Degradable soil moisture preserving liquid film and its prepn

A technology of liquid film and soil, applied in the direction of soil conditioning materials, chemical instruments and methods, applications, etc., can solve the problems of poor storage, poor processing performance, and inability to combine the land surface into one body, and achieve the effect of simple and easy to use

Inactive Publication Date: 2002-07-10
北京中宣绿环科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0002] At present, the mulch commonly used in agriculture is made of non-degradable materials, and its large-scale application has caused incalculable harm to our precious land resources; many people have tried degradable plastics to produce mulch, but Due to its low strength and poor processing performance, it cannot be processed to the thickness of the existing PVC film. Even if it can be made into a product that meets the thickness of the film, it cannot be

Method used

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Examples

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Embodiment Construction

[0017] Below in conjunction with specific embodiment is described further, degradable soil moisture retention liquid film of the present invention is made of following raw material: (weight unit KG)

[0018] (1) Vinyl acetate 4 hydroxybutyrate 1 hydroxyvalerate 1

[0019] Modified starch 3 calcium carbonate 3 water 88

[0020] (2) Vinyl acetate 10 hydroxybutyrate 3 hydroxyvalerate 3

[0021] Modified starch 8 calcium carbonate 8 water 120

[0022] (3) Vinyl acetate 5 hydroxybutyrate 1.5 hydroxyvalerate 1.5

[0023] Modified starch 4 calcium carbonate 4 water 100

[0024] (4) Vinyl acetate 7 hydroxybutyrate 2.5 hydroxyvalerate 2.5

[0025] Modified starch 6 Calcium carbonate 6 The water of 85% of the total weight of the aforementioned raw materials

[0026] Its manufacturing method is as follows: the first three raw materials are used to make a resin, and then the resin is made into an aqueous solution under indirect heating at 80-100 ° C, and after cooling, it is mixed wi...

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PUM

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Abstract

The degradable soil moisture preserving liquid film material is prepared by using the material including vinyl acetate, hydroxyl butyrate, hydroxyl valerate, modified starch, calcium carbonate and water. It may degraded completely in natural condition. When spread, it forms thin film adhered to soil and the has excellent heat and moisture preserving effect.

Description

Technical field: [0001] The invention relates to a plastic film used for soil moisture conservation and heat preservation, in particular to a degradable liquid soil moisture conservation membrane and a preparation method thereof. technical background: [0002] At present, the mulch commonly used in agriculture is made of non-degradable materials, and its large-scale application has caused incalculable harm to our precious land resources; many people have tried degradable plastics to produce mulch, but Due to its low strength and poor processability, it cannot be processed to the thickness of the existing PVC mulch film. Even if it can be made into a product that meets the thickness of the mulch film, it cannot be really applied because of its low strength and poor storability. Due to the limitation of the width of the equipment, the existing mulch cannot be made infinitely wide, and there will always be seams in the paving, which cannot achieve full coverage in the true sens...

Claims

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Application Information

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IPC IPC(8): C08L31/04C09K17/20C09K17/52
Inventor 赵海宴顾品忠黄秀娟
Owner 北京中宣绿环科技发展有限公司
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