following the principles of sustainable development have become a hot topic and an urgent task in the world. Waste polypropylene film and waste rubber are not easy to degrade and will be polluted by the environment. Recycling them can reduce the waste of resources and protect the environment, which is in line with the direction of market research and development. [0003] In recent years, as a high-performance green foaming material, polypropylene foaming plastic has been favored by people for its excellent heat resistance, mechanical strength and good environmental adaptability, and its processing cost is low. Due to its...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/12C08L21/00C08J9/10B29B7/72B29C44/60
Inventor 邱玉珍
Owner CHANGSHU JIANGSHUN PLASTIC PROD
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