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Drug-resistant fully biodegradable mulch composition and preparation method thereof

A degradable mulch film and all-biological technology, which is applied in the field of drug-resistant fully biodegradable mulch film composition and its preparation, can solve the problems of phase separation of composite materials and large differences in solubility parameters, etc., and achieve enhanced drug resistance and openness Good and efficient fusion effect

Active Publication Date: 2020-11-10
山东天野生物降解新材料科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, PBAT can be formed through the same processing technology as PLA, so the use of PBAT to toughen and modify PLA has become the choice of many researchers, but studies have shown that the solubility parameters of PLA and PBAT are very different, and the two can be blended directly prone to phase separation of composites

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0030] Below in conjunction with embodiment, the present invention is described further, but does not limit the present invention thereby.

[0031] The grade of polylactic acid in the examples is Revode110, Zhejiang Hisun Biomaterials Co., Ltd., density 1.25±0.05g / cm 3 , melting point 140-155°C.

[0032] The grade of PBAT in the examples is grade TH801, Dongguan Renju Biodegradable Plastic Co., Ltd., melting point 110-120°C, density 1.2-1.28 g / cm 3 .

[0033] The antioxidants are 2,6-di-tert-butyl-4-methylphenol and 2,4,6-tris[2-(2-hydroxy-3-tert-butyl-5-methylphenyl)-4-methyl base-6-tert-butylphenol base]-cyanurate compound, the weight ratio is 1:1; the anti-ultraviolet auxiliary agent is the compound of light stabilizer UV-3853 S and light stabilizer Tinuvin 119, the weight ratio 1:0.3; the drug resistance increasing agent is liquid paraffin.

[0034] Table 1 Formulas of Examples 1-6 of the present invention, kg

[0035] .

[0036] Table 2 Formulas of Examples 7-9 of...

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Abstract

The invention discloses a drug resistance full-biodegradation mulching film composition. The drug resistance full-biodegradation mulching film composition is prepared from the following components inparts by weight: 100 parts of polylactic acid, 50 to 70 parts of polydiethylene / butylene terephthalate (PBAT), 5 to 10 parts of pentaerythritol, 0.1 to 0.5 part of ammonium persulfate, 0.1 to 1 partof an antioxidant, 0.5 to 3 parts of an anti-ultraviolet assistant, and 2 to 10 parts of a drug resistance intensifier. Under the initiation effect of ammonium persulfate, polylactic acid and PBAT aresubjected to cross-linking reaction during extrusion, the molecular weight of a produced composition is increased, the strength is improved, degradation is slow, and the drug resistance is enhanced.

Description

technical field [0001] The invention belongs to the technical field of ground covering films, and specifically relates to a drug-resistant fully biodegradable film composition and a preparation method thereof. Background technique [0002] The use of agricultural ground covering films (hereinafter referred to as mulch films) in a low temperature environment can improve the survival rate of crops, and play a role in accelerating the ripening and increasing production of crops, so it is widely used. The existing technology usually uses polyethylene blow molding to prepare mulch, and polyethylene raw materials are derived from non-renewable resources such as petrochemical industry. With the increasing shortage of petrochemical resources, the long-term supply of mulch raw materials has brought crisis and the cost is getting higher and higher. . Moreover, polyethylene mulch is non-degradable or takes a long time to slowly degrade after use, and usually it will bring white pollut...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L67/00C08L91/06C08K5/00C08K5/053C08J5/18
CPCC08J5/18C08J2367/04C08J2467/02C08J2491/06C08K5/00C08K5/053
Inventor 付宇经宣兆志阎宝林李开磊张鑫科
Owner 山东天野生物降解新材料科技有限公司
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