CN113637368B - Fluorocarbon coating and preparation method and application thereof - Google Patents
Fluorocarbon coating and preparation method and application thereof Download PDFInfo
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- C09D127/12—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Coating compositions based on derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
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- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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Abstract
The invention discloses a fluorocarbon coating and a preparation method and application thereof, and belongs to the technical field of coating preparation. The fluorocarbon coating is prepared by mixing a component A and a component B according to the mass ratio of 10 (0.8-1); the component A comprises 60-65 parts of fluorocarbon resin, 5-10 parts of modified crystal whisker zinc oxide, 5-10 parts of modified silicon dioxide, 0.3-0.5 part of zinc molybdate, 4-8 parts of zinc borate, 0.3-0.5 part of zinc sulfate, 0.5-1.8 parts of dispersant, 0.2-0.5 part of flatting agent, 0.1-0.3 part of defoaming agent and 12-14 parts of solvent. The invention also discloses a preparation method of the fluorocarbon coating, which is obtained by mixing the component A and the component B. The invention also provides application of the fluorocarbon coating in manufacturing a surface coating of a marine ship. The fluorocarbon coating belongs to a high-solid environment-friendly coating, and the mechanical property of the fluorocarbon coating is ensured, and the corrosion resistance of the fluorocarbon coating is improved.
Description
Technical Field
The invention relates to the technical field of paint preparation, in particular to a fluorocarbon paint and a preparation method and application thereof.
Background
The part below the waterline of the ship is soaked in seawater for a long time, and is corroded not only by the seawater itself but also by various marine organisms adhered to the surface of the material. The ship body which is not soaked in seawater, the humid inner cabin, the weather deck and other areas are also in the marine atmosphere corrosion environment for a long time. The metal component parts of the vessel are subject to gradual failure due to prolonged periods of varying degrees of corrosion from seawater, marine atmospheric corrosion, and microbial corrosion. Corrosion in the marine environment has a great negative impact on marine economic benefits and marine military safety.
Most of the currently reported marine environment sterilization and anticorrosion coatings are conventional solvent-based coatings or water-based low-VOC (volatile organic compounds) coatings, and although the VOC emission of the water-based coatings is obviously reduced compared with that of the conventional solvent-based coatings, the water-based coatings have the defects of easy shrinkage, higher requirements on construction environmental conditions and generally need high-temperature baking and drying to form films. The conventional solvent-based paint mainly comprises high molecular weight resin, filler and solvent, generally has low solid content, uses more organic solvent, has high content of volatile organic compounds in a coating film during construction, is low in safety and environmental protection, and causes harm to human bodies and the environment. Based on the current situation, the development of a solvent type sterilization marine anticorrosive coating with high solid content is urgently needed.
In the high-solid solvent-based coating, the usage amount of an organic solvent is reduced, and a low-molecular-weight and low-viscosity resin with a molecular weight smaller than that of a conventional resin is required to be used as a raw material to ensure reasonable construction viscosity. The smaller the molecular weight of the resin is, the less the number of active groups participating in crosslinking in the molecular chain is, the lower the overall polymerization degree of the matrix resin is inevitably caused, and the lower the network crosslinking degree of the matrix resin is compared with that of the conventional coating, which inevitably affects the mechanical property and the medium permeation resistance of the coating, so that a special functional additive is required to be further adopted to improve the mechanical property and the corrosion resistance of the coating.
Disclosure of Invention
The invention aims to overcome the technical defects, provides a fluorocarbon coating, and a preparation method and application thereof, and solves the technical problems of poor mechanical property and corrosion resistance caused by the adoption of low-molecular-weight resin due to the requirement of obtaining high solid content in the coating in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention provides a fluorocarbon coating and a preparation method and application thereof.
The invention provides a fluorocarbon coating which is prepared by mixing a component A and a component B according to the mass ratio of 10 (0.8-1); the component A comprises 60-65 parts of fluorocarbon resin, 5-10 parts of modified crystal whisker zinc oxide, 5-10 parts of modified silicon dioxide, 0.3-0.5 part of zinc molybdate, 4-8 parts of zinc borate, 0.3-0.5 part of zinc sulfate, 0.5-1.8 parts of dispersant, 0.2-0.5 part of flatting agent, 0.1-0.3 part of defoamer and 12-14 parts of solvent according to parts by weight; the component B is aliphatic polyisocyanate; the modified crystal whisker zinc oxide is prepared by modifying crystal whisker zinc oxide through a coupling agent; the modified silicon dioxide is prepared by modifying silicon dioxide through a silane coupling agent.
