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Environment-friendly PVC agricultural film and preparation method thereof

An environmentally friendly, PVC resin powder technology, applied in the field of polymer materials, can solve the problems of narrow application range of PE agricultural film, high toxicity of PVC film, poor heat preservation, etc., and achieve the effect of easy modeling, good stability and good weather resistance

Inactive Publication Date: 2016-10-12
JIANGSU GOLDEN MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the agricultural film is made of PE material, which is light in texture, easy to shape, and good in light transmission. It is suitable for various shed films and mulch films. However, its weather resistance is poor, its thermal insulation is poor, and it is not easy to bond, which makes the scope of application of PE agricultural film narrow. , inconvenient to use; in recent years, a PVC agricultural film has appeared on the market. In the future, PVC agricultural film will be an application trend. PVC agricultural film has low cost, good light transmission, strong heat preservation, soft and easy to shape, good weather resistance, and good stickiness. knot and other advantages, but in the prior art, the toxicity of PVC film is relatively large, the plasticizer used in PVC is non-environmental protection plasticizer DOP, this plasticizer is a kind of estrogen, and the stabilizer used is heavy metal materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0030] A preparation method of an environment-friendly PVC agricultural film, comprising the steps of:

[0031] A, weighing: take by weighing corresponding each component material according to above-mentioned formula;

[0032] b. High-speed mixing: After weighing, mix the raw materials evenly in a high-speed mixer, and control the speed at 1000-3000r / min. First, add the resin powder to the high-speed mixer for stirring. When the temperature of the material rises to 45-50°C, add the raw materials For the liquid components in the mixture, continue to stir at a high speed. When the temperature of the material rises to 75-85°C, add the solid component in the raw material, and continue to stir at a high speed until the temperature of the material rises to 100-120°C;

[0033] c. Low-speed mixing: Cool the mixed raw materials after high-speed mixing to 40-70°C under low-speed stirring, and control the speed at 100-500r / min;

[0034] d. Plasticization: the cooled mixture is plasticiz...

Embodiment 1

[0039] Stir 100g of PVC resin powder in a high-speed mixer, and control the speed at 1000-3000r / min. When the material temperature rises to 50°C, add 4g of epoxy soybean oil, 30g of dioctyl terephthalate, and 1g of SurFin304 into the high-speed mixer Stir, when the temperature of the material rises to 80°C, add 1g of rare earth stabilizer, 1g of NOX1076 and 1g of UV531 into the high-speed mixer and continue stirring until the temperature of the material rises to 120°C. The above materials in the mixer rely on the friction between raw materials Raise the temperature; the material fully mixed in the high-speed mixer is cooled to 60°C under low-speed stirring, the stirring speed is 100-500r / min, and the cooled mixture is plasticized at 180°C with an extruder , The plasticized material is pressed into thin sheets by a calender, and the sheet is re-stretched to the required specifications by a stretching machine. After stretching, it is cooled to 50°C, and finally cooled and shaped ...

Embodiment 2

[0041] Stir 100g of PVC resin powder in a high-speed mixer, and control the speed at 1000-3000r / min. When the temperature of the material rises to 45°C, add 6g of epoxy soybean oil, 40g of synthetic vegetable ester, and 3g of SurFin 304 into the high-speed mixer for stirring. When the temperature of the material rises to 80°C, add 2g of calcium zinc stabilizer, 1g of stearic acid, 1g of NOX1076 and 1g of UV531 into the high-speed mixer and continue stirring until the temperature of the material rises to 110°C. The friction between them will increase the temperature; the material fully mixed in the high-speed mixer is cooled to 70°C under low-speed stirring, the stirring speed is 100-500r / min, and the cooled mixture is cooled by an open mill at 140°C After plasticizing, the plasticized material is pressed into thin sheets by a calender, and the sheet is re-stretched to the required specification by a stretching machine. After stretching, it is cooled to 40°C, and finally cooled ...

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Abstract

The invention discloses an environment-friendly PVC agricultural film and a preparation method thereof, belonging to the technical field of high polymer materials. In the PVC agricultural film disclosed by the invention, the adopted PVC material is an environment-friendly material; in the preparation process, environment-friendly stabilizer and plasticizer are adopted; the prepared material has the advantages of good stability, light texture, easiness in shaping, good light transmission and weather resistance and strong thermal insulation property, can meet the using requirements and achieves environment-friendly and pollution-free effects; the agricultural film has environment-friendly and pollution-free effects; even if the internal environment-friendly plasticizer and stabilizer are separated out, the soil is not polluted and the crop production is not influenced; and the agricultural film prepared in the invention can be recycled, thereby saving the resources.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to an environment-friendly PVC agricultural film and a preparation method thereof. Background technique [0002] At present, most of the agricultural film is made of PE material, which is light in texture, easy to shape, and good in light transmission. It is suitable for various shed films and mulch films. However, its weather resistance is poor, its thermal insulation is poor, and it is not easy to bond, which makes the scope of application of PE agricultural film narrow. , inconvenient to use; in recent years, a PVC agricultural film has appeared on the market. In the future, PVC agricultural film will be an application trend. PVC agricultural film has low cost, good light transmission, strong heat preservation, soft and easy to shape, good weather resistance, and good stickiness. knot and other advantages, but in the prior art, the toxicity of PVC film is re...

Claims

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Application Information

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IPC IPC(8): C08L27/06C08K5/00C08K5/1515C08K5/12C08K5/134C08K5/098C08K5/09
CPCC08K5/00C08K5/09C08K5/098C08K5/12C08K5/1345C08K5/1515C08L2203/16C08L27/06
Inventor 袁磊陈飞武余彬孙宏昌
Owner JIANGSU GOLDEN MATERIAL TECH
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