CN103740220B - A kind of high temperature resistant, anti-calcination under-film drip irrigation band coating and preparation method thereof - Google Patents
A kind of high temperature resistant, anti-calcination under-film drip irrigation band coating and preparation method thereof Download PDFInfo
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- CN103740220B CN103740220B CN201310663834.6A CN201310663834A CN103740220B CN 103740220 B CN103740220 B CN 103740220B CN 201310663834 A CN201310663834 A CN 201310663834A CN 103740220 B CN103740220 B CN 103740220B
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Abstract
The present invention relates to a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating, this coating is made up of the raw material of following mass percent: 92 ~ 94% fluoro-acrylate copolymer solution, 6 ~ 8% modification hollow glass micropearls and the benzophenone accounting for described fluoro-acrylate copolymer solution 2 ~ 4%.Meanwhile, the preparation method of this coating is also disclosed.The present invention has good high temperature resistant, the anti-sun and to burn performance.
Description
Technical field
The present invention relates to manufacture field, drip irrigation zone, particularly relate to a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating and preparation method thereof.
Background technology
Drip irrigation under film 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.Drip irrigation under film at home apply close to 10 years, application area is also expanding year by year, in use there is various problem, wherein under normal film, easily burn in drip irrigation zone is distinct issues the most, because under-film drip irrigation band is under solar light irradiation, condense under film the globule, " convex lens effect " that the globule is formed causes burn to drip irrigation zone, this phenomenon shows as surface, drip irrigation zone and occurs burning fusion hole, cause Ci water, thus have 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, has deep research from dystectic metal high temperature material to ceramic high-temperature resistant material and nonmetal high temperature material.But current domestic existing coating quality is not high, ability that under-film drip irrigation band is high temperature resistant, the anti-sun is burnt, be only the surface being bonded in coated product by physical adsorption, poor durability, drastically influence the quality of under-film drip irrigation system.
Summary of the invention
Technical problem to be solved by this invention is to provide good high temperature resistant, the anti-calcination under-film drip irrigation band coating of a kind of wearing quality.
Another technical problem to be solved by this invention is to provide the preparation method of this drip irrigation zone coating.
For solving the problem, one of the present invention is high temperature resistant, anti-calcination under-film drip irrigation band coating, it is characterized in that: this coating is made up of the raw material of following mass percent: 92 ~ 94% fluoro-acrylate copolymer solution, 6 ~ 8% modification hollow glass micropearls and the benzophenone accounting for described fluoro-acrylate copolymer solution 2 ~ 4%; Wherein
Described fluoro-acrylate copolymer solution refers to and is mixed with the vinylformic acid-2-hydroxyl ethyl ester of 2 ~ 4 equivalents by the octadecyl acrylate of 1 ~ 2 equivalent, be polyreaction under the condition of 60 ~ 65 DEG C in temperature, obtain the acrylate copolymer intermediate A with great amount of hydroxy group on side chain; Then, described intermediate A slowly drops in the hexamethylene diisocyanate solution of 3 ~ 4 equivalents, and dropping limit, limit is stirred, and after reaction, obtains the acrylate copolymer intermediate B with a large amount of isocyanate groups on side chain; Secondly, add the fluorine alcohol of 3.6 ~ 4 equivalents in described intermediate B, after reaction, namely obtain the acrylate copolymer intermediate C with a large amount of carbon fluorine chain on side chain; Finally, the mass concentration adding 0.2 ~ 0.4 equivalent in described intermediate C be 80 ~ 85% ethanol carry out the solution of end capping gained;
Described modification hollow glass micropearl refers to and the silane resin acceptor kh-550 of 5 ~ 8g and the dehydrated alcohol of 30mL is mixed with solution, and after being stirred to solution clarification, this solution is slowly instilled in hollow glass micropearl, solution is made fully to infiltrate described hollow glass micropearl by strong stirring, then hollow glass micropearl completely will be infiltrated put into the water-bath of 80 ~ 85 DEG C, react 1.5 hours, obtain reaction product, through filtering, washing and get final product after this reaction product is cooled to room temperature.
Described fluorine alcohol is the short carbon fluorine chain fluorine alcohol that carbonatoms is less than or equal to 6.
