30results about How to "No corrosive effect" patented technology

The invention discloses a physical polyethylene foaming material and making method, which comprises the following steps: adopting low-density polyethylene and high-density polyethylene as raw material; adding foamer and adjuvant; blending in the single-screw/double-squeezer to grain; obtaining the product.

The method for low temperature brazed aluminum alloy to obtain brazed joint with high temperature use performance includes the following steps: 1. setting the brazing alloy inside the brazed gap; 2. primary brazing; and 3. ultrasonic treatment. The said brazing process has no any etching on the aluminum alloy workpiece, short brazing period, low brazing temperature, low operation cost, and capacity of obtaining brazed joint with high strength and high temperature use performance.

The invention discloses a real-time monitoring and active fire extinguishing method and device. The device mainly comprises a TMS (Temperature Management System) series wireless temperature on-line monitoring system and fire extinguishing mobile trolleys; the TMS series wireless temperature on-line monitoring system comprises temperature sensors, a collector, a data storage device and a CPU, wherein the temperature sensors are distributed at various parts of an airplane for collecting the temperature information of the airplane and provide position information through the distribution positions, the CPU analyzes fire disasters and fire risks, and a wireless transmission module transmits signals to the fire extinguishing mobile trolleys when the fire disasters and the fire risks exist; wireless receivers in the fire extinguishing mobile trolleys receive the information, the fire extinguishing mobile trolleys move to the positions and further accurately determine the positions of the fire disasters and the fire risks, telescopic arms of the fire extinguishing mobile trolleys are adjusted so that spraying heads can spray ultrafine water mist towards the positions with the fire disasters and the fire risks for fire extinguishment, the fire extinguishing mobile trolleys return to the initial positions after the fire disasters and the fire risks are eliminated, and then the fire extinguishment task is completed. The TMS series wireless temperature on-line monitoring system continues monitoring the temperature of various parts of an airplane compartment in real time.

The invention discloses a cabin environment control device of an offshore wind generating set. The device comprises a cooling system, a dehumidification system, a first sealing structure and a second sealing structure. The cooling system is arranged inside or outside a cabin to adjust the temperature of air in the cabin. The dehumidification system is arranged in the cabin to adjust the humidity of the air in the cabin. The first sealing structure is arranged in a gap between the cabin and a tower drum. The second sealing structure is arranged in a gap between the cabin and a wind wheel. According to the cabin environment control device of the offshore wind generating set, cabin parts of the offshore wind generating set can be prevented from being corroded well.

A high temperature resistant anti-corrosion Al-Zn alloy coated steel sheet and a preparation method thereof belong to the technical field of coating steel sheets. The steel sheet comprises a baseplate, a first structural layer combined with one side surface of the baseplate, a second structural layer combined with the other side surface of the baseplate, and a passivation layer combined with the surface of the first structural layer, and is characterized in that the surface of the passivation layer is combined with a high temperature resistant anti-corrosion layer. The preparation method comprises the following steps: selecting a cold-roll steel sheet with a flawless surface, cleaning and drying the surface of the cold-roll steel sheet to obtain the baseplate; coating structural layer material on one side surface of the baseplate to form the first structural layer, while coating the structural layer material on the other side surface of the baseplate to form the second structural layer; performing passivation and drying treatment to the surface of the first structural layer by adopting a passivator; coating high temperature resistant anti-corrosion paint on the surface of the passivation layer by adopting a roller painting manner, and performing calcination and solidification to obtain a finished product. According to the invention, the high temperature resistant anti-corrosion Al-Zn alloy coated steel sheet cannot be eroded while being continuously used for a long time in a high-temperature environment, and cracking, fracture and the like are avoided.

