52results about How to "Good resistance to salt spray corrosion" patented technology

The invention discloses a preparation method for magnetron sputtering a TiMo film on a titanium alloy surface, which is characterized in that the preparation method comprises the steps of pre-sputtering treatment, substrate installation, sputtering and film forming, etc. Compared with the prior art, the invention realizes the purpose of preparing a Ti-Mo film on a titanium alloy surface by the magnetron sputtering process; a film with a thickness of 1-50 microns can be obtained by controlling the process conditions, and the film has good compactness, good bonding force with the substrate, anda controllable thickness; and a film with a uniform thickness can be obtained on a large-area substrate. The coating prepared by the invention has excellent resistance to salt spray corrosion even ata temperature of 600 DEG C, and the used preparation method can produce high-quality products with the guarantee of batch production.

The invention discloses a metal pre-treatment method of the metal-glass sealing technology. The method is to first conduct surface electroplating treatment on the Kovar alloy to be glass sealed, and then electroplate the Kovar gold lead wire and The bottom plate and the glass blank are mounted together, and the glass is melted and sealed at high temperature. In the present invention, the electroplating process is used to replace the traditional pre-oxidation process in the pre-treatment of the metal. The sealing parts obtained in this way are not only beautiful in appearance, but also have better air tightness, less air bubbles on the surface and inside of the glass insulator, and high bonding strength between the glass and the lead wire. And the number of bending is more, the bonding strength is higher than that of the traditional pre-oxidized sealing parts, and the product consistency is better. The components after electroplating have strong salt spray corrosion resistance, which meets the requirements of use and can be widely used in metal packaging, relays , connectors, solar vacuum heat collectors and other fields.

The invention specifically relates to the field of floors and particularly relates to a construction process of a high-durability epoxy floor. The construction process of the high-durability epoxy floor at least comprises the following steps: (1) treating a base layer; (2) laying a primer layer; (3) laying a first glass fiber layer; (4) laying a first epoxy mortar layer; (5) laying a second glassfiber layer; (6) laying a second epoxy mortar layer; (7) laying a third glass fiber layer; (8) laying a finishing coating layer; (9) cleaning and drying the finishing coating layer, so as to obtain the high-durability epoxy floor.

The invention discloses a high-strength wear-resistant modified natural rubber. The rubber comprises, by weight, 60-70 parts of natural rubber, 15-20 parts of ethylene propylene diene monomer, 6-9 parts of butadiene rubber, 8-10 parts of a reinforcing agent, 2.5-3.5 parts of epoxy resin, 2-3 parts of a silane coupling agent, 1-2 parts of an accelerant, 1-2 parts of an anti-aging agent, 0.3-0.5 part of an emulsifier and 4.5-5 parts of a plasticizer. The rubber shows good mechanical strength at a high temperature and a low temperature, and also has excellent wear resistance and good sunlight andultraviolet aging resistance and weather resistance. In addition, the rubber also has good salt spray corrosion resistance, excellent flame retardance, good comprehensive performances and long service life, and can meet the use requirements of various fields, such as aviation products, windscreen wipers for automobiles, sealing strips, sealing rings and the like.

The invention relates to a high-strength multi-element zinc base alloy coated steel wire for a bridge cable. The steel wire is characterized in that hypereutectoid steel wire rods with the carbon content of 0.82% above are drawn to form bright steel wires with the strength of 2000 MPa above, and then the bright steel wires are hot-galvanized to form hot-galvanized aluminum alloy steel wires; the coating comprises Zn-Al alloy, and one or more of trace rare earth, trace nickel elements and magnesium elements are added selectively. The hot-dipping technology comprises two steps of hot dipping ofzinc base alloy solutions and hot galvanizing of aluminum alloy solutions, and one or more of the trace rare earth, the trace nickel elements and trace aluminum elements are added to the hot-dip zincbase alloy solutions. According to the steel wire, the thickness of the hot-dip zinc base alloy solution coating can be reduced obviously, and the adhesion strength of the coating and the appearance quality are improved; and the strength, toughness and corrosion resistance of the steel wire coated with the hot-galvanizing aluminum alloy solutions are all improved obviously.

