CN103756000A - Anti-fogging polyethylene shed plastic film and preparation method thereof - Google Patents
Anti-fogging polyethylene shed plastic film and preparation method thereof Download PDFInfo
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- CN103756000A CN103756000A CN201410008522.6A CN201410008522A CN103756000A CN 103756000 A CN103756000 A CN 103756000A CN 201410008522 A CN201410008522 A CN 201410008522A CN 103756000 A CN103756000 A CN 103756000A
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Abstract
The invention provides an anti-fogging polyethylene shed plastic film and a preparation method thereof. The anti-fogging polyethylene shed plastic film is prepared from a polyethylene membrane main body and a grafting material, wherein the grafting material is a hydrophilic monomer and accounts for 0.5-3wt% of the grafted polyethylene membrane. The anti-fogging polyethylene shed plastic film provided by the invention has the advantages that the modified polyethylene membrane is used as a cover film of a greenhouse and various sheds, so that the adhesive rate of waterdrops on the membrane is reduced and burn caused by gathered waterdrops on plants, crops or drip irrigation belts is reduced.
Description
Technical field
The present invention relates to the anti-droplet technical field of canopy film, especially relate to Polyethylene Anti-fogging Shed Film and preparation method thereof.
Background technology
A kind of situation of the normal generation of agricultural canopy film, water vapor within it surface easily condenses into small droplets and atomization, and water droplet focuses on, and causes plant to burn and drip irrigation hose calcination perforation.
The method of the anti-droplet of modern plastics film mainly contains two kinds.An interior additive process, antifogging agent and resin-phase is mixing, masking then, many antifogging agent molecules are all contained on the inside of film and surface like this, make face have anti-droplet.But due to be everlasting high temperature compacted under processing of plastics, so the antifogging agent that interior additive process is used must be high temperature resistant, not with other additive reactions, do not affect the performance of film, the alternative of resin and antifogging agent is little.
Another kind is outer painting method, plastic cover that will anti-droplet is coated to the coating that contains antifogging agent, but coating is insecure, affects anti-droplet effect.Canopy film is generally got by lyophobic dust preparation, and the globule is attached to its surface, and contact angle is larger.Antifogging agent contains hydrophilic group, and water droplet can be laid on film, along film, stays, and therefore makes canopy film have the performance of anti-droplet.
At present, additive process in domestic generally use, the research of outer painting technology is less.It is loaded down with trivial details that outer painting method exists process, and difficulty is larger, and after coating, antifogging agent is fixed the shortcomings such as not firm.
Summary of the invention
The technical problem to be solved in the present invention is to provide Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is hydrophilic monomer.
Preferably, described graft materials is to be selected from a kind of in senecioate-hydroxyl ethyl ester, vinylformic acid monoglyceride or acrylamide.
After grafting, being grafted to the weight percent that described graft materials above described polyethylene film body accounts for the polyethylene film after grafting is 0.5%～3%.After grafting, if proportion lower than 0.5%, after grafting the wetting ability of polyethylene film a little less than, the globule cannot tile on film surface or flow down along film in the short period of time; If proportion is higher than 3%, after grafting, the transmittance of polyethylene film material reduces, and under film, plant growth is affected.
The preparation method of Polyethylene Anti-fogging Shed Film, comprises the steps:
(1) take the volume ratio of dehydrated alcohol and deionized water is 1:4 preparation alcohol solution;
(2) photosensitizers and described graft materials are added in described alcohol solution, after dissolving completely, obtain mixing solutions;
(3) described polyethylene film body is joined in described mixing solutions, after polyethylene film body complete wetting, adopt the method for nitrogen replacement to remove the oxygen in described mixing solutions;
(4), under nitrogen protection condition, the method with ultraviolet light irradiation, makes described graft materials be grafted to the surface of described polyethylene film body.
Preferably, take the quality of described mixing solutions is that absolutely the add-on of described graft materials is 0.2%～1%.
Preferably, described photosensitizers is benzophenone, and the quality of described mixing solutions of take is that absolutely the add-on of benzophenone is 0.5%～0.8%.
Preferably, described in step (4), the time of ultraviolet light irradiation is 2～20min.
