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Degradable plastic fastener and preparation method thereof

A technology for degrading plastics and fasteners, applied in the field of degradable plastics, can solve serious, inconvenient recycling, environmental pollution and other problems, and achieve good biocompatibility and bioabsorbability

Pending Publication Date: 2020-12-04
GUANGZHOU MITCHELL PLASTIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the plastic needles are disposable items, which are not easy to recycle, and the current plastic needles and nails are non-degradable plastic wastes, which cause more and more serious environmental pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A degradable plastic fastener, which is mainly composed of the following components in terms of mass percentage: polybutylene succinate 85%, polylactic acid 10%, starch 4%, toughening agent 1 %.

[0022] The preparation method of the above-mentioned degradable plastic fastener is as follows: uniformly mix the dried polybutylene succinate, polylactic acid, and starch to obtain a mixture 1; add a toughening agent to the above-mentioned mixture 1 and mix Evenly, mixture 2 is obtained; heat the above mixture 2 to a molten state, and the heating temperature is 150-280°C; inject the above molten mixture 2 into the mold, pressurize, cool and form, and the desired degradable plastic can be obtained For fasteners, the mold temperature is 50-60°C and the pressure is 70-90MPa. The prepared fasteners were landfilled and tested according to the EN13432-2000 inspection standard to obtain degradation data 1.

Embodiment 2

[0024] A degradable plastic fastener, which is mainly composed of the following components in terms of mass percentage: polybutylene succinate 85%, polylactic acid 10%, starch 4%, toughening agent 1 %

[0025] The preparation method is the same as in Example 1. The prepared fasteners were landfilled, tested according to the EN13432-2000 inspection standard, and the degradation data 2 was obtained.

Embodiment 3

[0027] A degradable plastic fastener, which is mainly composed of the following components in terms of mass percentage: 70% polybutylene succinate, 25.5% polylactic acid, 4% starch, and 0.5% toughening agent %.

[0028] The preparation method is the same as in Example 1. The prepared fasteners were landfilled, tested according to the EN13432-2000 inspection standard, and the degradation data 3 was obtained.

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PUM

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Abstract

The invention discloses a degradable plastic fastener and a preparation method thereof. The fastener is mainly prepared from, by mass, 60-90% of polybutylene succinate, 5-45% of polylactic acid, 0.1-5% of starch and 0.1-2% of a flexibilizer. The preparation method comprises the steps of uniformly mixing dried polybutylene succinate, polylactic acid and starch to obtain a mixture I; adding the flexibilizer into the mixture I and uniformly mixing to obtain a mixture II; heating the mixture II to a molten state; and injecting the mixture II in the molten state into a mold, pressurizing, cooling and molding to obtain the required degradable plastic fastener. According to the degradable plastic fastener and the preparation method thereof provided by the invention, the degradable plastic fastener can be finally decomposed into carbon dioxide and water through enzymes in various microorganisms or animals and plants in nature, and has good biocompatibility and bioabsorbability.

Description

technical field [0001] The invention relates to the field of degradable plastics, in particular to a degradable plastic fastener and a preparation method thereof. Background technique [0002] Rubber needles (nails) are divided into nylon rubber needles, washing water rubber needles, standard rubber needles, I-shaped rubber needles, question mark rubber needles, etc. The main materials are TPU or PP, nylon, and are widely used in garment factories and washing plants. , toy factories, etc., are generally used with tag guns or glue needle machines to fasten the product tag and product or similar packaging together to increase the brand recognition of the product. [0003] However, the rubber needle is a disposable product, which is not convenient for recycling, and the current rubber needle and nail are all non-degradable plastic wastes, which cause more and more serious environmental pollution. [0004] The invention application with the application number 202010195373.4 dis...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08L3/02
CPCC08L67/02C08L2205/02C08L2205/03C08L2201/06
Inventor 黄杰
Owner GUANGZHOU MITCHELL PLASTIC