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Method for recycling decorative waste plastics

A technology for waste plastics and recycling methods, applied in the field of decorative waste plastics recycling, can solve problems such as comprehensive performance reduction, affecting the mechanical properties of plastic products, chemical and composite fractures, etc. The effect of improved performance

Inactive Publication Date: 2018-01-26
ANHUI FENGJIE METAL RESOURCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous improvement of people's living standards, the consumption of daily-use plastic products and automotive plastic products has increased year by year, and it has also become one of the main sources of waste plastics. If these waste plastics are not handled properly, it will damage the environment and endanger people. Good health, these plastic products that play a decorative role are mainly composed of synthetic resins, and additives such as plasticizers, lubricants, and colorants are used as auxiliary components. Under the action of the environmental medium, the bottom edge of the molecular structure occurs, the plasticizer and other components volatilize, and the chemical compound is broken, which leads to the deterioration of the mechanical properties and the decrease of the overall performance. When used directly, due to the presence of more impurities, When re-preparing plastic products, it usually has poor combination with plastic products and affects the mechanical properties of plastic products. Therefore, it is necessary to rationalize waste plastics to improve their comprehensive performance and combination with synthetic rubber.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for recycling decorative waste plastics, comprising the following:

[0014] (1) Dry the collected decorative waste plastics until the moisture content is lower than 0.1wt%, then add them to the pulverizer, and pulverize them to obtain waste particles with a particle size of no more than 2cm;

[0015] (2) Place the waste particles obtained above in a gasification furnace, heat them at a temperature of 200°C in an atmosphere with an oxygen content of 25%, then continuously extract and collect the gasification gas, and simultaneously inject an equal amount of nitrogen, After the output gas is completely nitrogen, the collected gas is cooled to normal temperature to obtain a solid material;

[0016] (3) Take out the ungasified material and place it in a reaction container, add 0.6% polyethylene glycol, 0.8% trimethoxysilane, and 3% linseed oil equivalent to its weight, preheat to 150°C and pass Inject carbon dioxide, heat up to 250°C, keep warm for 1.5 hours, then...

Embodiment 2

[0018] A method for recycling decorative waste plastics, comprising the following:

[0019] (1) Dry the collected decorative waste plastics until the moisture content is lower than 0.1wt%, then add them to the pulverizer, and pulverize them to obtain waste particles with a particle size of no more than 2cm;

[0020] (2) Put the waste particles obtained above in a gasification furnace, heat them at a temperature of 220°C in an atmosphere with an oxygen content of 20%, then continuously extract and collect the gasification gas, and simultaneously feed an equal amount of nitrogen, After the output gas is completely nitrogen, the collected gas is cooled to normal temperature to obtain a solid material;

[0021] (3) Take out the ungasified material and put it in the reaction container, add 0.3% polypropylene glycol glycidyl ether, 1.2% 1,4-butylene glycol diacrylate, 4% linseed Oil, preheated to 160°C, put in carbon dioxide, heat up to 240°C, keep warm for 2 hours, then cool down ...

Embodiment 3

[0023] A method for recycling decorative waste plastics, comprising the following:

[0024] (1) Dry the collected decorative waste plastics until the moisture content is lower than 0.1wt%, then add them to the pulverizer, and pulverize them to obtain waste particles with a particle size of no more than 2cm;

[0025] (2) Place the waste particles obtained above in a gasification furnace, heat them at a temperature of 180°C in an atmosphere with an oxygen content of 30%, then continuously extract and collect the gasification gas, and simultaneously feed an equal amount of nitrogen, After the output gas is completely nitrogen, the collected gas is cooled to normal temperature to obtain a solid material;

[0026] (3) Take out the ungasified material and place it in a reaction vessel, add 0.7% of p-toluenesulfonate chlorine, 0.6% of tetraethyl orthosilicate, and 2% of linseed oil equivalent to its weight, and preheat to 160 After 20 °C, carbon dioxide is introduced, the temperatur...

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Abstract

The invention belongs to the technical field of decorative waste plastics and in particular relates to a method for recycling decorative waste plastics. The method comprises the following steps: drying waste plastics, grinding, performing gasification separation and performing particle reconstruction. Compared with the prior art, the method disclosed by the invention has the advantages that by utilizing different gasification temperatures of main rubber materials and additives, the additives are oxidized in a gasifier, cooled and collected after cooling, so that the classification treatment ofthe rubber materials and the additives can be realized. Then, the main rubber materials are treated with a cross-linking agent and linseed oil in a carbon dioxide atmosphere, so that molecules of themain rubber materials can be reconstructed, and the mechanical property of the extruded material is obviously improved. The binding ability of the prepared plastic products and rubber is high, the decorative plastics are effectively recycled, and the method has excellent environmental and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of recycling decorative waste plastics, in particular to a method for recycling decorative waste plastics. Background technique [0002] With the continuous improvement of people's living standards, the consumption of daily-use plastic products and automotive plastic products has increased year by year, and it has also become one of the main sources of waste plastics. If these waste plastics are not handled properly, it will damage the environment and endanger people. Good health, these plastic products that play a decorative role are mainly composed of synthetic resins, and additives such as plasticizers, lubricants, and colorants are used as auxiliary components. Under the action of the environmental medium, the bottom edge of the molecular structure occurs, the plasticizer and other components volatilize, and the chemical compound is broken, which leads to the deterioration of the mechanical properties an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/20C08J11/12C08J11/10C08L23/06C08L23/12C08L25/06C08L27/06C08L63/00C08L33/12C08L55/02C08L77/00
CPCY02W30/62
Inventor 崔大海房玉菡
Owner ANHUI FENGJIE METAL RESOURCES CO LTD