70results about How to "Improve salt water resistance" patented technology

The invention relates to a hydroxyl acrylic emulsion containing phosphate ester groups, which is an emulsion formed by neutralization, salifying, watering and emulsifying of an acrylate copolymer which is formed by copolymerization of acrylate monomers in the presence of an initiator and a hydrophilic solvent. The percentage of the acrylate monomers in the gross weight portion of monomers is as follows: acrylate monomers with hydroxyl account for 5 to 20 percent; acrylate monomers without hydroxyl account for 60 to 90 percent; and acrylate monomers containing the phosphate ester groups account for 1 to 20 percent. The amount of the initiator and the amount of a neutralizing agent account for 0.2 to 1 percent and 1 to 5 percent of the gross weight portion of the acrylate monomers respectively; the ratio of the amount of the hydrophilic solvent to the total amount of the acrylate monomers is 1.0 to 1.5; and the amount of deionized water is at least 80 percent of the amount of the hydrophilic solvent. The emulsion can be taken as aqueous bicomponent anticorrosive coating, and both the anticorrosive property and the adhesive force of the coating are superior to those of coating prepared by the prior acrylic emulsion.

The invention provides black organic silicon heat resisting paint and a preparation method thereof. The black organic silicon heat resisting paint is prepared from organic silicon resin, black paints, filler, a carbon black dispersant, a solvent, an anti-settling agent and a curing agent in parts by weight. Two black paints are combined in use and the carbon black dispersant is soaked and dispersed in advance, so that the heat resistance and relative blackness of the paint are improved, and the coarseness return condition of the paint is further avoided, and meanwhile, the paint film has a certain blackness and good appearance. The black organic silicon heat resisting paint prepared by the invention has luster and maintains the luster at temperatures above 300 DEG C, and has higher heat resistance. The hardness of the paint film can reach above 0.5, and the hardness of the paint film is improved.

The invention discloses a high-performance silicone-acrylate-modified water-based epoxy emulsion and a production method thereof, relating to the technical field of production of coatings used in the chemical industry field. The emulsion is prepared with a core-shell mechanism process; in a core layer, a grafted polymer consists of low molecular bisphenol A epoxy resin, epoxy group siloxane and acrylic ester; a shell body consists of hydroxyl-containing siloxane and acrylic ester; and the shell body and the core layer are subjected to interpenetration graft polymerization. In the invention, epoxy resin is modified with an organic silicon acrylic acid monomer, so that a dense crosslinked netlike structure with a special interpenetration network and excellent enclosed shielding performance is obtained. Multiple series of anti-corrosive paints can be prepared on the basis of the high-performance silicone-acrylate-modified water-based epoxy emulsion provided by the invention by taking mixed modified amine as a curing agent. The emulsion has the advantages of easy and convenient production process, saving in energy, environmental friendliness, easiness for coating construction, low sensitivity to water vapor and temperature, extremely high substrate adhesion, high corrosion resistance, high chemical stability and wide formula adjusting range.

The invention aims to provide a tin-zinc alloy electroplating method. The method is performed under the following conditions: plating bath temperature: 15-25 DEG C; plating solution stirring speed: 50-200m/min; and cathodic current density: 5-100A/dm2. The tin-zinc alloy electroplating method is obtained by selection of a plating bath temperature, a cathode current density and the like and the use of a specific tin-zinc alloy plating bath, and the tin-zinc alloy plating obtained using the method has strong corrosion resistance and reduced pollution, and is an ideal substitute for cadmium plating.

The invention relates to a marine antifouling coating technology, and aims to provide a hyperbranched silane modified polyurethane composite polysiloxane antifouling coating and a preparation method thereof. The coating is a three-liquid type product, wherein the main paint is formed by mixing organopolysiloxane containing at least two condensation reactive groups, filler and a xylene solvent; thecross-linking curing agent is formed by mixing hyperbranched silane modified polyurethane, organosilane (which can be subjected to condensation reaction with condensation reactive groups of main paint resin), partial hydrolysate of the organosilane, and a xylene solvent; wherein the curing accelerator is formed by mixing a silane coupling agent, an organic tin catalyst and a xylene solvent. According to the present invention, the adhesion of the polysiloxane low surface energy antifouling finishing coat coating to the epoxy primer can be enhanced, and the low surface energy antifouling finishing coat has advantages of excellent fresh water resistance, salt and alkali corrosion resistance, long-term stable existence at the room temperature, environmental protection requirement meeting, andlow application cost; good rheological performance and film forming performance are achieved, and then good construction performance is achieved; the synthesis method is relatively simple and convenient for industrial production.

