44results about How to "Improve anti-corrosion function" patented technology

The invention discloses an underwater epoxy resin coating and a preparation method thereof. The underwater epoxy resin coating consists of a component A and a component B, wherein the component A is a composition of liquid epoxy resin, polymer hollow microspheres, white carbon black, pigment and filler; the component B is a compound curing agent blended by hydrophilic amine curing agent and oleophilic curing agent; in the component A, the mass ratio of the liquid epoxy resin to the polymer hollow microspheres to the white carbon black to the pigment and filler is 60-70: 0.05-0.1: 2-6: 30-40, and the mass sum of the components is 100; and in the component B, the mass ratio of the hydrophilic amine curing agent to the oleophilic curing agent is 1: 3-4. The mass ratio of the component A to the component B is 1: 0.25-0.35. The coating has excellent adhesive force on wet surface of underwater metallic structure and nonmetallic structure materials; the coating has good leveling property, good film formation property and smooth coating, and can form a thick film at one time; and the formed film has good protection effect on the surface of the coated material.

The invention discloses a polycarboxylate superplasticizer with super high early strength and a preparation method of the polycarboxylate superplasticizer. The polycarboxylate superplasticizer is prepared as follows: amine polyoxyethylene ether, acrylic acid, maleic hydroxy acid ester and allyl amine are taken as monomers and added with an inorganic peroxide initiator for free radical copolymerization, main chains of molecules of the superplasticizer contain carboxylic acid groups, sulfonic acid groups and amino groups simultaneously, side chains adopt long-chain polyamine ether, and the ratio of polyoxyethylene ether to acrylic acid to water to maleic hydroxy acid ester to allyl amine to the inorganic peroxide initiator in parts by mass is 100:(20-30):(100-150):(2-10):(2-10):(0.1-0.5). The invention further provides the preparation method of the polycarboxylate superplasticizer. The polycarboxylate superplasticizer with super high early strength has the advantages of short setting time, high early strength, good adaptability, extremely low chlorine ion content and capability of improvement of the concrete durability; meanwhile, the production process is simple, low in cost, environment-friendly and pollution-free, and mass production can be realized.

The invention relates to a method for forming self-assembly inhibitory film on surface of a copper electrode, belonging to the corrosion prevention technology of nonferrous metals; the method comprises the following steps: adopting analytical purity ammonium pyrrolidine dithiocarbamate (APDTC) to prepare 0.001-0.01mol/L of APDTC water solution, and immersing a pretreated copper electrode in the solution at 20-30 DEG C for 0.5-8h to absorb a layer of APDTC self-assembly inhibitory film on the surface of the copper electrode. Alternating current impedance test results show that the inhibition efficiency of the copper electrode which is treated through self-assembly in 0.01mol/L of APDTC water solution for 4-8h, in 0.5mol/L of HCl solution can reach above 95%.

The invention relates to a preparation technology of a self-repairing and anti-corrosion coating, and belongs to the technical field of high polymer materials and anti-corrosion coatings. The preparation method comprises the following steps: step 1, mixing an aqueous phase containing an emulsifier with an oil phase containing an alkene polymer monomer, a repairing agent, an initiator and an organic solvent to form an oil-in-water O/W type emulsion, and carrying out irradiation crosslinking or thermal crosslinking to form a microcapsule shell; step 2, dropwise adding aniline into the dispersionliquid of the microcapsule shell obtained in the step 1, adding an aqueous solution containing an aniline initiator, and performing a reaction to obtain a polyaniline microcapsule; and step 3, mixingthe polyaniline microcapsules with the matrix resin to obtain the self-repairing and anti-corrosion coating.

The invention discloses an environment-friendly rust-proof water-based cutting fluid, comprising the following components in parts by weight: 10-25 parts of alkylol amine or alkylol amine salt, 5-10 parts of silicate, 15-30 parts of sodium borate, 8-20 parts of sodium tungstate, 25-50 parts of boracic acid, 5-15 parts of sodium gluconate, 30-60 parts of a lubricating agent, 3-10 parts of a defoaming agent, 3-8 parts of a sterilizing agent, 3-6 parts of a pH modifier and 50-85 parts of water. The environment-friendly rust-proof water-based cutting fluid disclosed by the invention has cooling, cleaning and lubricating functions, and is environmentally friendly, long in service life, excellent in anti-corrosion performance and strong in stability.

