CN101003720A - Multifunctional three layers combined antifog film of polythene for shed - Google Patents
Multifunctional three layers combined antifog film of polythene for shed Download PDFInfo
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- CN101003720A CN101003720A CNA2007100552524A CN200710055252A CN101003720A CN 101003720 A CN101003720 A CN 101003720A CN A2007100552524 A CNA2007100552524 A CN A2007100552524A CN 200710055252 A CN200710055252 A CN 200710055252A CN 101003720 A CN101003720 A CN 101003720A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/25—Greenhouse technology, e.g. cooling systems therefor
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Abstract
This invention relates to a three-layer multifunctional anti-fogging film of polyethylene. The film has three layers, with the thickness ratio of 3:4:3. All the three layers are based on polyethylene, and the anti-fogging agent is added in the innermost layer. The film is molded by co-extrusion blowing, has good anti-fogging performance and low cost, and can inhibit crop diseases, increase crop illumination intensity, improve crop quality, and increase crop yield.
Description
Technical field
The present invention relates to a kind of agricultural canopy film, the particularly a kind of agricultural polyethylene multifunctional three layers combined antifog canopy film that can eliminate fog in the greenhouse.
Background technology
As everyone knows, in the novel polyethylene functional greenhouse film is produced, adopt the method for adding drip agent, make film in certain time limit, have anti-drop property, cover this film and improve 6%~10% than general thin transmittance, particularly lower at intensity of sunshine, that the sunshine duration is short early spring and autumn and winter season, the raising of transmittance can make crop that tangible effect of increasing production is arranged.But in actual application, drip has but brought fog.There is research report to point out " in heliogreenhouse, to be full of under the situation of fog, not reduce by 10%~12% when intensity of illumination ratio near the ground has mist, influence photosynthesis, and make crop that disease take place.Cover fog dispersal canopy film and can not only improve the intensity of illumination of crop, and can alleviate crop pest, make growth and development of plants good, gather in advance, improve the quality." therefore, along with the rapid expansion of China's heliogreenhouse cultivated area, the canopy film with single drip function can not satisfy the demand in market, gardening scientific and technological circle have proposed the principle of " drip must be antifog ".
At present, the antifogging agent of dosing in agricultural polyethylene film mostly is the organic fluorine tensio-active agent of external import, and price is higher.Fluorine surfactant has high surface on the one hand, but simultaneously to not having slow releasing function such as oiliness molecules such as drip agents, even in the polyethylene green house film of three-layer composite structure, drip agent also can have separating out of a great deal of at the film superficies, thereby transparency, the anti-dust performance of canopy film produced tangible detrimentally affect; On the other hand, polyethylene green house film adopts fluorine surfactant as antifogging agent, with different drip agent and use the fit effect that is showed to have susceptibility, the selection of canopy film drip agent is required harsh, has limited the range of application of drip agent in polyethylene green house film.
Summary of the invention
The object of the present invention is to provide a kind of multifunctional three layers combined antifog film of polythene for shed that can eliminate the indoor fog of canopy, it is relatively poor to have solved existing antifog canopy film price transparency and anti-dust performance higher, the canopy film, and the selection of canopy film drip agent is required harshness, limited the problems such as range of application of drip agent in polyethylene green house film.
Technical scheme of the present invention is: the canopy film is a three-layer composite structure, antifogging agent is used for internal layer, threeply degree ratio is 3: 4: 3, each layer is matrix with the polyethylene, adding the functional agent cooperation in proportion forms, through three-layer co-extruded blow molding process machine-shaping, this three-layer co-extruded blow molding process is a known technology, and the ratio of weight and number of its each layer formula is as follows:
Outer layer formula (by ratio of weight and the number of copies):
30~60 parts of 30~60 parts of linear low density polyethylene resins of ldpe resin
1.6~2.4 parts of 4~6 parts of ethylene-vinyl acetate resins of linear low density polyethylene powdered resin
622 0.34~0.5 part of 0.6~0.9 part of photostabilizer of drip agent
0.00096~0.00144 part of 0.08~0.13 part of amine hydroxybenzene of oxidation inhibitor B215
0.4~0.6 part of talcum powder
Middle layer formula (by ratio of weight and the number of copies):
30~60 parts of 30~60 parts of linear low density polyethylene resins of ldpe resin
3.2~4.8 parts of 3.2~4.8 parts of ethylene-vinyl acetate resins of linear low density polyethylene powdered resin
622 0.34~0.5 part of 1.28~1.92 parts of photostabilizer of drip agent
0.8~1.2 part of 0.084~0.126 part of talcum powder of oxidation inhibitor B215
Interior layer formula (by ratio of weight and the number of copies):
30~60 parts of 30~60 parts of linear low density polyethylene resins of ldpe resin
3.2~4.8 parts of 7.68~11.52 parts of ethylene-vinyl acetate resins of linear low density polyethylene powdered resin
0.4~0.6 part of 1.28~1.92 parts of organosilicon antifogging agent of drip agent
0.084~0.126 part of 622 0.34~0.5 part of oxidation inhibitor B215 of photostabilizer
0.8~1.2 part of talcum powder.
