Three-layer composite high-barrier controllable fully biodegradable mulch film and preparation method thereof

A technology of degrading plastic film and high barrier, applied in the fields of botanical equipment and methods, chemical instruments and methods, layered products, etc., can solve the problems of difficult operation, complicated process, low practicability of energy saving and consumption reduction, etc.

Active Publication Date: 2022-06-03
SHANDONG QINGTIAN PLASTIC IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Carbon black is easy to agglomerate and form black spots; using five-layer, seven-layer, and nine-layer co-extrusion molding equipment is not practical from the perspective of energy saving and consumption reduction, and the process is complicated and difficult to operate

Method used

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  • Three-layer composite high-barrier controllable fully biodegradable mulch film and preparation method thereof
  • Three-layer composite high-barrier controllable fully biodegradable mulch film and preparation method thereof
  • Three-layer composite high-barrier controllable fully biodegradable mulch film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

Light stabilizer 0.125Kg; antioxidant 0.125Kg; lubricant 0.25Kg; dispersant 0.5Kg.

Middle layer: degradable mulch barrier resin is made of the raw material of following mass percentage:

[0088] PBAT: 87 wt.%; PLA: 6 wt.%; TPU: 4 wt.%; Lubricant: 1 wt.%; Dispersant: 2 wt.%.

25Kg per bag after above-mentioned raw material granulation, wherein: PBAT 21.75Kg; PLA 1.5Kg; TPU 1Kg; lubricant

0.25Kg; dispersant 0.5Kg.

Inner layer: degradable plastic film slow-release layer resin is made of the raw material of following mass percentage:

[0091] PBAT: 80.5wt.%; PLA: 13wt.%; Lubricant: 1.5wt.%; Dispersant: 2wt.%; Coupling Agent:

3wt.%.

25Kg per bag after above-mentioned raw material granulation, wherein: PBAT 20.125Kg; PLA 3.25Kg; lubricant 0.375Kg;

Dispersing agent 0.5Kg; coupling agent 0.75Kg.

Wherein:

PBAT is obtained by copolymerization of butylene adipate and butylene terephthalate, wherein butylene adipate and

The mass ratio of butylene terephthalate was 45:55. PB...

Embodiment 2

0.5Kg; light stabilizer 0.15Kg; antioxidant 0.2Kg; lubricant 0.25Kg; dispersant 0.5Kg.

Middle layer: degradable mulch barrier resin is made from the raw material of following mass percentage:

[0123] PBAT: 87 wt.%; PLA: 6 wt.%; TPU: 4 wt.%; Lubricant: 1 wt.%; Dispersant: 2 wt.%.

25Kg per bag after above-mentioned raw material granulation, wherein: PBAT 21.75Kg; PLA 1.5Kg; TPU 1Kg; lubricant

0.25Kg; dispersant 0.5Kg.

Inner layer: degradable plastic film slow-release layer resin is made of the raw material of following mass percentage:

[0126] PBAT: 80.5 wt.%; PLA: 13 wt.%; Lubricant: 1.5 wt.%; Dispersant: 2 wt.%; Coupling agent:

3wt.%.

25Kg per bag after above-mentioned raw material granulation, wherein: PBAT 20.125Kg; PLA 3.25Kg; lubricant 0.375Kg;

Dispersing agent 0.5Kg; coupling agent 0.75Kg.

wherein:

PBAT is obtained by copolymerization of butylene adipate and butylene terephthalate, wherein butylene adipate and

The mass ratio of butylene terephthalate was ...

Embodiment 3

Light stabilizer 0.2Kg; antioxidant 0.2Kg; lubricant 0.25Kg; dispersant 0.5Kg.

Middle layer: degradable mulch barrier resin is made from the raw material of following mass percentage:

[0146] PBAT: 87 wt.%; PLA: 6 wt.%; TPU: 4 wt.%; Lubricant: 1 wt.%; Dispersant: 2 wt.%.

25Kg per bag after above-mentioned raw material granulation, wherein: PBAT 21.75Kg; PLA 1.5Kg; TPU 1Kg; lubricant

0.25Kg; dispersant 0.5Kg.

Inner layer: degradable mulch film slow-release layer resin is made of the raw material of following mass percentage:

[0149] PBAT: 80.5 wt.%; PLA: 13 wt.%; Lubricant: 1.5 wt.%; Dispersant: 2 wt.%; Coupling agent:

3wt.%.

25Kg per bag after above-mentioned raw material granulation, wherein: PBAT 20.125Kg; PLA 3.25Kg; lubricant 0.375Kg;

Dispersing agent 0.5Kg; coupling agent 0.75Kg.

wherein:

PBAT is obtained by the copolymerization of butylene adipate and butylene terephthalate, wherein butylene adipate and

The mass ratio of butylene terephthalate was 45:55....

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Abstract

The invention belongs to the technical field of agricultural film preparation, and specifically relates to a three-layer composite high-barrier controllable fully biodegradable plastic film and a preparation method thereof. The plastic film includes an inner layer: a slow-release layer of a plastic film; a middle layer: a barrier layer of a plastic film; an outer layer: The mulch life control layer; the mulch slow release layer includes PBAT and PLA; the mulch barrier layer includes PBAT, PLA and TPU; the mulch life control layer includes PBAT and PLA. The invention not only meets the needs of farmers for the original heat preservation and moisture preservation functions of the mulch, but also can control the degradation effect of the mulch within a certain period of time according to the needs of crop growth, so that the mulch can be completely degraded when the crops are received, and the land environment and soil Without any pollution. It reduces the secondary labor cost of farmers and reduces social secondary pollution. The preparation method of the invention is scientific, reasonable, simple and easy to implement.

Description

Three-layer composite high-barrier controllable fully biodegradable mulch film and preparation method thereof technical field The invention belongs to the technical field of agricultural film preparation, be specifically related to a kind of three-layer composite high-barrier controllable full biodegradation ground Membranes and methods of making the same. Background technique [0002] The farmland area covered by plastic film in my country has exceeded 13 million hectares, accounting for about 1 / 9 of the country's farmland area. due to agricultural land The use of film can effectively control the temperature and humidity of the soil, reduce the loss of water and nutrients, and promote the growth of crops. High yield and stable yield, thereby increasing the efficiency of agricultural production. But at the same time, due to the one-time use of mulch, there will be A large amount of residual film remains in the soil. Most of these residual mulch films are made of pol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/02B32B27/36B32B27/18B32B27/08B32B27/40B32B7/022B32B7/02B32B33/00C08J5/18C08L67/02C08L67/04C08L75/08B29C48/00B29C48/10B29C48/21B29C55/28
CPCA01G13/0275B32B27/36B32B27/18B32B27/08B32B27/40B32B7/022B32B7/02B32B33/00C08J5/18B29C48/0017B29C48/10B29C48/21B29C55/28B32B2250/03B32B2250/40B32B2307/50B32B2307/54B32B2307/7265B32B2307/716B32B2410/00C08J2367/02C08J2467/04C08J2475/08Y02A40/28
Inventor 尹君华国先峰王先政
Owner SHANDONG QINGTIAN PLASTIC IND
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