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Film material for greenhouse and preparation method of film material

A technology of film materials and greenhouses, which is applied in the field of film materials for greenhouses and its preparation, can solve the problems affecting the growth of plants or vegetables in greenhouses, deformation and water evaporation, and low physical properties, achieving high tear strength, Prevents water loss, improves performance and quality

Inactive Publication Date: 2015-07-22
SUZHOU DINGLI PACKAGING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Technical problem to be solved: conventional film materials for greenhouses have poor airtightness, and their physical properties are low. After long-term use, deformation and water evaporation will occur, which will affect the growth of plants or vegetables in the greenhouse. The present invention The purpose is to provide a film material for greenhouses with high physical strength and good air tightness and its preparation method

Method used

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  • Film material for greenhouse and preparation method of film material

Examples

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Comparison scheme
Effect test

Embodiment 1

[0044] (1) Start the high-speed mixer, and add 62 parts of PE, 30 parts of PVC, 10 parts of polyethylene glycol diacrylate, 2 parts of methyltriacetoxysilane, trimethyl 6 parts of siloxysilicate, 9 parts of poly-1,4-butylene adipate, 1 part of polyglycerol ricinoleate, 2 parts of triethyl citrate, add the above materials and mix at high speed until uniform; (2) Extrude the uniformly mixed material with a twin-screw extruder and perform extrusion granulation. The extrusion temperatures of the twin-screw extruder are: the temperature of the first stage is 169 ° C, and the temperature of the second stage is 174°C, the temperature of the third stage is 193°C, the temperature of the fourth stage is 202°C, the length-to-diameter ratio of the twin-screw extruder is 30:1, and the mixture is cut into pellets after twin-screw extrusion; (3) blown film The machine plasticizes the material in step (2) and then extrudes it. When extruding after plasticization, the feeding temperature is 12...

Embodiment 2

[0046] (1) Start the high-speed mixer, and add 36 parts of PE, 55 parts of PVC, 4 parts of polyethylene glycol diacrylate, 6 parts of methyltriacetoxysilane, trimethyl 2 parts of siloxysilicate, 3 parts of poly-1,4-butylene adipate, 4 parts of polyglycerol ricinoleate, 0.5 part of triethyl citrate, add the above materials and mix at high speed (2) Use twin-screw extruder to extrude and granulate the mixed material after mixing evenly. 182°C, the temperature of the third stage is 188°C, the temperature of the fourth stage is 195°C, the length-to-diameter ratio of the twin-screw extruder is 20:1, and the mixture is cut into pellets after twin-screw extrusion; (3) blown film The machine plasticizes the material in step (2) and then extrudes it. When extruding after plasticization, the feeding temperature is 120°C, the compression plasticizing temperature is 155°C, and the head temperature is 165°C; (4) the step (3) The material is towed, the inflation ratio is 1:3, and the tract...

Embodiment 3

[0048](1) Start the high-speed mixer, and add 56 parts of PE, 50 parts of PVC, 5 parts of polyethylene glycol diacrylate, 5 parts of methyltriacetoxysilane, trimethyl 3 parts of siloxysilicate, 4 parts of poly-1,4-butylene adipate, 3 parts of polyglycerol ricinoleate, 1.6 parts of triethyl citrate, add the above materials and mix at high speed until uniform; (2) Extrude the uniformly mixed material with a twin-screw extruder and perform extrusion granulation. The extrusion temperatures of the twin-screw extruder are: the temperature of the first stage is 169 ° C, and the temperature of the second stage is 174°C, the temperature of the third stage is 193°C, the temperature of the fourth stage is 202°C, the length-to-diameter ratio of the twin-screw extruder is 30:1, and the mixture is cut into pellets after twin-screw extrusion; (3) blown film The machine plasticizes the material in step (2) and then extrudes it. When extruding after plasticization, the feeding temperature is 1...

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Abstract

The invention belongs to the field of plastic film materials, and relates to a film material for a greenhouse and a preparation method of the film material. The film material comprises PE (polyethylene), PVC (polyvinyl chloride), polyethylene glycol diacrylate, methyltriacetoxysilane, trimethylsiloxysilicate, polyethylene adipate-1,4-glycol, polyglycerol polyricinoleate and triethyl citrate. The preparation method comprises the following steps that (1) a high-speed mixer is started and the materials are added for high-speed uniform mixing; (2) extruding granulation is performed by a twin-screw extruder; (3) the materials are plasticized and then extruded; (4) the materials are pulled; and (5) the materials are flattened to form the film material for the greenhouse. The prepared film material for the greenhouse has good tensile strength, tearing strength and air tightness.

Description

technical field [0001] The invention belongs to the field of film materials, and relates to a film material and a preparation method thereof, in particular to a film material for greenhouses and a preparation method thereof. Background technique [0002] At present, there are four main types of greenhouse film materials commonly used in my country: the first is polyvinyl chloride (PVC) film; the second is polyethylene (PE) film; the third is ethylene-vinyl acetate copolymer film ; The fourth is dimming agricultural film. These types of shed films have similarities and differences in properties, so the use effects are also different. Polyvinyl chloride (PVC) shed film has good thermal insulation, light transmission and weather resistance, is soft and easy to shape, and is suitable as the outer covering of greenhouses, greenhouses and small and medium-sized sheds. Polyethylene (PE) shed film is light in texture, soft, easy to shape, good in light transmission, non-toxic, suit...

Claims

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Application Information

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IPC IPC(8): C08L23/06C08L27/06C08K5/5419C08K5/5415B29C47/92B29C55/28B29C48/92
CPCC08L23/06B29C48/92B29C55/28B29C2948/92209C08L27/06C08L2203/16C08L2205/025C08L2205/035C08L71/02C08L67/02C08K5/5419C08K5/5415
Inventor 顾建芳
Owner SUZHOU DINGLI PACKAGING
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