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Method for depolymerizing, purifying and polymerizing PET by using waste polyester textiles and adding injection-molding PA6 for modification

A polyester and modified technology, which is applied in the field of new materials for alloy injection molding, can solve the problems of waste of land resources, secondary pollution, non-reuse, 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

[0002] 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, purifying and polymerizing PET by using waste polyester textiles and adding injection-molding PA6 for modification
  • Method for depolymerizing, purifying and polymerizing PET by using waste polyester textiles and adding injection-molding PA6 for modification
  • Method for depolymerizing, purifying and polymerizing PET by using waste polyester textiles and adding injection-molding PA6 for modification

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] A method of chemically depolymerizing and purifying polymerized PET with polyester waste textiles according to the present invention, adding PA6 injection molding material, and modifying it into an alloy material is carried out according to the following process procedures:

[0009] 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 PA6 injection molding grade raw materials in the following parts by weight.

[0010] PET 70 parts

[0011] PA6 25 copies

[0012] Compatibilizer 5 parts

[0013] Test results

[0014]

[0015] Mix the above-mentioned prepared components and parts by weight, extrude and granulate, and obtain the new material of PET plus PA6 injection molding grade alloy.

Embodiment 2

[0017] Referring to the method of Example 1, each component and parts by weight were prepared in the following proportions to prepare PET plus PA6 injection molding grade raw materials.

[0018] PET 60 parts

[0019] PA6 35 copies

[0020] Compatibilizer 5 parts

[0021] Test results

[0022]

[0023] The above-mentioned prepared components and parts by weight are mixed, extruded and granulated, and a new alloy material of PET and PA6 injection molding grade is obtained.

Embodiment 3

[0025] Referring to Examples 1 and 2, each component and parts by weight were prepared in the following proportions to prepare PET plus PA6 injection molding grade raw materials.

[0026] PET 65 servings

[0027] PA6 30 copies

[0028] Compatibilizer 5 parts

[0029] Test results

[0030]

[0031] Mix the above-mentioned prepared components and parts by weight, extrude and granulate, and obtain the new material of PET plus PA6 injection molding grade alloy.

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Abstract

The invention discloses a method for preparing a novel alloy injection molding material by chemically depolymerizing, purifying and polymerizing PET by using waste polyester textiles in our plant and adding injection-molding PA6 material for modification. The method comprises the following steps: depolymerizing, filtering, decolorizing and purifying waste polyester textiles by using glycerol residues heated to 260-280 DEG C, then polymerizing the material into PET, adding auxiliaries such as a compatilizer, adding injection-molding PA6 material in a certain proportion, uniformly mixing the components and performing extrusive granulation on the mixture to obtain the special PET / PA6 injection molding alloy new 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 PA6 injection plastic to modify it into a new material for alloy injection molding. Background technique [0002] 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 [0003] 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 PA6 material obtained by chemical depolymerization, purification and polymerization...

Claims

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Application Information

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