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

A polyester and modified technology, which is used in the field of extrusion special alloy new materials, can solve the problems that cannot be directly reprocessed, cannot be reused, landfill or incinerate, etc.

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 LDPE for modification
  • Method for depolymerizing and purifying TPA by using waste polyester textiles and adding film-blowing LDPE for modification
  • Method for depolymerizing and purifying TPA by using waste polyester textiles and adding film-blowing LDPE 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 extrusion grade LDPE material, and modifying it into a special alloy material for extrusion 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 LDPE extrusion grade raw materials in the following parts by weight.

[0011] TPA 10 parts

[0012] Extrusion grade LDPE 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 / LDPE extrusion-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 LDPE extrusion grade raw materials.

[0019] TPA 20 parts

[0020] Extrusion grade LDPE 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 / LDPE extrusion-grade alloy material is obtained.

Embodiment 3

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

[0027] 30 parts of TPA

[0028] Extrusion grade LDPE 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 / LDPE extrusion-grade alloy material is obtained.

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Abstract

The invention discloses a method for preparing a special alloy new material for extrusion by chemically depolymerizing and purifying TPA and adding an extrusion-grade LDPE material by using waste polyester textiles 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 an extrusion-grade LDPE material in a certain proportion, uniformly mixing the components and performing extrusive granulation on the mixture to obtain the special TPA / LDPE extrusion alloy new material.

Description

technical field [0001] The invention discloses a method for modifying polyester waste textiles into new special alloy materials for extrusion by chemically depolymerizing, purifying TPA and adding extrusion-grade LDPE materials. [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 by chemical depolymerization, purified TPA and extrusion-grade LDPE materials into new extrusion-specific all...

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
CPCC07C51/09C07C51/42C08K5/092C08L2207/066C08L23/06C07C63/26
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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