CN103740220A - High-temperature-resistant burning-resistant under-film drip irrigation zone coating and preparation method thereof - Google Patents
High-temperature-resistant burning-resistant under-film drip irrigation zone coating and preparation method thereof Download PDFInfo
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- CN103740220A CN103740220A CN201310663834.6A CN201310663834A CN103740220A CN 103740220 A CN103740220 A CN 103740220A CN 201310663834 A CN201310663834 A CN 201310663834A CN 103740220 A CN103740220 A CN 103740220A
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- acrylate copolymer
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Abstract
The invention relates to a high-temperature-resistant burning-resistant under-film drip irrigation zone coating which is prepared from the following raw materials: by mass, 92-94% of a fluorine-containing acrylate copolymer solution, 6-8% of a modified hollow glass bead and diphenyl ketone accounting for 2-4% of the fluorine-containing acrylate copolymer solution. The invention also discloses a preparation method of the coating. The coating has good performances of high temperature resistance and sun burn resistance.
Description
Technical field
The present invention relates to manufacture field, drip irrigation zone, relate in particular to a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating and preparation method thereof.
Background technology
Under-film drip irrigation technology is a kind of Novel irrigation technology that collection film coating technique combines with drip irrigation technique, is also extension and the in-depth of film-mulching cultivation technique.Under-film drip irrigation technology applying at home approaches 10 years, application area is also expanding year by year, various problems have in use been there are, wherein under normal film drip irrigation zone easily burn be distinct issues the most, because under-film drip irrigation band is under solar light irradiation, the globule condenses under film, " convex lens effect " that the globule forms causes burn to drip irrigation zone, this phenomenon shows as surface, drip irrigation zone and occurs burning fusion hole, cause Ci water, thereby had a strong impact on operation and the quality of under-film drip irrigation system.
Existing common nonmetal high temperature resistant, anti-calcination material is a lot, such as polypropylene (pp), acrylonitrile-butadiene-styrene copolymer (ABS), polycarbonate (PC), polymeric amide (PA) etc.The research of external antagonism calcination, materials with high melting point is relatively ripe, from dystectic metal high temperature material to ceramic high-temperature resistant material and nonmetal high temperature material have deep research.But at present domestic existing coating quality is not high, and ability that under-film drip irrigation band is high temperature resistant, the anti-sun is burnt, is to be only bonded in the surface of coated product by physical adsorption, poor durability, is having a strong impact on the quality of under-film drip irrigation system.
Summary of the invention
Technical problem to be solved by this invention is to provide high temperature resistant, the anti-calcination under-film drip irrigation band coating that a kind of wearing quality is good.
Another technical problem to be solved by this invention is to provide the preparation method of this drip irrigation zone coating.
For addressing the above problem, a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating of the present invention, is characterized in that: this coating is made by the raw material of following mass percent: 92 ~ 94% fluoro-acrylate copolymer solution, 6 ~ 8% modification hollow glass micropearls and account for the benzophenone of described fluoro-acrylate copolymer solution 2 ~ 4%; Wherein
Described fluoro-acrylate copolymer solution refers to the vinylformic acid of 1 ~ 2 equivalent 18 fat is mixed with vinylformic acid-2-hydroxyl ethyl ester of 2 ~ 4 equivalents, in temperature, be polyreaction under the condition of 60 ~ 65 ℃, obtain on side chain the acrylate copolymer intermediate A with great amount of hydroxy group; Then, described intermediate A slowly drops in the hexamethylene diisocyanate solution of 3 ~ 4 equivalents, and stir on dropping limit, limit, after reaction, obtains on side chain the acrylate copolymer intermediate B with a large amount of isocyanate groups; Secondly, in described intermediate B, add the fluorine alcohol of 3.6 ~ 4 equivalents, after reaction, obtain on side chain the acrylate copolymer intermediate C with a large amount of carbon fluorine chains; Finally, in described intermediate C, add ethanol that the mass concentration of 0.2 ~ 0.4 equivalent is 80 ~ 85% to carry out the solution of end capping gained;
Described modification hollow glass micropearl refers to the dehydrated alcohol of the silane resin acceptor kh-550 of 5 ~ 8g and 30mL is mixed with to solution, and be stirred to after solution clarification, this solution is slowly splashed in hollow glass micropearl, by strong stirring, make solution fully infiltrate described hollow glass micropearl, then by the water-bath that infiltrates hollow glass micropearl completely and put into 80 ~ 85 ℃, react 1.5 hours, obtain reaction product, this reaction product is cooled to room temperature by filtering, washing and get final product.
