278results about How to "Prevent corrosion" patented technology

The invention discloses a kind of heavy-duty zinc-based powder coating and its preparation. The coating is prepared by the following share weight of raw materials through the melt extruderion-mixing or melt-mixing, and the raw materials are as follow: 50-75% of resin and its flow-curing system, 10-40% of zinc flake, 0.1-10% of nanomaterial, 0.1-20% of rust paint, 0-30% of filler, and 0.1-5% of other functional additives.

An ultrasonic capillary welding method for the Al-base composite material includes such steps as arranging upper and lower parts to be welded in such manner that the gap between them is 10-300 microns, putting the flux close to lap end, heating to smelt the flux, holding the temp, pressing the ultrasonic head onto surface of the part to be welded, and applying ultrasonic vibration for 0.5-15 S. Its advantages are high welding quality, low welding temp, and high speed.

The invention provides a sludge composting method, and relates to a sludge treatment method which comprises the steps of preferable accessory selection, CK21 fungus spraying inoculation, heavy metal passivation and powder granulation, and then three-dimensional composite biological organic fertilizer with organic, inorganic and microbial active constituents is obtained. Mushroom compost and pig manure are used as accessories which are easily obtained and degraded, the stacker fermentation time is short, only one time of fermentation is needed, the C/N ratio can be effectively adjusted, and the water content of the sludge is reduced; and the efficient beneficial bio-fungus community CK21 is adopted. The microbial concentration is high, the secretion ability of the enzyme is strong, organic matters can be quickly decomposed so as to prevent the corruption of the organic matters, no odor exists, sludge is used for CK21 inoculation, fermentation starts fast, and the effect is good; and the product is inoculated with the CK21 fungus secondarily so as to further balance and activate nutrients, and the microbial natural reproduction is utilized to realize the is called flower dipping absorbing of the plants to nutrients. The invention has the advantages of optimizing the composting conditions, shortening the composting time, reducing energy consumption of turning, and reducing the damage of the heavy metal on the ecological environment.

The invention relates to an additive used for monocrystalline silicon wafer alkaline flocking and an application method thereof, belonging to the technical field of solar batteries. The additive is prepared by the following components: ethanolamine, polyphosphate, sodium dodecylbenzene sulfonate, sodium hydroxide and water. A flocking agent is prepared through the following steps: (1) dissolving sodium hydroxide in deionized water so as to obtain alkaline flocking liquid; (2) adding the additive motioned above into the alkaline flocking liquid to obtain the flocking agent. During flocking, monocrystalline silicon wafers used for solar batteries are immersed in the flocking agent with temperature controlled to be 75 to 85 DEG C and flocking time controlled to be 15 to 18 minutes. The additive used for monocrystalline silicon wafer alkaline flocking in the invention enables flocking reaction time to be shortened and productivity to be enhanced; prepared texture surface pyramids have a uniform size and low reflectivity; the additive is applicable to solar battery silicon wafer alkaline flocking of different specifications and meets the purpose of industrial production.

The invention discloses a water protection coating for automobile skeletons and automobile and motorcycles wheels, which essentially comprises by weight the following components: acrylic acid modified polyester 20-55 portions, methylated amino resin 4-20 portions, colorant 2.5-30 portions, dispersing agent 1-9 portions, flatting agent 0.2-1 portions, defoaming agent 0.01-0.5 portions, solving assistant 1-5 portions, pure water 10-30 portions, ethyleneglycol monobutyl ether 5-12 portions, and thixotropic agent 1-3 portions. The film of the coating is of excellent weatherability, resistance to salt fog, resistance to acid and alkaline, resistance to water, resistance to scrubbing by solvent, excellent stiffness, high hardness and resistance to scratching, is of excellent protective and decorative role for automobile skeletons and automobile and motorcycles wheels.

