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Nano modified polyurethane paint for ship and its preparing method

A polyurethane coating and nano-modification technology, which is used in polyurea/polyurethane coatings, antifouling/underwater coatings, coatings, etc., to achieve the effects of simple preparation process, improved penetration resistance, and stable storage

Inactive Publication Date: 2005-07-06
YUXIANG CHEM DALIAN CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coatings with excellent weather resistance and long-term anticorrosion performance have not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Weigh 50g of hydroxy acrylic resin FX-2820 (solid content is 60%, the hydroxyl content of the solid resin is 2.8%) in a 300ml beaker, add 8g of the above-mentioned Nanos-type nano pulp, then add 12g of xylene, 12g of n-butyl acetate, Isophorone 5g, trichloroethane 2g, then add EFKA-44 (polyamide and acid ester salt) wetting and dispersing agent 0.3g, Perenol F40 acrylic leveling agent 0.2g, fumed silica 0.5g, Titanium dioxide 7g, heavy calcium carbonate 1g, iron oxide red 1g, talc 1g, the above base material is dispersed with a high-speed disperser at 1000 rpm for 10 minutes, then ground with a sand mill for 1 hour, filtered with a 200 mesh copper mesh, and prepared into a nanometer Modified synthetic resin component of flexible polyurethane coatings, in which nano-pulp accounts for 8% of the total modified synthetic resin component; the curing agent component is Desmudur  N75 (solid content is 75%, NCO content is 16.4%). The two components are stirred according to the rat...

Embodiment 2

[0029] Weigh 50g of hydroxy acrylic resin FX-2820 (solid content is 60%, the hydroxyl content of the solid resin is 2.8%) in a 300ml beaker, add 0.2g of the above-mentioned Nanos-type nano pulp, and then add 19.8g of xylene and n-butyl acetate 12g, 5g isophorone, 2g trichloroethane, then add EFKA-44 (polyamide and acid ester salt) wetting and dispersing agent 0.3g, Perenol F40 acrylic leveling agent 0.2g, fumed silica 0.5 g. Titanium dioxide 7g, heavy calcium carbonate 1g, iron oxide red 1g, talc 1g, the above base material is dispersed with a high-speed disperser at 1000 rpm for 10 minutes, then ground with a sand mill for 1 hour, and filtered with a 200 mesh copper mesh The modified synthetic resin component of nano-modified polyurethane coatings, in which nano-pulp accounts for 0.2% of the total modified synthetic resin component; the curing agent component is Desmudur  N75 (solid content is 75%, NCO content is 16.4%). The two components are stirred according to the ratio of N...

Embodiment 3

[0031] In a 300ml beaker, weigh 50g of hydroxy acrylic resin FX-2820 (solid content is 60%, the hydroxyl content of the solid resin is 2.8%), add 18g of the above-mentioned Nanos-type nano pulp, then add 2g of xylene, 12g of n-butyl acetate, Isophorone 5g, trichloroethane 2g, then add EFKA-44 (polyamide and acid ester salt) wetting and dispersing agent 0.3g, Perenol F40 acrylic leveling agent 0.2g, fumed silica 0.5g, Titanium dioxide 7g, heavy calcium carbonate 1g, iron oxide red 1g, talc 1g, the above base material is dispersed with a high-speed disperser at 1000 rpm for 10 minutes, then ground with a sand mill for 1 hour, filtered with a 200 mesh copper mesh, and prepared into a nanometer Modified synthetic resin component of flexible polyurethane coatings, in which nano-pulp accounts for 18% of the total modified synthetic resin component; the curing agent component is Desmudur  N75 (solid content is 75%, NCO content is 16.4%). The two components are stirred according to the r...

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Abstract

The invention relates to a marine nano-modified polyurethane coating and a preparation method thereof. The coating is composed of a modified synthetic resin and a curing agent. % synthetic resin, 0-35% pigment, and the rest of the solvent; the preparation method is: firstly add the nano slurry to the synthetic resin solution, then add the rest of the solvent, additives, and pigments, disperse and grind, and filter to prepare Modified synthetic resin components for nano-modified polyurethane coatings. The present invention proposes the preparation of nano-modified polyurethane coating by adopting the method of nano-slurry, so that the nano-material is dispersed and stable in the coating, and the color retention and gloss retention of the coating are improved. The nano-modified polyurethane coating prepared by this method The coating system composed of matching primer and intermediate paint can make the parts above the waterline of the ship achieve the purpose of long-term heavy-duty anti-corrosion.

Description

Technical field [0001] The invention relates to nanotechnology and corrosion protection technology, in particular to a marine nano-modified polyurethane coating and a preparation method thereof. Background technique [0002] The parts above the waterline of the ship are exposed to salt spray and ultraviolet radiation, and face a harsher corrosive environment than the bottom of the ship. Conventional topcoats are made of phenolic or alkyd ship hull paint. The phenolic paint is made of phenyl phenol formaldehyde resin tung paint material and zinc oxide. The disadvantage is that the paint film is easy to change color and powder. The disadvantage of pure phenolic alkyd hull paint is that the paint film is still chalked, but it is better than pure phenolic hull paint. Alkyd ship hull paint is currently the most used variety in ship hull paint, and its weather resistance and water resistance are greatly improved compared to phenolic paint. Chlorinated rubber paint appears in the top co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D5/16C09D175/04
Inventor 刘福春韩恩厚柯伟
Owner YUXIANG CHEM DALIAN CO LTD