Cellulose based degradable liquid mulch film

A liquid mulch and cellulose-based technology, applied in climate change adaptation, plant protection covers, etc., can solve the problems of narrow area, mulch bonding and fixing water retention, unsatisfactory degradation cycle, difficult to popularize and apply, etc., to achieve strong water absorption , high wet strength, easy to use

Inactive Publication Date: 2009-01-14
HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The products of the two technical solutions are all black liquid films. Due to the use of individual raw materials, the mulch film is not ideal in terms of bonding, fixing, water retention and degradation c...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] 1) Preparation of expanded rice straw fiber

[0015] The rice straw was crushed to 80 mesh, placed in a twin-screw extruder with an aspect ratio of 1:40, the steam flash explosion condition was 5 MPa, and the flash explosion time was 2 minutes to obtain puffed straw fibers.

[0016] 2) Weigh 100g of puffed straw fiber, 50g of cornstarch, 5g of starch acrylate, 25g of polyvinyl alcohol, 10g of triethanolamine, 1g of boric acid, 4g of polyamide-epichlorohydrin resin, tween-801g, 5000g of tap water, and the above raw materials in turn Put it in a reaction kettle and react for 1 hour at 85°C±5°C to obtain a gel-like viscous liquid translucent material, which is directly sprayed on the ridge to form a film in the field.

Embodiment 2

[0018] Weigh 100g of expanded straw fiber, 75g of cornstarch, 1g of starch acrylate, 50g of polyvinyl alcohol, 30g of triethanolamine, 3g of boric acid, 1g of polyamide-epichlorohydrin resin, Tween-806g, 6000g of tap water, and the above raw materials are placed in the In the reaction kettle, after reacting at 85°C for 1 hour, a gel-like viscous liquid translucent material is obtained, and the gel-like viscous liquid translucent material is directly sprayed on the ridge in the field to form a film.

Embodiment 3

[0020] Weigh 100g of expanded straw fiber, 60g of cornstarch, 3g of starch acrylate, 30g of polyvinyl alcohol, 20g of triethanolamine, 5g of boric acid, 2g of polyamide-epichlorohydrin resin, Tween-803g, 5500g of tap water, and the above raw materials are placed in the In the reaction kettle, after reacting for 1 hour at 85°C±5°C, a gel-like viscous liquid translucent material is obtained, and the gel-like viscous liquid translucent material is directly sprayed on the ridge in the field to form a film.

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PUM

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Abstract

The invention discloses cellulose-based degradable liquid mulching film, the liquid mulching film is composed through taking the expanding straw fiber as the main raw material and adding corn starch, acrylic acid starch resin, polyvinyl alcohol, triethanolamine, boric acid, polyamide-epichlorohydrin resin, tween-80 and water, The addition amount respectively comprises by taking the parts by weight of the expanding straw fiber as the basic standard 100 parts of the expanding straw fiber, 50 parts to 75 parts of the corn starch, 1 part to 5 parts of the acrylic acid starch resin, 25 parts to 50 parts of polyvinyl alcohol, 10 parts to 30 parts of the triethanolamine, 1 part to 5 parts of boric acid, 1 part to 4 parts of the polyamide-epichlorohydrin resin, 1 part to 6 parts of the tween-80 and 5000 parts to 6000 parts of the water. After the synergistic agent and the weed killer are added, the mulching film has certain fertilizer efficiency and weed killing function. The cellulose-based degradable liquid mulching film has the advantages that the wet strength is large, and the water retaining performance is good; simultaneously, the cellulose-based degradable liquid mulching film has better biological degradability and slow-release performance to the pasticide and fertilizer, the products can be directly sprayed and covered to form a film on the ridge in the field, the film forming process is simple, the use is convenient, and thecellulose-based degradable liquid mulching film is particularly suitable for being used in the northeastern or northwestern area.

Description

1. Technical field [0001] The invention relates to an agricultural mulch film, in particular to a cellulose-based degradable liquid mulch film. 2. Background technology [0002] Agricultural plastic film mulching technology has a history of nearly 40 years in my country. Due to the remarkable effect of film mulching cultivation on increasing production and income, plastic film mulching technology has become an important part of my country's alpine, arid, semi-arid, low-lying, saline-alkali areas, especially in my country's vast areas. It is an important measure for agricultural drought resistance, water saving and crop production increase in Northwest China and Northeast China. At present, the covered area of ​​plastic film in my country has reached 250 million mu, increasing at a rate of 10 million mu every year, and the total annual use of plastic film has exceeded 450,000 tons, ranking first in the world. [0003] The extensive use of agricultural plastic mulch has result...

Claims

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Application Information

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IPC IPC(8): C08L1/02C08K13/02C08K5/00A01G13/02C08L3/02C08L51/02C08L29/04C08L63/00C08K5/17C08K3/38C08K5/053C08K5/07
CPCY02A40/28
Inventor 曹龙奎周睿
Owner HEILONGJIANG BAYI AGRICULTURAL UNIVERSITY
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