Further, the modified whisker zinc oxide or the modified silicon dioxide is prepared by the following steps:
preparing a mixed solvent according to the volume ratio (10-11) of ethanol to water being 1, and then mixing the mixed solvent with whisker zinc oxide or silicon dioxide according to the mass ratio 1 (30-35) of the whisker zinc oxide or the silicon dioxide to the mixed solvent to obtain a mixed solution;
and (2) mixing the mixed solution with a silane coupling agent according to the mass ratio of 1 (12-13), then adjusting the pH value to 3.5-4.5, then standing and sealing, and then reacting at 60-70 ℃ to obtain the modified crystal whisker zinc oxide or the modified silicon dioxide.
Furthermore, the diameter of the whisker zinc oxide is 0.5-5 μm, and the length is 10-50 μm.
Further, the average particle size of the silica is 30 to 35nm.
Further, the silane coupling agent is one or two of KH550 and KH 570.
Further, the dispersant is one or two of BASF4401 or BYK 161.
Further, the fluorocarbon resin is a mixed fluorocarbon resin of HLR-6 and HLR-670, and the mass ratio of the HLR-6 to the HLR-670 is 1 (1-3).
Further, the aliphatic polyisocyanate is one or two of Bayer N3390 or Basonat HI-190; when the aliphatic polyisocyanate is a mixture of Bayer N3390 and Basonat HI-190, the mass ratio of the Bayer N3390 to the Basonat HI-190 is 1 (1-1.2).
In addition, the invention also provides a preparation method of the fluorocarbon coating, which comprises the following steps: and mixing the component A and the component B according to the proportion, and stirring at the speed of 500r/min-800r/min to obtain the fluorocarbon coating.
Further, the invention also provides application of the fluorocarbon coating or the fluorocarbon coating prepared by the preparation method in preparation of a surface coating of a marine ship.
Compared with the prior art, the invention has the beneficial effects that:
the inorganic oxide filler whisker zinc oxide and the nano-silica with high hardness are used, and are modified by the silane coupling agent, and a microscopic inorganic matter reinforcing network is formed in the coating through the coupling action, so that when the coating is prepared, the coating hardness is enhanced through the high hardness characteristic of the inorganic filler, and simultaneously, the organic chain segment of the silane coupling agent molecule modified on the surface and the organic chain segment between the coatings form bonding actions such as van der Waals/hydrogen bonding force and the like, so that the link strength between the inorganic component and the organic component in the coating is remarkably increased, the problem that the crosslinking degree of low-molecular-weight fluorocarbon resin is reduced compared with the conventional high-molecular-weight resin is solved, and the mechanical property of the low-molecular-weight fluorocarbon resin is further enhanced; the zinc sulfate, the zinc molybdate and the zinc borate added in the coating can enhance the anticorrosion function of the coating from two aspects of action ways: on one hand, the three additives contain zinc ions, provide a stronger sterilization function and can inhibit the adhesion of living microorganisms and the microbial corrosion caused by the adhesion; on the other hand, the zinc salts belong to inorganic corrosion inhibitor substances and have good synergistic corrosion inhibition effect. After the coating is prepared, if a medium permeates into the coating or an interface between the coating and a matrix, the zinc salt can be dissolved in the medium, and the cation part, namely zinc ions, forms a protective film by generating products such as zinc hydroxide, basic zinc carbonate and the like to cover an anode area on the metal surface; molybdate and borate in anions can be adsorbed and deposited on the metal surface, or the property of a metal surface film is changed through the oxidation of the molybdate and borate, so that the effects of inhibiting active dissolution of metal and promoting passivation of the metal are achieved, the corrosion inhibition effect of the corrosion inhibitor can obviously enhance the corrosion resistance of a matrix (coated metal) and prolong the service life of the matrix, the mechanical property of the coating can be ensured under the coordination of all components, the corrosion resistance is improved, the hardness is up to 5H, the coating has better salt mist resistance and sodium hydroxide resistance, the salt mist resistance is up to 3500H, and the 10% sodium hydroxide resistance can be up to 30 days.