Described fluorine alcohol is that carbonatoms is less than or equal to 6 short carbon fluorine chain fluorine alcohol.
Described hollow glass micropearl refers to that diameter is the D-1210 type hollow glass micropearl of 5 ~ 300 microns.
The preparation method of a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as above, comprises the following steps:
(1) by proportioning, weigh;
(2) prepare fluoro-acrylate copolymer coating emulsion: in fluoro-acrylate copolymer solution, add benzophenone, after mixing, obtain fluoro-acrylate copolymer coating emulsion;
(3) coating emulsion spraying: dry drip irrigation zone pipe embryo is put into spray equipment, described fluoro-acrylate copolymer coating emulsion is injected to the tubing of described spray equipment, and by the atomizing nozzle in described spray equipment, described coating solution is sprayed on equably to the outside surface of described dry drip irrigation zone pipe embryo, and to make coat-thickness be 0.02 ~ 0.04mm;
(4) the described dry drip irrigation zone pipe embryo that 1 ~ 5min completes after spraying enters ultraviolet radiation device, open the trip switch of described ultraviolet radiation device, ultraviolet lamp tube is started working, and after 1.5s ~ 2s, in described fluoro-acrylate copolymer coating emulsion, adds modification hollow glass micropearl.
The spray equipment of described step in (3) comprises the housing I of hollow and with tubing, the atomizing nozzle of control valve; In described housing I, be provided with two cavitys by baffle for separating; The described housing I at each the cavity place in described two cavitys is provided with a described tubing; Several described atomizing nozzles of cambered surface spaced set tangentially in each cavity in described two cavitys, the atomizing nozzle in this each cavity and described tubing be corresponding being connected one by one.
The ultraviolet radiation device of described step in (4) comprises the housing II of hollow and is connected with the ultraviolet lamp tube of trip switch; Described housing II is provided with the outer dividing plate of inner surface for reflecting ultraviolet lamp, and in it, cambered surface is evenly arranged 6 described ultraviolet lamp tubes vertically.
The present invention compared with prior art has the following advantages:
1, fluoro-acrylate copolymer of the present invention has been selected the fluorocarbon containing short fluorocarbon chain (Rf≤6) of environmental protection, can be by natural degradation, toxic Perfluorocaprylic Acid and perfluoro octyl sulfonic acid be can not decomposite, environmental pollution, biological accumulation and harm caused.
2, the present invention adopt have good sunlight heat reflecting properties through surface-treated hollow glass micropearl, there is good high temperature resistant, the anti-sun performance of burning.
3, drip irrigation zone of the present invention apply crosslinking process utilization polymer surface by covalent linkage grafting on coated material to form the surface modifying method of firm coating, carry out the ultraviolet radiation crosslinking reaction of coating, make fluoro-acrylate copolymer by crosslinking reaction and surface, drip irrigation zone and the intermolecular formation covalent linkage of coated material, to reach the effect of firm coating.
4, drip irrigation zone of the present invention melting range is probably at 200 ~ 240 ℃, and resistance to elevated temperatures comparative superiority has the performance (referring to table 1) of anti-sun calcination.Meanwhile, drip irrigation zone tensile strength 22MPa of the present invention; Under specified test pressure and water temperature condition, the rated flow that anti-sun calcination dropper drips band is defined as 0.8 ~ 3.0 L/h; Minimum working pressure power Pmin=50 MPa, maximum working pressure (MWP) Pmax=300 Mpa; Under 75 MPa pressure, keep 1h, anti-sun calcination dropper drips band and does not occur water spray, explosion, deformation.
