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Plastic composite film for agricultural greenhouse and preparation method thereof

An agricultural greenhouse and composite film technology, applied in the field of agricultural production, can solve the problems of complex preparation process of agricultural greenhouse plastic composite film, non-uniform composite film structure and performance, high raw material cost, and achieve good dispersion of light source and thermal insulation ability, anti-oxidative thermal insulation The effect of obvious effect and low production cost

Active Publication Date: 2018-12-18
ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the existing deficiencies and provide a plastic composite film for agricultural greenhouses and its preparation method, to improve the raw material composition and process of the plastic composite film for agricultural greenhouses, the cost of raw materials is high, the production energy consumption is large, and the structure of the composite film The problem of non-uniform performance and the problem of complex preparation process and high process consumption of plastic composite film for agricultural greenhouses

Method used

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  • Plastic composite film for agricultural greenhouse and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of agricultural greenhouse plastic composite film

[0030] Raw material and ingredient composition: (unit: g)

[0031] The agricultural greenhouse plastic composite film consists of an upper layer, a middle layer and a lower layer; the raw materials for preparing the agricultural greenhouse plastic composite film are composed of the following parts by weight: polyethylene 300g, polycaprolactone 80g, modified starch 6g, zinc oxide 8g, talcum powder 2g, Octylphenol 2g, triphenyl phosphite 3g, phenyl salicylate 1g, chlorinated paraffin 8g, tricresyl phosphate 6g, expanded perlite 2g.

[0032] Among the above raw materials, polyethylene is crystalline linear polyethylene; the particle size of expanded perlite is 20 μm.

[0033] Among the above raw materials, the preparation method of modified starch is as follows: adding starch into NaOH solution with a mass fraction of 3%, shaking for 2 hours, and drying at a temperature of 105° C. for 4.5 hours after shaking to ob...

Embodiment 2

[0040] A kind of agricultural greenhouse plastic composite film

[0041] Raw material and ingredient composition: (unit: g)

[0042] The agricultural greenhouse plastic composite film consists of an upper layer, a middle layer and a lower layer; the raw materials for preparing the agricultural greenhouse plastic composite film are composed of the following parts by weight: polyethylene 500g, polycaprolactone 150g, modified starch 10g, zinc oxide 12g, talcum powder 5g, Octylphenol 4g, triphenyl phosphite 6g, phenyl salicylate 3g, chlorinated paraffin 10g, tricresyl phosphate 15g, expanded perlite 3g.

[0043] Among the above raw materials, polyethylene is crystalline linear polyethylene; the particle size of expanded perlite is 25 μm.

[0044] Among the above raw materials, the preparation method of the modified starch is as follows: adding the starch into a NaOH solution with a mass fraction of 5%, shaking for 4 hours, and drying at a temperature of 115°C for 4.5 hours after ...

Embodiment 3

[0051] A kind of agricultural greenhouse plastic composite film

[0052] Raw material and ingredient composition: (unit: g)

[0053] The agricultural greenhouse plastic composite film comprises an upper layer, a middle layer and a lower layer; the raw materials for preparing the agricultural greenhouse plastic composite film are composed of the following parts by weight: polyethylene 350g, polycaprolactone 96g, modified starch 7g, zinc oxide 9g, talcum powder 3g, Octylphenol 2.4g, triphenyl phosphite 3.6g, phenyl salicylate 1.6g, chlorinated paraffin 8.2g, tricresyl phosphate 8g, expanded perlite 2.5g.

[0054] Among the above raw materials, polyethylene is crystalline linear polyethylene; the particle size of expanded perlite is 20 μm.

[0055] Among the above raw materials, the preparation method of modified starch is as follows: adding starch into NaOH solution with a mass fraction of 3%, shaking for 2.5 hours, and drying at a temperature of 108° C. for 4.5 hours after sha...

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Abstract

The invention discloses a plastic composite film for agricultural greenhouse and a preparation method thereof. The plastic composite film for agricultural greenhouse comprises an upper layer, a middlelayer and a lower layer; the raw materials for preparing the plastic composite film of the agricultural greenhouse comprise the following parts by weight: polyethylene, polycaprolactone, modified starch, zinc oxide, talc powder, octylphenol, triphenyl phosphite, phenyl salicylate, chlorinated paraffin, tricresol phosphate and expanded perlite. According to the plastic composite film for agricultural greenhouse and a preparation method thereof, the plastic composite film for agricultural greenhouse comprises an upper layer, a middle layer and a lower layer; a certain part by weight of tricresyl phosphate is added to the upper layer, and a certain part by weight of expanded perlite is added to the lower layer. Under the premise of ensuring a certain light transmittance, the special layeredstructure has good dispersed light source and heat preservation ability, and keeps the temperature stable in the greenhouse for a long time, the environment is suitable, and the crops in the greenhouse grow healthily and rapidly.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to an agricultural greenhouse plastic composite film and a preparation method thereof. Background technique [0002] Although there are many types of agricultural greenhouse plastic films produced and applied in the market at present, there are many types of specifications (width, thickness), but there are problems of single composition and single performance in structure and raw materials, and there are the following shortcomings in production and application: One is the high cost of plastic film for agricultural greenhouses due to the high price of functional additives; the dripping period and defogging period of the plastic film are short; Poor, light transmittance, good heat preservation agent is expensive, and the conventional dosage is large, which will increase the cost; third, the service life is not long and the degradation ability after discardi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/14
CPCA01G9/1438Y02A40/25
Inventor 高尧
Owner ZHEJIANG IND & TRADE VACATIONAL COLLEGE
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