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A kind of degradable agricultural plastic film and preparation method thereof
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A plastic film and agricultural technology, applied in the field of degradable agricultural plastic film and its preparation, can solve the problems of not easy to degrade, unable to grasp the degradation time, and difficult to predict the degradation time, and achieve high biodegradability and short degradation time Effect
Active Publication Date: 2016-01-20
SUZHOU POLYMER NEW MATERIALS TECH
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Abstract
Description
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Application Information
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Problems solved by technology
However, since the photodegradable plastic film cannot be completely degraded, the degradation time is difficult to predict due to sunlight and climate changes, so it is impossible to grasp the degradation time. The product can only be degraded under the action of light, and the buried part of the agricultural film in the soil is not easy to degrade. Therefore, largely limits its scope of application
Method used
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Examples
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Effect test
Embodiment 1
[0018] A degradable agricultural plastic film, the components and the mass fraction of each component are as follows: 10 parts of polyhydroxyvalerate, 12 parts of polycaprolactone, 5 parts of starch, 5 parts of cellulose, plasticizer phthalic acid 2 parts of dimethyl ester, 1 part of coupling agent vinyltriethoxysilane, 10101 parts of antioxidant.
[0019] Mix the components evenly, extrude and blow molding, cool and curl to get the finished product; among them, the temperature of the head of the extruder is 150~160°C, and the temperature of the barrel is divided into 3 zones, which are 1 zone 110~120°C and zone 2 150~160℃, zone 3 170~180℃; screw speed 30~50r / min.
Embodiment 2
[0021] A degradable agricultural plastic film, the components and the mass fraction of each component are as follows: 30 parts of polyhydroxyvalerate, 25 parts of polycaprolactone, 10 parts of starch, 10 parts of cellulose, plasticizer phthalic acid 5 parts of dimethyl ester, 3 parts of coupling agent vinyltriethoxysilane, 10103 parts of antioxidant.
[0022] Mix the components evenly, extrude and blow molding, cool and curl to get the finished product; among them, the temperature of the head of the extruder is 150~160°C, and the temperature of the barrel is divided into 3 zones, which are 1 zone 110~120°C and zone 2 150~160℃, zone 3 170~180℃; screw speed 30~50r / min.
Embodiment 3
[0024] A degradable agricultural plastic film, the components and the mass fraction of each component are as follows: 20 parts of polyhydroxyvalerate, 18 parts of polycaprolactone, 8 parts of starch, 7 parts of cellulose, plasticizer phthalic acid 4 parts of dimethyl ester, 2 parts of coupling agent triisostearyl titanate, 10102 parts of antioxidant.
[0025] Mix the components evenly, extrude and blow molding, cool and curl to get the finished product; among them, the temperature of the head of the extruder is 150~160°C, and the temperature of the barrel is divided into 3 zones, which are 1 zone 110~120°C and zone 2 150~160℃, zone 3 170~180℃; screw speed 30~50r / min.
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PUM
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Abstract
The invention discloses a degradable agriculture plastic film and a preparation method thereof. The degradable agriculture plastic film is prepared from the following components in parts by weight: 10-30 parts of polyhydroxy valerate, 12-25 parts of polycaprolactone, 5-10 parts of starch, 5-10 parts of cellulose, 2-5 parts of a plasticizer, 1-3 parts of a coupling agent, 1-3 parts of an antioxidant as well as 10-20 parts of amino acid, 1-6 parts of sodium phosphate and 2-5 parts of ammonium sulfate, wherein the plasticizer is benzenedicarboxylic acid dimethyl ester or dioctyl phthalate; the coupling agent is vinyl triethoxy silane or titaniumtriisostearoylisopropoxide mixture; and the antioxidant is an antioxidant 1010 or antioxidant 1076. The degradable agriculture plastic film disclosed by the invention is high in biodegradability and short in degradation time, and the degradation rate within 2 month can be 99%.
Description
technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a degradable agricultural plastic film and a preparation method thereof. Background technique [0002] According to reports, my country has become the country with the largest area covered by agricultural plastic films and the largest variety of crops. Although covering plastic film has increased farmers' income, the harm it brings is also obvious. Most of the films used in my country are high molecular polymers made of polyethylene or polyvinyl chloride, and their products are not easy to decompose under natural conditions. According to scientific research calculations, the residual film fragments of the film can exist in the soil for as long as 200 to 400 years. When the plastic residual film in the soil cultivation layer continues to increase to a certain extent, it will cause soil compaction and poor permeability, resulting in a significant reduction...
Claims
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Application Information
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