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Drawing process and application of starch degradable plastics

A technology for degrading plastics and starches, which is applied in the fields of filament molding, textile and papermaking, melt spinning, etc. It can solve the problems of poor processing performance, short life, and difficulty in large-scale application, so as to improve processing performance and strengthen machinery. Performance, the effect of improving the pulling performance

Active Publication Date: 2015-03-25
DONGGUAN FANGZHONG SPORT PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the production process of starch-degradable plastics is very mature. However, the strength, stretchability and light transmittance of starch-degradable plastics are poor, and the degradation time is difficult to control, and the life is short. Due to poor processability, it is difficult to draw For further processing into silk, due to the above-mentioned defects in the existing starch-degradable plastics, it is difficult to apply them on a large scale

Method used

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  • Drawing process and application of starch degradable plastics

Examples

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Comparison scheme
Effect test

Embodiment 1

[0016] A wire drawing process of starch degradable plastic, comprising the following steps:

[0017] 1) at first weigh respectively the starch degradable plastics of 90% by weight, the isocyanate compatibilizer of 0.5% and the acrylic acid auxiliary of 9.5% by weight, the above-mentioned starch degradable plastics, isocyanate compatibilizers are weighed respectively. and acrylic additives at 40 ℃ and stir evenly;

[0018] 2) Heat the uniformly stirred material in step 1 into a single-screw extruder, and extrude monofilament or flat filament at 120°C.

[0019] Among them, compatibilizers and additives make the chemical bonds of starch degradable plastics form double bonds, and the double bonds between molecules are polymerized to strengthen the connection between molecular chains, which is conducive to the longitudinal arrangement between molecular chains, thereby improving the degradation of starch. The tensile properties, strength and flexibility of plastics enhance their me...

Embodiment 2

[0021] A wire drawing process of starch degradable plastic, comprising the following steps:

[0022] 1) at first weigh respectively 99% by weight of starch degradable plastics, 0.5% by weight of titanate compatibilizer and 0.5% by weight of acetyl acrylic acid auxiliary, the above-mentioned starch degradable plastics, titanium The ester compatibilizer and acetyl acrylic acid auxiliary are stirred evenly at 70°C;

[0023] 2) Heat the uniformly stirred material in step 1 into a single-screw extruder, and extrude monofilament or flat filament at 220°C.

Embodiment 3

[0025] A wire drawing process of starch degradable plastic, comprising the following steps:

[0026] 1) first take by weighing the starch degradable plastics that the weight percentage is 80%, the methyl acrylate compatibilizer that the weight percentage is 10% and the polyester acrylic auxiliary agent that the weight percentage is 10% respectively, the above-mentioned starch degradable plastics, Methyl acrylate compatibilizer and polyester acrylic auxiliary agent are stirred evenly at 50°C;

[0027] 2) Heat the uniformly stirred material in step 1 into a single-screw extruder, and extrude monofilament or flat filament at 180°C.

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Abstract

The invention relates to the technical field of degradable plastics and an application of the degradable plastics, and in particular relates to a drawing process and application of the starch degradable plastics. The process comprises the following steps of 1) respectively weighing 80-99 percent by weight of starch degradable plastics, 0.5-10 percent by weight of ester compatilizers and 0.5-10 percent by weight of aids-acrylic assistants, and uniformly stirring the starch degradable plastics, the ester compatilizers and the aids-acrylic assistants at the temperature of 40-70 DEG C; 2) adding the materials which are stirred uniformly in the step 1 in a single-screw extruding machine, and extruding monofilaments or ribbon-like filaments at the temperature of 120-220 DEG C. Compared with the prior art, the drawing process of the starch degradable plastics has the advantages that the starch degradable plastics can be drawn into filaments, and the filaments are high in flexibility, high in intensity, high in tensile strength and high in mechanical performance; the processing performance of the materials can be obviously improved; the drawn filaments can be widely applied to the fields of silk ribbons, threads, nets, braids, luggage, handbag cloth or curtains and the like and have wide application.

Description

technical field [0001] The invention relates to the technical field of degradable plastic and its application, in particular to a drawing process of starch degradable plastic and its application. Background technique [0002] Plastics bring various conveniences to people's daily life, but because organic polymers are difficult to degrade, causing serious pollution, the "white pollution" of plastics threatens the ecological environment and is a worldwide problem. The emergence of environmentally friendly degradable plastics has pointed out the development direction for the future plastics industry. [0003] At present, the production process of starch degradable plastics is very mature. However, the strength, stretchability and light transmittance of starch degradable plastics are all poor, and the degradation time is difficult to control and the life is short. Due to poor processing performance, it is difficult to pull For further processing into filaments, it is difficult ...

Claims

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Application Information

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IPC IPC(8): B29C47/00C08L3/02C08K5/205
CPCC08K5/09C08K5/10C08K5/101C08K5/29C08L2201/06D01D1/00D01D5/08C08L3/02
Inventor 赵奎
Owner DONGGUAN FANGZHONG SPORT PROD
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