32results about How to "Salt spray resistant" patented technology

An anticorrosion and antiwear ceramic paint is prepared from epoxy resin (28.5-35 wt.portions), dibutyl phthalate (3.75-6), mixed solvent of xyrene and n-butyl ester (20-24), gas-phase SiO2 (0.5-1) and ceramic powder (38-45) which contains TiO2 (3-6.3), Al2O3 (11.7-20) and Si3N4 (16-20.45). The weight ratio of main component to slidifying agent is (14.5-17):1. It can be directly applied to the surfaces of metal, glass fibre, plastic, or concrete with the advantages of high antiwear performance and adhesion, and thin and compact coated layer.

The invention relates to a magnesium alloy conversion film treating agent and a magnesium alloy conversion film treating method. The magnesium alloy conversion film treating agent comprises, by mass, 1-20 parts of inorganic acid, 1-20 parts of zirconate, 1-20 parts of calciate, 1-20 parts of vanadate and 0.2-1 part of a dispersing agent. Compared with a traditional phosphorus-containing chromium-free magnesium alloy conversion film treating agent which causes environmental pollution, the magnesium alloy conversion film treating agent adopts 1-20 parts of the inorganic acid, 1-20 parts of the zirconate, 1-20 parts of the calciate, 1-20 parts of the vanadate and 0.2-1 part of the dispersing agent, and thus a phosphorus-free chromium-free Zr-Ga-V conversion film can be formed on the surface of magnesium alloy; and the conversion film has the advantages of being good in adhesive force, high in corrosion resistance degree and good in salt fog resistance and film forming uniformity. The magnesium alloy conversion film treating agent is particularly suitable for a treatment process of a chemical conversion film of die casting magnesium alloy, such as AZ91D magnesium alloy.

The invention provides a water-based epoxy paint and a preparation method thereof. The paint comprises an amino resin, a leveling agent, distilled water, a water-based epoxy acrylic resin, a dispersing agent, a defoaming agent, iron oxide black, superfine talcum powder, precipitated baryte, zinc phosphate, a rust inhibitor and the like; and a nano MoS2 anti-wear agent and a nano CaCO3 ultraviolet absorbent are further added to enhance the properties. By reasonably designing the component types and contents, the thickness of the paint film can reach 100 mu m above, the water resistance is greater than 240 hours, the transmittivity for ultraviolet light with the wavelength of 290-400nm is less than 0.4, the wear-resistant revolution number is up to 1000-1400, the mass loss of the paint film is less than 0.07 g/100r, and the salt spray resistance is greater than 200 hours. The paint can be brushed on the internal and external walls of an iron building, has excellent protective effect, and is especially suitable for protecting iron building cultural relics.

The invention discloses a film coated metal plate with high corrosion resistance, and a manufacturing process thereof. The film coated metal plate comprises a first corrosion-resistant film layer, a first adhesive layer, a base plate layer, a second adhesive layer and a second corrosion-resistant film layer, wherein the first corrosion-resistant film layer, the first adhesive layer, the base platelayer, the second adhesive layer and the second corrosion-resistant film layer are sequentially arranged from top to bottom, the first corrosion-resistant film layer and the second corrosion-resistant film layer respectively comprise a surface layer, a function layer and an adhesion layer, and the surface layer, the function layer and the adhesion layer are sequentially arranged from top to bottom. The manufacturing process comprises: (1) unwinding; (2) adhesive adding; (3) drying; (4) compounding; and (5) winding. According to the present invention, the film coated metal plate has advantagesof impact resistance, hot water resistance, salt spray resistance, wear resistance, stain resistance, corrosion resistance, light aging resistance, acid resistance, alkali resistance, oil resistance,good flexibility and corrosion resistance, such that the film coated metal plate has long service life; and the process method is simple, and is suitable for mass production.