The beneficial effect that the present invention has is:
1, the preparation method of Polyethylene Anti-fogging Shed Film involved in the present invention belongs to outer painting method, compare with traditional outer painting method, surface grafting method makes graft materials and polyethylene film body surface have rapidly linking of chemical bond by uv irradiation, graft materials can be more stable be attached to film surface, make the antifogging property of film more lasting.Polyethylene film after modification, for the mulch film of greenhouse and various canopies, has reduced the adhesive rate of water droplet on film, has reduced water droplet and has focused on burning that plant, farm crop or drip irrigation zone are caused.
2, uv-radiation Graft Method, by product is few, pollutes little.
3, the graft reaction time short, material surface grafting is even, less on the light transmission impact of film.
Accompanying drawing explanation
Fig. 1 is in specific embodiment 1, the infrared spectrum of polyethylene film before grafting and after grafting.
Fig. 2 is in specific embodiment 1, the scanning electron microscope picture of polyethylene film body before grafting.
Fig. 3 is in specific embodiment 1, the scanning electron microscope picture of polyethylene film after grafting.
Fig. 4 is in specific embodiment 5, the infrared spectrum of polyethylene film before grafting and after grafting.
Fig. 5 is in specific embodiment 5, the scanning electron microscope picture of polyethylene film body before grafting.
Fig. 6 is in specific embodiment 5, the scanning electron microscope picture of polyethylene film after grafting.
Fig. 7 is in specific embodiment 9, the infrared spectrum of polyethylene film before grafting and after grafting.
Fig. 8 is in specific embodiment 9, the scanning electron microscope picture of polyethylene film body before grafting.
Fig. 9 is in specific embodiment 9, the scanning electron microscope picture of polyethylene film after grafting.
Embodiment
Embodiment 1
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is senecioate-hydroxyl ethyl ester, and molecular formula is
The preparation method of Polyethylene Anti-fogging Shed Film, comprises the following steps:
(1) take the volume ratio of dehydrated alcohol and deionized water and be the alcohol solution of 1:4 preparation 80mL to add senecioate-hydroxyl ethyl ester and benzophenone, obtain mixing solutions.Wherein, the massfraction that senecioate-hydroxyl ethyl ester accounts for mixing solutions is 0.3%, and the massfraction that benzophenone accounts for mixing solutions is 0.5%.
(2) in above-mentioned mixing solutions, add polyethylene film body 2.0g, logical nitrogen is removed the oxygen in mixing solutions;
(3), under nitrogen protection condition, after ultraviolet irradiation 12min, the polyethylene film body after grafting is taken out;
(4) in dehydrated alcohol, wash away unreacted, to be attached to polyethylene film body surface senecioate-hydroxyl ethyl ester and homopolymer, vacuum-drying is weighed, and the weight that makes senecioate-hydroxyl ethyl ester grafted polyethylene film is 2.01g.
Embodiment 2
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is senecioate-hydroxyl ethyl ester, and molecular formula is
The difference of preparation method and specific embodiment 1 is only that the massfraction that senecioate-hydroxyl ethyl ester accounts for mixing solutions is 0.5%, and other are identical with specific embodiment 1, and the weight of the senecioate-hydroxyl ethyl ester grafted polyethylene film finally making is 2.02g.
Embodiment 3
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is senecioate-hydroxyl ethyl ester, and molecular formula is
The difference of preparation method and specific embodiment 1 is only that the massfraction that senecioate-hydroxyl ethyl ester accounts for mixing solutions is 0.8%, and other are identical with specific embodiment 1, and the weight of the senecioate-hydroxyl ethyl ester grafted polyethylene film finally making is 2.04g.
Embodiment 4
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is senecioate-hydroxyl ethyl ester, and molecular formula is
The difference of preparation method and specific embodiment 1 is only that the massfraction that senecioate-hydroxyl ethyl ester accounts for mixing solutions is 1.2%, and other are identical with specific embodiment 1, and the weight of the senecioate-hydroxyl ethyl ester grafted polyethylene film finally making is 2.06g.
