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A thermal insulation anti-aging anti-fog agricultural shed film and its preparation method

An anti-aging, shed film technology, applied in the field of agricultural shed film, can solve the problems of poor adhesion between the coating and the polyethylene surface, short duration of the shed film drip and fog elimination, loss of drip and fog elimination function, etc. The effect of increasing production is obvious, it is beneficial to photosynthesis, and the effect of improving dripping effect

Active Publication Date: 2021-08-31
江苏智信塑胶科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation method adopted is to directly coat a layer of dripping antifogging agent on the surface of the polyethylene shed film. Due to the great difference in polarity between polyethylene and the coated dripping antifogging agent, it is often difficult to coat Moreover, the adhesion between the coating and the polyethylene surface is poor, resulting in a short duration of dripping and defogging of the shed film, which still cannot meet the requirements
Therefore, the present invention is committed to solving the problems of poor adhesion between the above-mentioned coating liquid and the base film layer, low coating efficiency, and affecting the effect of reducing fog and dripping, and at the same time solving the problems caused by additive molecules such as dripping agents and anti-fogging agents. It continuously migrates to the surface of the film and is lost with water droplets, thus gradually losing the function of dripping and defogging, resulting in the problem of short onset period

Method used

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  • A thermal insulation anti-aging anti-fog agricultural shed film and its preparation method

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preparation example Construction

[0144] The second aspect of the present invention provides the preparation method of the anti-ultraviolet and anti-aging masterbatch, comprising the following steps: adding the LDPE, hindered amine light stabilizer, ultraviolet absorber, composite antioxidant, functional auxiliary agent, slippery Put the agent into a high-speed mixer and mix for 10-15 minutes, then transfer to a twin-screw extruder for melt extrusion, the extrusion temperature is 150-200°C, and the anti-ultraviolet and anti-aging masterbatch is obtained after air cooling.

[0145] The third aspect of the present invention provides the preparation method of the thermal insulation masterbatch, comprising the following steps: putting the LDPE, transparent thermal insulation agent, basic magnesium carbonate, and PPA auxiliary agent into a high-speed mixer and mixing for 10 to 15 minutes, and then transferring To the twin-screw extruder for melt extrusion, the extrusion temperature is 150-200° C., and the heat-insul...

Embodiment 1

[0150] Embodiment 1 provides a heat preservation and anti-aging anti-fog agricultural shed film, said agricultural shed film includes a base film layer and a coating layer, the base film layer consists of an inner layer, an inner two layer, a middle layer, an outer two layer, an outer layer Layers, and each layer is stacked from the inner layer to the outside; wherein, by weight, the base film layer includes: 12 parts of the inner layer, 10 parts of the inner two layers, 18 parts of the middle layer, and the outer two layers 18 copies, 25 copies for the outer layer.

[0151] In parts by weight, the inner layer of the present invention includes: 40 parts of mLLDPE, 20 parts of LDPE, and 5 parts of anti-ultraviolet and anti-aging masterbatch.

[0152] The sources of each component of the inner layer are as follows:

[0153] The mLLDPE of the inner layer is purchased from Exxon Mobil, and the product number is 1327CA;

[0154] The LDPE of the inner layer is purchased from Exx...

Embodiment 2

[0202] Embodiment 2 provides a heat preservation and anti-aging anti-fog agricultural shed film, said agricultural shed film comprises a base film layer and a coating layer, the base film layer consists of an inner layer, an inner two layer, a middle layer, an outer two layer, an outer layer Layers, and each layer is stacked from the inner layer to the outside; wherein, by weight, the base film layer includes: 12 parts of the inner layer, 10 parts of the inner two layers, 18 parts of the middle layer, and the outer two layers 18 copies, 25 copies for the outer layer.

[0203] In parts by weight, the inner layer of the present invention includes: 70 parts of mLLDPE, 30 parts of LDPE, and 10 parts of anti-ultraviolet and anti-aging masterbatch.

[0204] The sources of each component of the inner layer are as follows:

[0205] The mLLDPE of the inner layer is purchased from Exxon Mobil, and the product number is 1327CA;

[0206] The LDPE of the inner layer is purchased from E...

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Abstract

The invention relates to the field of agricultural shed films, in particular to a thermal insulation, anti-aging, anti-fog and anti-fog agricultural shed film and a preparation method thereof. A thermal insulation, anti-aging, anti-fog agricultural shed film, said agricultural shed film includes a base film layer and a coating layer, the base film layer is composed of an inner layer, an inner two layer, a middle layer, an outer two layer, and an outer layer, and each Layers are stacked sequentially from the inner layer to the outer layer. The agricultural shed film prepared by the present invention has the effect of heat preservation, anti-aging and defogging, which is specifically shown as that the agricultural shed film has better coating efficiency, can improve the effect of the shed film on reducing fog and dripping, improves the light transmittance, and improves the use of The aging resistance of chlorine, sulfur and other pesticides is beneficial to the photosynthesis of crops and reduces crop diseases. It is suitable for various large and medium-sized arch sheds and solar greenhouses for the cultivation of various leafy vegetables, flowers, and melons and fruits in the winter. .

Description

technical field [0001] The invention belongs to the field of agricultural shed film, and more specifically, the invention relates to a heat-preserving, anti-aging, anti-fog agricultural shed film and a preparation method thereof. Background technique [0002] Greenhouse is one of the important facilities of modern agriculture, which changes the dependence of traditional planting methods on natural conditions. The yield and quality of crops per unit area are effectively improved, and the production cost is relatively reduced. Therefore, greenhouse planting technology is gradually replacing traditional planting technology in agriculture and planting and is accepted by people. According to statistics, the covered area of ​​greenhouse film in my country exceeds 16,000km 2 , the annual use of shed film is about 1500kt / a, and the annual renewal demand is about 700kt, showing an increasing trend year by year. Has formed a huge industry. The main raw material for the production o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G9/14B32B27/06B32B27/08B32B27/32B32B27/20B32B27/30B32B33/00C08L23/08C08L23/06C08K5/00C08K3/26
CPCA01G9/1438B32B27/08B32B27/20B32B27/306B32B27/32B32B2255/10B32B2307/304B32B2307/552B32B2410/00C08K2003/267C08L23/0815C08L23/0853C08L2205/025C08L2205/03C08L2207/066C08L23/06C08K5/005C08K3/26Y02A40/25
Inventor 卞希惠魏玉强李承阳
Owner 江苏智信塑胶科技有限公司
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