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Recovery utilization method of plastics

A technology for plastics and mixed materials, applied in the field of plastic products, can solve the problems of affecting the sustainable use of land, low density of plastic waste, increasing pressure on land resources, etc., to reduce losses, speed up paint stripping, and improve utilization efficiency.

Inactive Publication Date: 2017-09-08
绵阳市杉木塑料科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, landfilling of waste plastics will not only occupy a large amount of land, but also the occupied land will not be restored for a long time, affecting the sustainable use of land
[0004] At present, the recycling of waste plastics mainly includes physical recycling and chemical recycling. my country currently uses landfill and incineration in the treatment of waste plastics; landfill processing has plastic waste with low density and large volume. The large area increases the pressure on land resources and is difficult to degrade; incineration of waste plastics will produce polycyclic aromatic hydrocarbons, carbon monoxide, polyurethane and other harmful substances, such as PVC will produce HCI, polyurethane will produce cyanide, etc. pollution

Method used

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  • Recovery utilization method of plastics

Examples

Experimental program
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Effect test

Embodiment 1

[0029] A method for recycling plastics, comprising the steps of:

[0030] Step 1. After crushing the recovered plastic, add it to the cleaning solution for ultrasonic cleaning, stir and clean it with water, dry it, then add it to the paint remover solution and soak it ultrasonically for 60 minutes, stir it with water, and dry it to obtain the pretreated plastic;

[0031] Step 2, by weight, take 100 parts of pretreated plastics, 10 parts of toughening agent, 1 part of accelerator, 10 parts of modified montmorillonite powder, 3 parts of anti-aging agent, 3 parts of light stabilizer and add them to the high-speed mixer to The rotating speed of 15000rpm was stirred and mixed for 5min to obtain the mixture;

[0032]Step 2. Add the obtained mixture into an integrated ultrasonic extrusion device, and extrude and granulate under the action of ultrasonic power 500W and frequency 30KHz to manufacture molded products; the screw speed of the integrated ultrasonic extrusion device is 50r ...

Embodiment 2

[0035] A method for recycling plastics, comprising the steps of:

[0036] Step 1. After crushing the recovered plastic, add it to the cleaning solution for ultrasonic cleaning, stir and clean it with water, dry it, then add it into the paint remover solution and soak it ultrasonically for 120 minutes, stir it with water, and dry it to obtain the pretreated plastic;

[0037] Step 2, by weight, get 120 parts of pretreated plastics, 20 parts of toughening agent, 3 parts of accelerator, 15 parts of modified montmorillonite powder, 5 parts of antiaging agent, 5 parts of light stabilizer and add in high-speed mixer, with The rotating speed of 25000rpm was stirred and mixed for 5min to obtain the mixture;

[0038] Step 2. Add the obtained mixture into an ultrasonic extrusion integrated device, and extrude and granulate under the action of ultrasonic power of 1000W and frequency of 50KHz to manufacture molded products; the screw speed of the ultrasonic extrusion integrated device is 1...

Embodiment 3

[0041] A method for recycling plastics, comprising the steps of:

[0042] Step 1. After crushing the recovered plastic, add it to the cleaning solution for ultrasonic cleaning, stir and clean it with water, and dry it, then add it to the paint remover solution and soak it ultrasonically for 90 minutes, stir it with water, and dry it to obtain the pretreated plastic;

[0043] Step 2, by weight, get 110 parts of pretreated plastics, 15 parts of toughening agent, 2 parts of accelerator, 12 parts of modified montmorillonite powder, 4 parts of antiaging agent, 4 parts of light stabilizer and add in high-speed mixer, with The rotating speed of 20000rpm was stirred and mixed for 8min to obtain the mixture;

[0044] Step 2. Add the obtained mixture into an ultrasonic extrusion integrated device, and extrude and granulate under the action of ultrasonic power 800W and frequency 40KHz to manufacture molded products; the screw speed of the ultrasonic extrusion integrated device is 80r / m...

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Abstract

The invention discloses a recovery utilization method of plastics, and the method comprises the following steps: crushing recovered plastics, adding the plastics into cleaning fluid and paint removing fluid to conduct ultrasonic cleaning and paint removing, then stirring and cleaning the plastics with water, and baking the plastics to obtain pretreated plastics; taking and adding the pretreated plastics, a toughener, an antiaging agent, a light stabilizer and the like into a high speed mixer, and conducting stirring and mixing to obtain a mixture; and adding the obtained mixture into an ultrasonic extrusion integrated device to conduct extrusion granulation and produce molded products. The recovery utilization method of plastics can solve the problem of difficulty in removing the impurities from the waste plastics, and simultaneously can improve the utilization efficiency of the waste plastics; the cleaned and paint-removed waste plastics are used as a main raw material and matched with auxiliaries to produce plastic particles; and the prepared plastic particles have excellent mechanical properties and can be used for producing other plastic products. The recovery utilization method of plastics has the advantages of extensive sources of materials, low cost and simple process requirements, recovers the waste plastic resources, simultaneously can create larger economic value, realizes regenerative utilization of the waste plastics, and reduces environmental pollution.

Description

technical field [0001] The invention relates to the field of plastic products, in particular to a method for recycling plastics. Background technique [0002] With the rapid development of the plastic products industry, plastic products have become inseparable from human production and life. A large number of plastic products have been widely used, accompanied by a large amount of waste plastics. According to statistics, the amount of waste plastics produced in my country every year is about 5 million tons. Due to the characteristics of corrosion resistance and difficult decomposition of plastics, especially the pollution caused by disposable plastic packaging waste and plastic agricultural film being discarded by people at will, and waste The potential harm caused by plastics to the environment has become an environmental issue of concern to all walks of life in our country. [0003] First of all, the continuous accumulation of waste plastic products in the soil will affect...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L23/12C08K13/06C08K9/06C08K9/04C08K3/34C08K5/57C08K7/14C08L77/10C08L51/00C09D9/00C09D9/04C11D1/825C11D3/28C11D3/22C11D3/20C11D3/60B29B17/00B29B9/06
CPCB29B9/06B29B17/00B29B2017/001B29B2017/0015C08L23/12C08L67/02C08L2207/20C09D9/005C09D9/04C11D1/662C11D1/667C11D1/721C11D1/825C11D3/2086C11D3/2096C11D3/225C11D3/28C08L51/006C08K13/06C08K9/06C08K9/04C08K9/08C08K3/346C08K5/57C08K7/14Y02P20/54Y02W30/62
Inventor 李强李国军
Owner 绵阳市杉木塑料科技有限责任公司
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