Solvent-free polymerized anticorrosive coating and preparation method thereof
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A kind of anti-corrosion coating and polymerization-type technology, applied in anti-corrosion coating, polyurea/polyurethane coating, coating, etc., can solve problems such as maintenance difficulties, and achieve the effect of wide application, strong adhesion and good deformability
Inactive Publication Date: 2014-07-30
HULUDAO YITUO IND
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Problems solved by technology
[0004] Civilian ship products have been in harsh seawater corrosion and marine atmospheric corrosion environments for a long time, and maintenance is difficult during use
Method used
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Embodiment 1
[0052] A solvent-free polymeric anticorrosion coating, in terms of mass percentage, comprises the following components:
[0053] N-330 trihydroxy polyether polyol 40%;
[0054] Isocyanate 10%;
[0055] Cytec CYMEL325 amino resin 8%;
[0056] CYCAT4045 catalyst 1%;
[0057] Petroleum resin 25%;
[0058] Cross-linking agent MOCA 3%;
[0059] Light calcium carbonate 10%;
[0060] Stannous octoate 0.5%;
[0061] UV absorber 0.5%;
[0062] Phthalocyanine green dye 0.5%;
[0063] Plasticizer (butyl benzyl phthalate) 0.5%;
[0064] Defoamer Foamaster 111 0.5%;
[0065] Coalescent alcohol ester twelve 0.5%.
[0066] The preparation method of the above-mentioned solvent-free polymeric anti-corrosion coating can be carried out as follows: according to the proportion of ingredients, under the protection of dry nitrogen, add the dehydrated N-330 trihydroxy polyether, CYCAT4045 catalyst, and isocyanate to a mixture equipped with a thermometer, stir In the reaction kettle of the de...
Embodiment 2
[0069] A solvent-free polymeric anticorrosion coating, in terms of mass percentage, comprises the following components:
[0070] N-330 trihydroxy polyether polyol 40%;
[0071] Isocyanate 10%;
[0072] Cytec CYMEL325 amino resin 15%;
[0073] CYCAT4045 catalyst 1%;
[0074] Petroleum resin 18%;
[0075] Cross-linking agent MOCA 3%;
[0076] Light calcium carbonate 10%;
[0077] Stannous octoate 0.5%;
[0078] UV absorber 0.5%;
[0079] Phthalocyanine green dye 0.5%;
[0080] Plasticizer (butyl benzyl phthalate) 0.5%;
[0081] Defoamer Foamaster 111 0.5%;
[0082] Coalescent alcohol ester twelve 0.5%.
[0083] Choose toluene diisocyanate (TDI) for isocyanate; choose C5 / C9 copolymer resin for petroleum resin. The preparation method is the same as above.
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Abstract
The invention belongs to the field of coatings and in particular relates to a solvent-free polymerized anticorrosive coating and a preparation method thereof. The coating is characterized by comprising the following components by weight percent: 30%-50% of polyether polyol, 8%-12% of isocyanate, 8%-20% of a modifier, 0.5%-2% of a catalyst, 18%-30% of fillers, 8%-12% of light calcium carbonate and 3%-8% of aids. The preparation method comprises the following steps: fully neutralizing dewatered polyether polyol, catalyst and isocyanate, performing high-speed shearing for dispersing, adding dispersed materials into a reaction kettle installed with a temperature meter, a stirring device and a reflux condenser, measuring the NCO value by using a di-n-butylamine titration method, dropwise adding, and preserving heat; adding the modifier, the fillers, light calcium carbonate and the aids after the NCO value is a theoretical value. The method is simple and safe in process, environmental friendly and energy-saving; the coating is large in adhesive power and long in service life.
Description
technical field [0001] The invention belongs to the field of coatings, and in particular relates to a solvent-free polymerized anticorrosion coating and a preparation method thereof. Background technique [0002] Shipboard products, bridge parts and the internal environment of each liquid tank are relatively complex. In the long-term marine environment with alternating dry and wet conditions, the marine atmospheric corrosion environment and seawater corrosion environment will corrode the welded parts of the steel ship compartment and the welded parts of the pressure body. Seriously, since the life of the shipboard and embedded pipelines is the same as the life of the pressure hull, it is required that the protection life of the corrosion-resistant materials for the welded parts of the steel ship compartment and the welded parts of the pressure body should be at least 30 years. In view of the above problems, it is necessary to develop anti-corrosion coatings for the inner wal...
Claims
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