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

Heat-insulation water-control degradable mulch preparation method

A technology for degrading mulch and heat preservation, applied in botany equipment and methods, plant protection, plant protection covers, etc., can solve the problems of low degradation rate and untargeted production and preparation methods, achieve high degradation rate and improve overall mechanical properties Effect

Active Publication Date: 2017-10-17
成都硕谷农业科技有限公司
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems of low degradation rate and non-targeted production and preparation methods in the above prior art, the present invention proposes a method of blowing film using a blend of carbonate and polylactic acid to produce a degradable mulch film for thermal insulation and water control. Preparation

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
  • Heat-insulation water-control degradable mulch preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0028] This embodiment discloses a method for preparing a degradable film for heat preservation and water control, the steps of which include:

[0029] 1. Selection of raw materials and pretreatment

[0030] First select raw materials according to mass fraction:

[0031] Polylactic acid 20%-40%;

[0032] Polycarbonate 25-30%;

[0033] Polyethylene adipate 20-35%;

[0034] Grafted compatibilizer 15-18%.

[0035] All raw materials are dried first to avoid poor quality of subsequent granulation caused by excessive moisture. Then put the dried polylactic acid and polycarbonate into vacuum drying equipment respectively, and carry out secondary baking at 76° C. for 17 hours, in order to improve the compatibility during subsequent melt copolymerization.

[0036] 2. Stir and mix the raw materials

[0037] Then the baked polylactic acid is taken out, and the prepared polyethylene adipate, grafted compatibilizer and polylactic acid are mixed, put into a high-speed mixer and stirre...

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 discloses a heat-insulation water-control degradable mulch preparation method. The method includes steps: 1) selecting raw materials including polylactic acid, polycarbonate, polyethyleneglycol adipate and a grafting compatibilizer according to mass fractions; 2) subjecting polylactic acid and polycarbonate to step-by-step baking in a vacuum environment; 3) stirring polylactic acid, polyethyleneglycol adipate and the grafting compatibilizer in a stirrer according to a weight ratio; 4) subjecting well mixed raw materials to primary melt copolymerization in a melt granulator; 5) well stirring particles of a product A and baked polycarbonate in the stirrer, and subjecting to secondary melt copolymerization in the melt granulator; 6) transferring particles of a product B to a film blowing machine for film blowing to obtain a mulch; 7) subjecting a prepared mulch product to strength detection. The prepared mulch is high in degradation rate, high in integral mechanical performance and great in water retaining property.

Description

technical field [0001] The invention belongs to the field of chemical methods, and in particular relates to a preparation method of a degradable plastic film for heat preservation and water control. Background technique [0002] The use of agricultural mulch film reaches more than 1 million tons per year, and is continuing to develop at a relatively high speed. However, while the use of plastic film has brought huge economic benefits to the society, it has also brought serious "white pollution". When the plastic film covering cultivation technology is becoming more and more perfect, the problem of residual film pollution must be solved, so that all functions of plastic film cultivation can be fully realized. Give full play to improve crop production conditions and increase crop yield in a larger space. In order to solve the "white pollution" problem caused by ordinary mulch, scientists proposed the concept of degradable plastics. The use of degradable plastic film is an ef...

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): C08L67/04C08L69/00C08L67/02C08L23/08A01G13/02B29C55/28
CPCA01G13/0275B29C55/28C08J5/18C08J2367/02C08J2367/04C08J2369/00C08J2423/08C08L67/02C08L67/04C08L69/00C08L2201/06C08L2203/16C08L2205/08C08L23/0869
Inventor 吴艳蓉杜德新
Owner 成都硕谷农业科技有限公司
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