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:
Step one is weighed by proportioning;
Step 2 prepares fluoro-acrylate copolymer coating emulsion: in fluoro-acrylate copolymer solution, add benzophenone, namely obtains fluoro-acrylate copolymer coating emulsion after mixing;
Step 3 coating emulsion sprays: the drip irrigation zone pipe embryo of drying is put into spray equipment, described fluoro-acrylate copolymer coating emulsion is injected the tubing of described spray equipment, and by the atomizing nozzle in described spray equipment, described coating emulsion is sprayed on equably the outside surface of the drip irrigation zone pipe embryo of described drying, and coat-thickness is made to be 0.02 ~ 0.04mm;
The drip irrigation zone pipe embryo of the described drying after step 41 ~ 5min completes spraying enters ultraviolet radiation device, open the trip switch of described ultraviolet radiation device, ultraviolet lamp tube is started working, after 1.5s ~ 2s, in described fluoro-acrylate copolymer coating emulsion, add modification hollow glass micropearl.
Spray equipment in described step 3 comprises the housing I of hollow and tubing, the atomizing nozzle of band control valve; Be provided with by two of baffle for separating cavitys in described housing I; The described housing I at each cavity place in described two cavitys is provided with a described tubing; The tangentially several described atomizing nozzle of cambered surface spaced set in each cavity in described two cavitys, the atomizing nozzle in this each cavity is connected with described tubing one_to_one corresponding.
Ultraviolet radiation device in described step 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 selected the fluorocarbon containing short fluorocarbon chain (Rf≤6) of environmental protection, can by natural degradation, toxic Perfluorocaprylic Acid and perfluoro octyl sulfonic acid can not be decomposited, cause environmental pollution, biological accumulation and harm.
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 and to burn performance.
3, coating crosslinking process in drip irrigation zone of the present invention to utilize at polymer surface by coated material in covalent linkage grafting 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 firmly coating.
4, drip irrigation zone of the present invention melting range is probably at 200 ~ 240 DEG C, resistance to elevated temperatures comparative superiority, has the performance (see table 1) of anti-sun calcination.Meanwhile, drip irrigation zone tensile strength 22MPa of the present invention; Under rating test pressure and water temperature condition, the rated flow that anti-sun calcination dropper drips band is defined as 0.8 ~ 3.0L/h; Minimum operating pressures that Pmin=50MPa, maximum working pressure (MWP) Pmax=300Mpa; Keep 1h under 75MPa pressure, anti-sun calcination dropper drips band and does not occur water spray, explosion, deformation.
The melting situation of two kinds of drip irrigation zone material under table 1 differing temps
5, drip irrigation zone of the present invention is substantially without by calcination phenomenon, and work-ing life is all better than ordinary drip irrigation tape.The present invention and ordinary drip irrigation tape are laid at same farmland, when normal drip irrigation uses, the service condition record of routine observation drip irrigation zone is as table 2:
Table 2 injection moulding centrifugal filter field service condition follows 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, effectively ensure that the normal use of drip irrigation system; And individually by the aperture of calcination, within 5 months, having occurred the situation of leaking, to having occurred many places drainage when 6 months at the trial, having caused drip irrigation system normally not run to appear when dropping in 3 months in common dropper.
6, present invention process 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 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 of 1-drying.
Embodiment
embodiment 1a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating, this coating is made up of 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 and is mixed with the vinylformic acid-2-hydroxyl ethyl ester of 2 equivalents by the octadecyl acrylate of 1 equivalent, is polyreaction under the condition of 60 DEG C, obtains the acrylate copolymer intermediate A with great amount of hydroxy group on side chain in temperature; Then, intermediate A slowly drops in the hexamethylene diisocyanate solution of 3 equivalents, and dropping limit, limit is stirred, and after reaction, obtains the acrylate copolymer intermediate B with a large amount of isocyanate groups on side chain; Secondly, add the fluorine alcohol of 3.6 equivalents in intermediate B, after reaction, namely obtain the acrylate copolymer intermediate C with a large amount of carbon fluorine chain on side chain; Finally, the mass concentration adding 0.2 equivalent in intermediate C be 80% ethanol carry out the solution of end capping gained.Fluorine alcohol is the short carbon fluorine chain fluorine alcohol that carbonatoms is less than or equal to 6.
