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Method for depolymerizing and purifying TPA by using waste polyester textiles and adding film-blowing HDPE for modification

A polyester and modified technology, which is applied in the field of new alloy materials for blown film, can solve the problems of landfill or incineration, which cannot be directly reprocessed, waste of land resources, and secondary pollution.

Inactive Publication Date: 2019-09-20
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 depolymerizing and purifying TPA by using waste polyester textiles and adding film-blowing HDPE for modification
  • Method for depolymerizing and purifying TPA by using waste polyester textiles and adding film-blowing HDPE for modification
  • Method for depolymerizing and purifying TPA by using waste polyester textiles and adding film-blowing HDPE for modification

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 HDPE 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 HDPE blown film grade raw materials in the following parts by weight.

[0011] TPA 10 parts

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

Embodiment 2

[0018] With reference to the method of Example 1, each component and parts by weight were prepared in the following ratios to prepare TPA plus HDPE blown film grade raw materials.

[0019] TPA 20 parts

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

Embodiment 3

[0026] With reference to Examples 1 and 2, prepare TPA plus HDPE blown film-grade raw materials according to the following proportions of each component and parts by weight.

[0027] 30 parts of TPA

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

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Abstract

The invention discloses a method for preparing a novel alloy film blowing material by chemically depolymerizing and purifying TPA from waste polyester textiles and adding a film blowing grade HDPE material for modification in our plant. The method comprises the following steps: depolymerizing, filtering, decoloring and purifying waste polyester textiles by using glycerol residues heated to 260-280 DEG C to obtain TPA, adding a compatilizer and other modification aids, adding a certain proportion of film blowing grade HDPE material, uniformly mixing the components and performing extrusive granulation on the mixture to obtain the special TPA / HDPE film-blowing alloy new material.

Description

technical field [0001] The invention discloses a method for modifying polyester waste textiles into a new alloy material for blown film by chemically depolymerizing and purifying TPA and blown film 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 blown film through chemical depolymerization, purified TPA and blown film grade HDPE mate...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08K5/092C08J5/18C07C51/09C07C51/42C07C63/26
CPCC07C51/09C07C51/42C08J5/18C08J2323/06C08K5/092C07C63/26
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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