The invention relates to martensite stainless steel and a preparation method thereof and belongs to the technical field of ferrous metallurgy. The problems to be solved are that martensite stainless steel is poor in corrosion resisting performance, and precious metal molybdenum and tungsten need to be added for improving the corrosion resisting performance of the martensite stainless steel in theprior art. According to the technical scheme, the martensite stainless steel comprises chemical components including, by weight, 0.03%-0.25% of C, smaller than or equal to 1.0% of Si, 0.1%-2.0% of Mn,smaller than or equal to 0.035% of P, smaller than or equal to 0.020% of S, smaller than or equal to 1.5% of Ni, 11.5%-15.0% of Cr, 0.05%-2.0% of Cu, 0.05%-0.6% of V, smaller than or equal to 0.03% of Al, 0.002%-0.05% of N and the balance Fe. The martensite stainless steel has excellent comprehensive mechanical performance and good salt-spray corrosion resisting performance, and is very suitablefor being used in parts of industry like home appliances with the high requirement for corrosion resisting performance.

The invention provides a preparation method of an environment-friendly self-healing type titanium/zirconium/molybdenum conversion film on the surface of aluminum alloy. The preparation method comprises the following steps that surface pretreatment is conducted on each aluminum alloy sample; a conversion solution is compounded, wherein the conversion solution comprises 0.5-5 g/L of fluotitanate, 0.5-3 g/L of fluozirconate, 1-6 g/L of molybdate, 0.2-3 g/L of a chelating agent, 0.3-3 g/L of a film formation additive and 0.2-0.5 g/L of a pH value adjustment agent, water is added after all components are mixed, stirring is conducted for 30-50 minutes, then, sealing is conducted, and aging is conducted for one day; the conversion film is prepared, wherein each aluminum alloy sample is soaked inthe conversion solution, the continuous and uniform faint-yellow titanium/zirconium/molybdenum conversion film can be formed on the surface of the aluminum alloy, the aluminum alloy samples are takenout and thoroughly cleaned through distilled water, and drying is conducted, so that preparation of the conversion film is completed. By means of the preparation method, the film formation temperatureis low, the film formation time is short, the conversion solution is stable, no chromium is adopted, and environmental friendliness is achieved; the surface of the aluminum alloy is good in corrosionresistance and capable of achieving self-healing; and the preparation method is applicable to various types of aluminum alloy.

The invention discloses an anti-corrosive coating for a cement concrete crash-resisting wall. The anti-corrosive coating is prepared from the following raw materials: hydroxylated acrylic resin, epoxyresin, lauryl alcohol polyoxyethylene, mullite, polypropylene glycerol ether, polyimide, polymethylphenylsiloxane, a thickening agent, ethylene bisstearamide, ethoxylated aliphatic alkylamine, a silane coupling agent, propylene glycol monomethyl ether and calcium aluminum borosilicate. The invention also discloses the preparation method of the anti-corrosive coating for the cement concrete crash-resisting wall. The coating prepared by the preparation method disclosed by the invention has the advantages of good adhesion, capability of being well attached to the surface of the cement concrete crash-resisting wall, low possibility of peeling off, excellent alkali resistance, acid resistance and salt spray corrosion resistance; the anti-corrosion performance of the cement concrete crash-resisting wall is greatly improved and the service life of the cement concrete crash-resisting wall is prolonged.