The invention relates to a phosphate/polyurethane modified waterborne alkyd anticorrosive coating. The coating is composed of phosphate/polyurethane modified waterborne alkyd resin, a cosolvent, a filler, an antirust pigment, an auxiliary agent and deionized water, wherein the phosphate/polyurethane modified waterborne alkyd resin is prepared by performing a reaction on vegetable oil fatty acid, isophthalic acid, an organic acid anhydride, a diol, a branched-chain polyol, dimethylolpropionic acid, alkyl acrylate phosphate, polyisocyanate and a neutralizer. The phosphate/polyurethane modified waterborne alkyd anticorrosive coating provided by the invention has a phosphate group and a metal substrate, forms a compact phosphating film, thereby improving water resistance and rust resistance ofa coating film; and the coating is combined with the characteristics of polyurethane chemical resistance, aging resistance, flexibility and wear resistance, and the prepared phosphate/polyurethane modified waterborne alkyd anticorrosive coating has excellent adhesion, water resistance, flash rust resistance, chemical resistance, aging resistance, corrosion resistance and salt spray resistance.

The invention discloses an anti-reflection film coating liquid preparation method and belongs to the technical field of film coating liquid preparation. A tea seed extracting solution of the preparation method disclosed by the invention contains rich oxidized antibacterial substances; permanent electrostatic fields exist at the peripheries of added tourmaline particles, so that metal is preventedfrom being oxidized, electrons are prevented from being taken away, and the metal is prevented from being corroded; thus, the film coating liquid has certain salt spray resistance. The tea seed extracting solution in the preparation method disclosed by the invention is subjected to oxidizing treatment, so that the surface of the tea seed extracting solution carries many hydrophilic groups. Tea saponin in the tea seed extracting solution of the preparation method disclosed by the invention is a main green natural non-ionic surface active agent and is also called as theasaponin, oil and water can be separated on the surface of a film coating matrix, and a good cleaning effect on a film layer is generated. By means of the film coating liquid disclosed by the invention, a titanium dioxide/vanadium dioxide composite membrane layer can be formed; a vanadium dioxide crystal layer can obstruct high-energy infrared light, and titanium dioxide can improve transmittance of a film layer to visiblelight; thus, light transmittance characteristic is enhanced, the film layer has a temperature adjusting capacity when applied to glass, and the film layer has a wide application prospect.

The invention discloses a low-temperature optical mechanical system based on a SiC particle reinforced aluminum matrix composite vacuum cooling box. The cooling box is made of light high-modulus SiC particle reinforced aluminum matrix composite. A detector is connected with a corrugated pipe flange to realize five-dimensional adjustment. A light splitting assembly works in a low-temperature stateand is insulated from a heat insulation support through multiple layers. A mechanical refrigerator realizes the refrigeration and vibration reduction functions through a shock absorber, a corrugated pipe and a flexible cold chain. A slit assembly realizes low-temperature work and axial adjustment through a guide rail, the flexible cold chain, an adjusting screw, a heat insulation cylinder and a sealing ring. A telescope assembly is at normal temperature, and fine adjustment is realized through threads. The cooling box is provided with a vacuum gauge pipe, an ion pump, a vacuum flange and a metal valve, so that vacuum measurement, maintenance, temperature measurement, heating and air exhaust sealing are realized. The low-temperature optical mechanical system based on the SiC particle reinforced aluminum matrix composite vacuum cooling box, provided by the invention, has the characteristics of light weight and vibration suppression, and the telescope assembly, the slit assembly and the detector have the capability of being simultaneously adjusted at low temperature in vacuum inside and normal temperature and pressure outside, thereby being suitable for the field of medium and long wavelength spectral imaging detection.

The invention discloses crosslinkable flame-retardant fluorine-containing silicone oil, a preparation method thereof and a flame-retardant release coating. The crosslinkable flame-retardant fluorine-containing silicone oil is characterized in that the structural formula of the crosslinkable flame-retardant fluorine-containing silicone oil is as shown in the following formula (I), and the crosslinkable flame-retardant fluorine-containing silicone oil has good flame retardancy.

The invention provides an alcohol acid phase-inverted emulsion coating. The alcohol acid phase-inverted emulsion coating comprises the following components in parts by weight: 60-70 parts of alcohol acid phase-inverted emulsion, 10-20 parts of pigment filler, 1-1.5 parts of a rheological agent, 0.05-0.1 part of a defoamer, 0.5-1 part of an oil-based drier and 10-25 parts of deionized water. The alcohol acid phase-inverted emulsion coating has an extremely low VOC value and is good in chemical resistance, waterproofness and salt fog resistance and wide in application range.