In addition, zinc borate and whisker zinc oxide in the corrosion inhibitor have the flame-retardant function, and the zinc borate and the whisker zinc oxide are added into the coating to endow the coating with the fireproof function, so that the coating has multiple functions.
Detailed Description
The specific embodiment provides a fluorocarbon coating, which is prepared by mixing a component A and a component B according to the mass ratio of 10 (0.8-1); the component A comprises 60-65 parts of fluorocarbon resin, 5-10 parts of modified crystal whisker zinc oxide, 5-10 parts of modified silicon dioxide, 0.3-0.5 part of zinc molybdate, 4-8 parts of zinc borate, 0.3-0.5 part of zinc sulfate, 0.5-1.8 parts of dispersant, 0.2-0.5 part of flatting agent, 0.1-0.3 part of defoamer and 12-14 parts of solvent according to parts by weight; the component B is aliphatic polyisocyanate; the modified crystal whisker zinc oxide is prepared by modifying crystal whisker zinc oxide through a coupling agent; the modified silicon dioxide is prepared by modifying silicon dioxide through a silane coupling agent.
Further, in the present embodiment, the modified whisker zinc oxide or the modified silica is prepared by the following steps:
preparing a mixed solvent according to the volume ratio (10-11) of ethanol to water being 1, then mixing the mixed solvent according to the mass ratio 1 (30-35) of crystal whisker zinc oxide or silicon dioxide to the mixed solvent to obtain a mixed solution, magnetically stirring the mixed solution for 20-30min, and ultrasonically dispersing for 30-40min; wherein the diameter of the whisker zinc oxide is 0.5-5 μm, and the length is 10-50 μm; the average particle size of the silicon dioxide is 30-35nm;
mixing the mixed solution after ultrasonic dispersion with a silane coupling agent according to a mass ratio of 1 (12-13), adjusting the pH value to 3.5-4.5 by oxalic acid, standing at room temperature for hydrolysis for 1-1.5h, sealing, magnetically stirring at 60-70 ℃ for reaction for 90-120min, suction-filtering the mixed solution, washing with absolute ethyl alcohol for 3 times, maintaining at 110-120 ℃ in a thermostat for 2-3h for drying, and grinding the product by using a mortar to obtain the modified whisker zinc oxide or the modified silicon dioxide.
Further, in the present embodiment, the silane coupling agent is one or both of KH550 and KH 570; the dispersant is one or two of BASF4401 or BYK 161; the leveling agent is one or both of BYK354 and BYK 399; the defoaming agent is one or two of BYK1790 or BYK8801 defoaming agent; the fluorocarbon resin is mixed fluorocarbon resin of HLR-6 and HLR-670, and the mass ratio of the HLR-6 to the HLR-670 is 1 (1-3); the aliphatic polyisocyanate is one or two of Bayer N3390 or Basonat HI-190; when the aliphatic polyisocyanate is a mixture of Bayer N3390 and Basonat HI-190, the mass ratio of the Bayer N3390 to the Basonat HI-190 is 1 (1-1.2); the solvent is a mixed solvent of propylene glycol monomethyl ether acetate (PMA) and n-Butyl Acetate (BAC), and the mass ratio of the PMA to the BAC is 1 (0.35-0.55).
In the fluorocarbon coating in the embodiment, firstly, in order to realize a high-solid formulation, the base resin is low-molecular-weight, low-viscosity and high-solid resin, and the fluorocarbon resin with lower surface energy is selected as the resin type, so that the surface adhesion is greatly weakened compared with other types of resin coatings such as epoxy, acrylic and polyurethane, the bacterial adhesion can be obviously reduced, and further, the bacteria can be effectively inhibited under the action of zinc-containing chemicals with the functions of inhibiting bacteria and sterilizing. In addition, the added nano reinforcement modified silicon dioxide is also a thixotropic agent with excellent effect, and the problem of reduction of rheological property of the high-solid paint is solved.
