CN111393968A - High-surface-tension, small-gap, high-smoothness and low-friction antifouling paint - Google Patents
High-surface-tension, small-gap, high-smoothness and low-friction antifouling paint Download PDFInfo
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- CN111393968A CN111393968A CN201911324093.2A CN201911324093A CN111393968A CN 111393968 A CN111393968 A CN 111393968A CN 201911324093 A CN201911324093 A CN 201911324093A CN 111393968 A CN111393968 A CN 111393968A
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- 230000003373 anti-fouling effect Effects 0.000 title claims abstract description 44
- 239000003973 paint Substances 0.000 title claims abstract description 27
- 229920005989 resin Polymers 0.000 claims abstract description 45
- 239000011347 resin Substances 0.000 claims abstract description 45
- 229920013822 aminosilicone Polymers 0.000 claims abstract description 13
- KIQKWYUGPPFMBV-UHFFFAOYSA-N diisocyanatomethane Chemical compound O=C=NCN=C=O KIQKWYUGPPFMBV-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 9
- 150000004985 diamines Chemical class 0.000 claims abstract description 9
- 239000000049 pigment Substances 0.000 claims abstract description 9
- 229920000570 polyether Polymers 0.000 claims abstract description 9
- -1 polyoxypropylene Polymers 0.000 claims abstract description 9
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 9
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 claims abstract description 9
- 239000011230 binding agent Substances 0.000 claims abstract description 8
- 239000000945 filler Substances 0.000 claims abstract description 8
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical group C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 claims description 2
- 239000011800 void material Substances 0.000 claims 2
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 claims 1
- 238000005299 abrasion Methods 0.000 abstract description 8
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 230000007797 corrosion Effects 0.000 abstract description 5
- 238000005260 corrosion Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 238000000576 coating method Methods 0.000 description 28
- 239000011248 coating agent Substances 0.000 description 22
- 239000000463 material Substances 0.000 description 21
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 description 12
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 230000003746 surface roughness Effects 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000001965 increasing effect Effects 0.000 description 4
- 239000010410 layer Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000011229 interlayer Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000010071 organism adhesion Effects 0.000 description 2
- 238000002203 pretreatment Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000008023 solidification Effects 0.000 description 2
- 238000007711 solidification Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 150000003606 tin compounds Chemical class 0.000 description 2
- 229920002396 Polyurea Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000002156 adsorbate Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 229940088597 hormone Drugs 0.000 description 1
- 239000005556 hormone Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000004447 silicone coating Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011345 viscous material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/02—Polyureas
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/482—Mixtures of polyethers containing at least one polyether containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/50—Polyethers having heteroatoms other than oxygen
- C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1656—Antifouling paints; Underwater paints characterised by the film-forming substance
- C09D5/1662—Synthetic film-forming substance
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/16—Antifouling paints; Underwater paints
- C09D5/1687—Use of special additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Paints Or Removers (AREA)
Abstract
The invention discloses a high-smoothness low-friction antifouling paint with large surface tension and small gaps, which comprises a prepolymer solution and a resin solution, wherein the prepolymer solution and the resin solution are mixed according to the proportion of 1: 1 and then are used; the prepolymer solution is prepared by 100 wt% of methylene diisocyanate, and the methylene diisocyanate contains 11 wt% to 15 wt% of NCO; the resin solution comprises 46 to 51 weight percent of polyoxypropylene diamine, 8 to 10 weight percent of polyether triamine with the molecular weight of 5000, 16 to 19 weight percent of polydiphenylamine, 9 to 20 weight percent of modified amino silicone resin, 3 to 10 weight percent of modified fluororesin, 6 to 9 weight percent of modified resin filler, 1 to 2 weight percent of binder and 0.5 to 2 weight percent of pigment. The invention has excellent elongation, elasticity, abrasion resistance, antifouling property, durability, adhesive force, large surface tension, small gap, high smoothness and low friction, can avoid the adhesion of marine organisms and the corrosion of a ship body when the ship runs or is parked for a long time, and is not easy to cause environmental pollution.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a high-smoothness low-friction antifouling coating with large surface tension and small gaps.