The invention relates to a 1,1,1,3,3-pentafluoropropane (HFC-234fa) refining method. In the method, treatment by activated carbon adsorbent treated by an acid and/alkali is performed to effectively remove unsaturated impurities such as 1-chloro-3,3,3-trifluoropropene (R1233zd), 1-chloro-3,3,3-tetrafluoropropene (R1224zd) and 2-chloro-3,3,3-tetrafluoropropene (R1224xe) in the crude product of HFC-245 fa. The HFC-245fa refining method has the advantages of readily available raw materials, low cost, non-toxicity, environmental friendliness, simple treatment method and the like. The product HFC-245 fa is mainly used to replace HCFC-141b in polyurethane foaming.

The invention discloses an antifogging and antifreezing agent for automotive glass. The antifogging and antifreezing agent is prepared by the steps of sequentially adding water, an antifreezing agent, an antifogging agent, sulphur sodium succinate and alkyl glycoside to a stirrer and stirring until the raw materials are completely dissolved; adding sulfamic acid, zinc oxide, an antistatic agent, a dispersing agent and sorbic acid, stirring, mixing, dissolving, standing for 1-5min, and filtering; and adding an essence to the obtained filtrate for mixing evenly to obtain the finished product. The antifogging and antifreezing agent for automotive glass is simple in preparation technology; environment-friendly raw materials are adopted; and the antifogging and antifreezing agent has the functions as follows: the surfactants, namely sulphur sodium succinate and alkyl glycoside, play cleaning and decontaminating roles, the composite antifreezing agent and the antifogging agent are used for ensuring that windshield glass is clear, transparent and clear in view; charges on the surface of the glass can be eliminated through the antistatic agent; and an anti-corrosive and antibacterial agent does not have any corrosive effect on various metals, and an automotive topcoat and rubber are absolutely safe.

The invention relates to anticorrosive windshield water. The anticorrosive windshield water is prepared by adopting the following raw materials: 4 to 7 parts of neoprene, 12 to 18 parts of oleyl-alcohol polyoxyethylene, 10 to 24 parts of emulsion polymerized butadiene styrene rubber, 2 to 4 parts of dodecyl diethanolamide, 3 to 4 parts of sodium phosphate, 2.5 to 3.6 parts of sodium xylene sulfonate, 2 to 6 parts of alcohol ether, 3 to 7 parts of nonylphenol polyoxyethylene ether, 5 to 8 parts of sodium diethylhexyl sulfosuccinate, 6 to 10 parts of silicate stabilizer, 3 to 6 parts of borax, 6 to 12 parts of liquid paraffin, 4 to 5 parts of propanediol, 10 to 18 parts of corrosion inhibitor and 5 to 9 parts of surface active agent. The anticorrosive windshield water has beneficial effects of good cleanness, no corrosion for various metals, absolute safety for automotive topcoat and rubber and long service life.

The invention discloses a metal restoration additive for lubricating oil of an engine. The metal restoration additive is characterized by consisting of the following components in percentage by weight: 3 to 5 percent of polyisobutene, 5 to 8 percent of dialkyl dithiophosphate, 4 to 6 percent of phosphite ester, 8 to 10 percent of tert-butyl phenyl phosphate, 5 to 7 percent of alkyl methacrylate copolymer, 3 percent of sulfurized calcium alkyl phenolate, 3 to 5 percent of nanometer copper oxide powder, 2 to 4 percent of nanometer magnesium powder and the balance of base oil. A method is simple and practicable; and the prepared restoration additive for the engine powerfully functions in the restoration of various engines, has low cost and the good effects of wear resistance and fuel saving, can prolong the service life of the engine and a drain period, is safe to use and does not have any corrosion action on the engine.

The invention discloses a nano titanium dioxide photocatalyst. The photocatalyst comprises the following components in parts by weight: 10-20 parts of nano titanium dioxide, 1-3 parts of a dispersingagent, 2-4 parts of nano-silver, 3-6 parts of nano-silica, 3-9 parts of nano zirconia, 4-10 parts of nano-zinc oxide, 12-22 parts of deionized water, 4-10 parts of ferric chloride and 5-12 parts of polyvinylpyrrolidone. The preparation method is simple, the raw material source is wide, and the prepared photocatalyst is excellent in catalytic effect, does not produce corrosion, and is high in oxidizing ability, high in bactericidal ability and long in preservation time.