Beneficial effect of the present invention is:
1, dose efficient antifogging agent in the canopy film, give the film anti-fog function, suppress and alleviate crop pest, obviously improve the intensity of illumination of crop, the indoor quick heating of canopy can improve crop quality, plays the effect of increasing both production and income;
2, adopt organic silicon surfactant as antifogging agent, good with all kinds of drip agent fiting effects, the selected variety range of drip agent in the manufacturing of canopy film is wide, and canopy film initial stage, drip effect equilibrium in late period; Film transparency height, anti-dust performance is outstanding;
3, adopt polyethylene to make base resin, organic silicon surfactant is an antifogging agent, and the plastic sheeting for farm use cost is low, price suitable, helps promotion and application; Practical.
Embodiment:
The present invention can adopt following raw material:
Ldpe resin: its melt index is the ldpe resin that domestic and international each ethene company of 0.3~0.7g/10min produces.
Linear low density polyethylene resin: its melt index is the linear low density polyethylene resin that domestic and international each ethene company of 0.7~1.0g/10min produces.
Ethylene-vinyl acetate resin: its VA content is the film-grade ethylene-vinyl acetate resin of domestic and international each ethene company supply of 12%~14%.
The linear low density polyethylene powdered resin: its melt index is the linear low density polyethylene powdered resin that domestic and international each ethene company of 1.5g/10min produces.
The production and supply of photostabilizer 622 Switzerland vapour Bagong departments.
The production and supply of oxidation inhibitor B215 Beijing Big Dipper auxiliary chemicals company limited.
Drip agent: be the mixture of fatty acids polyol ester, polyoxyethylene alkyl amine, macrogol ester, the supply of lake, green hill, Linan, Zhejiang Province plastics chemical industry company limited.
Antifogging agent is to be the tensio-active agent of oleophilic group and hydrophilic radical with the siloxanes, by the Fine Chemical Works supply of Jilin Province Baishan Xifeng Plastic Co., Ltd..
Talcum powder: its fineness is 2500 orders, is supplied by Lishu County, Jilin Province talcum powder factory.
Embodiment 1:
Canopy film of the present invention is a three-layer composite structure, antifogging agent is used for internal layer, threeply degree ratio is 3: 4: 3, each layer is matrix with the polyethylene, adding the functional agent cooperation in proportion forms, through three-layer co-extruded blow molding process machine-shaping, this three-layer co-extruded blow molding process is a known technology, and the ratio of weight and number of its each layer formula is as follows:
Outer layer formula (by ratio of weight and the number of copies):
Melt index is 45.6894 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 45.6894 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 4.91 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 1.97 parts of 12~14% ethylene-vinyl acetate resins
622 0.41 parts of 0.74 part of photostabilizers of drip agent
0.0012 part of 0.1 part of amine hydroxybenzene of oxidation inhibitor B215
0.49 part of 2500 order talcum powder
Middle layer formula (by ratio of weight and the number of copies):
Melt index is 44.6 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 44.6 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 3.88 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 3.88 parts of 12~14% ethylene-vinyl acetate resins
622 0.41 parts of 1.55 parts of photostabilizers of drip agent
0.97 part of 0.1 part of 2500 order talcum powder of oxidation inhibitor B215
Interior layer formula (by ratio of weight and the number of copies):
Melt index is 41.73 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 41.73 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 9.26 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 3.86 parts of 12~14% ethylene-vinyl acetate resins
0.48 part of 1.55 parts of organosilicon antifogging agent of drip agent
0.1 part of 622 0.41 parts of oxidation inhibitor B215 of photostabilizer
0.88 part of 2500 order talcum powder.
Embodiment 2:
Canopy film of the present invention is a three-layer composite structure, antifogging agent is used for internal layer, threeply degree ratio is 3: 4: 3, each layer is matrix with the polyethylene, adding the functional agent cooperation in proportion forms, through three-layer co-extruded blow molding process machine-shaping, this three-layer co-extruded blow molding process is a known technology, and the ratio of weight and number of its each layer formula is as follows:
Outer layer formula (by ratio of weight and the number of copies):
Melt index is 32.192 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 55.783 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 4 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 1.6 parts of 12~14% ethylene-vinyl acetate resins
622 0.34 parts of 0.6 part of photostabilizers of drip agent
0.001 part of 0.084 part of amine hydroxybenzene of oxidation inhibitor B215
0.4 part of 2500 order talcum powder
Middle layer formula (by ratio of weight and the number of copies):
Melt index is 36.4 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 54.6 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 3.23 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 3.23 parts of 12~14% ethylene-vinyl acetate resins
622 0.35 parts of 1.3 parts of photostabilizers of drip agent
0.8 part of 0.09 part of 2500 order talcum powder of oxidation inhibitor B215
Interior layer formula (by ratio of weight and the number of copies):
Melt index is 34.504 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 51.756 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 7.6 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 3.2 parts of 12~14% ethylene-vinyl acetate resins
0.4 part of 1.3 parts of organosilicon antifogging agent of drip agent
0.09 part of 622 0.35 parts of oxidation inhibitor B215 of photostabilizer
0.8 part of 2500 order talcum powder.