Background
Various marine organisms are attached to the part of the ship immersed in seawater below the waterline, and resistance generated by the marine organisms not only increases the fuel consumption of the ship, but also causes the reduction of the navigation speed of the ship. At present, the most widely used antifouling paint containing tin compounds is low in price, easy in raw material acquisition and excellent in antifouling performance, so that ships have a small amount of marine organisms attached. However, the existing tin compound antifouling paint can cause pollution to the marine environment, and remains in the sea for a long time, which is one of the currently recognized main factors of marine pollution. The newly developed self-abrasion antifouling paint which exerts antifouling performance by utilizing the principle that the antifouling paint is gradually abraded when a ship sails can avoid releasing environmental hormones and prevent marine organisms from attaching to the ship when the ship sails to the maximum extent; however, this coating is very weak in coating film strength, requires frequent maintenance and coating, and still fails to solve the problem of adhesion of a large amount of marine organisms when the ship is parked for a long time.
In the self-abrasion type antifouling paints described above, for example, korean patent laid-open publication No. 99-61474 (published 1999 on 26.7.10), korean patent registration No. 254651 (registered 2000 on 3.2.2000), etc., the antifouling paint reacts with seawater to allow the antifouling component to enter the ocean, which causes a problem of frequent maintenance of the paint, and in the case of long-term parking, the antifouling component does not actively burst out and a large amount of marine organisms are attached.
In addition, foreign matter may be attached to the inner side surfaces of various pipes for transporting fluid, such as a concrete farm or a seawater extraction pipe, an upper water pipe, and a sewer, which may cause unsmooth fluid flow and corrosion of the inner side of the pipe due to the foreign matter, thereby greatly reducing the service life and cost.
Disclosure of Invention
The present invention provides a high-smoothness low-friction antifouling paint with high surface tension and small gaps, which has excellent elongation, elasticity, abrasion resistance, antifouling property, durability, adhesive force, high surface tension, small gaps, high smoothness and low friction, can avoid the adhesion of marine organisms and the corrosion of ship hulls when ships run or are parked for a long time, and is not easy to cause environmental pollution.
In order to solve the technical problems, the invention adopts the following technical scheme: a high-smoothness low-friction antifouling paint with large surface tension and small gaps is characterized by comprising a prepolymer solution and a resin solution, wherein the prepolymer solution and the resin solution are mixed according to the ratio of 1: 1 and then are used; the prepolymer solution is prepared by 100 wt% of methylene diisocyanate, and the methylene diisocyanate contains 11 wt% to 15 wt% of NCO; the resin solution comprises 46 to 51 weight percent of polyoxypropylene diamine, 8 to 10 weight percent of polyether triamine with the molecular weight of 5000, 16 to 19 weight percent of polydiphenylamine, 9 to 20 weight percent of modified amino silicone resin, 6 to 10 weight percent of modified fluororesin, 6 to 9 weight percent of modified resin filler, 1 to 2 weight percent of binder and 0.5 to 2 weight percent of pigment.
The prepolymer solution is 100 wt% of methylene diisocyanate, and determines the physical properties of the whole hardness, weather resistance, elongation and the like of the high-surface-tension high-gap high-smoothness low-friction antifouling paint; among them, the higher the NCO content is, the higher the hardness of the cured coating film is, and the lower the NCO content is, the lower the hardness of the cured coating film is, and therefore, it is preferable that the NCO content of the methylene diisocyanate in the present invention is 11 to 15% by weight.
The polyoxypropylene diamine in the resin solution is used to adjust the elongation and tensile strength of the coating film, and when the amount of the polyoxypropylene diamine is less than 46 wt%, the elongation of the coating film is low, and when the amount of the polyoxypropylene diamine is more than 51 wt%, the elongation and tensile strength of the coating film are increased, but the abrasion resistance is reduced, so that the polyoxypropylene diamine is preferably added in the range of 46 wt% to 51 wt%.
The polyether triamine with the molecular weight of 5000 in the resin solution is used for adjusting the curing time, when the adding amount of the polyether triamine with the molecular weight of 5000 is less than 8 wt%, the curing time is prolonged, and when the adding amount of the polyether triamine with the molecular weight of 5000 is more than 10 wt%, the appearance is reduced and the adhesive force is reduced due to the too fast curing time, therefore, the polyether triamine with the molecular weight of 5000 is preferably added in the range of 8 wt% -10 wt%.
