Degradable liquid mulch film and preparation method thereof

A liquid mulch and mixed liquid technology, applied in chemical instruments and methods, building components, applications, etc., can solve the problems of white pollution of soil and environment, low utilization rate, difficult economic promotion, etc., to improve the survival rate of planted trees, reduce Evaporation of water and low production cost

Inactive Publication Date: 2008-09-03
YANGLING MINGRUI CHEM IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the plastic mulch is difficult to decompose in the natural environment, it is scattered in the soil and the natural environment, difficult to degrade, destroys the soil structure, and causes white pollution to the soil and the environment. At the same time, the plastic mulch must be covered and pressed during use. , manual rupture of membranes and release of seedlings, etc., the operation is laborious and time-consuming
Therefore, in recent years, scientists have begun to study automatic degradable mulch films. Chinese Patent Publication No. CN1116635 proposes degradable mulch films. Its main raw materials are polyethylene resins, modified starches, photosensitizers, oxidants, etc. Increase

Method used

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  • Degradable liquid mulch film and preparation method thereof
  • Degradable liquid mulch film and preparation method thereof
  • Degradable liquid mulch film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] 1) Add 3 parts of potassium hydroxide to 15 parts of rapeseed oil, react at 120°C, add 80 parts of water after cooling, heat and stir until viscous, and set aside; 2) Mix 1.0 parts of OP-10, 3 parts Add Tween 85 and 1.0 parts of Span to 80 parts of water and stir to make it evenly mixed before use; 3) Heat 300 parts of asphalt to 200°C, turn on the mechanical stirring device, and pour in step 1) at the same time under slow stirring conditions To the prepared product, after stirring for 1 minute, add 10 parts of hot-melted stearyl alcohol, stir for 10 minutes, add the mixed solution prepared in step 2), stir for 5 minutes, and then grind with a colloid mill to obtain a degradable liquid film.

Embodiment 2

[0045] 1) Add 5 parts of potassium hydroxide to 20 parts of rapeseed oil, react at 125°C, add 100 parts of water after cooling, heat and stir until viscous, and set aside; 2) Mix 1.5 parts of OP-10, 6 parts Add Tween 85 and 1.5 parts of Span to 150 parts of water and stir to make it evenly mixed before use; 3) Heat 380 parts of asphalt to 230°C, turn on the mechanical stirring device, and pour in step 1) at the same time under slow stirring conditions To the prepared product, after stirring for 1.5 minutes, add 18 parts of hot-melted stearyl alcohol, stir for 15 minutes, add the mixed solution prepared in step 2), stir for 10 minutes, and then grind with a colloid mill to obtain a degradable liquid film.

Embodiment 3

[0047] 1) Add 10 parts of potassium hydroxide to 25 parts of rapeseed oil, react at 150°C, add 100 parts of water after cooling, heat and stir until viscous, and set aside; 2) Mix 2.5 parts of OP-10, 10 parts Add Tween 85 and 2.5 parts of Span to 60 parts of water and stir to make it evenly mixed before use; 3) Heat 450 parts of asphalt to 260°C, turn on the mechanical stirring device, and pour it into step 1) preparation at the same time under slow stirring conditions In the product, after stirring for 2 minutes, add 25 parts of hot-melted stearyl alcohol, stir for 15 minutes, add the mixed solution prepared in step 2), stir for 10 minutes, and then grind through a colloid mill to obtain a degradable liquid film.

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Abstract

The invention discloses a degradable liquid mulching film, comprising( by weight parts): asphaltum 300-450 parts, oil 15-25 parts, potassium hydroxide 3-10 parts, octadecyl alcohol 10-25 parts, OP-10 1.0-2.5 parts, sapn 80 1.0-2.5 parts, tween 85 3-10 parts, water 150-350 parts. The mulching film solves the pollution problem resulted from polyethylene mulching film used in drought, semiarid lands. The liquid mulching film is formed through spraying by general agricultural sprayer and drying, with function of preservating the soil moisture and heating. The film is broken without human when the plant seed emerges. The mulching film can be automatically degraded into fertilizer after 3-6 months to furnish the plant. The mulching film has great effects that wind proofing and fixing sand, avoiding water and soil loss, reducing the evaporation of water in soil, increasing ground temperature, promoting the growth of the cropper and success ratio of tree.

Description

technical field [0001] The invention belongs to the technical field of producing agricultural mulch, and relates to a liquid mulch, in particular to a degradable liquid mulch and a preparation method thereof. technical background [0002] Cultivation using plastic mulch is one of the widely used agricultural techniques. However, since the plastic mulch is difficult to decompose in the natural environment, it is scattered in the soil and the natural environment, difficult to degrade, destroys the soil structure, and causes white pollution to the soil and the environment. At the same time, the plastic mulch must be covered and pressed during use. , Artificial rupture of membranes and release of seedlings, etc., are laborious and time-consuming to operate. Therefore, in recent years, scientists have begun to study automatic degradable mulch films. Chinese Patent Publication No. CN1116635 proposes degradable mulch films. Its main raw materials are polyethylene resins, modified ...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08K13/02C08J5/18C09K17/52A01G13/02
Inventor 吕殿青于闽
Owner YANGLING MINGRUI CHEM IND TECH
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