Modification hollow glass micropearl refers to and the silane resin acceptor kh-550 of 5g and the dehydrated alcohol of 30mL is mixed with solution, and after being stirred to solution clarification, this solution is slowly instilled in hollow glass micropearl, solution is made fully to infiltrate hollow glass micropearl by strong stirring, then hollow glass micropearl completely will be infiltrated put into the water-bath of 80 DEG C, react 1.5 hours, obtain reaction product, through filtering, washing and get final product after this reaction product is cooled to room temperature.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:
Step one is weighed by proportioning.
Step 2 prepares fluoro-acrylate copolymer coating emulsion: in fluoro-acrylate copolymer solution, add benzophenone, namely obtains fluoro-acrylate copolymer coating emulsion after mixing.
Step 3 coating emulsion sprays: the drip irrigation zone pipe embryo 1 of drying is put into spray equipment 5, fluoro-acrylate copolymer coating emulsion is injected the tubing 6 of spray equipment 5, and by the atomizing nozzle 8 in spray equipment 5, coating emulsion is sprayed on equably the outside surface of dry drip irrigation zone pipe embryo 1, and coat-thickness is made to be 0.02 ~ 0.04mm.
Wherein: spray equipment 5 comprises the housing I of hollow and the band tubing 6 of control valve, atomizing nozzle 8(see Fig. 1); Two cavitys separated by dividing plate 7 are provided with in housing I; The housing I at each cavity place in two cavitys is provided with a tubing 6; The tangentially several atomizing nozzle 8 of cambered surface spaced set in each cavity in two cavitys, the atomizing nozzle 8 in this each cavity is connected with tubing 6 one_to_one corresponding.
The drip irrigation zone pipe embryo 1 of the drying after step 41 ~ 5min completes 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 housing II that ultraviolet radiation device 2 comprises hollow and be connected with trip switch ultraviolet lamp tube 3(see 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 2a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating, this coating is made up of 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 and is mixed with the vinylformic acid-2-hydroxyl ethyl ester of 4 equivalents by the octadecyl acrylate of 2 equivalents, is polyreaction under the condition of 65 DEG C, obtains the acrylate copolymer intermediate A with great amount of hydroxy group on side chain in temperature; Then, intermediate A slowly drops in the hexamethylene diisocyanate solution of 4 equivalents, and dropping limit, limit is stirred, and after reaction, obtains the acrylate copolymer intermediate B with a large amount of isocyanate groups on side chain; Secondly, add the fluorine alcohol of 4 equivalents in intermediate B, after reaction, namely obtain the acrylate copolymer intermediate C with a large amount of carbon fluorine chain on side chain; Finally, the mass concentration adding 0.4 equivalent in intermediate C be 85% ethanol carry out the solution of end capping gained.Fluorine alcohol is the short carbon fluorine chain fluorine alcohol that carbonatoms is less than or equal to 6.
Modification hollow glass micropearl refers to and the silane resin acceptor kh-550 of 8g and the dehydrated alcohol of 30mL is mixed with solution, and after being stirred to solution clarification, this solution is slowly instilled in hollow glass micropearl, solution is made fully to infiltrate hollow glass micropearl by strong stirring, then hollow glass micropearl completely will be infiltrated put into the water-bath of 85 DEG C, react 1.5 hours, obtain reaction product, through filtering, washing and get final product after this reaction product is cooled to room temperature.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 3a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating, this coating is made up of 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 and is mixed with the vinylformic acid-2-hydroxyl ethyl ester of 3 equivalents by the octadecyl acrylate of 1.5 equivalents, is polyreaction under the condition of 62 DEG C, obtains the acrylate copolymer intermediate A with great amount of hydroxy group on side chain in temperature; Then, intermediate A slowly drops in the hexamethylene diisocyanate solution of 3.5 equivalents, and dropping limit, limit is stirred, and after reaction, obtains the acrylate copolymer intermediate B with a large amount of isocyanate groups on side chain; Secondly, add the fluorine alcohol of 3.8 equivalents in intermediate B, after reaction, namely obtain the acrylate copolymer intermediate C with a large amount of carbon fluorine chain on side chain; Finally, the mass concentration adding 0.3 equivalent in intermediate C be 82% ethanol carry out the solution of end capping gained.Fluorine alcohol is the short carbon fluorine chain fluorine alcohol that carbonatoms is less than or equal to 6.