The contact angle of described polyethylene film body is 105 °, and transmittance is 85%.After grafting, the performance perameter of polyethylene film is as shown in the table:
Wherein, the mensuration of percentage of grafting adopts weighting method, and its method of calculation are:
G=(W
1-W
0)/W
0*100%
In formula, W
0and W
1be respectively before grafting and grafting after the weight of polyethylene film.
Embodiment 5
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is vinylformic acid monoglyceride, and molecular formula is
The preparation method of Polyethylene Anti-fogging Shed Film, comprises the following steps:
(1) take the volume ratio of dehydrated alcohol and deionized water and be the alcohol solution of 1:4 preparation 100mL to add vinylformic acid monoglyceride and benzophenone, obtain mixing solutions.Wherein, the massfraction that vinylformic acid monoglyceride accounts for mixing solutions is 0.3%, and the massfraction that benzophenone accounts for mixing solutions is 0.6%.
(2) in above-mentioned mixing solutions, add polyethylene film body 2.0g, logical nitrogen is removed the oxygen in mixing solutions;
(3), under nitrogen protection condition, after ultraviolet irradiation 8min, the polyethylene film body after grafting is taken out;
(4) in dehydrated alcohol, wash away unreacted, to be attached to the polyethylene film body after grafting surperficial vinylformic acid monoglyceride and homopolymer, vacuum-drying is weighed, and the weight that makes vinylformic acid monoglyceride grafted polyethylene film is to be 2.014g.
Embodiment 6
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is vinylformic acid monoglyceride, and molecular formula is
The difference of preparation method and specific embodiment 5 is only that the massfraction that vinylformic acid monoglyceride accounts for mixing solutions is 0.5%, and other are identical with specific embodiment 5, and the weight of the vinylformic acid monoglyceride grafted polyethylene film finally making is 2.024g.
Embodiment 7
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is vinylformic acid monoglyceride, and molecular formula is
The difference of preparation method and specific embodiment 5 is only that the massfraction that vinylformic acid monoglyceride accounts for mixing solutions is 0.8%, and other are identical with specific embodiment 5, and the weight of the vinylformic acid monoglyceride grafted polyethylene film finally making is 2.048g.
Embodiment 8
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is vinylformic acid monoglyceride, and molecular formula is
The difference of preparation method and specific embodiment 5 is only that the massfraction that vinylformic acid monoglyceride accounts for mixing solutions is 1.2%, and other are identical with specific embodiment 5, and the weight of the vinylformic acid monoglyceride grafted polyethylene film finally making is 2.07g.
The contact angle of described polyethylene film body is 105 °, and transmittance is 85%.After grafting, the performance perameter of polyethylene film is as shown in the table:
Embodiment 9
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is acrylamide, and molecular formula is
The preparation method of Polyethylene Anti-fogging Shed Film, comprises the following steps:
(1) take the volume ratio of dehydrated alcohol and deionized water and be the alcohol solution of 1:4 preparation 100mL to add acrylamide and benzophenone, obtain mixing solutions.Wherein, the massfraction of acrylamide mixing solutions is 0.3%, and the massfraction that benzophenone accounts for mixing solutions is 0.8%.
(2) in above-mentioned mixing solutions, add polyethylene film body 2.0g, logical nitrogen is removed the oxygen in mixing solutions;
(3), under nitrogen protection condition, after ultraviolet irradiation 8min, the polyethylene film body after grafting is taken out;
(4) in dehydrated alcohol, wash away unreacted, to be attached to the polyethylene film body after grafting surperficial acrylamide and homopolymer, vacuum-drying is weighed, and the weight that makes acrylamide graft polyethylene film is 2.006g.
Embodiment 10
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is acrylamide, and molecular formula is
The difference of preparation method and specific embodiment 9 is only that the mass percent that the amount of acrylamide accounts for mixing solutions is 0.5%, other identical with specific embodiment 9, and the weight of the polyethylene film of the acrylamide graft finally making is 2.016g.
Embodiment 11
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is acrylamide, and molecular formula is
The difference of preparation method and specific embodiment 9 is only that the mass percent that the amount of acrylamide accounts for mixing solutions is 0.8%, other identical with specific embodiment 9, and the weight of the polyethylene film of the acrylamide graft finally making is 2.032g.
