A kind of three-layer water retention type environmental biodegradable film and preparation method thereof

A biodegradable and water-retaining technology, which is applied in botany equipment and methods, chemical instruments and methods, layered products, etc., can solve problems such as soil impact, and achieve an effect that is not easy to promote

Inactive Publication Date: 2020-09-29
北京国瑞新源投资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this period, these exist in the soil as a thin film of debris, which adversely affects the soil

Method used

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  • A kind of three-layer water retention type environmental biodegradable film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] A three-layer water-retaining environmental biodegradable film, which includes an upper film, a middle film and a lower film; the upper film

[0031] The film raw materials include the following components: 0.02kg iron stearate, 0.2kg barium stearate, 0.2kg phenyl salicylate, 0.2kg2,6-di-tert-butyl p-cresol, 5kg low-density polyethylene 2426H, 94.38kg linear low density polyethylene 7042;

[0032] The raw materials of the middle layer film include the following components: 0.01kg iron stearate, 0.1kg barium stearate, 0.05kg 2,6-di-tert-butyl p-cresol, 30kg sodium polyacrylate, 69.84kg linear low density polyethylene 7042.

[0033] The raw materials of the lower film include the following components: 0.2kg of iron stearate, 5kg of low-density polyethylene 2426H, and 94.8kg of linear low-density polyethylene 7042.

[0034] A preparation method of a three-layer water-retaining type environmental biodegradable film, comprising the steps of:

[0035] (1) Put the raw materi...

Embodiment 2

[0041] Upper layer: 0.02kg iron stearate, 0.2kg barium stearate, 0.2kg phenyl salicylate, 0.2kg 2,6-di-tert-butyl-p-cresol, 5kg low-density polyethylene 2426H, 94.38kg linear low-density polyethylene Vinyl 7042.

[0042] Middle layer: 0.05kg iron stearate, 0.2kg barium stearate, 0.1kg 2,6-di-tert-butyl-p-cresol, 50kg sodium polyacrylate, 49,65kg linear low density polyethylene 7042.

[0043] Lower layer: 0.2kg iron stearate, 5kg low density polyethylene 2426H, 94.8kg linear low density polyethylene 7042.

[0044] The preparation method of this embodiment is the same as that of Example 1, wherein the thickness of the upper film is 5 microns, the thickness of the middle film is 7 microns, and the thickness of the lower film is 3 microns.

Embodiment 3

[0046] Upper layer: 0.02kg iron stearate, 0.2kg barium stearate, 0.2kg phenyl salicylate, 0.2kg 2,6-di-tert-butyl-p-cresol, 5kg low-density polyethylene 2426H, 94.38kg linear low-density polyethylene Vinyl 7042.

[0047] Middle layer: 0.2kg iron stearate, 0.4kg barium stearate, 0.2kg 2,6-di-tert-butyl-p-cresol, 90kg sodium polyacrylate, 9.2kg linear low density polyethylene 7042.

[0048] Lower layer: 0.2kg iron stearate, 5kg low density polyethylene 2426H, 94.8kg linear low density polyethylene 7042.

[0049] The preparation method of this embodiment is the same as that of Example 1, wherein the thickness of the upper film is 5 microns, the thickness of the middle film is 7 microns, and the thickness of the lower film is 3 microns.

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Abstract

The invention discloses a three-layer water-retention type environmental biodegradable film and a preparation method thereof. An upper layer is prepared from a degradable material with longer degradation latency period, a middle layer is mainly prepared from super-absorbent resin and a degradable material, and a lower layer is prepared from a degradable material with shorter degradation incubationperiod; components of the upper layer, the middle layer and the lower layer are mixed and granulated by a twin-screw extruder respectively, degradable plastic particles for the upper layer, the middle layer and the lower layer are prepared, put in hoppers of three extruders respectively and subjected to film blowing, and the three-layer degradable mulching film is obtained. The super-absorbent resin is adopted as the middle layer, so that film residues obtained after oxidative degradation has water absorption capability, water content of soil is increased, and soil quality is improved.

Description

technical field [0001] The invention relates to the technical field of agricultural mulching, in particular to a three-layer water-retaining environmental biodegradable film and a preparation method thereof. Background technique [0002] Plastic film mulching is one of the key technical measures for dry farming, water-saving agriculture and increasing the growth period of crops. The application of plastic film mulching technology has greatly improved agricultural output and benefits, driven the transformation of agricultural production methods, and promoted a leap in agricultural productivity. However, with the increase of plastic film coverage, traditional plastic film is neither degradable nor recyclable, and the problem of residual film pollution is becoming more and more serious. In order to reduce and eliminate white pollution, various degradable plastic films have been developed. The degradation of degradable plastic film is generally divided into two steps. The fir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B27/08B32B27/32B32B27/20C08L23/08B32B27/28B32B33/00C08L23/06C08L33/26C08K5/00C08K5/098C08K5/134C08K5/13C08K5/39A01G13/02B29B13/06B29B7/00B29B9/06B29B9/16B29C37/00B29C55/28B29C48/92B29C48/08
CPCA01G13/0262B29B7/002B29B9/06B29B9/16B29B13/065B29C37/0092B29C48/92B29C55/28B29C2948/92704B32B27/08B32B27/18B32B27/32B32B2307/716B32B2307/728C08K2201/014C08L23/0815C08L33/02C08L33/26C08L2201/06C08L2203/16C08L2207/066C08L23/06C08K5/00C08K5/098C08K5/1345C08K5/13C08K5/39
Inventor 陆海荣
Owner 北京国瑞新源投资有限公司
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