77results about How to "Strong resistance to salt water" patented technology

The invention provides a water-based primer for a railroad bridge. The water-based primer comprises water-based red lead alkyd antirust primer and water-based ash cloud iron alkyd finishing coat, wherein the water-based red lead alkyd antirust primer comprises the following components in percentage by weight: 25%-30% of water-based alkyd resin, 35%-43% of national standard red lead powder, 5%-6% of environment-friendly zinc phosphate, 5%-8% of super zinc phosphate, 5%-8% of precipitated barium sulfate, 0.2%-0.3% of water-based dispersing agent, 0.1%-0.2% of water-based defoaming agents, 0.1%-0.2% of water-based foam inhibitors, 1%-2% of hydrated magnesium silicate, 0.5%-1% of water-based composite drying agents, 0.2%-0.4% of water-based anti-skinning agents, 0.5%-1% of water-based thickening agents, 0.5%-1% of neutralizing agents, 0.5%-1% of flash-rust inhibitors, 1%-2% of film-forming auxiliary agents, 0.1%-0.2% of water-based wetting agents and 7.0%-9.0% of deionized water. The product provided by the invention has the advantages of fastness in drying, high corrosion-resistant capacity and salt-fog resistant property, can achieve no blistering or rusting on a surface for more than 1000 h, is very excellent in salt-water resistant property and generates no phenomenon of blistering and rusting after being soaked into a 3% sodium chloride solution for 480 hours.

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.