The invention provides water-based anticorrosive paint. The water-based anticorrosive paint comprises, by weight, 82-95 parts of phenyl glycidyl ether modified polyaniline, 60-80 parts of epoxy resin, 30-60 parts of alkyd resin, 20-40 parts of modified polyurethane, 10-15 parts of modified nanometer titania, 5-12 parts of zinc phosphate, 6-18 parts of aluminum phosphate, 5-12 parts of imvite, 3-8 parts of mica powder, 2-9 parts of talcum powder, 4-14 parts of quartz powder, 8-18 parts of pigment, 2-8 parts of defoaming agents, 3-6 parts of dispersing agent, 1-5 parts of flatting agents, 4-9 parts of coalescing agents and 60-83 parts of water. The water-based anticorrosive paint is good in antiseptic property, excellent in waterproofness, long in service life and low in cost.

The present invention is a system and method for flushing marine engines with fresh water comprising a three way valve configured to receive three hose connections, a fresh water inlet; hoses to connect said valve to a marine engine; and union rings at the junction of each hose connection.

The invention provides organic silicon heat-resistant finish paint and a preparation method thereof. The organic silicon heat-resistant finish paint consists of an organic silicon resin, aluminum powder, mica powder, talcum powder, an anti-settling agent, a solvent and the like. The organic silicon heat-resistant finish paint has good high-temperature performance and high drying property, is subjected to surface drying within an hour and is subjected to hard drying within four hours; the adhesion force and corrosion resistance of the organic silicon heat-resistant finish paint are obviously improved.

The invention discloses a water-based silicone-acrylic mica iron oxide anti-corrosion coating. The anti-corrosion coating is prepared from the following raw materials in parts by weight: 30-50 parts of silicone-acrylic base material, 20-41 parts of pigment, 1-10 parts of auxiliary pigment, 4-15 parts of filler, 5-20 parts of water and 1-20 parts of assistant, wherein the pigment is micaceous iron oxide gray; the auxiliary pigment is at least one of rutile titanium dioxide, nano-titanium dioxide, phthalocyanine pigment, compound pigment and iron oxide pigment; the weight ratio of the auxiliary pigment to the pigment is (1-10):(20-41); the silicone-acrylic base material is water-based silicone-acrylic emulsion, a mixture of water-based silicone-acrylic emulsion and water-based pure silicone-acrylic emulsion or a mixture of water-based silicone-acrylic emulsion and water-based styrene-acrylic emulsion. By adopting the coating, not only is the water, acid and saline resistance increased, but also the corrosion resistance is excellent.

The invention relates to a wear-resistant nonskid polyurethane deck paint, and a manufacture method thereof. The manufacture method comprises the following steps of: adding a hydroxyl acrylic resin, polyether polyol, hydroxyl-containing fluorocarbon acrylic resin, a polyacrylate copolymer solution, poly(methyl alkyl siloxane) solution and [b-[3-(2-H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl]-1-oxopropyl]-hydroxypoly(oxo-1,2-ethanediyl) to a mixed solvent of xylene, n-butyl acetate, methyl isobutyl ketone and butanone for high-speed stirring; adding rutile titanium white powder, talcum powder, aluminum oxide ceramic powder, sericite powder, silicon micropowder, carbon black and gas-phased silicon dioxide; milling with a sand mill while controlling fineness of a mixture not higher than 60 mu m to obtain a liquid A; and forming a liquid B by a mixed solution of 1,6-hexamethylene diisocyanate tripolymer, anhydrous xylene and n-butyl acetate, and mixing 1 weight part of the liquid A with 0.2-1.0 weight part of the liquid B for use. The obtained wear-resistant nonskid polyurethane deck paint can be used for the corrosion protection of the steel surfaces of deck and ocean facilities.

