Environment-friendly anti-fouling and drag-reducing composite functional coating and preparation method thereof
A composite function and environment-friendly technology, applied in the fields of marine engineering and fluid dynamics, can solve the problems of poor anti-fouling and drag-reduction effect, and achieve the effect of remarkable anti-fouling and drag-reduction effect and good engineering application prospect.
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Embodiment 1
[0030] Mix cationic polyacrylamide (CPAM) with polydimethylsiloxane, acrylic resin and xylene with anti-sedimentation agent and dispersant according to the following parts by weight, and stir evenly to make a coating;
[0031] Cationic polyacrylamide (CPAM) 3.5 parts,
[0032] 5 parts of polydimethylsiloxane,
[0033] Acrylic resin 70 parts,
[0034] 20 parts of xylene,
[0035] 1 part polyamide wax,
[0036] Dispersant 0.5 part.
[0037] Before painting, all pollutants such as oil, dust or rust on the surface of the hull or marine structure should be cleaned up. Then apply (airless spray, high-pressure air spray, brush or roller) antirust paint (such as 616 chlorinated rubber iron red thick paste) and epoxy connecting paint (such as FJ-18) in sequence. After the paint film of the previous paint is cured, the anti-fouling and drag-reducing composite functional coating can be painted. The specific construction process parameters are as follows.
[0038]
[0039] The co...
Embodiment 2
[0041] Blend cationic polyacrylamide (CPAM) with polydimethylsiloxane, fluorocarbon resin and xylene according to the following mass percentages and mix with anti-settling agent and dispersant, and stir evenly to make a coating;
[0042] Cationic polyacrylamide (CPAM) 5 parts,
[0043] 5.5 parts of polydimethylsiloxane,
[0044] Fluorocarbon resin 73 parts,
[0045] 15 parts of xylene,
[0046] 1 part polyamide wax,
[0047] Dispersant 0.5 parts.
[0048] After cleaning the substrate surface, apply anti-rust paint and epoxy connecting paint in sequence. After the paint film of the previous paint is cured, the coating operation of the anti-fouling and drag-reducing composite functional coating is carried out. After the coating is dry, the antifouling and drag reduction performance test is carried out. The results showed that, compared with the traditional tin-free self-polishing antifouling coating, the inhibition rate of diatom attachment was increased by 72%, and the nu...
Embodiment 3
[0050] Blend cationic polyacrylamide (CPAM) with polydimethylsiloxane, fluorocarbon resin and xylene according to the following mass percentages and mix with anti-settling agent and dispersant, and stir evenly to make a coating;
[0051] Cationic polyacrylamide (CPAM) 5 parts,
[0052] 5.5 parts of polydimethylsiloxane,
[0053] 30 parts of fluorocarbon resin,
[0054] Acrylic resin 30 parts,
[0055] 16 parts of xylene,
[0056] 0.5 parts of polyamide wax,
[0057] Dispersant 0.3 parts.
[0058]After cleaning the substrate surface, apply anti-rust paint and epoxy connecting paint in sequence. After the paint film of the previous paint is cured, the coating operation of the anti-fouling and drag-reducing composite functional coating is carried out. After the coating is dry, the antifouling and drag reduction performance test is carried out. The results showed that, compared with the traditional tin-free self-polishing antifouling coating, the inhibition rate of diatom a...
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