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Method for performing depolymerization, purification of TPA (terephthalic acid) and hollow LLDPE (linear low density polyethylene) modification on polyester waste textiles

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

Inactive Publication Date: 2019-09-13
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 performing depolymerization, purification of TPA (terephthalic acid) and hollow LLDPE (linear low density polyethylene) modification on polyester waste textiles
  • Method for performing depolymerization, purification of TPA (terephthalic acid) and hollow LLDPE (linear low density polyethylene) modification on polyester waste textiles
  • Method for performing depolymerization, purification of TPA (terephthalic acid) and hollow LLDPE (linear low density polyethylene) modification on polyester waste textiles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method of purifying TPA by chemical depolymerization of polyester waste textiles according to the present invention, adding hollow blow molding grade LLDPE material, and modifying it into a special alloy material for hollow 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 LLDPE hollow blow molding grade raw materials in the following parts by weight.

[0011] TPA 10 parts

[0012] Hollow blow molding 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 hollow blow molding grade alloy material is obtained.

Embodiment 2

[0019] TPA 20 parts

[0020] Hollow blow molding 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 hollow blow molding grade alloy material is obtained.

Embodiment 3

[0027] 30 parts of TPA

[0028] Hollow blow molding 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 hollow blow molding grade alloy material is obtained.

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PUM

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Abstract

The invention discloses a method for modifying polyester waste textiles into new alloy materials special for hollow blow molding by performing chemical depolymerization and purification of TPA (terephthalic acid) and adding hollow blow molding grade LLDPE (linear low density polyethylene) materials. The method comprises the following steps: performing depolymerization, filtration, decoloration andpurification on the polyester waste textiles with glycerin residues heated to a temperature of 260-280 DEG C so as to obtain TPA, adding a compatilizer and other modification agents, adding hollow blow molding grade LLDPE materials of a certain ratio to be uniformly mixed, and performing extruded granulation so as to obtain the TPA / LLDPE new alloy material special for hollow blow molding.

Description

[0001] The invention discloses a method for modifying polyester waste textiles into a special alloy material for hollow blow molding by chemically depolymerizing and purifying TPA and adding hollow blow molding 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 special alloy material for hollow blow molding through chemical depolymerization, purification of TPA...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/08C08K5/092C07C51/09C07C51/42C07C63/26
CPCC07C51/09C07C51/42C08K5/092C07C63/26C08L23/0815
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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