Method for depolymerization purification of TPA by using polyester waste textiles and modifying by adding blow-molding-grade HDPE

A polyester and modified technology, applied in the field of new alloy materials for blow molding, can solve the problems of landfill or incineration, inability to directly reprocess, waste of land resources and secondary pollution, etc.

Inactive Publication Date: 2019-10-22
PLASTIC UNION NEW MATERIAL TECH HUBEI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As we all know, except for a very small amount of existing waste textiles that are used by people using physical methods, they can neither be reused nor directly reprocessed after recycling, and can only be used as landfills or incinerated.
Not only waste land resources but also cause secondary pollution

Method used

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  • Method for depolymerization purification of TPA by using polyester waste textiles and modifying by adding blow-molding-grade HDPE
  • Method for depolymerization purification of TPA by using polyester waste textiles and modifying by adding blow-molding-grade HDPE
  • Method for depolymerization purification of TPA by using polyester waste textiles and modifying by adding blow-molding-grade HDPE

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method of chemically depolymerizing and purifying TPA from polyester waste textiles according to the present invention, adding blow molding grade HDPE material, and modifying it into a special alloy material for blow molding is carried out according to the following process procedures:

[0010] Depolymerize polyester waste textiles with glycerin residue heated to 260-280 degrees, filter the dregs in the solution, decolorize and purify to obtain liquid TPA. Prepare TPA plus HDPE blow molding grade raw materials in the following parts by weight.

[0011] TPA 10 parts

[0012] Blow molding grade HDPE 85 parts

[0013] Compatibility modifier 5 parts

[0014] Test results

[0015]

[0016] The above-mentioned prepared components and parts by weight are mixed, extruded and granulated, and a new TPA / HDPE blow molding grade alloy material is obtained.

Embodiment 2

[0018] Referring to the method of Example 1, each component and parts by weight were prepared in the following proportions to prepare TPA plus HDPE blow molding grade raw materials.

[0019] TPA 20 parts

[0020] Blow molding grade HDPE 75 parts

[0021] Compatibility modifier 5 parts

[0022] Test results

[0023]

[0024] The above-mentioned prepared components and parts by weight are mixed, extruded and granulated, and a new TPA / HDPE blow molding grade alloy material is obtained.

Embodiment 3

[0026] Referring to Examples 1 and 2, prepare TPA plus HDPE blow molding grade raw materials with each component and parts by weight in the following proportions.

[0027] 30 parts of TPA

[0028] Blow molding grade HDPE 65 parts

[0029] Compatibility modifier 5 parts

[0030] Test results

[0031]

[0032] The above-mentioned prepared components and parts by weight are mixed, extruded and granulated, and a new TPA / HDPE blow molding grade alloy material is obtained.

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Abstract

The invention discloses a method for carrying out chemical depolymerization purification on TPA by using polyester waste textiles and modifying by adding a blow-molding-grade HDPE material to obtain anew alloy blow molding material. According to the method, polyester waste textiles are subjected to depolymerization, filtration, decolorization and purification by using glycerin residue heated to atemperature of 260-280 DEG C to form TPA, a compatibilizer and other modification auxiliary agents are added, a blow-molding-grade HDPE material is added according to a certain ratio, and uniform mixing and extruding granulation are sequentially performed to obtain the new special alloy material for TPA / HDPE blow molding.

Description

technical field [0001] The invention discloses a method for modifying polyester waste textiles into new special alloy materials for blow molding by chemical depolymerization and purification of TPA and blow molding grade HDPE material. [0002] technical background [0003] As we all know, except for a very small amount of existing waste textiles that are used by people using physical methods, they can neither be reused nor directly reprocessed after recycling, and can only be landfilled or incinerated. Not only wasting land resources but also causing secondary pollution. Contents of the invention [0004] The purpose of the present invention is in order to overcome the defective of above-mentioned background technology, not only completely eliminate this backward processing mode fundamentally, solve secondary pollution thoroughly. The polyester waste spinning is modified into a new alloy material for blow molding through chemical depolymerization, purification of TPA and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/06C08K5/092C07C51/09C07C51/42C07C63/26
CPCC07C51/09C07C51/42C08L23/06C08L2207/062C08L101/00C08K5/092C07C63/26
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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