The melting situation of two kinds of drip irrigation zone materials under table 1 differing temps
5, drip irrigation zone of the present invention, substantially without by calcination phenomenon, is all better than common drip irrigation zone work-ing life.The present invention and common drip irrigation zone are laid at same farmland, and when normal drip irrigation is used, the service condition of routine observation drip irrigation zone records as table 2:
Table 2 injection moulding centrifugal filter field service condition is followed the tracks of contrast
As can be seen from Table 2, along with the increase of duration of service, drip irrigation zone of the present invention there is no calcination phenomenon and occurs, has effectively guaranteed the normal use of drip irrigation system; And common dropper occurred while dropping in 3 months individually, by the aperture of calcination, within 5 months, having occurred the situation of leaking, there is many places drainage during by 6 months between at the trial, cause drip irrigation system normally not move.
6, technique of the present invention simple, be easy to realize.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Fig. 1 is middle spray equipment schematic diagram of the present invention.
Fig. 2 is medium ultraviolet light irradiation apparatus schematic diagram of the present invention.
In figure: the 1-dry outer dividing plate 5-spray equipment of drip irrigation zone pipe embryo 2-ultraviolet radiation device 3-ultraviolet lamp tube, 4-inner surface for reflecting ultraviolet lamp 6-tubing 7-dividing plate 8-atomizing nozzle.
Embodiment
embodiment 1high temperature resistant, an anti-calcination under-film drip irrigation band coating, this coating is made by the raw material of following mass percent (g/g): 92% fluoro-acrylate copolymer solution, 8% modification hollow glass micropearl and account for the benzophenone of fluoro-acrylate copolymer solution 2%.
Wherein:
Fluoro-acrylate copolymer solution refers to the vinylformic acid of 1 equivalent 18 fat mixed with vinylformic acid-2-hydroxyl ethyl ester of 2 equivalents, is polyreaction under the condition of 60 ℃ in temperature, obtains on side chain the acrylate copolymer intermediate A with great amount of hydroxy group; Then, intermediate A slowly drops in the hexamethylene diisocyanate solution of 3 equivalents, and stir on dropping limit, limit, after reaction, obtains on side chain the acrylate copolymer intermediate B with a large amount of isocyanate groups; Secondly, in intermediate B, add the fluorine alcohol of 3.6 equivalents, after reaction, obtain on side chain the acrylate copolymer intermediate C with a large amount of carbon fluorine chains; Finally, in intermediate C, add ethanol that the mass concentration of 0.2 equivalent is 80% to carry out the solution of end capping gained.Fluorine alcohol is that carbonatoms is less than or equal to 6 short carbon fluorine chain fluorine alcohol.
Modification hollow glass micropearl refers to the dehydrated alcohol of the silane resin acceptor kh-550 of 5g and 30mL is mixed with to solution, and be stirred to after solution clarification, this solution is slowly splashed in hollow glass micropearl, by strong stirring, make solution fully infiltrate hollow glass micropearl, then by the water-bath that infiltrates hollow glass micropearl completely and put into 80 ℃, react 1.5 hours, obtain reaction product, this reaction product is cooled to room temperature by filtering, washing and get final product.Hollow glass micropearl refers to that diameter is the D-1210 type hollow glass micropearl of 5 ~ 300 microns.
This is high temperature resistant, the preparation method of anti-calcination under-film drip irrigation band coating, comprises the following steps:
(1) by proportioning, weigh.
(2) prepare fluoro-acrylate copolymer coating emulsion: in fluoro-acrylate copolymer solution, add benzophenone, after mixing, obtain fluoro-acrylate copolymer coating emulsion.
