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Composite film for agricultural greenhouses and preparation method of composite film

A composite film, agricultural greenhouse technology, applied in the fields of botanical equipment and methods, chemical instruments and methods, agriculture, etc., can solve the problems of limited thermal insulation performance and tensile strength, weak far-infrared blocking ability, serious electrostatic adsorption, etc. The far-infrared blocking ability and thermal insulation performance are improved, the far-infrared blocking ability is strong, and the effect of good resistance

Active Publication Date: 2019-11-12
科泽新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of agricultural greenhouse films, we can eat our favorite fruits and vegetables on the dining table all year round. Plastic agricultural greenhouse films are more and more recognized and loved by growers, but the requirements for greenhouse films are also increasing. Due to the material formula of traditional agricultural films such as PE film and PVC film, their thermal insulation performance and tensile strength are limited and their light transmission is poor. After a period of use, dustproof performance will decline and electrostatic adsorption Serious, easy to stick to dust, easy to age, weak far-infrared blocking ability and other problems

Method used

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  • Composite film for agricultural greenhouses and preparation method of composite film
  • Composite film for agricultural greenhouses and preparation method of composite film
  • Composite film for agricultural greenhouses and preparation method of composite film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] See figure 1 Shown, the preparation method step of a kind of agricultural greenhouse composite film is as follows:

[0032] Step S01, preparing the outer reinforcing layer 1, which includes:

[0033] Preparation of the external reinforcement layer mixture: the external reinforcement layer mixture consists of 83 parts by weight of terephthalic acid, 32 parts of ethylene glycol ester, 0.9 part of catalyst, 0.7 part of stabilizer, 0.5 part of antistatic agent and 0.5 part of silicon-containing The masterbatch mixture is uniformly mixed;

[0034] Cast sheet: Put the mixed material of the outer reinforcement layer into the reactor, undergo polymerization reaction and heat to melt, extrude the melt to the die head through the extruder and pass through the chilled roll to form the cast sheet;

[0035] Stretching: Stretching the cast sheet through longitudinal stretching equipment, then entering transverse stretching equipment for stretching, and finally winding to obtain the...

Embodiment 2

[0047] See figure 1 Shown, the preparation method step of a kind of agricultural greenhouse composite film is as follows:

[0048] Step S01, preparing the outer reinforcing layer 1, which includes:

[0049] Preparation of the external reinforcement layer mixture: the external reinforcement layer mixture consists of 85 parts by weight of terephthalic acid, 33 parts of ethylene glycol ester, 1 part of catalyst, 0.9 part of stabilizer, 0.7 part of antistatic agent and 0.7 part of silicon-containing The masterbatch mixture is uniformly mixed;

[0050] Cast sheet: Put the reinforced layer mixture into the reactor, undergo polymerization reaction and heat to melt, extrude the melt to the die through the extruder and pass through the chilled roll to form the cast sheet;

[0051] Stretching: Stretching the cast sheet through longitudinal stretching equipment, then entering transverse stretching equipment for stretching, and finally winding to obtain the outer reinforcement layer 1;

...

Embodiment 3

[0063] See figure 1 Shown, the preparation method step of a kind of agricultural greenhouse composite film is as follows:

[0064] Step S01, preparing the outer reinforcing layer 1, which includes:

[0065] Preparation of the external reinforcement layer mixture: the external reinforcement layer mixture consists of 83 parts by weight of terephthalic acid, 32 parts of ethylene glycol ester, 0.9 part of catalyst, 0.7 part of stabilizer, 0.5 part of antistatic agent and 0.5 part of silicon-containing The masterbatch mixture is uniformly mixed;

[0066] Cast sheet: Put the mixed material of the outer reinforcement layer into the reactor, undergo polymerization reaction and heat to melt, extrude the melt to the die head through the extruder and pass through the chilled roll to form the cast sheet;

[0067] Stretching: Stretching the cast sheet through longitudinal stretching equipment, then entering transverse stretching equipment for stretching, and finally winding to obtain the...

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Abstract

The invention discloses a composite film for agricultural greenhouses and a preparation method of the composite film. The preparation method includes the following steps: S01, preparing a mixed material for an outer reinforcement layer, putting the mixed material for the outer reinforcement layer into a reaction kettle, heating and melting the mixed material after a polymerization reaction, extruding melts from a chilling roll by an extruder to form a casting piece, and pulling the casting piece to obtain the outer reinforcement layer; S02, preparing mixed materials for a defogging and dripping layer, including an inner mixed material, a middle mixed material and an outer mixed material, adding the three mixed materials into a hopper of a three-layer co-extrusion film blowing machine to extrude from a three-layer co-extrusion die head, and performing blowing and cooling by a cooling fan to obtain the defogging and dripping layer; S03, bonding the outer reinforcement layer with an outerlayer of the defogging and dripping layer by a bonding machine through a polyurethane adhesive to obtain the composite film for the agricultural greenhouses. The problems of conventional agriculturalfilms, such as limited heat insulation performance, low strength, proneness to ageing and low light transmission, are solved.

Description

technical field [0001] The invention relates to the technical field of agricultural plastic films, in particular to an agricultural greenhouse composite film and a preparation method thereof. Background technique [0002] With the continuous development of agricultural greenhouse films, we can eat our favorite fruits and vegetables on the dining table all year round. Plastic agricultural greenhouse films are more and more recognized and loved by growers, but the requirements for greenhouse films are also increasing. Due to the material formula of traditional agricultural films such as PE film and PVC film, their thermal insulation performance and tensile strength are limited and their light transmission is poor. After a period of use, dustproof performance will decline and electrostatic adsorption Serious, easy to stick to dust, easy to age, weak far-infrared blocking ability and other problems. Contents of the invention [0003] Aiming at the current state of the art, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G9/14B32B37/12B32B7/12B32B27/32B32B27/06B29D7/01C08G63/183C08J5/18C08L23/08C08L23/06C08L67/02
CPCA01G9/1438B29D7/01B32B7/12B32B27/06B32B27/08B32B27/32B32B27/327B32B37/12B32B2307/21B32B2307/30B32B2307/40B32B2307/54B32B2307/71B32B2410/00C08G63/183C08J5/18C08J2323/08C08J2367/02C08J2423/06Y02A40/25
Inventor 谢鑫周洋韦大洋李永勃
Owner 科泽新材料股份有限公司
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