The invention discloses a preparation method of alkyd resin emulsion, which comprises the following steps: S1, synthesis of alkyd resin: adding unsaturated fatty acid, a polyhydroxy compound, acid anhydride and an esterification catalyst into a reaction kettle, heating to a preset temperature for reaction, cooling when the acid value is lower than a set value, adding vinyl silicone oil and an oily initiator, and reacting for preset time; and S2, preparation of alkyd resin emulsion: cooling the reaction system obtained in the step S1, adding the modified epoxy emulsifier, cucurbituril and organic amine, continuously stirring, adding water, uniformly dispersing, and discharging to obtain the alkyd resin emulsion. In the synthesis process of the alkyd resin, vinyl silicone oil is used for modifying the alkyd resin, and a polysiloxane chain segment with high weather resistance and low surface energy is introduced, so that the alkyd resin has excellent weather resistance, stain resistance and salt spray resistance of organic silicon resin.

The invention discloses a primer-topcoat polyurethane protective coating, and belongs to the technical field of paint coatings. According to the product, the modified hydroxyl acrylic resin is used asmatrix resin, and through specific modification components, the prepared coating product not only has super-strong adhesive force and can be applied to coating of bottom plates with low surface treatment degree, such as steel plates and aluminum plates, but also has excellent high resistance and quick-drying property and can be effectively applied to various climates and environments; through cooperation of activated siloxane modified nano mica powder, ultrafine talcum powder, ultrafine barium sulfate and other granular materials, the prepared urethane protective paint also has good wear resistance. The invention also discloses a preparation method of the primer-topcoat polyurethane protective paint, and the preparation method has simple operation steps and can be used for industrial large-scale production. The invention also discloses application of the primer-topcoat polyurethane protective paint as a low surface treatment plate paint.

The invention belongs to the technical field of wires and cables and particularly relates to an anti-nuclear electromagnetic multi-core pulse direct-current cable which comprises conductors, insulators, a central filling core, a shielding layer and a sheath, the insulators wrap the conductors to serve as current-carrying wire cores, the multiple current-carrying wire cores are closely arranged andstranded outside the central filling core to form a cable with a multilayer structure, the cable is wrapped by the shielding layer, and the shielding layer is wrapped by the sheath, the current-carrying wire cores are divided into positive wire cores A and negative wire cores B, the positive wire cores A and the negative wire cores B on the same layer are alternately arranged, and adjacent positive wire core A and negative wire core B on the same layer form a group of loops; or all the positive wire cores A and the negative wire cores B in the cable are crossed and connected in parallel to form a loop. By optimizing the arrangement of the current-carrying wire cores, stray electromagnetic fields in any axial direction can be reduced or counteracted, the high-current power transmission quality is ensured, and the electric corrosion to equipment around the cable is reduced.

The invention discloses a manufacturing method of a crystal key. The manufacturing method comprises the following steps: raw material forming: manufacturing a crystal raw material into a required shape; structural design: arranging a plurality of refracting surfaces on the back face of a key; film plating: shielding the front face of the key, and carrying out vacuum film plating on the back face of the key by using an evaporation coating technology, wherein the film thickness is 0.3-1 micrometer; primer spraying: spraying a paint on the back face of the key, wherein the paint thickness is 10-20 microns; laser etching: carrying out laser etching on marks on the key; and top coat spraying: spraying a paint on the back face of the key again, wherein the paint thickness ranges from 10 micrometers to 20 micrometers. According to the invention, a plurality of refraction faces are made on the back face of the key to achieve refraction and reflection effects, so that the whole key is in a mirror face effect when seen from the front face; and through combination of a vacuum coating process and a paint spraying process, the key has the performance of salt mist resistance, high and low temperature resistance, good paint film adhesive force and the like, and the crystal key meets the industrial black or gray color tone requirement. The invention further relates to the crystal key manufactured according to the manufacturing method of the crystal key.