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Striped full-biodegradable mulching film and preparation method thereof

A technology of degrading plastic film and whole biology, applied in the field of strip fully biodegradable plastic film and its preparation, which can solve the problems of white pollution, soil structure hardening, harming the ecological environment, etc.

Active Publication Date: 2017-01-04
SHANDONG QINGTIAN PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These film fragments can form a barrier layer in the soil, hinder the flow of water, air, fertilizer, etc. in the soil, cause the soil structure to harden, seriously endanger the ecological environment, and cause white pollution

Method used

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  • Striped full-biodegradable mulching film and preparation method thereof
  • Striped full-biodegradable mulching film and preparation method thereof
  • Striped full-biodegradable mulching film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] The degradation base material is produced by: 25% PBS + 20% PLA + 40% PBAT + 5% calcium stearate + 1% antioxidant 1010 + 1% coupling agent + 8% glycerin. The degradation black masterbatch is composed of: It is produced by 45% PBAT compound + 25% carbon black + 10% modified wollastonite + 15% POE + 3% heat stabilizer + 2% dispersant. Take 94.9% degraded base material + 5% degraded black masterbatch + 0.1% opening agent for the black belt layer, and 4% light stabilizer 622 + 95.9% degraded base material + 0.1% lubricant for the white belt layer. The temperature of the two-layer co-extrusion equipment is adjusted as follows: black belt barrel: 140°C, 150°C, 160°C; white belt barrel: 145°C, 155°C, 165°C; connecting body 155°C; machine head: 170°C; Under the nose: 180°C. After the temperature rises, the film is lifted to produce two black and one white fully biodegradable mulches. The mechanical properties of the fully biodegradable mulch film were tested according to the ...

Embodiment 2

[0053] The degradation base material is produced by: 30% PBS + 20% PLA + 35% PBAT + 5% calcium stearate + 1% antioxidant 168 + 0.7% coupling agent + 8.3% glycerin. The degradation black masterbatch is composed of: It is produced by 40% PBAT compound + 30% carbon black + 10% modified wollastonite + 15% POE + 3% heat stabilizer + 2% dispersant. Take 96.9% degraded base material + 3% degraded black masterbatch + 0.1% opening agent for the black belt layer, and 2% light stabilizer 622 + 97.9% degraded base material + 0.1% lubricant for the white belt layer. After stirring evenly, put The temperature of the two-layer co-extrusion equipment is adjusted as follows: black belt layer: 135°C, 145°C, 155°C; white belt layer: 140°C, 150°C, 160°C; connecting body 155°C; head: 175°C; Bottom: 180°C. After the temperature rises, the film is lifted to produce two white and one black fully biodegradable mulches.

Embodiment 3

[0055]The degradation base material is produced by: 25% PBS + 20% PLA + 40% PBAT + 5% calcium stearate + 1% antioxidant 1010 + 1% coupling agent + 8% glycerin. The degradation black masterbatch is composed of: It is produced by 50% PBAT compound + 20% carbon black + 15% modified wollastonite + 10% POE + 3% heat stabilizer + 2% dispersant. Take 94.9% degraded base material + 5% degraded black masterbatch + 0.1% opening agent for the black belt layer, and 3% light stabilizer 944 + 96.9% degraded base material + 0.1% lubricant for the white belt layer. After stirring evenly, put The temperature of the two-layer co-extrusion equipment is adjusted as follows: black belt layer: 135°C, 145°C, 155°C; white belt layer: 145°C, 155°C, 165°C; connecting body 155°C; head: 175°C; Bottom: 180°C. After the temperature rises, the film is lifted to produce two black and one white fully biodegradable mulches.

[0056] The use process of biodegradable agricultural mulch film generally goes thro...

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Abstract

The invention belongs to the technical field of mulching film preparation and particularly relates to a striped full-biodegradable mulching film and a preparation method thereof. The striped full-biodegradable mulching film is composed of black stripes and white stripes alternating with each other, the black stripes are made from degraded black masterbatch, an anti-blocking agent and a degradable base, and the white stripes are made from a degradable base, a photo-stabilizer, and a lubricant. The serial problems that the original full-biodegradable film is difficult to process and plasticize, has poor mechanical properties and is uncontrollable in degradation cycle are overcome; in addition, the preparation process is combined with white and black film preparation process, the full-biodegradable film is produced based on stripes, and at the premise of each of the black and white stripes being controllably degradable, the black stripes automatically remove weeds, hold temperature and hold soil moisture and the white stripes are highly light-permeable and can hold moisture, temperature and soil moisture.

Description

technical field [0001] The invention belongs to the technical field of film preparation, and in particular relates to a fully biodegradable film in strips and a preparation method thereof. Background technique [0002] Today, due to the use of agricultural mulch, the temperature and humidity of the soil are effectively controlled, the loss of water and nutrients is reduced, and the high and stable yield of crops is promoted, thereby increasing the benefits of agricultural production. But at the same time, due to the one-time use of mulch, a large amount of residual mulch remains in the soil every year. Plastic mulches are difficult to degrade in nature. These film fragments can form a barrier layer in the soil, hinder the flow of water, air, fertilizer, etc. in the soil, cause the soil structure to harden, seriously endanger the ecological environment, and cause white pollution. [0003] With the continuous deepening of human society's understanding of environmental issues...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/00C08L67/02C08L67/04C08K13/06C08K3/34C08K3/04C08K5/134C08K5/098C08K5/526C08K13/02A01G13/02B29D7/01B29C47/92B29C48/92
CPCA01G9/1438A01G13/0262B29C48/92B29C2948/92704B29D7/01C08J5/18C08J2367/00C08J2467/00C08J2467/02C08J2467/04C08L67/00C08L2201/06C08L2203/16C08L2205/02C08L2205/025C08L2205/035C08L67/02C08L67/04C08K13/06C08K3/34C08K3/04C08K5/1345C08K5/098C08K13/02C08K5/053C08K5/526
Inventor 尹君华马强边康王先政卜文浩
Owner SHANDONG QINGTIAN PLASTIC IND
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