The poly diphenylamine in the resin solution is used for adjusting curing physical properties and improving elongation, the poly diphenylamine is added in an amount of less than 16 wt%, when the poly diphenylamine is used for adjusting curing time and increasing elongation, viscous substances remain on the surface of a coating film, and residues still exist after curing, so that the surface is polluted, foreign matters are easy to adhere, and the wear resistance is reduced, and when the poly diphenylamine is added in an amount of more than 19 wt%, when the poly diphenylamine is used for adjusting curing time and increasing elongation, although the curing time is accelerated, the durability after curing is reduced, and the phenomenon of fracture or breakage is easy to occur, so the poly diphenylamine is preferably added in an amount of 16 wt% to 19 wt%.
The modified amino silicone resin and the modified fluororesin in the resin solution are used for improving sliding property and antifouling property; when the addition amount of the modified amino silicone resin is less than 9 wt%, the sliding property and the antifouling property are reduced, and the marine organism adhesion phenomenon cannot be prevented, and when the addition amount of the modified amino silicone resin is more than 20 wt%, the sliding property and the antifouling property are enhanced, the interlayer adhesive force is reduced, and the elongation is reduced, so that the modified amino silicone resin is preferably added in the range of 8 wt% to 20 wt%; when the amount of the modified fluororesin is less than 6 wt%, the slidability and the antifouling property are lowered, and the foreign matter adhesion phenomenon cannot be prevented, and when the amount of the modified fluororesin is more than 10 wt%, the interlayer adhesion is lowered, and the elongation is reduced, so that it is preferable that the modified fluororesin of the present invention is added in the range of 6 wt% to 10 wt%.
The modified resin filler in the resin solution is used for improving the abrasion resistance, and preferably, the modified filler is nano silicate and is added in a range of 6 to 9 wt%.
The binder in the resin solution allows smooth and sufficient mixing of the components and improves adhesion to a substrate, and is preferably one selected from β - (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, gamma-propyltrimethoxysilane, and gamma-methacryloxypropyltrimethoxysilane, and when the amount of the binder is less than 1 wt%, the adhesion is reduced, and when the amount of the binder is more than 2 wt%, the adhesion is increased but the abrasion resistance is reduced, and thus, it is preferable that the binder is added in the range of 1 wt% to 2 wt%.
The pigment in the resin solution is used for presenting a raw material color tone; when the amount of the pigment added is less than 0.5 wt%, the color is light and the hue cannot be completely expressed, and when the amount of the pigment added is more than 2 wt%, the surface drying time is lengthened, and therefore, it is preferable that the pigment of the present invention is added in the range of 0.5 wt% to 2 wt%.
The antifouling paint with large surface tension, small gap, high smoothness and low friction forms an antifouling layer on a base material by the following steps:
s1, a base material pre-treatment step, namely, pre-treating the base materials such as the area below the waterline of the ship hull or the inner surfaces of a steel pipe and a concrete water tank for fluid and gas transmission pipelines and water channels by using a power tool, removing foreign matters on the surface of the base materials, coating a primer, and enhancing the adhesive force between the base materials and the high-smoothness low-friction antifouling paint with large surface tension and small gaps;
s2, spraying a prepolymer solution and a resin solution on the surface of the base material which is obtained by previous treatment by using a two-liquid mixed type high-pressure spraying device at a ratio of 1: 1 under the conditions that the pressure is more than 2000psi and the temperature of the hose is 70-80 ℃, wherein the prepolymer solution and the resin solution cause chemical reaction while being sprayed and mixed, and the solidification is realized after 1-2 minutes, so that an antifouling layer which can effectively block rust caused by external factors is formed on the surface of the base material.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention mixes the silicon resin and the fluororesin for use, thereby improving the compatibility with other coatings, minimizing the surface tension of various components in the coatings, improving the diffusivity of the coatings, realizing the close coating of the coatings on the base materials, and improving the adhesive force.
2. The invention can avoid the phenomenon of marine organism adhesion when the ship runs or is parked for a long time.
3. The invention uses polyurea with excellent elongation and tensile strength to make the coating have excellent elongation, elasticity, abrasion resistance, antifouling property, durability, binding force, large surface tension, small gap, high smoothness and low friction, thereby avoiding damage caused by elastic adsorbate and damping device when a ship is in shore, preventing ship corrosion and being difficult to cause environmental pollution.