The invention relates to a maintaining and energy-saving method for a blowout stand-by boiler, which comprises the following steps: after the boiler steps out, reserving a fire bed; after the boiler is naturally cooled, when the exit temperature of the furnace chamber drops to 100 DEG C or so, the drum pressure is 0.05-0.1 MPa and the water level is kept within the range of drum central line +/-30mm, carrying out maintenance: carrying out water-side maintenance and vapor-side maintenance, and restarting the blowout stand-by boiler every 24 hours, wherein every time the restarting operation is finished, the opening of the fume outlet baffle is controlled at 10%, and the furnace chamber draft is adjusted to the minimum. The method provided by the invention well overcomes the defects in the prior art. The test proves that the method has favorable application effect and has the characteristics of quick start of the blowout stand-by boiler, favorable maintenance effect and obvious energy-saving effect.

The invention discloses a method for biologically treating industrial circulating water and stabilizing the quality thereof. The method is characterized by comprising a, separately breeding bacterial strains; b, performing acclimatization for the bacterial strains; c, culturing and preparing the bacteria; d, culturing the bacteria in an industrial expanding manner to produce medicinal products; and e, directly adding the produced medicinal products into a circulating water pond. The method has the advantages that the quality of the industrial circulating cooling water is stabilized by the aid of the biotechnology and method, in a circulating water system, currently preferred chemical corrosion and scale inhibitors, bactericides and other chemical agents are replaced by microbial agents; and the microbial agents are produced by a special process, and aerobic bacteria, anaerobic bacteria and facultative anaerobic bacteria which have biological reaction functions are optimized, are subjected to acclimatization and then are cultured in an industrial expanding manner to obtain the microbial agents (medicament or microbiological products in short).

The invention discloses an anti-freezing expansion structural body of a roadbed in a seasonal frozen soil region and a pavement method of the structural body. The anti-freezing expansion structural body is characterized in that the anti-freezing expansion structural body comprises a perforated ventilation pipe, a chimney ventilation pipe, a hole-shaped ventilation plate, a heat insulation and cooling material, a roadbed construction and weather resistant paint. The pavement method comprises the steps of a double cloth isolation method, a chimney ventilation pipe method, a sun-proof and coolingbody method, a hole-shaped ventilation plate method and a coating method. The body is relatively simple and convenient in construction and higher in construction effect. Construction materials are low in cost, strong in weather resistance and long in service life. The body can be widely applied to newly constructed Sichuan-Tibet railway, permafrost railways and seasonal railways and highways, reduces the temperature of the roadbed comprehensively, prolongs a service life of the roadbed, and improves the stability of the roadbed and running safety of trains and automobiles.

The invention provides a hair-cracking repairing material for concrete, and belongs to the technical field of sealing curing agents in the field of building materials. The provided hair-cracking repairing material for the concrete is prepared from, by weight, 20-50 parts of main agent, 0.1-0.4 part of stabilizing agent, 0.5-1.5 parts of dispersing agent, 0.2-0.8 part of curing agent, 0.2-0.8 partof complexing agent, 0.2-0.5 part of antifoaming agent, 0.3-1 part of penetrating agent and 50-70 parts of water, wherein the main agent comprises a mixture of one of sodium silicate and potassium silicate and lithium silicate, and the weight ratio of sodium silicate or potassium silicate to lithium silicate is (0.25-4):1. The provided hair-cracking repairing material for the concrete has the advantages that the curing effect is good, the wear of the concrete can be obviously reduced after the material is applied on the surface of the concrete, micro cracks are closed, etching of water is blocked, the durability of the concrete is improved, and the service life of an airfield runway is prolonged.

The invention discloses a cold repairing material for asphalt road surfaces, as well as a preparation method and application of the cold repairing material. The cold repairing material is the mixture of a cold repairing binder and an aggregate material, wherein the mass ratio of the cold repairing binder to the aggregate material is 4-8:100. The cold repairing material for the asphalt road surfaces relies on the slow release technique of the cold repairing binder, so that the stability of asphalt can be improved, and the cold repairing material can be stored for a longer time; besides, the flexibility of the cold repairing material can be improved, so that the cold repairing material can be applicable under low-temperature weather conditions in winter. The cold repairing material is an oily material, has stable properties, is undissolved in water, and is insensitive to maneuvering impact, static electricity and the like. The components of the formula of the cold repairing material are environment-friendly materials, and do not generate any volatile substances polluting the environment during storage and use, so that the cold repairing material totally conforms to the environmental protection requirements.