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Powder for liquid biodegradable mulch film and preparation method

A biodegradable, powder-based technology, applied in botany equipment and methods, applications, plant protection, etc., can solve the problems of inconvenient storage and transportation of liquid mulch, easy blockage of spraying device flow channels, difficulty in storage of liquid mulch, etc., to achieve the source of raw materials Convenience, simple and reliable process, and the effect of preventing water evaporation

Active Publication Date: 2018-06-01
极塑材料科技(东莞)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the inconvenience of storage and transportation of the current liquid mulch, and the film-forming agent in the raw material components makes the viscosity of the liquid mulch relatively high, which is easy to block the flow channel of the spraying device, the present invention proposes a powder for liquid biodegradable mulch, The powder improves the defects of difficult storage and inconvenient transportation of liquid mulch, and provides a guarantee for the industrial development of liquid mulch production; it can be directly transferred to water when used, which is very convenient to use

Method used

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  • Powder for liquid biodegradable mulch film and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] (1) Mix 40 parts of alginic acid, 5 parts of calcium acetate, 9 parts of gluconolactone, 20 parts of wood fiber, and 5 parts of polyacrylamide in parts by weight to obtain a film-forming material; mix 3 parts of bentonite and 0.2 parts of water Evenly, the bentonite is moistened to form small granular bentonite; then the small granular bentonite is added to the film-forming material, after mixing, sieve through a rotary sieve, and form spherical particles through the bonding of bentonite;

[0029] (2) Put the spherical particles obtained in step (1) into the fluidized bed, set the temperature of the fluidized bed to 60°C, and the air inlet speed to 40m 3 / h, 10 parts by weight of urea are added to the fluidized bed in batches within 5 minutes, and then the fluidization time is kept for 5 minutes. In the fluidized bed, the urea is melted and wrapped on the surface of spherical particles, and a liquid for use in liquid is obtained after cooling. Powder for biodegradable m...

Embodiment 2

[0031] (1) Mix 50 parts of alginic acid, 8 parts of calcium chloride, 10 parts of gluconolactone, 25 parts of wood fiber and 6 parts of polyacrylamide in parts by weight to obtain a film-forming material; mix 4 parts of bentonite and 0.1 part of water Mix evenly to moisten the bentonite to form small granular bentonite; then add small granular bentonite to the film-forming material, after mixing, sieve through a rotary sieve, and form spherical particles through the bonding of bentonite;

[0032] (2) Put the spherical particles obtained in step (1) into the fluidized bed, set the temperature of the fluidized bed to 60°C, and the air inlet speed to 50m 3 / h, 10 parts by weight of urea are added to the fluidized bed in batches within 5 minutes, and then the fluidization time is kept for 6 minutes. In the fluidized bed, urea is melted and wrapped on the surface of spherical particles, and after cooling, a liquid for use in a liquid state is obtained. Powder for biodegradable mulc...

Embodiment 3

[0034] (1) Mix 55 parts of alginic acid, 5 parts of calcium gluconate, 9 parts of gluconolactone, 35 parts of wood fiber and 10 parts of polyacrylamide in parts by weight to obtain a film-forming material; mix 5 parts of bentonite and 1 part of water Mix evenly to moisten the bentonite to form small granular bentonite; then add small granular bentonite to the film-forming material, after mixing, sieve through a rotary sieve, and form spherical particles through the bonding of bentonite;

[0035] (2) Put the spherical particles obtained in step (1) into the fluidized bed, set the temperature of the fluidized bed to 60°C, and the air inlet speed to 60m3 / h, 15 parts by weight of urea are added to the fluidized bed in batches within 5 minutes, and then the fluidization time is kept for 8 minutes. In the fluidized bed, the urea is melted and wrapped on the surface of spherical particles, and a liquid for use in liquid is obtained after cooling. Powder for biodegradable mulch.

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Abstract

The invention provides a powder for a liquid biodegradable mulch film and a preparation method of the powder for the liquid biodegradable mulch film. Humid bentonite is used as a binder, a film-forming material is in advance bonded into spherical particles, and then the surfaces of the particles are wrapped with urea to obtain the powder. The powder effectively prevents bonding and agglomeration and is prepared with water while used, thereby being capable of rapidly dissolving into a liquid state for use in the liquid biodegradable mulch film. The remarkable effects of the process are that thepreparation is in the form of powder to improve the difficulties of storage and the defect of transportation inconvenience of the liquid plastic film so as to provide a guarantee for the industrialization development of the liquid mulch film production, wherein alginate used as the film-forming material plays a role of sustained release to adjust the cross-linking speed of macromolecules so as toprevent spraying equipment from being blocked.

Description

technical field [0001] The invention relates to the technical field of soil environment protection, in particular to a powder for liquid biodegradable plastic film and a preparation method. Background technique [0002] Mulch film is used for ground covering to increase soil temperature, maintain soil moisture, maintain soil structure, prevent pests from invading crops and diseases caused by certain microorganisms, etc., and promote plant growth. Mulch film is popularized and applied in 31 provinces, municipalities and autonomous regions across the country. It is used in more than 40 kinds of crops such as grain, cotton, oil, vegetables, melons and fruits, tobacco, sugar, medicine, hemp, tea, forest, etc., which generally increases the yield of crops by 30%-50%, and the value-added by 40%-60%. Farmers welcome. The annual consumption of mulch film in my country exceeds 700,000 tons, and is growing at an accelerated rate of 1.5%. Traditionally used mulch is made of PE and ot...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L5/04C08L97/02C08L33/26C08K13/02C08K5/1545C08K3/34C08K5/21C08J5/18A01G13/02C05G5/00C05G3/00
CPCA01G13/0275C05C9/00C08J5/18C08J2305/04C08J2497/02C08L5/04C08L2203/16C08L2205/03C08L2312/00C05G5/45C08L97/02C08L33/26C08K13/02C08K5/1545C08K3/346C08K5/21
Inventor 陈庆昝航
Owner 极塑材料科技(东莞)有限公司
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