The invention discloses an antibacterial deodorizing agent for a refrigerator and a preparation method thereof and relates to the technical field of the deodorizing agents. The antibacterial deodorizing agent is prepared from the following raw materials in parts by weight: 24-26 parts of herba lythri salicariae extract, 20-22 parts of honeysuckle flower extract, 13-16 parts of eucalyptus leaves oil, 4-6 parts of lauramidopropyl betaine, 4-6 parts of modified shell powder, 1-2 parts of potassium sorbate, 1-2 parts of humectant, 0.2-0.5 part of preservative, 45-50 parts of porous-type carrier and deionized water. The preparation method comprises the steps of preparing solvent components and the like. The antibacterial deodorizing agent disclosed by the invention is environment-friendly and safe, has no irritation, is fresh in odor, can realize lasting bacteriostasis and has a certain cleaning action.

The invention relates to an engine repairing additive. The engine repairing additive is basically characterized by consisting of the following components in percentage by weight: 3 to 6 percent of polyisobutene, 6 to 8 percent of dialkyl dithiophosphate, 4 to 6 percent of phosphite ester, 10 to 12 percent of tertiary butyl phenyl phosphate, 4 to 5 percent of methacrylic alkyl ester copolymer, 2 percent of thioalkyl calcium powder and the balance of base oil. A preparation method of the engine repairing additive is simple and practical. The prepared engine repairing additive has strong repair effects on various engines. The prepared product has low cost, high efficiency and wear-resistant and fuel oil-saving effects, can prolong the service life of the engine and the fuel oil changing period, is safe to use, and has no corrosion effect on the engine.

The invention relates to a novel axial flow fan for a ship, which comprises a housing, a motor, an impeller, a transmission group, a tire coupler, an anti-explosion ring, an inner interlayer cylinder, water distribution plates, drainage pipes, partition plates and a protecting net, wherein the motor is mounted in the inner interlayer cylinder, and connected with the impeller by the tire coupler and the transmission group; the water distribution plates are mounted on the partition plates at the top of the inner interlayer cylinder; and the anti-explosion ring is made of a brass plate. The axial flow fan is simple in structure, simple to operate, long in service life and high in safety performance, and the motor cannot be subject to corrosion of a sea breeze.

The invention discloses a preparation method of a spirulina antibacterial peptide composite membrane. The preparation method comprises the following steps: carrying out enzymolysis on spirulina powderby neutral protease to obtain spirulina antibacterial peptide, carrying out low-vacuum variable-frequency ultrasonic mixing on the spirulina antibacterial peptide, nano titanium dioxide, sodium alginate and the like, and drying to obtain the spirulina antibacterial peptide composite membrane. The prepared composite membrane is uniform in thickness, smooth in surface, free of obvious bubbles and good in antibacterial property, the tensile property of the composite membrane is greatly improved, and the composite membrane can be used as a packaging material.

The invention relates to a method for preparing pure octadecylamine emulsion. The method comprises the following steps: (1) preparing a hydrotropy system in sufficient stirring, wherein the hydrotropy system comprises a dispersing agent, a cosolvent and a solvent; (2) slowly adding octadecylamine solid into the hydrotropy system in stirring at constant temperature, and additionally adding the solvent to dissolve the octadecylamine solid; (3) stirring for 2 hours at constant temperature, thereby obtaining the stable octadecylamine emulsion. Due to addition of the dispersing agent, the cosolvent and the solvent into the octadecylamine solid, the octadecylamine solid can be converted into a liquid, and the octadecylamine emulsion is relatively high in low-temperature stability and is applicable to maintenance of heat supply equipment in the heat supply stopping process.