4. The invention is also suitable for the inner side surfaces of the pipes such as steel pipes used for fluid and gas conveying pipelines and water channels, and prevents foreign matters from adhering, thereby ensuring that the fluid and the gas are conveyed more smoothly and prolonging the service life of the pipes.
Detailed Description
In order to illustrate the invention more clearly, the following description will be given in conjunction with various embodiments.
Table 1 shows the content ratios of the components of examples 1 to 5 of the high-surface-tension, small-gap, high-smoothness and low-friction type antifouling paints according to the invention
Wherein, the resin solution components in examples 1 to 3 are 47 wt% of polyoxypropylene diamine, 9 wt% of polyether triamine with a molecular weight of 5000, 16 wt% of modified amino silicone resin, 7 wt% of modified fluororesin, 17 wt% of polydiphenylamine, 2 wt% of pigment, 8 wt% of modified filler and 1 wt% of tackifier, and the NCO content of methylene diisocyanate in the prepolymer solution is 11.8 wt%, 13 wt% and 15 wt%, respectively.
Wherein, the modified resin filler, the pigment and the tackifier in the resin solution components in examples 4 to 5 are respectively fixed at 7 wt%, 2 wt% and 1 wt%, the polyoxypropylene diamine in the resin solution is respectively 51 wt% and 46 wt%, the polyether triamine with the molecular weight of 5000 in the resin solution is respectively 10 wt% and 8 wt%, the modified amino silicone resin in the resin solution is respectively 10 wt% and 18 wt%, the modified fluororesin in the resin solution is respectively 6 wt% and 9 wt%, and the polydiphenyl triamine in the resin solution is respectively 19 wt% and 16 wt%; the NCO contents of the methylene diisocyanate in the prepolymer solutions of examples 4 to 5 were 11% by weight and 15% by weight, respectively.
Of these, comparative examples 1 and 2 are an inlet silicone coating and a conventional antifouling coating (SPC coating), respectively.
Table 1 component content ratios of examples 1 to 5
The antifouling paint having a large surface tension, a small gap, a high smoothness and a low friction according to the present invention was prepared by coating a steel material having a width of 20 × 30cm in the vertical and horizontal directions and a thickness of 3mm and the same as that of a ship hull in a thickness of 500 to 800 μm in examples 1 to 5 as described above, and adhesion was measured by an easy high adhesion test, and impact resistance was measured by a dupont impact tester, and the measurement results are shown in table 2.
Further, the antifouling paint of the present invention was prepared by coating a steel material having a width of 20 × 30cm in the vertical and horizontal directions and a thickness of 3mm and being the same as that of a ship hull in a thickness of 500 to 800 μm according to examples 1 to 5 described above, and a sample piece was immersed in the paint at a depth of 6 to 8m along the sea to examine whether fouling resistance of marine organisms and foreign matters adhered thereto was observed by immersion for 12 months, and the results of the examination are shown in Table 2.
Further, the anti-fouling paint having a large surface tension, a small gap, a high smoothness and a low friction according to the present invention was prepared by coating a steel material having a width of 20 × 30cm in the vertical and horizontal directions and a thickness of 3mm and the same as that of a ship hull with a thickness of 500 μm to 800 μm as in examples 1 to 5 described above, and was put into a reflow water bath tester to test the friction resistance, and the test results are shown in table 2.
The antifouling paint having a large surface tension, a small gap, a high smoothness and a low friction according to the present invention, which was produced as described in examples 1 to 5 above, was applied to a steel material having a width of 20 × 30cm in the vertical and horizontal directions and a thickness of 3mm and being the same as that of a ship hull in a thickness of 500 to 800 μm, and the surface roughness of the ship hull was measured using a hull surface roughness measuring instrument, and the measurement results are shown in table 2.
