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

A PA66 and polyester technology, applied in the field of new materials for alloy injection molding, can solve the problems of waste of land resources, secondary pollution, landfill or incineration, and inability to directly reprocess

Inactive Publication Date: 2019-09-20
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 injection-grade PA66 and PET prepared from waste polyester textiles through depolymerization, purification and polymerization
  • Method for modification via both injection-grade PA66 and PET prepared from waste polyester textiles through depolymerization, purification and polymerization
  • Method for modification via both injection-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 polyester waste and old textiles according to the present invention, adding PA66 injection molding material, and modifying it into an alloy material is carried out 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 plus PA66 injection molding grade raw materials in the following parts by weight.

[0011] PET 60 copies

[0012] PA66 35 copies

[0013] Compatibilizer 5 parts

[0014] Test results

[0015]

[0016] The components prepared above and their parts by weight are mixed evenly, extruded and granulated, and a new material of injection molding grade alloy of PET plus PA66 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 plus PA66 injection molding grade raw materials.

[0019] PET 55 copies

[0020] PA6 40 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 material of PET and PA66 injection molding grade alloy is obtained.

Embodiment 3

[0026] Referring to Examples 1 and 2, each component and parts by weight were prepared according to the following proportions to prepare PET plus PA66 injection molding grade raw materials.

[0027] PET 50 copies

[0028] PA6 45 copies

[0029] Compatibilizer 5 parts

[0030] Test results

[0031]

[0032] The components prepared above and their parts by weight are mixed evenly, extruded and granulated, and a new material of injection molding grade alloy of PET plus PA66 is obtained.

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Abstract

The invention discloses a method for modifying both an injection-grade PA66 material and PET prepared from waste polyester textiles through chemical depolymerization, purification and polymerization so as to prepare a novel injection-molded 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 injection-grade PA66 material, carrying out uniform mixing and then performing extrusion and granulation to obtain the novel special PET-PA66 injection-molded alloy material.

Description

technical field [0001] The invention discloses a method of using polyester waste textiles, adopting chemical depolymerization, purification and polymerization to form PET, and adding PA66 injection plastic to modify it into a new material for alloy injection molding. [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 plus injection molding grade PA66 material formed by chemical depolymerization, purification and polyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L77/06
CPCC08L67/02C08L2207/20C08L77/06
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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