The invention discloses a waterborne epoxy soybean oil modified epoxy-ester anticorrosive paint and its preparation method. The paint is prepared by 1), preparing 45% of waterborne epoxy soybean oil modified epoxy-ester resin; 2), preparing resin-free mill the raw material comprises deionized water, wetting agent, dispersing agent, antifoaming agent 1, strontium yellow, imported zinc phosphate, carbon black, precipitated barium sulphate and waterborne bentonite; 3), paint mixing: the resin-free mill base, 45% of waterborne epoxy soybean oil modified epoxy-ester resin, drier, antifoamingagent 2, dimethylethanolamine, and thickening agent are mixed to obtain the waterborne epoxy soybean oil modified epoxy-ester anticorrosive paint. The product is excellent in salt-spray corrosion resistance, and can meet the use of an axle under the high salt-spray corrosion resistance environment; the product is good in dryness and can meet the requirement of the existing axle coating line; the thickness of a dry film of a primary film is up to 60 mu m, and the product is free from sagging and good in construction property; the paint is short in coating cycle, low in VOC emission, and is safeand environment-friendly waterborne heavy anti-corrosive paint.

The invention relates to the field of high polymer materials, in particular to a marine high-strength tear-resistant rubber material and a preparation method thereof, wherein the rubber material includes the following components: natural rubber, epoxidized natural rubber, aminated solution polymerized styrene-butadiene rubber, liquid polyisoprene rubber, epoxidized butadiene rubber, a coupling agent modified one-dimensional carbon nanomaterial, white carbon black, carbon black, zinc oxide and an auxiliary agent. The prepared rubber material has the advantages of favorable mechanical properties, high tensile strength, high tear strength, favorable salt spray corrosion resistance and lower density, and is suitable for manufacturing marine rubber parts.

The invention provides a rust-proof emulsion for a spring and a preparation method thereof. The rust-proof emulsion is prepared from methyl methacrylate, butyl acrylate, a phosphate monomer, an epoxyacrylate monomer, an emulsifying agent and deionized water. The preparation method comprises the following steps: a) preparing the phosphate monomer; b) preparing the epoxy acrylate monomer; c) preparing a pre-emulsion; d) preparing a polymer emulsion. The invention discloses the rust-proof emulsion for the spring and the preparation method thereof. The rust-proof emulsion is prepared by using a pre-emulsification process and a semi-continuous seed polymerization method, the obtained rust-proof emulsion not only has an excellent salt-spray corrosion resistance, but also is recyclable, and waste liquid cannot be generated to pollute the environment.

The invention belongs to the technical field of friction plates for vehicles and particularly relates to a weather-resistant high-metal friction plate for a military vehicle and a preparation method thereof. The weather-resistant high-metal friction plate for the military vehicle comprises raw materials including the following components of, by weight, 10-40% of iron-chromium-aluminum fibers, 7-30% of metal fibers, 7-21% of non-metal fibers, 5-15% of artificial graphene, 5-8% of resin, 2-5% of rubber and the balance calcium carbonate. The raw materials are weighed and mixed according to the designed ratio of all the components, the raw materials are subjected to hot-press forming, solidified and machined, and thus the weather-resistant high-metal friction plate is obtained. The weather-resistant high-metal friction plate is suitable for various harsh climates and environments and good in high-low temperature resistance and corrosion resistance, has the characteristics of high and stable friction coefficient and rapid and safe emergency braking, and is a high-performance special brake pad special for the military vehicle.

The invention belongs to the technical field of conductive coatings, and particularly relates to a modified silver powder conductive coating and a preparation method thereof. The method is consideredfrom a brand-new perspective; the surface of silver powder is modified, organic matters are grafted on the surface of the silver powder, and the organic matters on the surface of the silver powder caneffectively improve the interface characteristics between the silver powder and resin; the number of micropores and gaps in the conductive coating is reduced; corrosive substances such as water vaporare better prevented from entering a coating layer of the conductive coating; the silver powder is prevented from easily generating electrochemical corrosion with a metal substrate due to high conductivity of the silver powder; especially in the coastal environment with high humidity and high salt concentration, the problem of failure of the conductive coating is solved, longer service life of the conductive coating on a metal substrate is ensured, the conductive coating has good salt mist corrosion resistance in a system formed by the conductive coating and tinplate, and the service life ofthe conductive coating is greatly prolonged.