The antifouling paint with large surface tension, small gap, high smoothness and low friction in the embodiments 1 to 5 has the following steps of forming an antifouling layer on a base material:
s1, a base material pre-treatment step, namely, pre-treating the base materials such as the area below the waterline of the ship hull or the inner surfaces of a steel pipe and a concrete water tank for fluid and gas transmission pipelines and water channels by using a power tool, removing foreign matters on the surface of the base materials, coating a primer, and enhancing the adhesive force between the base materials and the high-smoothness low-friction antifouling paint with large surface tension and small gaps;
s2, spraying a prepolymer solution and a resin solution on the surface of the base material which is subjected to the previous treatment by using a two-liquid mixing type high-pressure spraying device at a ratio of 1: 1 under the conditions that the pressure is more than 2000psi and the temperature of the hose is 70-80 ℃, wherein the prepolymer solution and the resin solution cause a chemical reaction while being sprayed and mixed, and the solidification is realized after 1-2 minutes, so that an antifouling layer which effectively blocks the corrosion caused by the external factors is formed on the surface of the base material.
TABLE 2 tables showing the results of measurement of adhesion, impact resistance, stain resistance, friction resistance and surface roughness of examples 1 to 5 and comparative examples 1 and 2
Examples 1 to 5 have superior physical properties such as adhesion, impact resistance, stain resistance, friction resistance, and surface roughness, compared with comparative examples 1 and 2; as shown in examples 1 to 3, when the NCO content of the methylene diisocyanate in the prepolymer solution is in the range of 11.8 to 15% by weight of NCO, there is no great difference in the physical properties of examples 1 to 3;
the more the modified aminosilicone resin is added in examples 4 to 5, the more excellent the impact resistance, antifouling property, wire harness friction resistance and hull surface roughness, but the smaller the adhesiveness is, the lower the degree of decrease is;
in examples 1 to 5, the adhesion property enhances the wettability and diffusibility of the coating material, and the modified aminosilicone resin solution and the tackifier are used to make the coating material show excellent adhesion;
in terms of impact resistance, the coatings described in examples 1 to 5 have excellent impact resistance due to excellent elasticity and elongation, and in examples 1 to 5, marine organisms hardly adhere to the substrate coated with the high surface tension, small voids, high smoothness and low friction type antifouling coating of the present invention due to the addition of the modified aminosilicone resin and the modified fluororesin, and the adhered marine organisms are also very easily removed.
In the case of the friction resistance, the lower the hull surface roughness value, the less resistance the ship is subjected to during operation, and in the case of the surface roughness, when the modified aminosilicone solution is contained at 16% and the modified fluororesin solution is contained at 7%, the more excellent result of the slipperiness is obtained.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (4)
1. The utility model provides a surface tension is big, little high smooth low friction type antifouling paint in space which characterized in that: the resin solution is mixed with the prepolymer solution in a ratio of 1: 1 and then used.
2. The high surface tension, low void, high gloss, low friction antifouling paint of claim 1, wherein: the prepolymer solution is prepared by 100 wt% of methylene diisocyanate, and the methylene diisocyanate contains 11 wt% to 15 wt% of NCO; the resin solution comprises 46 to 51 weight percent of polyoxypropylene diamine, 8 to 10 weight percent of polyether triamine with the molecular weight of 5000, 16 to 19 weight percent of polydiphenylamine, 9 to 20 weight percent of modified amino silicone resin, 6 to 10 weight percent of modified fluororesin, 6 to 9 weight percent of modified resin filler, 1 to 2 weight percent of binder and 0.5 to 2 weight percent of pigment.
3. The high surface tension, low void, high smoothness, low friction antifouling paint of claim 2, wherein: the modified resin filler is nano silicate.
4. The antifouling paint as claimed in claim 2, wherein the binder is β - (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, γ -propyltrimethoxysilane, or γ -methacryloxypropyltrimethoxysilane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324093.2A CN111393968A (en) | 2019-12-19 | 2019-12-19 | High-surface-tension, small-gap, high-smoothness and low-friction antifouling paint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911324093.2A CN111393968A (en) | 2019-12-19 | 2019-12-19 | High-surface-tension, small-gap, high-smoothness and low-friction antifouling paint |
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| Publication Number | Publication Date |
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| CN111393968A true CN111393968A (en) | 2020-07-10 |
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|---|---|---|---|
| CN201911324093.2A Pending CN111393968A (en) | 2019-12-19 | 2019-12-19 | High-surface-tension, small-gap, high-smoothness and low-friction antifouling paint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111393968A (en) |
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2019
- 2019-12-19 CN CN201911324093.2A patent/CN111393968A/en active Pending
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