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Microcellular foaming recycling method of waste car plastics

A technology of microcellular foaming and waste recycling, which is applied in the direction of plastic recycling and recycling technology, which can solve the problems of plastic resource recycling and waste plastic environmental pollution, and achieve the effects of saving materials, reducing molding cycle, and reducing clamping force

Inactive Publication Date: 2015-04-01
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a recycling and reuse method of waste automobile plastic microcellular foaming, so as to solve the problems of recycling of plastic resources and environmental pollution of waste plastics

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] (1) Preparation for the recycling of automobile waste:

[0042] 1) Wash the recycled plastics in a cleaning crusher and break them into small pieces of 10cm×10cm;

[0043] 2) Put the above blocks into the granulation equipment to dry and granulate to obtain granules or powder. The temperature of the drying box is controlled at 50°C, the time is controlled at 10min, and the granulation size is controlled at 3mm×3mm.

[0044] (2) Modified granulation of waste:

[0045] 1) After the above-mentioned pellets or powders and additives are weighed in proportion, they are put into a batching machine and mixed evenly to obtain a compounded material. The weight ratio is; pellets or powders 66.7%; thermoplastic elastomer grafts 3%; antioxidant 1010 tetraerythritol ester 0.1%; talcum powder 15%; glass fiber 15%; titanate coupling agent 0.2%;

[0046] 2) Put the above-mentioned mixed materials into the hopper of the parallel twin-screw extruder, and set the temperature of each sect...

Embodiment 2

[0056] (1) Preparation for the recycling of automobile waste:

[0057] 1) Wash the recycled plastics in a cleaning crusher and break them into small pieces of 10cm×10cm;

[0058] 2) Put the above blocks into the granulation equipment to dry and granulate to obtain granules or powder. The temperature of the drying box is controlled at 60°C, the time is controlled at 20min, and the granulation size is controlled at 3mm×3mm;

[0059] (2) Modified granulation of waste:

[0060] 1) After the above-mentioned pellets or powders and additives are weighed in proportion, put them into the batching machine to obtain the compounded materials uniformly at high speed, and the weight ratio is: 66.7% of pellets or powders; thermoplastic elastomer graft 10%; antioxidant 168 phenyl triphosphite 0.2%; talcum powder 20%; glass fiber 20%; titanate coupling agent 0.4%;

[0061] 2) Put the above-mentioned mixed materials into the hopper of the parallel twin-screw extruder, and set the temperature ...

Embodiment 3

[0070] (1) Preparation for the recycling of automobile waste:

[0071] 1) Wash the recycled plastics in a cleaning crusher and break them into small pieces of 10cm×10cm;

[0072] 2) Put the above blocks into the granulation equipment to dry and granulate to obtain granules or powder. The temperature of the drying box is controlled at 70°C, the time is controlled at 30min, and the granulation size is controlled at 3mm×3mm;

[0073] (2) Modified granulation of waste:

[0074] 1) Weigh the above-mentioned pellets or powder and additives in proportion and put them into the batching machine and mix them uniformly at a high speed to obtain a compounded material. The ratio of additives is as follows: pellets or powder 24%; thermoplastic elastomer graft 15% ; Antioxidant DLTP dilauryl thiodipropionate 0.4%; Talc powder 30%; Glass fiber 30%; Titanate coupling agent 0.6%;

[0075] 2) Put the above-mentioned mixed materials into the hopper of the parallel twin-screw extruder, and set t...

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Abstract

The invention discloses a microcellular foaming recycling method of waste car plastics. The method comprises the following steps: preparing the recovery of wastes, modifying the plastics, preparing the recovered material and gas mixed melt, and carrying out the injection molding. By controlling the consumption of additives and key process parameters in the microcellular injection molding, the forming performance and mechanical properties of the recycled plastics can be improved, and especially the mobility and flexibility of the recycled plastics can be improved. According to the method, the waste plastics can be molded into products with a complicated structure and various shapes, such as household appliance shells, car bumpers, and interior and exterior ornaments of cars; the consumption of materials can be reduced, the injection molding thermodynamics can be improved, and the forming period can be shortened.

Description

technical field [0001] The invention relates to the field of microporous plastic processing technology and plastic recycling, in particular to a process for recycling and reusing automobile plastics by means of supercritical microporous foam molding. Background technique [0002] Because plastic auto parts have the advantages of reducing the amount of metal used and reducing the weight of the car body, they have been widely used in the manufacture of automotive exterior decorations, interior decorations, and functional structural parts. Plastics will be used more and more in the manufacture of auto parts. However, with the increasing use of plastics, waste plastics will also continue to increase, and waste landfills and incineration will also produce a large amount of urban waste, causing environmental pollution. In order to achieve sustainable social development, we must turn waste into resources and turn waste into treasure. Therefore, the recycling and reuse of automobi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B17/00B29C69/00
CPCY02W30/62
Inventor 郭巍华林李蓓毛华杰秦训鹏李诚
Owner WUHAN UNIV OF TECH
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