42results about How to "Good construction technology" patented technology

The invention discloses molded normal temperature curing urethane resin composition and a preparation method thereof. The compound comprises A type substance and B type substance which are packed independently, wherein the A type substance comprises prepolymer prepared by polymer polylol and isocyanate, carbon soot, filling, ultraviolet light absorbing agent, chemical inhibitor, wetting agent, deicer, foam suppressor, coupling agent and plasticizer; the B type substance is chain extendor; and the ratio of the quantity of active functional group substance of the B type substance to the quantity of active functional group substance of the A type substance is 0.8-1.0. The preparation method comprises the following steps: preparing and cooling the prepolymer capped by the isocyanate for reservation; preparing the A type substance; directly packing the chain extendor or packing the chain extendor after being diluted to be used as the B type substance; evenly mixing the measured A and B types of substances and maintaining the mixture under normal temperature to obtain the molded normal temperature curing urethane resin composition. The molded normal temperature curing urethane resin composition has good constructional processing property and is easy and convenient to prepare.

The invention discloses an epoxy resin modified silica sol based high-temperature-resistant hydrophobic coating which is composed of the following components in percentage by mass: 60-65% of epoxy resin modified silica sol, 7-9% of rutile titanium dioxide, 8-12% of glass dust, 9-10% of sericite powder, 0.5-1% of organic bentonite and 9-14% of butyl acetate. The preparation method is implemented through the following steps of: preparing epoxy resin modified silica sol firstly, reacting gamma-triethoxypropylsilane with epoxy resin, and then adding tetraethoxysilane for carrying out hydrolytic condensation; adding filler and a solvent in the prepared product in proportion, and carrying out high-speed mixing and grinding on the obtained mixture until the fineness of the obtained product is below 50 mu m so as to obtain the coating disclosed by the invention. A film prepared by dying and solidifying the coating disclosed by the invention has the advantages of good mechanical properties, excellent hydrophobic properties, good high temperature resistance and weather resistance, and the like. The coating is applicable to the high-temperature-resistant protection and decoration of metal substrates such as aluminum plates, tinplate and steel plates.

The invention relates to a method for preparing polyurethane adhesive by using waste polyuret0hane recovery product by using montmorillonite. The method comprises the following steps: (1) using the waste polyurethane elastomer as a raw material, adding an alcoholysis agent and an auxiliary alcoholysis agent, degrading the waste to obtain regenerated polyol by heating and under a certain of reducing atmosphere condition; (2) secondarily modifying the montmorillonite; (3) adding auxiliary and the secondarily modified montmorillonite in the regenerated polyol to obtain the polyurethane adhesive. The regenerated polyol obtained through the invention is stable in property, uniform in molecular weight, and small in viscosity number, and a hydroxyl value meets the use requirement of the polymer polyol; the secondarily modified montmorillonite is used for modifying the adhesive, the use performance and the applicable range of the adhesive are greatly improved, the tensile strength is improved by 38% and more, the bending strength and the bending modulus are improved by 40% and more.

The invention provides a deinking agent of electrolytic nickel button plate for screen printing and preparation method thereof, comprising(by weight percentage): 61.1-66.7% of methylene chloride, 0-19.4% of phenol, 8.3-16.7% of formic acid, 2.8-8.3% of acetic acid, 1.4-2.8% of methyl cellulose, 0.7-2% of organobentonite, 2-3.1% of maleic rosin octylphenol polyoxyethylene ether sodium dicarboxylic acid, 1.4-2.8% of hexamethylenetetramine, 0-1.4% of benzotriazole, 2.8-4.2% of olefin. The preparation method comprises: getting the materials ready; putting the olefin into the blending kettle with jacket; steam heating the jacket and intermediately stirring and stopping heating when the olefin completely fuses at 60 degree; continually stirring and slowly adding methylene chloride and cooling the jacket to normal temperature by tap water; continually stirring and slowly adding phenol, formic acid and acetic acid and then adding the methyl cellulose, organobentonite, maleic rosin octylphenol polyoxyethylene ether sodium dicarboxylic acid, hexamethylenetetramine, benzotriazole in turn, when the phenol completely dissolves.