The invention relates to the technical field of skin care beauty cosmetics, and in particular relates to a pure fruit-water, herbal medicine and vinegar skin-beautifying spray and a preparation method thereof. An innovative technical formula is adopted and is characterized by comprising pure fruit water, herbal medicine essence and vinegar, wherein the pure fruit water is given preference and includes apple water, lemon water, grape water and kiwi water; the pure herbal medicine essence includes a licorice root extract, a scutellaria root extract and a phyllanthus emblica Extract; vinegar is the fresh and edible fruit vinegar and includes apple vinegar and lemon vinegar. Compared with the prior art, the preparation method provided by the invention has the advantages and unique characteristics that 'water' serving as the major component in the formula is 100% natural fruit water, which is used in match with the pure herbal medicine essence and fresh fruit vinegar, thus the spray is fully functional. The spray has the effects of long-lasting hydrating, instantaneously repairing, compacting and smoothening, dispelling sallow complexion and whitening, and removing oil and cleaning and refreshing, and is a pure, natural, high-safety and multi-effect skin-beautifying spray.

The invention relates to a silencer applied to the field of silencing and noise reduction for internal combustion engines, in particular to a complex silencer for a diesel generator unit. The complex silencer for a diesel generator unit comprises an intake tube, a dissipative silencing structure connected with the intake tube in series, a resistant silencing structure arranged inside the dissipative silencing structure, and a gas outlet tube connected with the dissipative silencing structure in series, wherein three expansion chambers are formed by a resonance perforated plate, a first-level resistant baffle and a second-level resistant baffle together, and are arranged in the direction from the intake tube to the gas outlet tube in the order of the first expansion chamber, the second expansion chamber and the third expansion chamber. Because the dissipative silencing structure and the resistant silencing structure are connected in series for use, the range of the silencing frequency band is broader; and making use of different expansion ratios, the passing frequency of exhaust flow is increased, the peak value of silencing of the silencer can be large, and the silencing capacity can be increased. The complex silencer for a diesel generator unit has the advantages of being broad in silencing frequency band, small in volume, simple in structure, low in transmission loss and light in integral weight. Meanwhile, the effect of improving the anticorrosion function is achieved by using metal tubes and metal plates.

The invention discloses a novel multi-effect outer wall air inlet pipe comprising a pipe body, a positioning flange and a seal ring. A telescopic flexible hose is arranged between the pipe body and the positioning flange. The inner pipe wall of the pipe body is a reducing pipe wall. Multiple silencing holes are evenly distributed in the inner wall pipe and are filled with silencing cotton. A grating piece is arranged at an air inlet. The rear end of the grating piece is connected with the air inlet in a threaded manner. Three to five inclined blades are arranged at the front end of the grating piece. A first roughening ring and a second roughening ring are arranged on the outer surface of the pipe body. A protection layer is arranged on the outer wall of the pipe body and comprises a nanometer anti-corrosion coating, a heat preservation layer and an anti-corrosion waterproof coating. By means of the novel multi-effect outer wall air inlet pipe, noise generated when air enters the pipe body can be reduced; the protection layer is arranged, the corrosion prevention function, the heat preservation function and the waterproof function of the outer wall of the pipe body are improved, the effects of slowing down aging of the outer wall of the pipe body and reducing rainwater invasion are achieved, and the service life of the air inlet pipe can be prolonged; and backward pouring of rainwater or invasion of mosquitoes can be prevented, accumulation of foreign matter in the pipe body can be avoided, and maintenance of the interior of the pipe body in the later period can be reduced.

The invention discloses high-performance quenching oil, and belongs to the field of quenching cooling media. An oil-based quenching oil raw material for preparing the high-performance quenching oil isinfluenced by a benzene ring substituent group and the carbon atom number, a straight chain structure of the oil-based quenching oil raw material is low in pour point and better in thermal stability,and the lubricating performance and the dispersing performance of an oil base are improved on account of an introduced polar benzene ring; a cooling adjusting additive used for preparing the high-performance quenching oil is used for decreasing the low-temperature cooling speed of water and reducing deforming and cracking of a workpiece, when the temperature is lowered to a turbidity point or below, the cooling adjusting additive which is separated out is dissolved into the water again, the temperature condition in the quenching process is achieved, and damage of overheating to the workpieceis prevented; and through a flash point adjusting active agent for preparing the high-performance quenching oil, the viscosity of the oil base is adjusted, the condition that the quenching oil loses the efficacy due to the fact that gel is formed is prevented, the heat resistance of the oil base is improved, therefore, the flash point and the ignition point are increased, and the using performanceof the quenching oil is improved. According to the high-performance quenching oil, the problems that existing quenching oil is poor in cooing performance and low in flash point are solved.

