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Degradable mulching film for vegetable cultivation in plateau regions and preparation method and application of mulching film

A technology for degrading mulch and vegetables, applied in the field of materials, can solve the problems of blocking nutrients, destroying the quality of cultivated land, and dead seedlings of vegetables, and achieves good mechanical properties and aging resistance, enhanced mechanical properties, and improved aging resistance.

Active Publication Date: 2019-08-13
LANZHOU XINYINHUAN RUBBER & PLASTIC PROD CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the currently used mulch films are non-degradable, and the residual film remains in the soil, entangles the root system, blocks nutrients, and leads to dead and bad seedlings of vegetables, thereby reducing production and destroying the quality of cultivated land

Method used

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  • Degradable mulching film for vegetable cultivation in plateau regions and preparation method and application of mulching film
  • Degradable mulching film for vegetable cultivation in plateau regions and preparation method and application of mulching film

Examples

Experimental program
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Effect test

Embodiment 1

[0020] Example 1 proposes a special material for fully biodegradable mulch film for plateau vegetable planting and its preparation method, which specifically includes:

[0021] PBAT, molecular weight 120,000, 100 parts.

[0022] PLA, molecular weight 80,000, 10 parts.

[0023] Compatibilizer 4370, 0.5 parts.

[0024] calcium carbonate, 8 servings.

[0025] Loaded ultraviolet absorber a, 0.5 parts.

[0026] Zinc oxide, 0.3 parts.

[0027] Antioxidant 168, 0.1 part, antioxidant 1010, 0.1 part.

[0028] The preparation method includes the following steps: put PBAT and PLA in an oven at 60°C, and dry them for 6 hours; put the loaded ultraviolet absorber a, zinc oxide, antioxidant 168, and antioxidant 1010 in a stirrer, and put them in a stirrer for 100r / min and stir for 2 hours; then add 4370 and calcium carbonate to the high mixer for mixing at a speed of 1000r / min and mix for 2 minutes. Then the mixed material is put into a screw extruder for extrusion granulation, and th...

Embodiment 2

[0031] Example 2 proposes a special material for fully biodegradable mulch film for plateau vegetable planting and its preparation method, which specifically includes:

[0032] PBAT, molecular weight 120,000, 100 parts.

[0033] PLA, molecular weight 80,000, 10 parts.

[0034] Compatibilizer 4370, 0.5 parts.

[0035] calcium carbonate, 8 servings.

[0036] Loaded ultraviolet absorber b, 0.5 parts.

[0037] Zinc oxide, 0.3 parts.

[0038] Antioxidant 168, 0.1 part, antioxidant 1010, 0.1 part.

[0039] The preparation method includes the following steps: put PBAT and PLA in an oven at 60°C, and dry them for 6 hours; put the loaded ultraviolet absorber b, zinc oxide, antioxidant 168, and antioxidant 1010 in a stirrer, and put them in a stirrer for 100r / min and stir for 2 hours; then add 4370 and calcium carbonate to the high mixer for mixing at a speed of 1000 rpm, and mix for 2 minutes. Then the mixed material is put into a screw extruder for extrusion granulation, and th...

Embodiment 3

[0042] Example 3 proposes a fully biodegradable mulch special material for plateau vegetable planting and a preparation method thereof, specifically comprising:

[0043] PBAT, molecular weight 120,000, 100 parts.

[0044] PLA, molecular weight 80,000, 10 parts.

[0045] Compatibilizer 4370, 0.5 parts.

[0046] calcium carbonate, 8 servings.

[0047] Loaded ultraviolet absorber c, 0.5 part.

[0048] Zinc oxide, 0.3 parts.

[0049] Antioxidant 168, 0.1 part, antioxidant 1010, 0.1 part.

[0050] The preparation method includes the following steps: put PBAT and PLA in an oven at 60°C, and dry them for 6 hours; put the loaded ultraviolet absorber c, zinc oxide, antioxidant 168, and antioxidant 1010 in a stirrer, and put them in a stirrer for 100r / min and stir for 2 hours; then add 4370 and calcium carbonate to the high mixer for mixing at a speed of 1000 rpm, and mix for 2 minutes. Then the mixed material is put into a screw extruder for extrusion granulation, and the melt t...

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Abstract

The invention relates to a degradable mulching film for vegetable cultivation in plateau regions and a preparation method and application of the mulching film. The mulching film is prepared from PBAT,polylactic acid, a compatilizer, inorganic filler, an antioxidant, a supported-type ultraviolet light absorber and an ultraviolet light reflection agent. According to the mulching film, the adopted PBAT and polylactic acid are completely biodegradable materials, can be completely degraded into carbon dioxide and water and cannot pollute the environment. Graphene oxide with certain uvioresistant performance is used as a carrier for supporting a traditional ultraviolet light absorber, the defects are overcome that the traditional ultraviolet light absorber is low in thermal stability, easily migrates, is easily decomposed, is poor in compatibility with the PBAT and the like, the anti-aging performance of the composite material is improved, and the degradation period of the composite material is prolonged; meanwhile, addition of the graphene oxide strengthens the mechanical property of the composite material. The mulching film has both properties, namely, a good mechanical property and an anti-aging property and is good in development prospect.

Description

technical field [0001] The invention belongs to the field of material technology, and in particular relates to a degradable plastic film for plateau vegetable planting, a preparation method and application thereof. Background technique [0002] In the 1960s, mulching technology emerged in Japan, Europe, America and other countries and regions, and quickly became popular around the world. Since 1979, plastic film mulching cultivation technology has been vigorously promoted in my country. In 2014, China's agricultural plastic film covering area reached 298 million mu, ranking first in the world. Film mulching can reduce the impact of rainwater and prevent erosion and agglomeration; it can effectively reduce the evaporation of soil moisture, preserve moisture in drought, increase moisture after rain, promote crops' absorption of water and growth and development, and improve the efficiency of soil moisture use; It can keep the soil at a suitable temperature and humidity, make t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L67/02C08L67/04C08K13/06C08K9/12C08K5/132C08K3/26C08K3/22C08J5/18A01G13/02
CPCA01G9/1438A01G13/0275C08J5/18C08J2367/02C08J2467/04C08K5/132C08K9/12C08K13/06C08K2003/2296C08K2003/265
Inventor 李崇霄秦文生樊廷录秦体文
Owner LANZHOU XINYINHUAN RUBBER & PLASTIC PROD CO LTD
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