Complete biodegradable starch-containing TPU (thermoplastic polyurethane) mulch and preparation method thereof

A completely degradable, starch technology, applied in the direction of plant protection cover, coating, etc., can solve the problems of incomplete solution of environmental protection, poor strength, high starch content, and achieve good degradation time, cost reduction, and high starch content. Effect

Inactive Publication Date: 2014-02-12
DONGGUAN XIONGLIN NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is: in order to solve the shortcomings of the prior art that the starch content of the biodegradable film is high, the strength is poor, and the environmental protection problem cannot be completely solved, the present invention provides a fully degradable starch-containing TPU film, high Starch content, fully degradable, and highly controllable

Method used

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Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0034] A fully degradable starch-containing TPU film is provided, which consists of:

[0035] TPU particles 20-90 parts

[0036] Starch 10-80 parts

[0037] Antioxidant 0.05-2 parts

[0038] UV absorber 0.05-3 parts

[0039] Modified nano additives 0-5 parts

[0040] Environmental plasticizer 0-20 parts

[0041] Calcium stearate 0-3 parts

[0042] Stearic acid 0-2 parts

[0043] Black color masterbatch 0-1 part

[0044] In the above-mentioned fully degradable starch-containing TPU film, the particle size of the starch is 100-1000 mesh starch.

[0045] In the above-mentioned fully degradable starch-containing TPU film, the starch is selected from any one of corn starch, tapioca starch, potato starch, sweet potato starch, lotus root starch, and high amylose starch.

[0046] In the above-mentioned fully degradable starch-containing TPU mulch film, the herbicide can be applied to one side of the degradable starch-containing TPU mulch film.

[0047] In the above-mentioned ...

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Abstract

The invention discloses a complete biodegradable starch-containing TPU (thermoplastic polyurethane) mulch. The complete biodegradable starch-containing TPU mulch comprises the following components in parts by mass: 20-90 parts of TPU particles, 10-80 parts of starch, 0.05-20 parts of antioxidant, 0.05-3 parts of ultraviolet light absorber, 0-5 parts of modified nano auxiliary, 0-20 parts of environmental protection plasticizer, 0-3 parts of calcium stearate, 0-2 parts of stearic acid and 0-0.5 part of black colour masterbatch; the complete biodegradable starch-containing TPU mulch has high starch content, can be completely degraded and is strong in controllability. Besides, herbicide can be coated on one single face of the complete biodegradable starch-containing TPU mulch, and an effect of preventing insect pests can be realized.

Description

technical field [0001] The invention relates to an agricultural mulch film, in particular to a fully degradable starch-containing TPU mulch film and a preparation method thereof. Background technique [0002] Drought is an extremely serious problem in my country's agricultural production. In agricultural production, plastic film mulching can not only maintain soil moisture and improve water use efficiency, but also improve the growth environment of crops, increase crop yield and agricultural benefits, so it is widely used. According to statistics, the annual consumption of agricultural mulch film has reached 1.6 million tons. However, the problem of "white pollution" caused by the waste film produced by the extensive use of agricultural mulch to the agricultural ecological environment is also becoming more and more serious. This is because the vast majority of common agricultural mulch films are currently made of polypropylene, polyethylene, etc., which cannot be eroded an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/04C08L3/02C08J7/04A01G13/02
Inventor 何建雄
Owner DONGGUAN XIONGLIN NEW MATERIAL TECH
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