(3) coating emulsion spraying: dry drip irrigation zone pipe embryo 1 is put into spray equipment 5, fluoro-acrylate copolymer coating emulsion is injected to the tubing 6 of spray equipment 5, and by the atomizing nozzle 8 in spray equipment 5, coating solution is sprayed on equably to the outside surface of dry drip irrigation zone pipe embryo 1, and to make coat-thickness be 0.02 ~ 0.04mm.
Wherein: spray equipment 5 comprise the housing I of hollow and with the tubing 6 of control valve, atomizing nozzle 8(referring to Fig. 1); In housing I, be provided with two cavitys being separated by dividing plate 7; The housing I at each the cavity place in two cavitys is provided with a tubing 6; Several atomizing nozzles 8 of cambered surface spaced set tangentially in each cavity in two cavitys, the atomizing nozzle 8 in this each cavity and tubing 6 be corresponding being connected one by one.
(4) the dry drip irrigation zone pipe embryo 1 that 1 ~ 5min completes after spraying enters ultraviolet radiation device 2, open the trip switch of ultraviolet radiation device, ultraviolet lamp tube 3 is started working, and after 1.5s ~ 2s, in fluoro-acrylate copolymer coating emulsion, adds modification hollow glass micropearl.
Wherein: the ultraviolet lamp tube 3(that ultraviolet radiation device 2 comprises the housing II of hollow and is connected with trip switch is referring to Fig. 2); Housing II is provided with the outer dividing plate 4 of inner surface for reflecting ultraviolet lamp, and in it, cambered surface is evenly arranged 6 ultraviolet lamp tubes 3 vertically.
embodiment 2high temperature resistant, an anti-calcination under-film drip irrigation band coating, this coating is made by the raw material of following mass percent (g/g): 94% fluoro-acrylate copolymer solution, 6% modification hollow glass micropearl and account for the benzophenone of fluoro-acrylate copolymer solution 4%.
Wherein:
Fluoro-acrylate copolymer solution refers to the vinylformic acid of 2 equivalents 18 fat mixed with vinylformic acid-2-hydroxyl ethyl ester of 4 equivalents, is polyreaction under the condition of 65 ℃ in temperature, obtains on side chain the acrylate copolymer intermediate A with great amount of hydroxy group; Then, intermediate A slowly drops in the hexamethylene diisocyanate solution of 4 equivalents, and stir on dropping limit, limit, after reaction, obtains on side chain the acrylate copolymer intermediate B with a large amount of isocyanate groups; Secondly, in intermediate B, add the fluorine alcohol of 4 equivalents, after reaction, obtain on side chain the acrylate copolymer intermediate C with a large amount of carbon fluorine chains; Finally, in intermediate C, add ethanol that the mass concentration of 0.4 equivalent is 85% to carry out the solution of end capping gained.Fluorine alcohol is that carbonatoms is less than or equal to 6 short carbon fluorine chain fluorine alcohol.
Modification hollow glass micropearl refers to the dehydrated alcohol of the silane resin acceptor kh-550 of 8g and 30mL is mixed with to solution, and be stirred to after solution clarification, this solution is slowly splashed in hollow glass micropearl, by strong stirring, make solution fully infiltrate hollow glass micropearl, then by the water-bath that infiltrates hollow glass micropearl completely and put into 85 ℃, react 1.5 hours, obtain reaction product, this reaction product is cooled to room temperature by filtering, washing and get final product.Hollow glass micropearl refers to that diameter is the D-1210 type hollow glass micropearl of 5 ~ 300 microns.
This is high temperature resistant, the preparation method of anti-calcination under-film drip irrigation band coating same
embodiment 1.
embodiment 3high temperature resistant, an anti-calcination under-film drip irrigation band coating, this coating is made by the raw material of following mass percent (g/g): 93% fluoro-acrylate copolymer solution, 7% modification hollow glass micropearl and account for the benzophenone of fluoro-acrylate copolymer solution 3%.