Embodiment 12
Polyethylene Anti-fogging Shed Film, by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is acrylamide, and molecular formula is
The difference of preparation method and specific embodiment 9 is only that the mass percent that the amount of acrylamide accounts for mixing solutions is 1.2%, other identical with specific embodiment 9, and the weight of the polyethylene film of the acrylamide graft finally making is 2.044g.
The contact angle of described polyethylene film body is 105 °, and transmittance is 85%.After grafting, the performance perameter of polyethylene film is as shown in the table:
Claims (6)
1. Polyethylene Anti-fogging Shed Film, is characterized in that: by comprising that following material is prepared from:
Polyethylene film body and graft materials;
Described graft materials is hydrophilic monomer;
After grafting, being grafted to the weight percent that described graft materials above described polyethylene film body accounts for the polyethylene film after grafting is 0.5%～3%.
2. Polyethylene Anti-fogging Shed Film according to claim 1, is characterized in that: described graft materials is to be selected from a kind of in senecioate-hydroxyl ethyl ester, vinylformic acid monoglyceride or acrylamide.
3. the preparation method of Polyethylene Anti-fogging Shed Film as claimed in claim 1, is characterized in that: comprise the steps:
(1) take the volume ratio of dehydrated alcohol and deionized water is 1:4 preparation alcohol solution;
(2) photosensitizers and described graft materials are added in described alcohol solution, obtain mixing solutions;
(3) described polyethylene film body is joined in described mixing solutions, remove the oxygen in described mixing solutions;
(4), under nitrogen protection condition, the method with ultraviolet light irradiation, makes described graft materials be grafted to the surface of described polyethylene film body.
4. the preparation method of Polyethylene Anti-fogging Shed Film according to claim 3, is characterized in that: the quality of described mixing solutions of take is that absolutely the add-on of described graft materials is 0.2%～1%.
5. the preparation method of Polyethylene Anti-fogging Shed Film according to claim 3, is characterized in that: described photosensitizers is benzophenone, and the quality of described mixing solutions of take is that absolutely the add-on of benzophenone is 0.5%～0.8%.
6. the preparation method of Polyethylene Anti-fogging Shed Film according to claim 3, is characterized in that: the time of ultraviolet light irradiation described in step (4) is 2～20min.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410008522.6A CN103756000A (en) | 2014-01-02 | 2014-01-02 | Anti-fogging polyethylene shed plastic film and preparation method thereof |
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| CN201410008522.6A CN103756000A (en) | 2014-01-02 | 2014-01-02 | Anti-fogging polyethylene shed plastic film and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107494072A (en) * | 2017-10-11 | 2017-12-22 | 邢志强 | Cool net |
| CN109181076A (en) * | 2018-09-20 | 2019-01-11 | 黄旭东 | A kind of preparation method of mould proof antifog polyethylene preservative film |
| CN117901380A (en) * | 2024-03-19 | 2024-04-19 | 保视丽(上海)新材料科技有限公司 | Preparation process of low-migration clean barrel |
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| CN1607213A (en) * | 2003-10-14 | 2005-04-20 | 北京化工大学 | One-step method of ultraviolet light initiation graft for high molecular material surface |
| CN1654519A (en) * | 2005-03-03 | 2005-08-17 | 北京化工大学 | Reaction liquid for modifying polymer film and modifying method |
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2014
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1607213A (en) * | 2003-10-14 | 2005-04-20 | 北京化工大学 | One-step method of ultraviolet light initiation graft for high molecular material surface |
| CN1654519A (en) * | 2005-03-03 | 2005-08-17 | 北京化工大学 | Reaction liquid for modifying polymer film and modifying method |
Non-Patent Citations (2)
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107494072A (en) * | 2017-10-11 | 2017-12-22 | 邢志强 | Cool net |
| CN109181076A (en) * | 2018-09-20 | 2019-01-11 | 黄旭东 | A kind of preparation method of mould proof antifog polyethylene preservative film |
| CN117901380A (en) * | 2024-03-19 | 2024-04-19 | 保视丽(上海)新材料科技有限公司 | Preparation process of low-migration clean barrel |
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Application publication date: 20140430 |