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

A kind of photodegradable PE film and preparation method thereof

A technology of photodegradation and photosensitive mother, which is applied in the field of photodegradation PE film and its preparation, can solve the problems of high price, high production cost, and limited degradation speed, and achieve the effects of favorable growth, complete degradation, and rapid degradation

Active Publication Date: 2022-03-01
福建富一锦科技有限公司
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This kind of mulch film mainly relies on biodegradation, the degradation rate is limited, and the fully biodegradable polyester adopts polylactic acid (PLA), polyadipate / butylene terephthalate (PBAT), polybutylene succinate (PBS) and other special polyester materials, the price was originally higher than that of conventional mulch film raw material polyethylene, so the production cost is higher

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
  • A kind of photodegradable PE film and preparation method thereof
  • A kind of photodegradable PE film and preparation method thereof
  • A kind of photodegradable PE film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Prepare photodegradable PE film, comprise the following steps: take raw material according to table 1, wherein photosensitive masterbatch is composed as follows: 1wt% diatomite (particle size is 100nm-500nm), 20wt% iron stearate and 79wt% polyvinyl alcohol ( The relative molecular mass is 130,000-140,000, and the density is 1.28-1.30g / cm 3 ).

[0026] The raw materials are put into a single-layer film blowing machine, extruded by a screw at 160°C, blown in a mold at 168°C, cooled, pulled by a wheel, trimmed, wound and packaged to obtain the photodegradable PE film.

[0027] Table 1 raw material consumption table / wt%

[0028]

Embodiment 2

[0030] Prepare photodegradable PE film, comprise the following steps: take raw material according to table 1, wherein photosensitive masterbatch is composed as follows: 2wt% diatomite (particle size is 100nm-500nm), 20wt% iron stearate and 78wt% polyvinyl alcohol ( The relative molecular mass is 130,000-140,000, and the density is 1.28-1.30g / cm 3 ).

[0031] Put each raw material into a single-layer blown film machine, extrude through a screw at 150°C, inflate in a grinding tool at 168°C, cool, roll, trim, wind and pack to obtain the photodegradable PE film.

Embodiment 3

[0033] Prepare photodegradable PE film, comprise the following steps: take raw material according to table 1, wherein photosensitive masterbatch is composed as follows: 2wt% diatomite (particle size is 100nm-500nm), 20wt% zinc stearate and 78wt% polyvinyl alcohol ( The relative molecular mass is 130,000-140,000, and the density is 1.28-1.30g / cm 3 ).

[0034] Put each raw material into a single-layer blown film machine, extrude through a screw at 155°C, inflate in a grinding tool at 170°C, cool, roll, trim, wind and pack to obtain the photodegradable PE 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
densityaaaaaaaaaa
densityaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a photodegradable PE film and a preparation method thereof. The photodegradable PE film is prepared from raw materials including the following components according to the mass percentage: high-pressure low-density polyethylene 55-80%, linear low-density polyethylene 19% ‑42%, photosensitive masterbatch 0.01‑3%, the preparation adopts film blowing process and the processing temperature does not exceed 175°C. Specifically, the preparation steps include adding each raw material to a single-layer blown film machine, and extruding through a screw at 145°C‑165°C , inflated in a grinding tool at 165°C-175°C, cooled, pressed by a traction wheel, trimmed, rolled and packaged to obtain the photodegradable PE film. The photodegradable PE film of the present invention degrades quickly in a specific ultraviolet light segment, and can be stored in a sealed environment for a long time in a natural environment. It can form small flakes or fragments after about 150 days of natural exposure, and can be used as farmland fertilizer, which is beneficial to the sowing of crops. and grow.

Description

technical field [0001] The invention relates to a production technology of a degradable plastic film, in particular to a photodegradable PE film and a preparation method thereof. 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. It is currently widely used in agricultural planting. The mulch film is usually made of PE material. Due to its large amount of use, the number of reusable times is limited, and the PE material itself is difficult to degrade, so a large amount of plastic waste is generated. [0003] Degradable PE film uses physical or chemical means to make the film self-degradable, thereby solving the problem of plastic accumulation in plantations. The existing degradable PE film takes a long time to degrade, has a short storage time, and its performance dec...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/06C08L23/08C08L29/04C08K5/098C08K3/34C08J5/18B29C55/28
CPCC08J5/18B29C55/28C08J2323/06C08J2423/08C08J2429/04C08K5/098C08K3/34B29K2023/0625B29K2023/0633
Inventor 黄作团黄家辉
Owner 福建富一锦科技有限公司
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