Meanwhile, zinc borate is a halogen-free environment-friendly flame retardant fire retardant, and whisker ZnO also improves the fire resistance of the coating to a certain extent, so that the formula designed by the application not only can obtain excellent characteristics of high solid content, antibiosis, corrosion resistance and the like, but also greatly enhances the fire resistance of the coating, can effectively slow down the spread of fire in the fire process, prevents the substrate and the back fire surface from rapidly heating up, and can help people escape from fire fields and organize rescue for valuable time.
In addition, the specific embodiment further includes a preparation method of the fluorocarbon coating, which includes the steps of: and mixing the component A and the component B according to the proportion, and then stirring for 20-30min at the speed of 500-800 r/min to obtain the fluorocarbon coating.
The specific embodiment further comprises an application of the fluorocarbon coating or the fluorocarbon coating prepared by the preparation method in the preparation of a surface coating of a marine vessel.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
Example 1
The embodiment provides a fluorocarbon coating, which is prepared by mixing a component A and a component B, namely Bayer N3390, according to a mass ratio of 10.8, and then putting the mixture into a high-speed stirrer for stirring for 20min at a speed of 800 r/min;
the component A comprises 33 parts of HLR-6 resin and HLR-670 resin, 5 parts of modified crystal whisker zinc oxide, 10 parts of modified silicon dioxide, 0.3 part of zinc molybdate, 4 parts of zinc borate, 0.3 part of zinc sulfate, 1.1 part of dispersant BYK161, 0.5 part of flatting agent BYK399, 0.3 part of defoaming agent BYK8801, 9 parts of solvent PMA and 3.5 parts of BAC.
The modified crystal whisker zinc oxide or the modified silicon dioxide is prepared by the following steps:
preparing a mixed solvent according to the volume ratio of ethanol to water of 10; wherein the diameter of the whisker zinc oxide is 0.5-5 μm, and the length is 10-50 μm; the average particle size of the silicon dioxide is 30nm;
mixing the mixed solution subjected to ultrasonic dispersion with a silane coupling agent KH550 according to a mass ratio of 1.
Example 2
The embodiment provides a fluorocarbon coating, which is prepared by mixing a component A and a component B Basonat HI-190 according to the mass ratio of 10.9, and then putting the mixture into a high-speed stirrer to stir for 20min at the speed of 800 r/min;
the component A comprises 20 parts of HLR-6 resin, 45 parts of HLR-670 resin, 10 parts of modified crystal whisker zinc oxide, 5 parts of modified silicon dioxide, 0.5 part of zinc molybdate, 6 parts of zinc borate, 0.4 part of zinc sulfate, 0.5 part of dispersant BYK161, 0.5 part of flatting agent BYK399, 0.1 part of defoaming agent BYK8801, 8 parts of solvent PMA and 4 parts of BAC.
The modified crystal whisker zinc oxide or the modified silicon dioxide is prepared by the following steps:
preparing a mixed solvent according to the volume ratio of ethanol to water of 11, then mixing the mixed solvent according to the mass ratio of whisker zinc oxide or silicon dioxide to the mixed solvent of 1; wherein the diameter of the whisker zinc oxide is 0.5-5 μm, and the length is 10-50 μm; the average particle size of the silicon dioxide is 35nm;
mixing the mixed solution subjected to ultrasonic dispersion with a silane coupling agent KH550 according to a mass ratio of 1.
Example 3
The embodiment provides a fluorocarbon coating, which is prepared by mixing a component A and a component B according to a mass ratio of 10;
the component A comprises 15 parts of HLR-6 resin, 45 parts of HLR-670 resin, 8 parts of modified whisker zinc oxide, 8 parts of modified silicon dioxide, 0.3 part of zinc molybdate, 8 parts of zinc borate, 0.4 part of zinc sulfate, 0.8 part of BASF4401 dispersant, 0.3 part of BYK354 flatting agent, 0.2 part of BYK1790 antifoaming agent, 10 parts of solvent PMA and 4 parts of solvent BAC;
the component B consists of a Bayer N3390 curing agent and a Basonat HI-190 curing agent in a mass ratio of 1:1;
the modified crystal whisker zinc oxide or the modified silicon dioxide is prepared by the following steps:
preparing a mixed solvent according to the volume ratio of ethanol to water of 11, then mixing the mixed solvent according to the mass ratio of whisker zinc oxide or silicon dioxide to the mixed solvent of 1; wherein the diameter of the whisker zinc oxide is 0.5-5 μm, and the length is 10-50 μm; the average particle size of the silicon dioxide is 30nm;
mixing the mixed solution after ultrasonic dispersion with a silane coupling agent KH550 according to a mass ratio of 1.