Wherein:
Fluoro-acrylate copolymer solution refers to the vinylformic acid of 1.5 equivalents 18 fat mixed with vinylformic acid-2-hydroxyl ethyl ester of 3 equivalents, is polyreaction under the condition of 62 ℃ in temperature, obtains on side chain the acrylate copolymer intermediate A with great amount of hydroxy group; Then, intermediate A slowly drops in the hexamethylene diisocyanate solution of 3.5 equivalents, and stir on dropping limit, limit, after reaction, obtains on side chain the acrylate copolymer intermediate B with a large amount of isocyanate groups; Secondly, in intermediate B, add the fluorine alcohol of 3.8 equivalents, after reaction, obtain on side chain the acrylate copolymer intermediate C with a large amount of carbon fluorine chains; Finally, in intermediate C, add ethanol that the mass concentration of 0.3 equivalent is 82% to carry out the solution of end capping gained.Fluorine alcohol is that carbonatoms is less than or equal to 6 short carbon fluorine chain fluorine alcohol.
Modification hollow glass micropearl refers to the dehydrated alcohol of the silane resin acceptor kh-550 of 7g and 30mL is mixed with to solution, and be stirred to after solution clarification, this solution is slowly splashed in hollow glass micropearl, by strong stirring, make solution fully infiltrate hollow glass micropearl, then by the water-bath that infiltrates hollow glass micropearl completely and put into 82 ℃, react 1.5 hours, obtain reaction product, this reaction product is cooled to room temperature by filtering, washing and get final product.Hollow glass micropearl refers to that diameter is the D-1210 type hollow glass micropearl of 5 ~ 300 microns.
This is high temperature resistant, the preparation method of anti-calcination under-film drip irrigation band coating same
embodiment 1.
Claims (6)
1. high temperature resistant, an anti-calcination under-film drip irrigation band coating, is characterized in that: this coating is made by the raw material of following mass percent: 92 ~ 94% fluoro-acrylate copolymer solution, 6 ~ 8% modification hollow glass micropearls and account for the benzophenone of described fluoro-acrylate copolymer solution 2 ~ 4%; Wherein
Described fluoro-acrylate copolymer solution refers to the vinylformic acid of 1 ~ 2 equivalent 18 fat is mixed with vinylformic acid-2-hydroxyl ethyl ester of 2 ~ 4 equivalents, in temperature, be polyreaction under the condition of 60 ~ 65 ℃, obtain on side chain the acrylate copolymer intermediate A with great amount of hydroxy group; Then, described intermediate A slowly drops in the hexamethylene diisocyanate solution of 3 ~ 4 equivalents, and stir on dropping limit, limit, after reaction, obtains on side chain the acrylate copolymer intermediate B with a large amount of isocyanate groups; Secondly, in described intermediate B, add the fluorine alcohol of 3.6 ~ 4 equivalents, after reaction, obtain on side chain the acrylate copolymer intermediate C with a large amount of carbon fluorine chains; Finally, in described intermediate C, add ethanol that the mass concentration of 0.2 ~ 0.4 equivalent is 80 ~ 85% to carry out the solution of end capping gained;
Described modification hollow glass micropearl refers to the dehydrated alcohol of the silane resin acceptor kh-550 of 5 ~ 8g and 30mL is mixed with to solution, and be stirred to after solution clarification, this solution is slowly splashed in hollow glass micropearl, by strong stirring, make solution fully infiltrate described hollow glass micropearl, then by the water-bath that infiltrates hollow glass micropearl completely and put into 80 ~ 85 ℃, react 1.5 hours, obtain reaction product, this reaction product is cooled to room temperature by filtering, washing and get final product.
2. a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as claimed in claim 1, is characterized in that: described fluorine alcohol is that carbonatoms is less than or equal to 6 short carbon fluorine chain fluorine alcohol.
3. a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as claimed in claim 1, is characterized in that: described hollow glass micropearl refers to that diameter is the D-1210 type hollow glass micropearl of 5 ~ 300 microns.
