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Modification method through depolymerization and purification of TPA from waste polyester textiles and addition of film-blowing LLDPE

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

Inactive Publication Date: 2019-09-24
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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  • Modification method through depolymerization and purification of TPA from waste polyester textiles and addition of film-blowing LLDPE
  • Modification method through depolymerization and purification of TPA from waste polyester textiles and addition of film-blowing LLDPE
  • Modification method through depolymerization and purification of TPA from waste polyester textiles and addition of film-blowing LLDPE

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method of chemically depolymerizing and purifying TPA with polyester waste textiles according to the present invention, adding blown film grade LLDPE material, and modifying it into a special alloy material for blown film 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 LLDPE blown film grade raw materials in the following parts by weight.

[0011] TPA 10 parts

[0012] Blown film grade LLDPE 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 / LLDPE blown film grade alloy material is obtained.

Embodiment 2

[0019] TPA 20 parts

[0020] Blown film grade LLDPE 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 / LLDPE blown film grade alloy material is obtained.

Embodiment 3

[0027] 30 parts of TPA

[0028] Blown film grade LLDPE 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 / LLDPE blown film grade alloy material is obtained.

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Abstract

The invention discloses a modification method for preparing a novel special alloy material used for film blowing through chemical depolymerization and purification of TPA from waste polyester textiles and addition of a film-blowing-grade LLDPE material. The method comprises the following steps: heating glycerin residue to 260 to 280 DEG C, depolymerizing the waste polyester textiles with heated glycerin residue, carrying out filtering, decolorizing and purifying so as to obtain TPA, adding modifying auxiliary agents like a compatibilizing agent, then adding the film-blowing-grade LLDPE material in a certain proportion, and carrying out extrusion granulation so as to obtain a novel special TPA / LLDPE alloy material used for film blowing.

Description

technical field [0001] The invention discloses a method for modifying polyester waste textiles into a special new material for alloy blown film by chemically depolymerizing and purifying TPA plus blown film grade LLDPE 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 blown film through chemical depolymerization and purification of TPA and blown ...

Claims

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Application Information

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IPC IPC(8): C08L23/08C08K5/092C08J5/18C07C51/09C07C51/42C07C63/26
CPCC07C51/09C07C51/42C08J5/18C08J2323/08C08K5/092C07C63/26
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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