The invention discloses an organic silicon polyurethane composite modified alkyd resin coating composition and a preparation method thereof. The double-component coating composition contains the components in parts by weight: 0.3 to 1.2 parts of A and 6 parts of B, wherein the component A is modified active polysiloxane; the component B comprises alkyd resin, solvent, pigment and filler, wetting dispersant, leveling agent and anti-skinning agent; and when in use, the component A and the component B are mixed uniformly according to the proportion. The composition B is prepared by the following steps of: 1) uniformly mixing, abrading and dispersing the raw materials; and 2) adding the leveling agent and the anti-skinning agent to the abrasive. The coating composition disclosed by the invention has excellent comprehensive properties including good adhesion, salt spray resistance, salt water resistance, ageing resistance and the like, and is suitable for heavy-duty coating protection of a steel structure.

The invention discloses a high-solid anti-rust and anti-corrosion coating. The coating comprises a component A and a component B in the weight ratio of 5: 1, wherein the component A comprises the following components in parts by weight: 18-22 parts of first epoxy resin, 18-24 parts of second epoxy resin, 10-15 parts of magnet powder, 2-10 parts of iron oxide red, 3-6 parts of zinc phosphate, 1-6 parts of zinc powder, 0.1-0.2 part of a dispersant, 0.5-0.7 part of modified bentonite, 0.2-0.4 part of nano-silicon dioxide, 0.2-0.3 part of an assistant and 12-15 parts of a diluent; and the component B comprises the following components in parts by weight: 56-62 parts of a first amine curing agent, 12-18 parts of a second amine curing agent and 20-30 parts of ethanol. The high-solid anti-rust and anti-corrosion coating adopts two different types of epoxy resin and curing agents to form a film by crosslinking and curing. The film-forming mechanism is that active H<+> is contained in the amine curing agents and can react with epoxy groups in epoxy resin at normal temperature and form a reticular structure by crosslinking; and the reticular structure is dense and hard, good in anti-corrosion performance, strong in adhesion and outstanding in chemical resistance.

The invention discloses an aqueous modified polyester rust-proofing paint, which comprises the following parts: 65%-85% resin, 12%- 30% dye, 0-5% fill, 1%-5% anti-settling powder and 0.4%-3% adjuvant.

The invention discloses a technological method of preparation of a self-emulsified waterborne epoxy coating, and the technological method comprises the following steps: A, epoxy resin is ground, an emulsifier is added to the ground epoxy resin, and stirring is conducted, so that an epoxy resin dispersion is obtained; B, the nanoscale epoxy resin obtained in the step A is added to an aqueous solution of an amidated polyamine emulsifier, and heating is conducted to obtain an epoxy resin aqueous dispersion system; C, by using the waterborne epoxy resin obtained through the step A and step B as a base material, the epoxy coating is prepared; D, a mixed emulsion obtained in the step C is heated at 100 to 105 DEG C for 15 to 30 minutes, so that a flaky semi-finished product is obtained; and E, the flaky semi-finished product obtained in the step D is ground, and testing and packing are conducted. The coating disclosed by the invention reduces the coating times and the cost of applying the coating to the steel structure products, extends the service life of the steel structure products and improves the weather resistance and salt-solution resistance.

The invention belongs to the technical fields of pre-coating primers and preparation methods thereof. The invention discloses a waterborne acrylic acid modified alkyd pre-coating primer for a railwayvehicle and a preparation method of the pre-coating primer. The main technical characteristics of the pre-coating primer are that the waterborne acrylic acid modified alkyd pre-coating primer for therailway vehicle comprises water-based resin, wherein the water-based resin is prepared from the following components in parts by weight: 2-4 parts of plant oil, 1.29-1.47 parts of a polyhydric alcohol, 20-40 parts of saturated binary acid, 20-40 parts of unsaturated binary acid, 10-20 parts of acrylic acid, 10-20 parts of methacrylic acid, 1.5-2.0 parts of butyl acrylate, 20-40 parts of styrene, 20-40 parts of a cosolvent, 15-30 parts of a neutralizer, 10-20 parts of xylene, 0.01-0.03 part of an initiator, and 29-32.5 parts of softened water with conductivity of less than or equal to 10 [mu]S/cm. The resin is used for preparing the pre-coating primer which is a polymer taking lipophilic alkyd as a core and taking a hydrophilic acrylate copolymer as a shell. The particle size is small, compactness of the obtained paint film is high, the adhesive force is strong, and corrosion resistance is good.

