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Degradable synthetic fiber composition, preparation method thereof and product

A technology of synthetic fibers and compositions, applied in the field of degradable synthetic fiber products, can solve problems such as poor degradation effect, and achieve the effects of significant degradation effect, improved utilization rate, and intuitive and reliable results.

Inactive Publication Date: 2016-10-19
THE HONG KONG RES INST OF TEXTILES & APPAREL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The technical problem to be solved by the present invention is to provide a better degradation method for polymers, especially polymers with complex structures, in view of the defects in the prior art that the degradation effect on polymers, especially polymers with complex structures, is not good. Degradable oxidative-biodegradable artificial synthetic fiber composition and its preparation method and product

Method used

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  • Degradable synthetic fiber composition, preparation method thereof and product
  • Degradable synthetic fiber composition, preparation method thereof and product
  • Degradable synthetic fiber composition, preparation method thereof and product

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preparation example Construction

[0063] The present invention also provides a preparation method of the above-mentioned degradable synthetic fiber composition, the steps are: mixing all raw materials such as polymers such as polyester, polyamide or polystyrene, and transition metal salts through a twin-screw mixer, and the molten state Polymer strips are extruded from the die orifice of the head, the strips are solidified, and after cooling, they are cut into pellets. According to actual needs, antioxidants, transition metal salts and polymers can be mixed.

[0064] Specifically, the degradable masterbatch of the degradable synthetic fiber composition of the present invention is prepared by a mixer, and the constant speed of the double screw of the mixer is 50-500 rpm, preferably 100-280 rpm. One or at least two polyvalent transition metal salt powders of the target polymer resin and an appropriate amount of a pro-oxidant are fed into a feeder monitored by a feed system. After mixing, the still molten polyme...

Embodiment 1

[0073] Add polystyrene 100g together with transition metal salt (5g nickel stearate) in the twin-screw mixer, after mixing, the polymer strip in the molten state is extruded from the die hole of the machine head, the strip is solidified, and cooled Then it is cut into pellet form. Wherein, the rotational speed of the twin-screw mixer is 100-280 rpm.

[0074] A film of the degradable synthetic fiber composition was prepared by the aforementioned method, and the film was subjected to ultraviolet treatment for 6 weeks. like Figure 8 As shown, B represents the sample before UV treatment, and A represents the sample after UV treatment. Found through gel permeation chromatography test, the weight average molecular weight (M) of the degradable synthetic fiber composition of the present embodiment w ) was significantly reduced after 6 weeks of UV treatment, indicating that the samples started to degrade after exposure to UV light.

Embodiment 2

[0079] Add 100g of polyester (polyethylene terephthalate) and transition metal salt (3g iron stearate and 1g copper stearate) into the twin-screw mixer, after mixing, the molten polymer strip Extruded through the die orifice of the die, the strips are solidified and cut into pellets after cooling. Wherein, the rotational speed of the twin-screw mixer is 100-280 rpm.

[0080] A film of the degradable synthetic fiber composition was prepared by the aforementioned method, and the film was subjected to ultraviolet treatment for 6 weeks. like Figure 10 As shown, B represents the sample before UV treatment, and A represents the sample after UV treatment. Found through gel permeation chromatography test, the weight average molecular weight (M) of the degradable synthetic fiber composition of the present embodiment w ) was significantly reduced after 6 weeks of UV treatment, indicating that the samples started to degrade after exposure to UV light.

[0081] The following table 1 ...

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Abstract

The invention relates to a degradable synthetic fiber composition, a preparation method thereof and a prepared biodegradable synthetic fiber product. The biodegradable synthetic fiber composition comprises a polymer and two or more transition metal salts dispersed in the polymer; and at least one of the transition metal salts is a polyvalent metal salt. The invention can degrade polyester, polyamide and styrene polymers, and selects more than two transition metal additives to produce synergistic effect, so as to directly improve the utilization rate of ultraviolet and visible light; and oxidation-biodegradation is applied to artificial fiber synthesis for the first time, and the existing equipment can be directly used for commercial production. The formula and method of the invention in particular can be directly applied to the non-woven fabric weaving technology to further reduce environmental pollution caused by wastes.

Description

technical field [0001] The invention relates to a synthetic fiber composition capable of oxidation-biodegradation in the environment, a preparation method thereof and a degradable synthetic fiber product. Background technique [0002] Nowadays, the disposal of synthetic polymers such as plastics, synthetic fibers, etc. is becoming more and more serious because it takes a long time to degrade in nature. [0003] Recently, disposable plastic products such as disposable hygiene, medical supplies, etc. are gradually being produced with degradable materials in order to extend their lifespan by reducing the load on landfills. Aliphatic polyesters and starches or plant fibers can be eventually decomposed by microorganisms into non-humic substances such as CO 2 and methanol. However, plant-based polymers are generally hydrophilic compared to petroleum-based polymers, so their mechanical and thermal properties differ considerably; moreover, starch and starch / synthetic polymer hybri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L25/06C08L67/02C08L77/00C08L77/06C08K5/098C08K3/30
CPCC08K3/30C08L77/06D01F1/10C08K3/10C08K2201/014C08K5/098C08K2201/018C08L25/06C08L67/02C08L77/00D01F6/22D10B2321/121D10B2401/12
Inventor 林子聪吴昊
Owner THE HONG KONG RES INST OF TEXTILES & APPAREL
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