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A special material for fully biodegradable mulch film that is beneficial to moisture conservation and its preparation method

A technology for degrading mulch and special materials, applied in the field of polymers, can solve problems affecting crop growth and yield, affecting the promotion and application of mulch, and excessive water evaporation loss, etc., to inhibit the growth of weeds, reduce photosynthesis, and improve effective The effect of utilization

Active Publication Date: 2017-07-25
山东天野生物降解新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] With the application of the emerging product of fully biodegradable mulch, it was found that although it solved the problem of white pollution, the water evaporated and lost too quickly after use, and the performance of moisture retention was not good, which affected the growth and yield of crops, which in turn affected the crop. Popularization and application of planting film

Method used

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  • A special material for fully biodegradable mulch film that is beneficial to moisture conservation and its preparation method
  • A special material for fully biodegradable mulch film that is beneficial to moisture conservation and its preparation method
  • A special material for fully biodegradable mulch film that is beneficial to moisture conservation and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] In this example, 750 parts by mass of the first component, 210 parts by mass of the second component and 20 parts by mass of the third component are used as raw materials for preparing agricultural mulch films. Wherein the preparation process of the first component is as follows:

[0047] With the polylactic acid of 200 mass parts, the polyterephthalic acid / butylene adipate copolymer of 800 mass parts, the 1010 type antioxidant of 2.5 mass parts, the UV770 type anti-ultraviolet agent of 5 mass parts, 80 mass parts Parts of tributyl citrate and 2 parts by mass of erucamide were mixed together, stirred at high speed for 10 minutes to make it evenly mixed, and the uniformly mixed material entered the twin-screw granulator, and after melting and blending in the twin-screw granulator Stranding and dicing to obtain the first component. Wherein, tributyl citrate is a plasticizer, and erucamide is an antiblocking agent. The first component reaches the head of the twin-screw g...

Embodiment 2

[0052] The difference between this example and Example 1 lies in that the amount of raw materials used to prepare the first component and the third component is different. Get the polylactic acid of 310 mass parts, the polyterephthalic acid / butylene adipate copolymer of 600 mass parts, the 1010 type antioxidant of 3 mass parts, the UV770 type anti-ultraviolet agent of 3 mass parts, 60 mass parts Parts of tributyl citrate and 4 parts by mass of erucamide were used as raw materials for preparing the first component.

[0053] Take 75 parts by mass of polylactic acid, 5 parts by mass of tributyl citrate and 20 parts by mass of ultrafine carbon black as raw materials for preparing the third component.

Embodiment 3

[0055] The difference between this example and Example 1 lies in that the amount of raw materials used to prepare the first component and the third component is different. Get the polylactic acid of 450 mass parts, the polyterephthalic acid / butylene adipate copolymer of 500 mass parts, the 1010 type antioxidant of 5 mass parts, the UV770 type anti-ultraviolet agent of 2.53 mass parts, 50 mass parts Parts of tributyl citrate and 5 parts by mass of erucamide were used as raw materials for preparing the first component.

[0056] Take 72 parts by mass of polylactic acid, 6 parts by mass of tributyl citrate and 22 parts by mass of ultrafine carbon black as raw materials for preparing the third component.

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Abstract

The invention belongs to the technical field of macromolecules and discloses a special fully-biodegradable mulch film material conducive to soil moisture preservation and a preparation method of the special fully-biodegradable mulch film material. The material comprises a first component and a second component and is characterized in that the second component is an ethylene / ethenol copolymer, and the first component is prepared from, by mass, 200-450 parts of polylactic acid, 500-800 parts of poly(butyleneadipate-co-terephthalate), 2.5-5 parts of an antioxidant, 2.5-5 parts of an anti-ultraviolet agent, 50-80 parts of a plasticizer and 2-5 parts of erucyl amide. By a raw material ratio, a melted material is high in fluidity, excellent film forming property is achieved, products are high in toughness and tensile strength, and thus excellent-performance degradable much films thinner than 10micrometer can be produced; in addition, raw material airtightness is improved, excellent barrier property is achieved, moisture evaporation can be reduced, and a foundation is laid for preparation of the mulch films with excellent moisture preservation performances.

Description

technical field [0001] The invention belongs to the technical field of macromolecules, and in particular relates to a special material for fully biodegradable mulch film which is beneficial to moisture conservation and a preparation method thereof. Background technique [0002] Film-covered planting can increase crop yield by about 30%. In the vast arid areas of northern my country, the advantages of film-covered planting are particularly prominent, making film-covered planting widely popularized. According to statistics, in 2011 my country's plastic film consumption was 1.255 million tons, covering an area of ​​300 million mu; in 2013, the national plastic film consumption was 1.362 million tons, covering a cultivation area of ​​more than 370 million mu; in 2014, the plastic film covering cultivation area was more than 380 million mu, and the annual sales volume 1.428 million tons, and the annual consumption is increasing rapidly. [0003] Most of the currently used mulch f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L67/04C08L23/08C08K13/02C08K5/11C08K5/20C08K3/04B29C47/92B29C48/92
CPCB29C48/92B29C2948/92704C08J5/18C08J2367/02C08J2467/04C08L67/02C08L2201/06C08L2203/16C08L2205/025C08L2205/035C08L67/04C08L23/0861C08K13/02C08K5/11C08K5/20C08K3/04
Inventor 宣兆志阎宝林
Owner 山东天野生物降解新材料科技有限公司
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