45results about How to "Achieve antifouling effect" patented technology

The invention discloses organosilicon type marine antifouling paint binder. The structure of the paint binder is shown in the formula (1), wherein the paint binder is an organosilicon-polyurethane compound with bactericide side chain and R represents CH2CH3. The preparation method comprises the following preparation steps: 1) using chloropropylmethyldimethoxysilane and dimethyldimethoxysilicane to react and obtain chloropropyl-containing polysiloxane; 2) using chloropropyl-containing polysiloxane, tertiary amine and hydroxyl-containing tertiary amine to perform reflux reaction and generate polysiloxane with quaternary ammonium salt and hydroxyl; and 3) mixing isocyanate, butyltin dilaurate and polysiloxane with quaternary ammonium salt and hydroxyl with solvent, adding gamma-aminopropyltriethoxysilane to extend the chain and obtain prepolymer with the crosslinked group -Si(OCH2CH3), and using the prepolymer to perform crosslinking and condensation in the air and obtain the finished product. The organosilicon type binder has low surface energy performance and very good hydrophobicity; and the molecular chain has environmentally-friendly bactericide, thus the binder has very good bactericidal effect and marine antifouling effect.

The invention discloses a method for preparing biodegradable ocean antifouling polyurethane hybrid materials and a product thereof. The method for preparing the biodegradable ocean antifouling polyurethane hybrid materials and the product thereof adopt stannous octoate as a catalyst, adopts double hydroxyl functional grapheme which is prepared by adopting reduction grapheme to react with 2, 2-hydroxy benzaldehyde and N-glycine as an initiator, and the initiator triggers L-lactide monomers to prepare graphene grafted poly lactic acids through ring opening polymerization. 1, 4-butanediol and 4, 4-diphenyl methane diisocyanate prepare polyurethane prepolymers containing Isocyanate functional groups on the tail ends through condensation polymerization. The biodegradable ocean antifouling polyurethane hybrid materials are prepared by utilizing a chemical reaction between graphene grafted hydroxyl-terminated poly lactic acids and polyurethane prepolymers. The method for preparing biodegradable ocean antifouling polyurethane hybrid materials and the product thereof improve strength of target materials by leading into grapheme, and the grapheme plays the role of antibacterial function during the degradation process, and control crystallinity and hydrophobic property of grafted poly lactide by adjusting the contents of the grapheme and the L-lactide monomers, thereby effectively adjusting and controlling degradation of polyurethane. hybrid materials which are prepared through the method for preparing biodegradable ocean antifouling polyurethane hybrid materials has excellent mechanical properties and can adjust degradation rate, degradation products are non-toxic and do not pollute the environment, and can be applied in antifouling marine coatings and drug controlled release carriers in a biomedical medical engineering.

The invention discloses a fluorine-containing oxidized graphene modified polyurethane coating, a preparation method thereof and an application of the coating. The polyurethane coating comprises fluorine-containing oxidized graphene components. The specific preparation method includes the steps: taking fluorine-containing monomer modified oxidized graphene as a modifier of the polyurethane coating;mechanically blending the fluorine-containing oxidized graphene with polyurethane resin according to a certain proportion to obtain the fluorine-containing oxidized graphene modified polyurethane coating. The polyurethane coating is simple in preparation process and excellent in hydrophobic nature. The polyurethane coating is applied to automobile finish, the hydrophobic nature, the aging resistance and the mechanical property of the automobile finish can be effectively improved, and the polyurethane coating has a great market prospect in automobile paint market and even the field of coatings.

The invention relates to a nano particle modification technique and a coating technique, in particular to a bottom-surface combined type antifouling and antiseptic nanometer polysiloxane coating and a preparation method thereof. Firstly, epoxy functional groups of nanometer particles are modified by a silane coupling agent and a silicon fluoride coupling agent. Then, by mass part, 40-60 parts of polysiloxane resin, 0.2-1 part of epoxy functional group silane coupling agent modified nano SiO2, 0.2-1 part of silicon fluoride coupling agent modified nano SiO2, 0.5-1.5 parts of an anti-settling agent, 0.3-0.8 part of a leveling agent, 0.2-0.7 part of a defoaming agent, 0.4-1 part of a dispersant, 5-10 parts of a coloring pigment, 20-30 parts of an antirust pigment, 5-15 parts of a filler, and 3-8 parts of an organic solvent are taken, dispersed and grinded into the fineness less than 30[mu]m to prepare a component A. The component A and a component B are mixed to prepare the antifouling and antiseptic nanometer polysiloxane coating. The coating has a high solid characteristic, and excellent corrosion resisting, weather-proof, and antifouling performances, and is suitable for anticorrosion fields of a plurality of occasions.

The invention relates to the synthesis of a perfluoroalkyl compound containing an active end group from a hydroxyl group-containing perfluoroalkyl monomer A and a diisocyanate B in the presence of a solvent and a catalyst. And it is combined with hydroxyl-containing acrylic resin to obtain a low surface energy coating composition, which can be used on the shell of ships and submarines to reduce drag and prevent pollution, and to be used on aircraft engines to play the role of waterproof and anti-icing , Applied to the exterior walls of buildings, it has the functions of self-cleaning, anti-pollution and anti-graffiti.