Method for modification via both extrusion-grade PA66 and PET prepared from waste polyester textiles through depolymerization, purification and polymerization

A PA66, polyester technology, applied in the field of new materials for alloy extrusion, can solve the problems of inability to directly reprocess, waste of land resources, secondary pollution, landfill or incineration, 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 modification via both extrusion-grade PA66 and PET prepared from waste polyester textiles through depolymerization, purification and polymerization
  • Method for modification via both extrusion-grade PA66 and PET prepared from waste polyester textiles through depolymerization, purification and polymerization
  • Method for modification via both extrusion-grade PA66 and PET prepared from waste polyester textiles through depolymerization, purification and polymerization

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method of chemically depolymerizing and purifying polymerized PET with polyester waste textiles according to the present invention, and PA66 extruded material, modified into an alloy material method is implemented according to the following process procedures:

[0010] Depolymerize waste polyester textiles with glycerin residue heated to 260-280 degrees, filter the dregs in the solution, decolorize and purify to obtain liquid PET. Prepare PET and PA66 extrusion grade raw materials according to the following parts by weight.

[0011] PET 55 copies

[0012] PA66 4 copies

[0013] Compatibilizer 5 parts

[0014] Test results

[0015]

[0016] The above-mentioned prepared components and parts by weight are mixed, extruded and granulated, and a new alloy material of PET and PA66 extrusion grade 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 PET and PA66 extrusion grade raw materials.

[0019] PET 60 copies

[0020] PA66 35 copies

[0021] Compatibilizer 5 parts

[0022] Test results

[0023]

[0024] The above-mentioned prepared components and parts by weight are mixed, extruded and granulated, and a new alloy material of PET and PA66 extrusion grade is obtained.

Embodiment 3

[0026] Referring to Examples 1 and 2, PET and PA66 extrusion grade raw materials were prepared with each component and parts by weight in the following proportions.

[0027] PET 45 parts

[0028] PA66 50 copies

[0029] Compatibilizer 5 parts

[0030] Test results

[0031]

[0032] The above-mentioned prepared components and parts by weight are mixed, extruded and granulated, and a new alloy material of PET and PA66 extrusion grade is obtained.

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Abstract

The invention discloses a method for modifying both an extrusion-grade PA66 material and PET prepared from waste polyester textiles through chemical depolymerization, purification and polymerization so as to prepare a novel extruded alloy material. The method comprises the following steps: subjecting waste polyester textiles to depolymerization, filtration, decolorization and purification with glycerin residues having been heated to 260-280 DEG C, then performing polymerization to form PET, adding a compatibilizer and other additives, then adding a certain proportion of an extrusion-grade PA66 material, carrying out uniform mixing and then performing extrusion and granulation to obtain the novel special PET-PA66 extruded alloy material.

Description

technical field [0001] The invention discloses a method of using polyester waste textiles to chemically depolymerize, purify, polymerize into PET, and modify it with PA66 extrusion material to form a new material for alloy extrusion. [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 PET and extrusion-grade PA66 materials obtained by chemical depolymerization, purification and polymerization of polyester waste spinning are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L77/06C08J11/24
CPCC08J11/24C08J2367/02C08L67/02C08L77/06Y02W30/62
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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