Modification hollow glass micropearl refers to and the silane resin acceptor kh-550 of 7g and the dehydrated alcohol of 30mL is mixed with solution, and after being stirred to solution clarification, this solution is slowly instilled in hollow glass micropearl, solution is made fully to infiltrate hollow glass micropearl by strong stirring, then hollow glass micropearl completely will be infiltrated put into the water-bath of 82 DEG C, react 1.5 hours, obtain reaction product, through filtering, washing and get final product after this reaction product is cooled to room temperature.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 (5)
1. high temperature resistant, an anti-calcination under-film drip irrigation band coating, is characterized in that: this coating is made up of the raw material of following mass percent: 92 ~ 94% fluoro-acrylate copolymer solution, 6 ~ 8% modification hollow glass micropearls and the benzophenone accounting for described fluoro-acrylate copolymer solution 2 ~ 4%; Wherein
Described fluoro-acrylate copolymer solution refers to and is mixed with the vinylformic acid-2-hydroxyl ethyl ester of 2 ~ 4 equivalents by the octadecyl acrylate of 1 ~ 2 equivalent, be polyreaction under the condition of 60 ~ 65 DEG C in temperature, obtain the acrylate copolymer intermediate A with great amount of hydroxy group on side chain; Then, described intermediate A slowly drops in the hexamethylene diisocyanate solution of 3 ~ 4 equivalents, and dropping limit, limit is stirred, and after reaction, obtains the acrylate copolymer intermediate B with a large amount of isocyanate groups on side chain; Secondly, add the fluorine alcohol of 3.6 ~ 4 equivalents in described intermediate B, after reaction, namely obtain the acrylate copolymer intermediate C with a large amount of carbon fluorine chain on side chain; Finally, the mass concentration adding 0.2 ~ 0.4 equivalent in described intermediate C be 80 ~ 85% ethanol carry out the solution of end capping gained; Described fluorine alcohol is the short carbon fluorine chain fluorine alcohol that carbonatoms is less than or equal to 6;
Described modification hollow glass micropearl refers to and the silane resin acceptor kh-550 of 5 ~ 8g and the dehydrated alcohol of 30mL is mixed with solution, and after being stirred to solution clarification, this solution is slowly instilled in hollow glass micropearl, solution is made fully to infiltrate described hollow glass micropearl by strong stirring, then hollow glass micropearl completely will be infiltrated put into the water-bath of 80 ~ 85 DEG C, react 1.5 hours, obtain reaction product, through filtering, washing and get final product after this reaction product is cooled to room temperature.
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 hollow glass micropearl refers to that diameter is the D-1210 type hollow glass micropearl of 5 ~ 300 microns.
3. 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:
Step one is weighed by proportioning;
Step 2 prepares fluoro-acrylate copolymer coating emulsion: in fluoro-acrylate copolymer solution, add benzophenone, namely obtains fluoro-acrylate copolymer coating emulsion after mixing;
Step 3 coating emulsion sprays: spray equipment (5) is put in drip irrigation zone pipe embryo (1) of drying, described fluoro-acrylate copolymer coating emulsion is injected the tubing (6) of described spray equipment (5), and by the atomizing nozzle (8) in described spray equipment (5), described coating emulsion is sprayed on equably the outside surface of drip irrigation zone pipe embryo (1) of described drying, and coat-thickness is made to be 0.02 ~ 0.04mm;
Drip irrigation zone pipe embryo (1) of the described drying after step 41 ~ 5min completes 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.
4. the preparation method of a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as claimed in claim 3, is characterized in that: the spray equipment (5) in described step 3 comprises the housing I of hollow and tubing (6), the atomizing nozzle (8) of band control valve; Two cavitys separated by dividing plate (7) are provided with in described housing I; The described housing I at each cavity place in described two cavitys is provided with a described tubing (6); The tangentially several described atomizing nozzle (8) of cambered surface spaced set in each cavity in described two cavitys, the atomizing nozzle (8) in this each cavity is connected with described tubing (6) one_to_one corresponding.
5. the preparation method of a kind of high temperature resistant, anti-calcination under-film drip irrigation band coating as claimed in claim 3, is characterized in that: the ultraviolet radiation device (2) in described step 4 comprises the housing II of hollow and is 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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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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2013
- 2013-12-11 CN CN201310663834.6A patent/CN103740220B/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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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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