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A grass powder-based degradable agricultural mulch film and its preparation method

An agricultural mulch and grass powder-based technology, applied in plant protection covers, etc., can solve the problems of degradation induction period and slow degradation rate, poor mechanical properties and water resistance, and inability to play a role in fertile fields, so as to achieve sufficient supply and good fertile fields The effect of saving food resources

Active Publication Date: 2016-11-16
苏州格瑞惠农膜材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing above-mentioned mulch films have poor mechanical properties and water resistance, and the degradation induction period and degradation rate are slow and uncontrollable, and the degraded substances cannot play the role of fertilizing the field.

Method used

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  • A grass powder-based degradable agricultural mulch film and its preparation method
  • A grass powder-based degradable agricultural mulch film and its preparation method
  • A grass powder-based degradable agricultural mulch film and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: In terms of 100 kilograms, the preparation method of the grass powder-based degradable agricultural mulch film provided in this embodiment is as follows:

[0045] 1) Add 55 kg of hybrid pennisetum powder with a particle size of 500 mesh, 7.5 kg of Dow 3004 E​A​A resin, and epoxy-containing silicone into a 100-liter internal mixer 5 kg of acrylic resin, 2.5 kg of silicone dendritic resin monomer, 1 kg of epoxy soybean oil, 1 kg of polyethylene wax, 1 kg of titanium dioxide with a particle size of 1250 mesh, and 1 kg of calcium carbonate with a particle size of 1500 mesh, at 125°C Mixed for 2.5 hours, then poured into the double-cone feeder and added to the single-screw granulator. The temperature of the three heating zones of the single-screw granulator was controlled at 125°C, 130°C, and 135°C, and the temperature of the die head was controlled at 135°C. After exiting the die head, it enters the air cushion air cooling, and enters the granulator after cool...

Embodiment 2

[0049] Embodiment 2: In terms of 100 kilograms, the preparation method of the grass powder-based degradable agricultural mulch film provided in this embodiment is as follows:

[0050] 1) Add 50 kg of Pennisetum powder with a particle size of 250 mesh, 7 kg of Dow 3004 E​A​A resin, organic epoxy-containing organic compound into a 100-liter internal mixer 5 kg of silicone acrylic resin, 2 kg of silicone dendritic resin monomer, 1 kg of epoxy soybean oil, 1 kg of polyethylene wax, 1 kg of titanium dioxide with a particle size of 1250 mesh, 1 kg of calcium carbonate with a particle size of 1500 mesh, at 125 ° C Mix for 2.5 hours, then pour it into the double-cone feeder and add it to the single-screw granulator. The temperature of the three heating zones of the single-screw granulator is controlled at 125°C, 130°C, and 135°C respectively, and the temperature of the die head is controlled at 135°C. , enter the air cushion air cooling after exiting the die head, and enter the granul...

Embodiment 3

[0053] Embodiment three: In terms of 100 kilograms, the preparation method of the grass powder-based degradable agricultural mulch film provided in this embodiment is as follows:

[0054] 1) Add 45 kg of 300-mesh wheat straw powder, 15 kg of DuPont 2014 brand film-grade EAA high-strength resin, 5 kg of epoxy-containing silicone acrylic resin, and silicone dendritic resin into a 100-liter internal mixer. Body 3 kg, epoxidized soybean oil 1 kg, polyethylene wax 1 kg, 1250 mesh titanium dioxide 1 kg, 1300 mesh calcium carbonate 1 kg, banburying at 110~125℃ for 1.5~2.5 hours, then pour into double cone feeding The temperature of the three heating zones of the single-screw granulator is controlled at 120°C, 130°C, and 135°C respectively, and the temperature of the die head is controlled at 135°C. After exiting the die head, it enters the air cushion air cooling, and after cooling Enter the granulator to obtain 72 kg of modified grass powder masterbatch.

[0055] 2) Mix 22.5 kg of ...

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Abstract

The invention discloses a grass meal based degradable agricultural mulch film which is characterized by comprising the following components as raw materials by weight: 45-55 parts of grass meal, 5-15 parts of ethylene acrylic acid (EAA) copolymer resin, namely EAA resin; 5-15 parts of silicone acrylic resin containing epoxy groups, 1-5 parts of a silicone branch resin monomer, 1-3 parts of epoxy soybean oil, 1-3 parts of polyethylene wax, 1-3 parts of titanium dioxide, 1-4 parts of calcium carbonate, 15-30 parts of polyethylene, 5-15 parts of maleic anhydride grafted modified polyethylene, 0.1-0.6 part of light degradation masterbatch and 0.3-1.5 part of moisture absorption masterbatch. The grass meal based degradable agricultural mulch film has excellent mechanical properties and water resistance, and can control the degradation rate according to different regions, climatic conditions and crop varieties. The invention also provides a preparation method of the agricultural mulch film, and the method has the advantages of simple process, abundant raw materials and easy popularization.

Description

technical field [0001] The invention relates to a grass powder-based degradable agricultural mulch film and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] Agricultural plastic mulch was adopted in agricultural production in the 1950s. my country introduced agricultural mulch film from Japan in 1978, and it is widely used in domestic crop cultivation. In order to make full use of the production-increasing effect of plastic mulch and eliminate the problems of land fertility decline and environmental pollution caused by plastic mulch, developed countries have successively begun to study degradable mulch. [0003] At present, the main degradable mulches include: biodegradable mulch, photodegradable mulch, photo / biodegradable mulch and degradable mulch made of plant fibers. However, the existing above-mentioned mulch films have poor mechanical properties and water resistance, and the degradation induction perio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L97/02C08L23/08C08L33/08C08L51/06C08L83/06C08L23/06C08K13/02C08K5/1515C08K3/22C08K3/26C08J3/22B29C47/92B29C55/28A01G13/02B29C48/92
CPCB29C48/0017B29C48/10B29C48/92B29C2948/926B29C2948/92704
Inventor 谢洪德夏心蕾徐磊鲍清
Owner 苏州格瑞惠农膜材料科技有限公司
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