Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Liquid degradable mulching film produced by utilizing humus product as well as preparation method and application of liquid degradable mulching film

A technology for degrading plastic film and products, applied in the field of solid waste resource utilization, can solve problems such as easy cracking and poor mechanical strength

Pending Publication Date: 2022-07-05
CHINESE RES ACAD OF ENVIRONMENTAL SCI
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Liquid mulch products can be sprayed on the surface of different substrates through high-pressure spray guns, and with the evaporation of water, a solidified film is formed on the surface of the substrate, which plays the role of heat preservation, moisture increase, sand fixation and dust suppression. Poor strength, easy to crack during use

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
  • Liquid degradable mulching film produced by utilizing humus product as well as preparation method and application of liquid degradable mulching film
  • Liquid degradable mulching film produced by utilizing humus product as well as preparation method and application of liquid degradable mulching film
  • Liquid degradable mulching film produced by utilizing humus product as well as preparation method and application of liquid degradable mulching film

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0021] The invention provides a preparation method of a liquid degradable mulch film produced by utilizing a degraded product, comprising the following steps:

[0022] Mixing the decomposing product of rural mixed organic wastes with an alkali extractant, and extracting to obtain a dispersion;

[0023] The dispersion liquid, the film-forming agent, the plasticizer, the cross-linking agent and the reinforcing agent are mixed, and a cross-linking polymerization reaction is carried out to obtain a liquid degradable mulch film.

[0024] Unless otherwise specified, the present invention has no special requirements on the source of the raw materials used for the preparation, and commercially available products well known to those skilled in the art can be used.

[0025] In the present invention, the decomposing product of the rural mixed organic waste is mixed with an alkali extraction agent for extraction.

[0026] The present invention does not specifically limit the source of th...

Embodiment 1

[0057] Using cow dung and wheat straw with a mass ratio of 1:1 as raw materials, fermented for 30 days under the condition of intermittent ventilation at 60°C under Gore membrane coverage to obtain the decomposing product of rural mixed organic waste;

[0058] Take 4.00g of the decomposing product of rural mixed organic waste after air-drying, mechanical sorting, impurity removal, crushing and sieving (60 mesh sieve), add 40mL, 0.01g / mL potassium hydroxide aqueous solution according to the mass ratio of 1:10 , extracted at 90°C with stirring at 400rpm for 120min, cooled to room temperature, adjusted pH to 7 with 2mol / L citric acid solution to obtain a dispersion; weighed 2.80g of sodium alginate, stirred at 400rpm at 90°C Until the sodium alginate is completely dissolved in 66mL of water, after cooling, transfer to the dispersion liquid, stir at 350rpm, add 0.93g glycerol, 0.50g glutaraldehyde, 1.10g sodium carboxymethylcellulose in sequence after 20min interval, and seal the r...

Embodiment 2

[0060] Take 4.00g of the rural mixed organic waste decomposing product (consistent with the preparation process of Example 1) after air-drying, mechanical sorting, impurity removal, crushing and sieving (60 mesh sieve), and add it in a mass ratio of 1:10. 40mL, 0.005g / mL potassium hydroxide aqueous solution, extract 150min at 90°C with stirring at 400rpm, after cooling to room temperature, adjust pH to 7 with 2mol / L citric acid solution to obtain a dispersion; Weigh 2.80g alginic acid Sodium, stir at 400 rpm at 90 °C until sodium alginate is completely dissolved in 66 mL of water, transfer to the dispersion after cooling, stir at 350 rpm, and add 0.5 g of glycerol, 2.0 g of glutaraldehyde, 1.60 g sodium carboxymethyl cellulose, sealed the reaction kettle, heated up to 90° C., carried out cross-linking polymerization reaction at 350 rpm for 2 h, and cooled at room temperature to obtain a liquid degradable plastic film.

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

PropertyMeasurementUnit
Particle sizeaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of solid waste resource utilization, and particularly relates to a liquid degradable mulching film produced by utilizing a humus product as well as a preparation method and application of the liquid degradable mulching film. Rural mixed organic waste humus products are adopted as raw materials, active organic components in the raw materials are extracted through an alkali extracting agent, and then a film-forming agent, a plasticizer, a cross-linking agent and a reinforcing agent are added. The film-forming agent and the active organic component form a stable and dense three-dimensional network macromolecular chain polymer film structure through the cross-linking polymerization effect of the cross-linking agent; plasticizer molecules are inserted among molecular chains of the polymer film structure, so that the acting force among the molecular chains is weakened, the mobility of the molecular chains is increased, and the crystallinity of the molecular chains is reduced, thereby increasing the plasticity of the polymer film structure, adjusting the flexibility of the polymer film structure and improving the mechanical property of the polymer film structure; the reinforcing agent and the polymer form hydrogen bonds and are tightly combined, so that the mechanical property of the polymer membrane structure is improved.

Description

technical field [0001] The invention belongs to the technical field of solid waste resource utilization, and in particular relates to a liquid degradable mulch film produced by utilizing a decomposing product, and a preparation method and application thereof. Background technique [0002] The mixed organic waste in rural areas is mainly straw and livestock and poultry manure, which has a wide range of sources, a high proportion of organic matter (more than 70% of dry matter), a high content of biomass available components (50% to 70%), carbon, nitrogen and phosphorus. Nutrient-rich and perishable. Improper handling will cause serious impact on soil, groundwater and atmospheric environment. Aerobic composting is the main method of resource utilization of mixed organic wastes in rural areas. The decomposition and transformation of organic matter by microorganisms under aerobic conditions can not only eliminate the pollution of organic wastes to the environment, but also conve...

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): C08J5/18C08L97/00C08L1/02C08L5/14C08L5/04C08L1/28C08L5/08C08K5/053C08K5/07A01G13/02C09K17/52C09K17/32
CPCC08J5/18A01G13/0275C09K17/52C09K17/32C08J2397/00C08J2497/00C08J2301/02C08J2401/02C08J2305/14C08J2405/14C08J2305/04C08J2405/04C08J2305/08C08J2405/08C08J2401/28C08K5/053C08K5/07Y02W30/40
Inventor 李鸣晓张军平杨哲侯佳奇陈王觅杨天学叶美灜
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com