The invention discloses a conductive anticorrosion paint and a preparation method thereof. The paint is mainly composed of phenolic resin, a phenolic resin curing agent, a conductive filling material,an antiseptic, a diluent, a fire retardant, and a solvent. The conductive anticorrosion paint employs a spraying mode or a brush coating mode to prepare a conductive anticorrosion coating layer on aprocessed workpiece surface, can be widely used for metal structural members such as an electric power industry grounding grid apparatus, a petrochemical industry oil storage apparatus and the like, realizes electric conduction, static powder conduction, and anticorrosion functions, and can achieve the on-site usage requirement. The preparation technology of the paint is simple, and the industrialproduction is easily realized.

The invention discloses conductive anti-corrosion paint and a preparation method thereof. The conductive anti-corrosion paint is mainly prepared from the following ingredients in parts by weight: 24 to 44 parts of carboxyl acrylic resin, 16 to 32 parts of carboxyl acrylic resin curing agents, 4 to 12 parts of conductive filling materials, 0.5 to 3.2 parts of diluents, 0.8 to 3.8 part of preservatives, 0.3 to 1.6 parts of coupling agents, 0.2 to 0.8 part of flatting agents and 15 to 35 parts of solvents. The paint recipe and proportion are optimized, so that the conduction and anti-corrosion functions of the paint are realized; the spray coating or brush coating mode is used for preparing the conductive anti-corrosion coating on the surface of the treated workpiece; the paint can be widelyused on metal structure elements of electric industry grounding net device, petrochemical industry oil storage devices and the like; the functions of conduction, static electricity conduction, anti-corrosion and the like can be realized; the field use requirements are met.

The invention relates to brucite fiber paste used for toughening cement-based materials and a preparation method thereof. The brucite fiber paste comprises natural brucite fibers, water reducing agents and water in a weight ratio of 1:(0.2-1.2):(0.15-0.75), wherein, the natural brucite fiber is of grade 6 or 7. The preparation method is characterized by adding the above raw materials into a forcedmechanical mixer to be mixed and stirred for 5-15min and then placing the mixture for more than 24h in an airtight mode. The brucite fiber paste is used in cement concrete as a toughening material. The usage of the brucite fiber paste in the cement concrete is 5-15% of that of the cement. The brucite fiber paste and other raw materials are simultaneously added into the mixer while the cement concrete is blended, and are mixed for 2-4min. The brucite fiber paste is used for the concrete, enjoys good fiber split property, good construction technological property and low cost, is easily dispersed in the concrete, can avoid dust fly while the concrete is blended and ensures obvious fiber toughening effect.

The invention relates to a method for preparing a high-temperature blending epoxy asphalt curing agent for paving and the application of the high-temperature blending epoxy asphalt curing agent in epoxy asphalt.A hyperbranched polymer which contains an aromatic amine group and a hydroxyl group is generated through condensation reaction of hyperbranched polyether containing hydroxy and aromatic amino acid under the action of a catalyst and aliphatic acid anhydride to obtain the high-temperature blending epoxy asphalt curing agent.The curing agent has a highly branched molecular structure and low viscosity, has a low reaction speed with epoxy resin at a high temperature, can be used for preparation of high-temperature blending epoxy asphalt, and still has certain reactivity at indoor temperature.Raw material source is wide, and preparing process is simple.The method can be used for preparing high-temperature blending epoxy asphalt for high-grade road surface and bridge deck pavement and has the advantages that high-temperature viscosity is low, reserved time is long, and curing crosslinking can be achieved fast at indoor temperature.

The invention provides a high-speed railway ballastless track convex blocking table filling material and a preparation method thereof. The material comprises the following raw materials: a component Amaleimide modified asphalt, a component B epoxy resin and a component C epoxy resin curing agent, the component C is prepared from the following raw materials in parts by weight: 100 parts of a polyether amine curing agent, 20-45 parts of a blocked polyurethane prepolymer, 10-20 parts of amino polydimethylsiloxane, 0-2.5 parts of a curing accelerator and 5-17.5 parts of an auxiliary agent; the mass ratio of the component B to the component C is 1: (0.65-1.35), and the mass ratio of the component A to the sum of the component B and the component C is (0.5-1.5): 1. After the filling material iscured, an epoxy resin-polyurethane interpenetrating polymer network or island structure is formed, the flexibility of the material is greatly improved, and the shearing strength, the adhesive force,the tensile strength, the bending strength and the like of an adhesive layer are improved.