Embodiment 3:
Canopy film of the present invention is a three-layer composite structure, antifogging agent is used for internal layer, threeply degree ratio is 3: 4: 3, each layer is matrix with the polyethylene, adding the functional agent cooperation in proportion forms, through three-layer co-extruded blow molding process machine-shaping, this three-layer co-extruded blow molding process is a known technology, and the ratio of weight and number of its each layer formula is as follows:
Outer layer formula (by ratio of weight and the number of copies):
Melt index is 59.5 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 30 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 6 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 2.4 parts of 12~14% ethylene-vinyl acetate resins
622 0.48 parts of 0.9 part of photostabilizers of drip agent
0.001 part of 0.12 part of amine hydroxybenzene of oxidation inhibitor B215
0.599 part of 2500 order talcum powder
Middle layer formula (by ratio of weight and the number of copies):
Melt index is 43.5 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 43.5 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 4.7 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 4.7 parts of 12~14% ethylene-vinyl acetate resins
622 0.48 parts of 1.9 parts of photostabilizers of drip agent
1.1 parts of 0.12 part of 2500 order talcum powder of oxidation inhibitor B215
Interior layer formula (by ratio of weight and the number of copies):
Melt index is 40 parts of the ldpe resins of 0.3~0.7g/10min
Melt index is 40 parts of the linear low density polyethylene resins of 0.7~1.0g/10min
Melt index is 11.5 parts of the linear low density polyethylene powdered resins of 1.5g/10min
VA content is 4.2 parts of 12~14% ethylene-vinyl acetate resins
0.6 part of 1.9 parts of organosilicon antifogging agent of drip agent
0.1 part of 622 0.5 parts of oxidation inhibitor B215 of photostabilizer
1.2 parts of 2500 order talcum powder.
Claims (1)
1, a kind of multifunctional three layers combined antifog film of polythene for shed is characterized in that: the canopy film is a three-layer composite structure, and antifogging agent is used for internal layer, and threeply degree ratio is 3: 4: 3, and each layer formula is made up of the component of following portions by weight ratio:
Outer layer formula:
30~60 parts of 30~60 parts of linear low density polyethylene resins of ldpe resin
1.6~2.4 parts of 4~6 parts of ethylene-vinyl acetate resins of linear low density polyethylene powdered resin
622 0.34~0.5 part of 0.6~0.9 part of photostabilizer of drip agent
0.00096~0.00144 part of 0.08~0.13 part of amine hydroxybenzene of oxidation inhibitor B215
0.4~0.6 part of talcum powder
Middle layer formula:
30~60 parts of 30~60 parts of linear low density polyethylene resins of ldpe resin
3.2~4.8 parts of 3.2~4.8 parts of ethylene-vinyl acetate resins of linear low density polyethylene powdered resin
622 0.34~0.5 part of 1.28~1.92 parts of photostabilizer of drip agent
0.8~1.2 part of 0.084~0.126 part of talcum powder of oxidation inhibitor B215
Interior layer formula:
30~60 parts of 30~60 parts of linear low density polyethylene resins of ldpe resin
3.2~4.8 parts of 7.68~11.52 parts of ethylene-vinyl acetate resins of linear low density polyethylene powdered resin
0.4~0.6 part of 1.28~1.92 parts of organosilicon antifogging agent of drip agent
0.084~0.126 part of 622 0.34~0.5 part of oxidation inhibitor B215 of photostabilizer
0.8~1.2 part of talcum powder.
Priority Applications (1)
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CN2007100552524A CN101003720B (en) | 2007-01-22 | 2007-01-22 | Multifunctional three layers combined antifog film of polythene for shed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2007100552524A CN101003720B (en) | 2007-01-22 | 2007-01-22 | Multifunctional three layers combined antifog film of polythene for shed |
Publications (2)
Publication Number | Publication Date |
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CN101003720A true CN101003720A (en) | 2007-07-25 |
CN101003720B CN101003720B (en) | 2012-07-18 |
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CN101418096B (en) * | 2008-12-07 | 2011-04-20 | 山东农业大学 | Inner additive type blow molding agricultural long-acting non drip defogging film |
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CN102934594A (en) * | 2012-11-23 | 2013-02-20 | 青岛供八方塑料有限公司 | Constant-temperature self-cleaning agricultural greenhouse film and production method thereof |
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CN109130409A (en) * | 2018-07-31 | 2019-01-04 | 云南曲靖塑料(集团)有限公司 | A kind of three-layer co-extruded durable canopy film of high intensity and preparation method thereof |
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CN102077773A (en) * | 2009-11-28 | 2011-06-01 | C.I.化成株式会社 | Pear-peel shaped agricultural polyolefin film |
CN102369854A (en) * | 2011-08-25 | 2012-03-14 | 淄博职业学院 | High-performance PE/EVA (Polyurethane/Ethylene Vinyl Acetate) composite multifunctional greenhouse film |
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