Production process of rapidly biodegradable micro-porous polyester fibers

A biodegradable, polyester fiber technology, applied in the direction of fiber processing, fiber chemical characteristics, single-component polyester rayon, etc., can solve the problems of slow degradation, dense fiber structure, and longer biodegradation time. The effect of accelerating the speed of biodegradation, easy biodegradation, and shortening the degradation cycle

Inactive Publication Date: 2020-06-12
BOJU SHANGHAI ECOLOGICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

lead to longer biodegradation time
[0007] 2. Dense fiber structure problem
This will lead to microbial contact only starting from the surface of the fiber, slowly degrading from the outside to the inside, and the dense structure with high crystallinity also makes it difficult to break the chain forging and reach the microorganisms, making the degradation rate of the microorganisms slow

Method used

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  • Production process of rapidly biodegradable micro-porous polyester fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] (1) Preparation of polymer

[0056] Wherein, the first monomer is terephthalic acid: the second monomer is ethylene glycol: 2 / 1. During the polymerization reaction of the first monomer and the second monomer, a high temperature resistant commercial blowing agent F240B is added. The decomposition temperature of the high-temperature-resistant foaming agent is ≥300°C, and it is released after high-temperature thermal decomposition and nitrogen. Wherein the proportion of foaming agent accounts for 1 / 97 of the whole.

[0057] (2) Perform pre-crystallization treatment on the polymer, and then dry it.

[0058] (3) Send the dried polymer into the spinning screw, and inject the biodegradable additive from the spinning syringe, the biodegradable additive is a kind of biodegradant, biodegradable fiber and The biodegradation agent disclosed in the preparation method is added in an amount of 2% of the total weight of the rapidly biodegradable microporous polyester fiber, and th...

Embodiment 2

[0064] (1) Preparation of polymer

[0065] Wherein, the first monomer is terephthalic acid: the second monomer is ethylene glycol: 3 / 1. During the polymerization reaction of the first monomer and the second monomer, a high-temperature-resistant KGF-1 high-temperature foaming agent is added. The decomposition temperature of the high-temperature-resistant foaming agent is ≥300°C, and it is released after high-temperature thermal decomposition and nitrogen. Wherein the proportion of foaming agent accounts for 1 / 95 of the whole.

[0066] (2) Pre-crystallize the polymer and then dry it.

[0067] (3) Feed the dried polymer into the spinning screw, and inject the biodegradable additive from the spinning syringe. The biodegradable additive is a biodegradable agent, biodegradable fiber and The biodegradation agent disclosed in the preparation method is added in an amount of 5% of the total weight of the rapidly biodegradable microporous polyester fiber. The polyester polymer flui...

Embodiment 3

[0073] (1) Preparation of polymer

[0074] Wherein, the first monomer is terephthalic acid: the second monomer is ethylene glycol: 4 / 1. During the polymerization reaction of the first monomer and the second monomer, a high temperature resistant PMP-1 foaming agent is added. The decomposition temperature of the high-temperature-resistant foaming agent is ≥300°C, and it is released after high-temperature thermal decomposition and nitrogen. Wherein the proportion of foaming agent accounts for 1 / 98 of the whole.

[0075] (2) Pre-crystallize the polymer and then dry it.

[0076] (3) Feed the dried polymer into the spinning screw, and inject biodegradable additives from the spinning syringe, the biodegradable additives include artificially synthesized polycaprolactone, polyvinyl alcohol, aliphatic-aromatic A mixture of family lipids, modified polylactic acid, monosaccharides, and aldohexose, the addition amount is 3% of the total weight of the microporous polyester fiber that i...

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Abstract

The invention discloses a production process of rapidly biodegradable micro-porous polyester fibers. A high-temperature foaming agent and a biodegradable additive are added, the biodegradable additivein the micro-porous polyester fibers is fully dispersed and uniformly distributed in high-temperature foaming and decomposition processes, and meanwhile, the micro-porous polyester fibers become a porous fiber material, so that the micro-porous polyester fibers become fibers with the fully dispersed and uniformly distributed biodegradable additive and the loose structure, the fibers are easy to biodegrade, the biodegradation speed is increased, and the degradation period is doubly shortened.

Description

technical field [0001] The invention relates to the technical field of fiber degradation, in particular to a production process of rapidly biodegradable microporous polyester fibers. Background technique [0002] The use of microorganisms to biodegrade polyester to protect the environment has been researched and applied for many years. The current method is to mix and granulate a certain proportion of biodegradable additives with polyester chips in the production of polyester fibers to form biodegradable additive masterbatches. When spinning polyester fibers, this masterbatch is added to form Make polyester fiber biodegradable polyester fiber. [0003] The biodegradable additive has a certain degree of hydrophilicity, and within a certain period of time, it can cause chain forging hydrolysis of polyester fibers, and in the presence of microorganisms, it can cooperate with microorganisms to decompose polyester fibers into small molecular compounds , to achieve the effect of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/92D01F1/10D01D1/04D01D5/247D01D13/00
CPCD01F6/92D01F1/10D01D13/00D01D1/04D01D5/247
Inventor 余燕平
Owner BOJU SHANGHAI ECOLOGICAL TECH CO LTD
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