The invention discloses a preparation method of a salt-fog-corrosion-resistant silane coupling agent, belonging to the technical field of silane coupling agents. The method comprises the following steps: stirring trimethylolethane, triethylamine and dichloromethane, dropwisely adding a mixed solution formed by uniformly mixing alpha-bromoisobutyryl bromine and dichloromethane, carrying out reaction in a dark place, oscillating, standing to stratify, carrying out rotary evaporation concentration on the organic layer, carrying out freeze-drying lyophilization, putting the product, cuprous chloride and 2,2'-dipyridine into a reaction kettle, adding styrene, butyl methacrylate, a silane coupling agent and the like, stirring to react, and finally, dropwisely adding methanol to precipitate the high polymers in the reaction kettle, thereby obtaining the salt-fog-corrosion-resistant silane coupling agent. The self-made high-molecular initiator reacts with the conventional silane coupling agent to obtain the high-molecular silane coupling agent. The high-molecular silane coupling agent can form a thick protective layer on the metal surface, and has favorable shielding properties for the metal material surface. The example proves that the obtained silane coupling agent can not produce white rust after a long-time salt fog test.

The invention discloses a chromium-free passivation treatment process for an aluminum alloy surface and relates to the technical field of aluminum alloys. The chromium-free passivation treatment process for the aluminum alloy surface comprises the following steps: (1) grinding; (2) tannic acid solution treatment; (3) femtosecond laser processing; (4) passivation. According to the method, a uniformand compact passivation film is formed on the surface of the aluminum alloy through passivation, and after neutral salt fog treatment, the passivation film has excellent salt fog corrosion resistanceand can better protect the aluminum alloy; and the contact angle of the surface of the passivation film formed by the method is greatly increased, so that the hydrophobic property of the surface of the aluminum alloy after passivation treatment by the process is obviously improved.

The invention relates to the field of composite materials, and provides a salt-spray corrosion resistant electromagnetic shielding composite material and a preparation method of the salt-spray corrosion resistant electromagnetic shielding composite material. The electromagnetic shielding composite material mainly comprises raw rubber, conductive carbon black, expanded graphite and chopped carbon fibers, and the salt-spray corrosion resistant electromagnetic shielding composite material is finally subjected to vulcanization molding by using the mixing way of a double-roller open mill. The salt-spray corrosion resistant electromagnetic shielding composite material has high electromagnetic shielding effectiveness and salt-spray corrosion resistance, and excellent comprehensive performances, is very suitable for being applied as a shielding material in the field of marine environments with higher requirements on the salt-spray corrosion resistance and shielding performances, and further has good market prospects.

The invention provides an earphone earplug, which comprises an earplug body, the earplug body is an antibacterial silica gel earplug, the antibacterial silica gel earplug is made of antibacterial silica gel, the antibacterial silica gel comprises an antibacterial agent finished product, the antibacterial silica gel comprises 0.04 wt%-6wt% of the antibacterial agent finished product, the antibacterial agent finished product comprises a nano antibacterial agent and a porous antibacterial agent carrier, and the antibacterial silica gel comprises 0.03 wt%-1.8 wt% of the nano antibacterial agent in percentage by weight; the antibacterial agent finished product contains the porous antibacterial agent carrier which has an ultrahigh specific surface area, so that the dispersion of effective components of the antibacterial agent is facilitated, the surface contact property of the antibacterial agent is greatly improved, the utilization rate of the inner surface of the antibacterial agent is improved, and the adding proportion of the antibacterial agent is greatly reduced; the addition amount of the antibacterial agent is low, the problem that the original performance of the silica gel can be influenced by the addition amount of the antibacterial agent with a high proportion is solved, and bad hidden dangers such as the mechanical performance and the wearing skin-friendly comfort of the antibacterial earplug are avoided.