4. the preparation method of a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as claimed in claim 1, comprises the following steps:
(1) by proportioning, weigh;
(2) prepare fluoro-acrylate copolymer coating emulsion: in fluoro-acrylate copolymer solution, add benzophenone, after mixing, obtain fluoro-acrylate copolymer coating emulsion;
(3) coating emulsion spraying: dry drip irrigation zone pipe embryo (1) is put into spray equipment (5), described fluoro-acrylate copolymer coating emulsion is injected to the tubing (6) of described spray equipment (5), and by the atomizing nozzle (8) in described spray equipment (5), described coating solution is sprayed on equably to the outside surface of described dry drip irrigation zone pipe embryo (1), and to make coat-thickness be 0.02 ~ 0.04mm;
(4) the described dry drip irrigation zone pipe embryo (1) that 1 ~ 5min completes after spraying enters ultraviolet radiation device (2), open the trip switch of described ultraviolet radiation device (2), ultraviolet lamp tube (3) is started working, after 1.5s ~ 2s, in described fluoro-acrylate copolymer coating emulsion, add modification hollow glass micropearl.
5. the preparation method of a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as claimed in claim 4, is characterized in that: the spray equipment (5) of described step in (3) comprises the housing I of hollow and with tubing (6), the atomizing nozzle (8) of control valve; In described housing I, be provided with two cavitys being separated by dividing plate (7); The described housing I at each the cavity place in described two cavitys is provided with a described tubing (6); Several described atomizing nozzles of cambered surface spaced set (8) tangentially in each cavity in described two cavitys, the atomizing nozzle (8) in this each cavity and described tubing (6) be corresponding being connected one by one.
6. the preparation method of a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as claimed in claim 4, is characterized in that: the ultraviolet radiation device (2) of described step in (4) comprises the housing II of hollow and be connected with the ultraviolet lamp tube (3) of trip switch; Described housing II is provided with the outer dividing plate (4) of inner surface for reflecting ultraviolet lamp, and in it, cambered surface is evenly arranged 6 described ultraviolet lamp tubes (3) vertically.
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| CN201310663834.6A CN103740220B (en) | 2013-12-11 | 2013-12-11 | A kind of high temperature resistant, anti-calcination under-film drip irrigation band coating and preparation method thereof |
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| CN201310663834.6A CN103740220B (en) | 2013-12-11 | 2013-12-11 | A kind of high temperature resistant, anti-calcination under-film drip irrigation band coating and preparation method thereof |
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| CN103740220A true CN103740220A (en) | 2014-04-23 |
| CN103740220B CN103740220B (en) | 2015-11-18 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020731A (en) * | 2007-03-12 | 2007-08-22 | 安徽大学 | Process of preparing solvent type fluoric acrylate copolymer |
| CN101781763A (en) * | 2010-04-01 | 2010-07-21 | 中国兵器工业第五九研究所 | Preparation method of cast aluminum alloy film coat |
| CN102516859A (en) * | 2011-12-07 | 2012-06-27 | 东南大学 | Anti-doodling and anti-affixing paint and its preparation method |
| CN103059316A (en) * | 2012-12-31 | 2013-04-24 | 中科院广州化学有限公司 | Polyurethane/polyacrylate copolymer modified by organic fluoride and ultraviolet curing coating prepared by polyurethane/polyacrylate copolymer |
-
2013
- 2013-12-11 CN CN201310663834.6A patent/CN103740220B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101020731A (en) * | 2007-03-12 | 2007-08-22 | 安徽大学 | Process of preparing solvent type fluoric acrylate copolymer |
| CN101781763A (en) * | 2010-04-01 | 2010-07-21 | 中国兵器工业第五九研究所 | Preparation method of cast aluminum alloy film coat |
| CN102516859A (en) * | 2011-12-07 | 2012-06-27 | 东南大学 | Anti-doodling and anti-affixing paint and its preparation method |
| CN103059316A (en) * | 2012-12-31 | 2013-04-24 | 中科院广州化学有限公司 | Polyurethane/polyacrylate copolymer modified by organic fluoride and ultraviolet curing coating prepared by polyurethane/polyacrylate copolymer |
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