Example 4
The embodiment provides a fluorocarbon coating, which is prepared by mixing a component A and a component B according to a mass ratio of 10.9, and then putting the mixture into a high-speed stirrer to stir for 30min at a speed of 500 r/min;
the component A comprises, by weight, HLR-6 parts, HLR-670 resin 40 parts, modified crystal whisker zinc oxide 8 parts, modified silicon dioxide 8 parts, zinc molybdate 0.5 part, zinc borate 8 parts, zinc sulfate 0.4 part, BASF4401 dispersant 1.8 parts, BYK354 leveling agent 0.4 part, BYK1790 defoaming agent 0.5 part, solvent PMA8 part and BAC 4.4 part.
The component B consists of a Bayer N3390 curing agent and a Basonat HI-190 curing agent in a mass ratio of 1.2.
The modified crystal whisker zinc oxide or the modified silicon dioxide is prepared by the following steps:
preparing a mixed solvent according to the volume ratio of ethanol to water of 10; wherein the diameter of the whisker zinc oxide is 0.5-5 μm, and the length is 10-50 μm; the average particle size of the silicon dioxide is 30nm;
mixing the mixed solution after ultrasonic dispersion with a silane coupling agent KH550 according to a mass ratio of 1.
Comparative example 1
The fluorocarbon coating of this comparative example differs from that of example 3 in that no modified zinc oxide whiskers, modified silica, zinc sulfate, zinc molybdate, and zinc borate were added, and the other preparation methods and component formulations were the same.
Comparative example 2
The fluorocarbon coating of this comparative example differs from example 3 in that zinc sulfate, zinc molybdate, and zinc borate are not added, and the other preparation methods and component formulations are the same.
Comparative example 3
The fluorocarbon coating of this comparative example differs from that of example 3 in that no modified zinc oxide whiskers, zinc sulfate, zinc molybdate, and zinc borate were added, and the other preparation methods and component formulations were the same.
Comparative example 4
The fluorocarbon coating of this comparative example differs from example 3 in that no modified zinc oxide whiskers were added, and the other preparation methods and component formulations were the same.
The fluorocarbon coatings of examples 1 to 4 and comparative examples 1 to 4 and the commercially available fluorocarbon coatings were applied to the surface of A3 steel by brush coating to obtain corresponding coatings, and the coatings were subjected to various basic performance tests, and the results are shown in tables 1 and 2.
TABLE 1 Performance test results for coatings made from fluorocarbon coatings of examples 1-4
As can be seen from Table 1, the solid contents of the coatings prepared in examples 1 to 4 are all more than 70%, the coatings belong to high-solid coatings, the coatings have high hardness which can reach 5H, and the coatings also have good salt spray resistance and sodium hydroxide resistance, wherein the salt spray resistance can reach 3500H, the 10% sodium hydroxide resistance can reach 30 days, and the coatings also have excellent mildew resistance and fire resistance.
Table 2 results of performance testing of coatings from comparative examples 1-4 and commercial fluorocarbon coatings
As can be seen from Table 2, the coatings prepared by the comparative examples 1-4 and the commercial fluorocarbon coatings have obviously poor salt spray resistance, alkali resistance and fire resistance, and other performances such as mildew resistance and the like.
The invention provides a high-solid antibacterial, corrosion-resistant and fireproof fluorocarbon coating for marine ships and warships and a preparation method thereof by a special formula design aiming at the defects of low solid content, high organic emission, poor fireproof effect and the like of a solvent type marine ship bactericidal anticorrosive coating produced by the prior art, wherein the prepared coating has the characteristics of high solid proportion (70%), excellent mechanical property, bacterial adhesion prevention and excellent corrosion resistance, has a fireproof function, and has remarkable technical advantages.
The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the protection scope of the claims of the present invention.
