Preparation method of liquid covering material for agricultural purposes

A covering material and liquid technology, applied in the direction of starch coating, polyester coating, dextran coating, etc., can solve the problems of poor film-forming effect, mechanical properties and mechanical strength performance need to be strengthened, and achieve less residue and better adhesion Strong, low cost effect

Active Publication Date: 2013-04-03
SHAANXI UNIV OF SCI & TECH
View PDF2 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Natural polymers such as cellulose, starch, lignin and other raw materials are easy to obtain and cheap, and most of them contain hydrophilic groups such as hydroxyl and carboxyl groups, which a

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of liquid covering material for agricultural purposes
  • Preparation method of liquid covering material for agricultural purposes

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1~5

[0016] A kind of preparation method of agricultural liquid covering material of the present invention, comprises the following steps:

[0017] In the first step, 0.01 to 20 parts of polyethylene glycol with a molecular weight of 200 to 20,000 g / mol, 0.01 to 10 parts of diacid, 0.01 to 10 parts of diol, and 0.01 to 1 part of catalyst are mixed at 50 ° C by molar ratio. Stir and react in an oil bath at ~250°C for 0.5 to 10 hours to obtain a complex;

[0018] In the second step, after the compound prepared in the first step is cooled to room temperature, take 0.1-10 parts of the compound in parts by mass, and then add 0.1-20 parts of water-soluble cellulose to the compound, and 0.1-10 parts of the composition Film agent, 0.1-10 parts of surfactant, 0.2-10 parts of plasticizer, 0.1-10 parts of wet strength agent, 0.05-5 parts of stabilizer, 0.1-10 parts of cross-linking agent, 100-1000 parts water, stirred and reacted at 30°C to 100°C for 0.3 to 12 hours;

[0019] In the third s...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention relates to a preparation method of a liquid covering material for agricultural purposes. The method comprises: mixing 0.01-20?parts of polyethylene glycol, 0.01-10?parts of diacid, 0.01-10?parts of diol, and 0.01-1 part of a catalyst by mole ratio, and subjecting the mixture to a stirring reaction in an oil bath of 50DEG C-250DEG C so as to obtain a compound; by mass, taking 0.1-10 parts of the compound, adding 0.1-20 parts of water soluble cellulose, 0.1-10 parts of a membrane-forming agent, 0.1-10 parts of a surfactant, 0.2-10 parts of a plasticizer, 0.1-10 parts of a wet strength agent, 0.05-5 parts of a stabilizer, 0.1-10 parts of a crosslinking agent and 100-1000 parts of water, and subjecting the mixture to a stirring reaction at 30DEG C-100DEG ; then reducing the pressure to remove foams, and conducting cooling to room temperature; and adding water to perform dilution, and carrying out filtration, thus obtaining the liquid covering material. The liquid covering material for agricultural purposes prepared in the invention can disperse or dissolve in water, can coagulate into a membrane after being sprayed in soil and can achieve a good effect. The prepared material has the characteristics of low economic cost, no residue, no toxicity and harmlessness.

Description

technical field [0001] The invention belongs to the technical field of polymer liquid material production, and in particular relates to a preparation method of an agricultural liquid covering material. Background technique [0002] Agricultural liquid mulch, also known as liquid mulch, is a new type of composite material that has a certain viscosity and can form a colloidal film after spraying. It has good water retention capacity, temperature increase and moisture retention, and is biodegradable. The product can be used as organic The use of fertilizer can improve soil composition, improve soil nutrition, increase the stress resistance of crops, have no harmful effects on soil, groundwater quality and environment, and can prevent insects and weeds, and have a certain promotion effect on crop growth. Due to its non-toxic Environmentally friendly, it can improve soil structure, promote crop growth, improve crop quality and yield, so it can be used as a new material to replace...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): C09D189/00C09D105/00C09D105/02C09D103/02C09D129/04C09D123/08C09D129/14C09D133/10C09D133/02C09D167/02C09D101/28C09D101/26C09D105/14C09D7/12A01G13/02
Inventor 张敏许小玲李成涛
Owner SHAANXI UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap