Modification method through depolymerization, purification and polymerization of PET from waste polyester textiles and addition of injection-molding ABS

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

Inactive Publication Date: 2019-09-24
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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  • Modification method through depolymerization, purification and polymerization of PET from waste polyester textiles and addition of injection-molding ABS
  • Modification method through depolymerization, purification and polymerization of PET from waste polyester textiles and addition of injection-molding ABS
  • Modification method through depolymerization, purification and polymerization of PET from waste polyester textiles and addition of injection-molding ABS

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0009] A method of chemically depolymerizing, purifying, and polymerizing polyester waste textiles into PET plus injection-molding grade ABS material, and modifying it into a special alloy material for injection molding according to the present invention is implemented 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, purify and polymerize to obtain liquid PET. Prepare PET plus ABS injection grade raw materials in the following parts by weight.

[0011] PET 10 copies

[0012] Injection grade ABS 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 PET / ABS injection molding grade alloy material is obtained.

Embodiment 2

[0019] PET 20 copies

[0020] Injection grade ABS 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 PET / ABS injection molding grade alloy material is obtained.

Embodiment 3

[0027] PET 30 copies

[0028] Injection grade ABS 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 PET / ABS injection molding grade alloy material is obtained.

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PUM

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Abstract

The invention discloses a modification method for preparing a novel special alloy material used for injection molding through chemical depolymerization, purification and polymerization of PET from waste polyester textiles and addition of an injection-molding-grade ABS material in a plant. The method provided by the invention comprises the following steps: heating glycerin residue to 260 to 280 DEG C, then depolymerizing the waste polyester textiles with heated glycerin residue, carrying out filtering, decolorizing and purifying so as to polymerize PET, then adding modifying auxiliary agents like a compatibilizing agent, adding the injection-molding-grade ABS material in a certain proportion, carrying out uniform mixing, and carrying out extrusion granulation so as to obtain the novel special PET/ABS alloy material used for injection molding.

Description

technical field [0001] The invention discloses a method of using polyester waste textiles to chemically depolymerize, purify and polymerize into PET plus injection molding grade ABS material and modify it into a new alloy material for 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 polyester waste spinning is chemically depolymerized, purified, and polymerized into PET plus injection molding grade ABS...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L55/02C08L67/02
CPCC08L55/02C08L67/02
Inventor 邓忠权邓军邓丽
Owner PLASTIC UNION NEW MATERIAL TECH HUBEI
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