Claims (6)
1. A fluorocarbon coating is characterized in that the fluorocarbon coating is prepared by mixing a component A and a component B according to the mass ratio of 10 (0.8-1); the component A comprises 60-65 parts of fluorocarbon resin, 5-10 parts of modified crystal whisker zinc oxide, 5-10 parts of modified silicon dioxide, 0.3-0.5 part of zinc molybdate, 4-8 parts of zinc borate, 0.3-0.5 part of zinc sulfate, 0.5-1.8 parts of dispersing agent, 0.2-0.5 part of flatting agent, 0.1-0.3 part of defoaming agent and 12-14 parts of solvent according to parts by weight; the component B is aliphatic polyisocyanate; the modified crystal whisker zinc oxide is prepared by modifying crystal whisker zinc oxide through a coupling agent; the modified silicon dioxide is prepared by modifying silicon dioxide through a silane coupling agent;
the modified crystal whisker zinc oxide or the modified silicon dioxide is prepared by the following steps:
preparing a mixed solvent according to the volume ratio (10-11) of ethanol to water being 1, and then mixing the mixed solvent with whisker zinc oxide or silicon dioxide according to the mass ratio 1 (30-35) of the whisker zinc oxide or the silicon dioxide to the mixed solvent to obtain a mixed solution;
mixing the mixed solution with a silane coupling agent according to a mass ratio of 1 (12-13), then adjusting the pH value to 3.5-4.5, then standing and sealing, and then reacting at 60-70 ℃ to obtain the modified crystal whisker zinc oxide or the modified silicon dioxide;
the diameter of the whisker zinc oxide is 0.5-5 μm, and the length is 10-50 μm;
the average particle size of the silicon dioxide is 30-35nm;
the fluorocarbon resin is mixed fluorocarbon resin of HLR-6 and HLR-670, and the mass ratio of the HLR-6 to the HLR-670 is 1 (1-3).
2. A fluorocarbon coating according to claim 1, characterized in that said silane coupling agent is one or both of KH550 and KH 570.
3. A fluorocarbon coating according to claim 1, characterized in that said dispersant is one or both of BASF4401 or BYK 161.
4. A fluorocarbon coating according to claim 1, characterised in that the aliphatic polyisocyanate is one or both of bayer n3390 or Basonat HI-190; when the aliphatic polyisocyanate is a mixture of Bayer N3390 and Basonat HI-190, the mass ratio of Bayer N3390 to Basonat HI-190 is 1 (1-1.2).
5. A method for preparing a fluorocarbon coating as claimed in any one of claims 1 to 4, characterized by comprising the steps of: and mixing the component A and the component B according to the proportion, and then stirring at the speed of 500r/min-800r/min to obtain the fluorocarbon coating.
6. Use of the fluorocarbon coating according to any one of claims 1 to 4 or the fluorocarbon coating prepared by the preparation method according to claim 5 in the preparation of a surface coating for a marine vessel.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP0379746B1 (en) * | 1988-11-30 | 1994-09-28 | Nippon Paint Co., Ltd. | Coating composition containing tetrapod-like zinc oxide whiskers |
| CN1793247A (en) * | 2005-12-31 | 2006-06-28 | 大连振邦氟涂料股份有限公司 | Low surface energy fluorine carbon antifouling paint |
| CN105925073B (en) * | 2016-06-27 | 2018-03-20 | 山东科技大学 | A kind of corrosion-resistant super-hydrophobic heat reflection coatings and preparation method thereof |
| CN106318056B (en) * | 2016-09-11 | 2018-11-16 | 中海油常州涂料化工研究院有限公司 | A kind of radiation resistance, easy decontamination coating and preparation method thereof |
| CN110894255B (en) * | 2019-11-28 | 2021-08-13 | 常州汉索电子材料科技有限公司 | Packaging material with high adhesion to magnesium-aluminum alloy and preparation method thereof |
| CN111548689A (en) * | 2020-06-12 | 2020-08-18 | 苏州九维电气制造有限公司 | Anti-condensation coating and preparation method thereof |
| CN112662299A (en) * | 2020-12-22 | 2021-04-16 | 苏州禾川化学技术服务有限公司 | Ship anticorrosive paint capable of preventing microbial adsorption |
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