The waterborne epoxy anticorrosive paint comprises a component A and a component B. The component A comprises waterborne epoxy resin A, waterborne epoxy resin B, a dispersing agent, a defoaming agent, a wetting agent, a thixotropic agent, an anti-flash agent, pigment, filler and deionized water, the component B comprises a curing agent and deionized water, and the curing agent is an amine curing agent. The invention further provides a preparation method of the waterborne epoxy anticorrosive paint. The preparation method comprises a specific mixing sequence and process parameters.

The invention provides a repairing method of a low temperature tank heat insulation layer. The method is characterized in that the heat insulation layer is repaired by adopting an ultralow temperature resistant pressure sensitive adhesive. The developed ultralow temperature resistant pressure sensitive adhesive is used in a quick repairing method of the damaged heat insulation layer of the low temperature storage of a new generation carrier rocket. The method has the advantages of no need of a solvent, no need of onsite preparation of the adhesive, clean field, simple construction, and high bonding strength of the pressure sensitive adhesive at an ultralow temperature; and the ultralow temperature resistant pressure sensitive adhesive has the advantages of no solvent, low curing temperature, short curing time, and no influences on the performances of the heat insulation layer and environmental protection of the curing process.

The invention relates to a doubly-fed wind generator slip ring chamber cooling structure. The cooling structure comprises a shell with a polygonal longitudinal section, an air inlet window is fixedly installed on the lateral lower portion of the shell, a first air guide plate and a second air guide plate are installed on the inner side of the air inlet window, an air channel is formed between the first air guide plate and the second air guide plate, and a first cover plate is fixedly installed on the lateral upper portion of the shell. A third air guide plate is installed on the inner side of the first cover plate, the front edge of the third air guide plate partially extends into the brush frame of the sliding ring chamber, a back plate is fixedly installed on the rear end face of the shell, an air outlet hole is formed below the back plate, and a cooling medium circulation air path is formed among the first air guide plate, the second air guide plate, the third air guide plate, the sliding ring and the brush frame. According to the slip ring chamber cooling structure, the air guide plates are effectively combined with the brush frame ring plate and the slip ring to form a tight air path structure, so that most of the cooling medium flows through the surfaces of each group of carbon brushes and slip rings and does not flow in the peripheral space between the brush holder and the slip ring chamber shell, and the temperature of the slip rings and the carbon brushes is reduced.

The invention discloses application of an ultra-low temperature resistant pressure-sensitive adhesive in rocket pipeline flexible foamed plastic bonding. The application comprises the following steps: manufacturing a flexible foamed plastic precast block with ultra-low temperature resistant pressure-sensitive adhesive; manufacturing a pipeline with ultra-low temperature resistant pressure-sensitive adhesive; and bonding and pressing the flexible foamed plastic precast block on the corresponding position of the pipeline. The pipeline flexible foamed plastic bonding method and pipeline disclosed by the invention can meet requirements of the new generation of bonding flexible foamed plastic for carrying low-temperature rocket pipelines on site operation, being ready to use since being packaged, construction of foamed plastic bonding at minus 20-50 DEG C and ultra-low temperature resistance.

The invention discloses halogen-free flame-retardant insulating paint and a preparation method thereof. The insulating paint is prepared from the following raw materials: phosphorus-containing unsaturated polyester resin, silicon-containing epoxy resin, bifunctional methacrylate, a curing agent, an accelerant, an initiator and a selectable flame retardant, the insulating paint is prepared by the following method: adding the prepared phosphorus-containing unsaturated polyester resin and silicon-containing epoxy resin into a reaction kettle, heating, vacuumizing and reacting, gradually cooling, sequentially adding the bifunctional methacrylate, the accelerant, the flame retardant, the curing agent and the initiator, filtering and packaging to obtain the insulating paint. The special phosphorus-containing unsaturated polyester resin and the silicon-containing epoxy resin are adopted and combined with the bifunctional methacrylate, an insulating layer formed after the insulating paint is cured has good flame retardance, proper viscosity is controlled, rapid curing at a low temperature can be achieved, and the use manufacturability is good.

The invention provides a formula of polyurethane foam capable of being poured at room temperature. The formula comprises polyether, polyisocyanate, a triethylene diamine solution and dibutyltin dilaurate. Through selection and ratio regulation of catalysts, namely the triethylene diamine solution and the dibutyltin dilaurate, polyurethane plastics can be poured and molded at room temperature, and a problem that the polyurethane plastics cannot be poured and molded at low temperature in China at present is solved.