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A high-strength multi-layer composite structure agricultural mulch film and its preparation method

A multi-layer composite, agricultural mulching film technology, applied in the directions of botanical equipment and methods, chemical instruments and methods, applications, etc., can solve the problems of poor stretching, tearing and other properties, affecting service life, slow growth of crops, etc. Achieve the effect of good reflection, high tensile strength and obvious soil cooling effect

Active Publication Date: 2021-02-26
YUNNAN QUJING PLASTICS GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when used in low-temperature season areas, the blocking of light not only weeds, but also prevents the light from directly irradiating the soil, resulting in low ground temperature, which leads to slow growth of crops, late maturity, and low yield.
[0004] In addition, since the additives such as antioxidants, anti-aging agents, and stabilizers added in the process of preparing the mulch film are relatively polar, and are also easy to agglomerate, it is not easy to disperse well in polymers with low polarity such as polyethylene. , leading to the presence of agglomerated additives inside the obtained mulch polymer, forming stress concentration points, making the mulch unstable, stretching, tearing and other properties deteriorated, and affecting its service life

Method used

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  • A high-strength multi-layer composite structure agricultural mulch film and its preparation method
  • A high-strength multi-layer composite structure agricultural mulch film and its preparation method
  • A high-strength multi-layer composite structure agricultural mulch film and its preparation method

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preparation example Construction

[0033] The raw materials for the preparation of the silver-gray mulch layer, in parts by weight, include

[0034]

[0035]The linear low-density polyethylene described in the present invention is ethylene as the main raw material, and a small amount of α-olefins (such as butene-1, octene-1, etc.) are obtained by gas-phase fluidized bed polymerization under high pressure or low pressure under the action of a catalyst polymers, wherein the catalyst does not include metallocene catalysts, that is, in the present invention, unless otherwise specifically emphasized, the "linear low-density polyethylene" refers to linear low-density polyethylene excluding metallocene polyethylene . Compared with conventional polyethylene, linear low-density polyethylene has a small amount of short-chain branches on the molecular chain, and has a higher degree of linearity, so it has a more regular molecular arrangement, greater crystallinity and heat resistance.

[0036] In some embodiments, the...

Embodiment 1

[0060] Embodiment 1 provides a kind of high-strength multilayer composite structure agricultural mulching film, including silver-gray mulching layer and black mulching layer; The preparation raw material of described black mulching layer, by weight part, comprises:

[0061]

[0062]

[0063] The raw materials for the preparation of the silver-gray mulch layer, in parts by weight, include

[0064]

[0065] Described linear low-density polyethylene is the product (melt index is 2.0g / 10min, and density is 0.918g / cm2) that ExxonMobil brand is LL1002 3 ); the polyethylene-based high-performance polymer is Exceed XP series product of Exxon Mobil Corporation, which is XP6026ML (density is 0.916g / m 3, melt index is 0.2g / 10min); the long-life masterbatch is prepared by resin carrier, anti-aging agent and functional auxiliary agent; the resin carrier is obtained by blending low-density polyethylene and ethylene-vinyl acetate copolymer, which The weight ratio is 3.6:1; the ethy...

Embodiment 2

[0071] Embodiment 2 provides a kind of high-strength multilayer composite structure agricultural mulching film, including silver-gray mulching layer and black mulching layer; The preparation raw material of described black mulching layer, by weight, comprises:

[0072]

[0073] The raw materials for the preparation of the silver-gray mulch layer, in parts by weight, include

[0074]

[0075] Described linear low density polyethylene is the product (melt index is 2.0g / 10min, and density is 0.918g / cm 3 ); the polyethylene-based high-performance polymer is a product of Exceed XP series brand of Exxon Mobil Corporation, which is XP6026ML; the long-life masterbatch is prepared from a resin carrier, an anti-aging agent and a functional auxiliary agent; the resin carrier is made of Low-density polyethylene and ethylene-vinyl acetate copolymer are blended, and the weight ratio is 5:1; the ethylene-vinyl acetate copolymer is ExxonMobil brand ethylene-vinyl acetate copolymer (VA c...

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Abstract

The invention relates to the technical field of agricultural plastic products, in particular to a high-strength multi-layer composite structure agricultural mulch film and a preparation method thereof. A high-strength multi-layer composite structure agricultural film provided by the present invention includes a silver-gray film layer and a black film layer; the preparation materials of the silver-gray film layer and the black film layer both include longevity masterbatch and polyethylene-based high-performance polymer material, and excellent aging resistance; excellent mechanical properties: high tensile strength, wear resistance and puncture resistance; excellent low temperature resistance, low temperature does not embrittle; can realize mechanized operation into rolls and recycle, terminate from the source The "white pollution" of farmland restores the original ecology of farmland and realizes the concept of agricultural health, environmental protection and sustainable development.

Description

technical field [0001] The invention relates to the technical field of agricultural plastic products, in particular to a high-strength multi-layer composite structure agricultural mulch film and a preparation method thereof. Background technique [0002] Plastic agricultural mulch has the effect of retaining moisture and increasing temperature on the soil, and then brings increased production and harvest to agriculture. It has been hailed as the third revolution in agriculture after the collection of chemical fertilizers and seeds in my country. my country is the country that uses the most polyethylene mulch every year. It is mainly used in crops such as tobacco, cotton, corn, and vegetables. Polyethylene mulch has brought huge benefits to agriculture, but it has also brought serious "white pollution" to the ecological environment. In addition, due to the uneven distribution of water resources in my country in terms of time and space, crops in some areas are often affected b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/02B32B27/06B32B27/32B32B27/18C08L23/08C08L23/06C08J5/18C08J3/22B29D7/01
CPCA01G13/0275B29D7/01B32B27/08B32B27/18B32B27/32C08J3/22C08J5/18C08J2323/08C08J2423/06
Inventor 卢斌卢建书汤云安王建桥王宗方
Owner YUNNAN QUJING PLASTICS GROUP
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