The invention relates to a natural rubber chloroprene rubber composition for a seawater-resistant rubber support as well as a preparation method and application of the natural rubber chloroprene rubber composition. The composition comprises the following components in parts by weight: 50-85 parts of natural rubber, 15-50 parts of chloroprene rubber, 5-15 parts of a vulcanization system and 2.5-7.5 parts of a compatilizer, the vulcanization system comprises a vulcanizing agent, an acid acceptor and a vulcanization accelerator, the vulcanizing agent is selected from one or a combination of sulfur and dicumyl peroxide, and the acid acceptor is selected from one or a combination of zinc oxide and magnesium oxide; the accelerant is selected from one or a combination of two of dibenzothiazyl disulfide and ethylene thiourea (2-thiol imidazoline); the compatilizer is chlorinated butyl rubber. The composition provided by the invention has excellent salt water resistance, thermal aging resistance and low temperature resistance.

The invention discloses a construction method of a water-based heavy-duty anti-corrosion fluorocarbon coating. The construction method comprises the following steps of removing oil stains on the surface of steel by using an alkaline degreasing agent, and washing with water after cleaning; removing rust scale by using acid pickling, removing the rust scale on the surface of the steel, and then conducting water washing; adding a phosphating agent for phosphating to form a phosphating film; adopting water-based heavy-duty anti-corrosion fluorocarbon paint as primer paint to be sprayed, being thespraying thickness 10-20 microns, and forming a primer coating through maintenance; using the water-based heavy-duty anti-corrosion fluorocarbon coating as a finish paint coating to be sprayed, beingthe spraying thickness 10-30 microns, and forming a finish paint protective coating through maintenance. According to the construction method of the water-based heavy-duty anti-corrosion fluorocarboncoating, the combination degree of the primer, the finish paint and the surface of the steel is high, the adhesive force of the coating is improved, the wear resistance, salt water resistance, weatherresistance and other properties of the coating are enhanced, the corrosion resistance of the steel is improved, meanwhile, the obtained coating is flat and uniform, the coating is lighter and thinner, the less paint can be used, cost is reduced, and construction is convenient.

The invention discloses an environment-friendly anticorrosive paint. The environment-friendly anticorrosive paint is prepared from following ingredients, by weight, 18 to 40 parts of novolac epoxy, 5 to 15 parts of calcium carbonate, 4 to 8 parts of kaolin, 2 to 9 parts of titanium dioxide, 12 to 24 parts of high chlorinated polyethylene resin, 1 to 3 parts of zinc borate, 2 to 6 parts of antimony oxide, 3 to 6 parts of a plasticizer, 2 to 4 parts of a dispersant, 1 to 5 parts of an antifoaming agent, and 2 to 4 parts of an antiseptic. Synergistic effects of the ingredients are excellent; film formation drying time is short; hardness is high; application of a mildew inhibitor is capable of inhibiting generation of mildew; application of the antiseptic is capable of improving salt water resistance, weatherability, and antiseptic property of the environment-friendly anticorrosive paint; and cooperation of the mildew inhibitor and the antiseptic is capable of prolonging lasting time of antimould effects.

The invention belongs to the technical field of mining paint and relates to mining nitro mixed paint designed for a mine environment. The technical scheme includes that the mining nitro mixed paint is prepared from nitro base materials, modified alkyd resin, a resin cross-linking agent, ultrafine calcium, precipitated barium sulfate, a combined solvent, a drier, a passivator, a waterproof cover agent and pigments. The mining nitro mixed paint is long in service life, excellent in water resistance and salt water resistance and widely applicable to mines.