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Recovery and shaping process of polypropylene composite waste material

A molding process, polypropylene technology, applied in the direction of plastic recycling, recycling technology, reagents, etc., can solve the problems of incineration without economic benefits, secondary pollution, etc., so as to prevent secondary pollution, protect the environment, and have great design flexibility Effect

Inactive Publication Date: 2005-08-10
刘明春
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the incineration method has no economic benefits at all, and more importantly, it will cause secondary pollution, so it is not a long-term feasible recycling method

Method used

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  • Recovery and shaping process of polypropylene composite waste material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Because thermoplastics have repeatability, strong recyclability, and are not easy to cause secondary pollution, so in the embodiment of the present invention, the trimmed edge polypropylene glass fiber reinforced resin-based composite waste of automotive interior parts is: 40% by weight, The polypropylene composite waste is crushed or punched into sheets with a side length of 2 mm and added to the mixing heater in the form of filler, and then 41% by weight of thermoplastic material pure polypropylene is added, and the coupling agent is silane coupling agent KH-550, the chemical name is For: - glycidyl ether oxypropyltrimethoxysilane: 12% by weight, ethylene bisstearyl EBS lubricating aid: 8% by weight, and uniformly mix it into a mixture; then put the above mixture in a heating container Heating inside, the heating temperature is: 200 ℃, keep warm for 5 minutes until the mixture enters the molten state (viscous fluid state), first put 6% by weight of glass fiber cloth in...

Embodiment 2

[0021] In the embodiment of the present invention, the polypropylene glass fiber reinforced resin-based composite waste of the punched edge of the automotive interior parts is taken as: 45% by weight, and the length of the punched edge of the polypropylene composite waste is 3mm in the form of a filler and added to the mixed heater. , then add pure polypropylene 35.5% by weight, get silane coupling agent KH-550: 11% by weight, ethylene bis stearyl EBS lubricating aid: 6.5% by weight and uniformly mix as a compound; The heater is heated, the heating temperature is: 210 ℃, keep warm for 8 minutes until the mixture enters the molten state (viscosity state), first put 5.5% by weight of glass fiber cloth in the mold, and then move the molten mixture into the mold for molding , The material shifting time is controlled at 60s. Before material transfer, use methyl silicone oil release agent to evenly distribute in the mold to make demoulding easy without damaging the mold. The molten...

Embodiment 3

[0023] In the embodiment of the present invention, the trimmed edge polypropylene composite scrap of automobile interior parts is taken as: 50% by weight, and the polypropylene composite scrap is pulverized into a diameter of 2 mm particles and added in the mixing heater in the form of filler, and then in the mixer Add 30% by weight of pure polypropylene, take silane coupling agent KH-550: 10% by weight and select ethylene bisstearyl EBS lubricating aid: 5% by weight, and mix them uniformly to form a mixture; then mix the above mixture Heating, the heating temperature is: 220°C, keep warm for 10 minutes until the mixture enters the molten state, first put 5% by weight of glass fiber cloth in the mold, and then move the molten mixture into the mold for molding, the material transfer time is controlled at 70s . Before material transfer, use methyl silicone oil release agent to evenly distribute in the mold. The molten mixture is kept in the mold for 3 minutes, the pressure is: ...

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Abstract

A process for reclaiming the rejected polypropene composition, that is, the leftover of internal decoration for car, includes such steps as pulverizing, proportionally mixing it with polypropene, coupling agent and assistant, heating until the mixture is fused, putting glass fibre cloth in mould, pouring the fused mixture in it, pressing, cooling and demoulding.

Description

technical field [0001] The invention relates to a recovery and molding process of polypropylene composite waste, in particular to the recovery and reuse of scraps of automotive interior parts. Background technique [0002] In addition to the advantages of light weight, energy saving, safety and comfort, polypropylene (PP) glass fiber reinforced resin matrix composite material also has the characteristics of more corrosion resistance than metal, especially better resistance to gasoline with high methanol content . In addition, glass fiber reinforced resin-based composite materials also have great design flexibility, easy processing, one-step molding of complex parts, and easy automation, which can reduce production costs. Therefore, the amount of glass fiber reinforced resin-based composite materials in the automotive field is increasing day by day, and the proportion of its amount in the automobile has often become an important symbol to measure the level of the automobile ...

Claims

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Application Information

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IPC IPC(8): B29C39/00B29C70/84C08J11/04C08L23/12
CPCY02P20/143Y02W30/62
Inventor 吴晓波姚正军陈江彪
Owner 刘明春
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