The invention relates to wear-resistant melamine impregnated paper, a preparation method and application thereof. The wear-resistant melamine impregnated paper comprises a polyurethane primer layer, amelamine resin layer containing a wear-resistant agent and printing paper subjected to melamine resin impregnation treatment from top to bottom, wherein the polyurethane primer layer is prepared fromthe following raw materials in parts by weight: 70-90 parts of a water-based resin, 0.5-1 part of a defoaming agent, 20-30 parts of water, 2-3 parts of an alkali swelling rheological aid, 0.5-1 partof an antiseptic bactericide and 0.2-0.4 part of a demolding agent. According to the invention, in a bonding process of wear-resistant melamine impregnated paper and a base material, a polyurethane primer is directly coated without polishing, so that labor cost is saved, and production efficiency is improved; and the polyurethane resin can improve the adhesive force between the polyurethane primerlayer and the base material and the melamine resin layer containing the wear-resistant agent, the surface of the melamine resin layer containing the wear-resistant agent contains a large amount of exposed aluminum oxide, and the exposed wear-resistant agent is covered after the polyurethane resin is sprayed, so that the wear-resistant agent is prevented from making contact with a steel plate in the subsequent hot pressing procedure.

The invention discloses an oil transportation pipeline with a corrosion-prevention function. The oil transportation pipeline comprises an inner pipeline body and an outer pipeline body arranged outside the inner pipeline body in a sleeving mode. A thermal insulation layer and a corrosion prevention layer are sequentially arranged between the inner pipeline body and the outer pipeline body from inside to outside, a plurality of thermal insulation pipes are arranged in the thermal insulation layer, the positions outside the thermal insulation pipes in the thermal insulation layer are filled withthermal insulation rock wool, and jagged partition plates are arranged in the thermal insulation pipes; and each partition plate divides the corresponding thermal insulation pipe into two cavities, the interior of the cavity which is close to the inner pipeline body is filled with foam, the interior of the cavity which is far away from the inner pipeline body is filled with a drying agent, and aplurality of flow guiding rings are sequentially arranged on the outer wall above the outer pipeline body. According to the oil transportation pipeline with the corrosion-prevention function, throughthe special structure, the pipeline has good thermal insulation performance, oil plugging can be avoided, the convenience of oil transportation is improved, an asphalt layer of the pipeline is omitted, a light thermal insulation material is adopted, the mass is greatly lowered, the burden of the pipeline is reduced, the stability of the oil pipeline structure is enhanced, a corrosion prevention layer is arranged, and therefore the corrosion prevention performance of the pipeline is greatly improved.

The invention discloses a surface anticorrosion treatment technology of a carbon steel valve body for a petroleum pipeline. The technology concretely comprises the steps of valve body oil removal, pickling, pure water cleaning, chemical nickel plating, pure water cleaning, heating treatment, polishing, examination, packaging and warehousing. The above mode is carried out, a reasonable raw material ratio is adopted, and chemical nickel plating of the carbon steel valve body is carried out, so the anticorrosion function of the surface of the valve body is improved above 10 times, the service life of a valve is greatly prolonged, and the subsequent unkeeping and maintaining cost of the valve body is obviously reduced.

The invention discloses nanofiber reinforced heavy anticorrosion coating and a preparation method thereof. The nanofiber reinforced heavy anticorrosion coating comprises epoxy resin, fiber, nanometerzinc powder, a curing agent, vinyl acetate and 650 low molecular polyamide. The preparation method comprises the following steps: preparing fiber mesh fabric, impregnating, and coating with epoxy resin coating. The invention has the beneficial effects as follows: a layer of fiber mesh fabric is added into the epoxy resin coating, and the nanometer zinc powder in fiber can increase the anticorrosion function of the coating itself; ethylenediamine impregnated into the fiber mesh fabric can quickly cure the epoxy resin to form a spatial network structure which can coat the fiber therein, so thatthe fiber mesh fabric and the epoxy resin are firmly combined; the 650 low molecular polyamide coating the fiber mesh fabric can slowly react with the epoxy resin on both sides of the fiber mesh fabric, so that the toughness of the epoxy resin around the fiber mesh fabric is improved, a defect of easy stress concentration on an interface between the fiber mesh fabric and the epoxy resin is eliminated, and the stability of overall mechanical properties of the coating is maintained.

The invention discloses a metallurgy technology and particularly discloses an iron-based ceramic powder metallurgy and a preparing method and process thereof. The iron-based ceramic powder is prepared by the steps as follows: 1, mixing iron powder with TiN, Al2O3, CrO2 and SiC according to a certain ratio, ball-milling to 3-10 microns and fully uniformly mixing; 2, adding a resin adhesive according to a certain ratio and uniformly stirring and mixing; 3, pressing and molding by an oil press; 4, sintering to 200-1250 DEG C and sintering in a temperature zone mode; 5, polishing: placing a sintered part into a roll or a vibration rotary polisher for polishing by about 2 hours. According to the iron-based ceramic powder metallurgy and the preparing method and process thereof, the preparing method is characterized in that the iron powder is taken as a base material and ceramic powder materials are added for mixing, pressing and sintering to prepare the part, the defects of a powder metallurgy part are mainly solved, the anti-corrosion and anti-rusting functions are enhanced, the hardness of the base body is improved and the high temperature resistance and grinding resistance are improved.