165results about How to "Short curing time" patented technology

The invention relates to a biodegradable high-strength medical soft tissue adhesive as well as a preparation method and application thereof. The medical soft tissue adhesive comprises a soft segment, a hard segment and a hard segment chain extender, the soft segment is a polyethylene glycol polymer; the hard segment is isocyanate; the hard segment chain extender comprises a hard segment electrically neutral chain extender and a hard segment ionized chain extender; the molar ratio of the polyethylene glycol polymer to the isocyanate to the hard segment electrically neutral chain extender to the hard segment ionized chain extender is (1-7): (50-95): (14-20): (2-6). The preparation method comprises the following steps: mixing the polyethylene glycol polymer, the hard segment chain extender and the isocyanate, heating and reacting to obtain a mixed reaction system; cooling after the reaction is completed, adding a rheology modifier, a foaming catalyst and a stabilizer into the mixed reaction system, and uniformly mixing to obtain the biodegradable high-strength medical soft tissue adhesive which is suitable for functional composite materials.

The invention relates to the technical field of adhesives, and discloses a weather-resistant transparent adhesive, a preparation method and application of the weather-resistant transparent adhesive to adhesion of a weather-resistant and wear-resistant transparent film and a color-coated sheet. The preparation method of the weather-resistant transparent adhesive comprises the following steps: reacting 4-(2, 3-ethylene oxide) benzaldehyde with tetrakis (3-mercaptopropionic acid) pentaerythritol ester to obtain an intermediate product A; reacting the intermediate product A with 4, 5-diaminobenzene-1, 2-diphenol to obtain an intermediate product B; preparing nano zinc oxide, performing surface modification on the nano zinc oxide, and grafting the intermediate product B to obtain an organic-inorganic hybrid curing agent; modifying epoxy resin by using the composite modifier to obtain modified epoxy resin; the modified epoxy resin, the organic-inorganic hybrid curing agent and the accelerant are mixed and stirred, and the weather-resistant transparent adhesive is obtained; the weather-resistant transparent adhesive disclosed by the invention is high in transparency and has excellent mechanical strength, toughness, adhesiveness and weather resistance.

The invention relates to the technical field of polyurethane adhesives, in particular to a quick-curing two-component hot-pressing adhesive as well as a preparation method and application thereof. Comprising a component A and a component B. The component A comprises, by weight, 20 to 60 parts of castor oil polyol, 40 to 80 parts of a filling material, 0.001 to 0.01 part of a catalyst and 0.001 to 0.006 part of an auxiliary agent, and the catalyst comprises a triethylene diamine-terminated heat-sensitive catalyst; and the component B comprises an isocyanate curing agent. The filler comprises heavy calcium carbonate and calcium oxide, and the weight ratio of the heavy calcium carbonate to the calcium oxide is (25-40): 1, so that not only can the cost be effectively reduced, but also the tensile-shear strength of the hot-pressing adhesive can be improved; and when the particle size of the filler is adjusted to be 500-2000 meshes, the tensile-shear strength after cementing can be effectively maintained within a relatively low curing time (3-5 minutes), and meanwhile, the storage stability of the sizing material is improved.

The invention relates to the technical field of three-proofing paints, in particular to a UV moisture dual-curing three-proofing paint and a preparation method thereof. The conformal coating is prepared from the following raw materials in parts by weight: 10-80 parts of acrylate resin; 20 to 60 parts of a UV reactive diluent; 3-15 parts of a polyurethane latent curing agent; 1 to 10 parts of a photoinitiator; 1-5 parts of a dewatering agent; the acrylic resin comprises at least one of urethane acrylate and isocyanate modified acrylate. According to the invention, when the specific curing agent is selected, especially the oxazolidine latent curing agent or imine latent curing agent containing at least two oxazolidinyl groups is adopted, the curing time of the conformal coating in a dark environment can be greatly shortened, and meanwhile, the problems of bubbles, pinholes and the like caused by moisture in the curing process of the conformal coating can be effectively solved; good market application values are realized.

The invention discloses an insect-repelling environment-friendly sand-containing fog sealing layer and a preparation method thereof. The insect-repelling environment-friendly sand-containing fog sealing layer comprises the following components in parts by mass: 35-70 parts of asphalt; 30 to 70 parts of water; 2-8 parts of a composite emulsifier; 0.5 to 3 parts of a defoaming agent; 5 to 30 parts of acrylic ester; 0.1 to 1 part of a photoinitiator; 20 to 40 parts of a suspending agent; 20 to 45 parts of fine sand particles; 5 to 40 parts of insect-repelling environment-friendly microcapsules; a shell material of the insect-repelling environment-friendly microcapsule is a composite shell material containing silicon dioxide / nano tourmaline, and a core material of the insect-repelling environment-friendly microcapsule comprises one or more of a pyrethroid compound, a carboxylic ester compound, an amide compound and a plant extract; a metal chelate is loaded on the surface of the shell material. The insect-repelling environment-friendly sand-containing fog sealing layer has good pavement performance and insect-repelling performance, and can effectively inhibit the amount of pollutants generated when an asphalt pavement is exposed to high temperature and solarization.

The invention belongs to the technical field of grouting materials, and particularly relates to a graphene modified ternary composite ultrafast curing grouting material and a preparation method thereof. The technical scheme is as follows: the graphene modified ternary composite ultrafast curing grouting material comprises the following components: a main agent and a curing agent in a weight ratio of 4: 1, wherein the main agent is prepared from the following components in parts by weight: 30 to 33 parts of modified nano calcium silicate, 0.8 to 0.9 part of functionalized graphene, 3.8 to 4.2 parts of intelligent response type expansion factors, 2.5 to 3.0 parts of nanoscale molecular sieves and 18 to 20 parts of surface modified composite mineral admixtures; the main agent is prepared by adopting a special dispersion medium; the curing agent is prepared from the following components in parts by weight: 1.5 to 1.8 parts of amino-functionalized carbon nanotubes, 9 to 10 parts of an active site initiator, 4.5 to 5.0 parts of an interface coupling agent composite system and 2.5 to 2.8 parts of an intelligent regulation and control aid; the curing agent is prepared by a special carrier. The invention provides a graphene modified ternary composite ultrafast curing grouting material and a preparation method thereof.

The invention provides photo-crosslinking conductive ink based on aliphatic polycarbonate as well as a preparation method and application of the photo-crosslinking conductive ink. The photo-crosslinking conductive ink comprises an aliphatic polycarbonate polymer, a plasticizer, a crosslinking agent, a crosslinking catalyst and a photo-crosslinking agent. According to the invention, a carbonate monomer 5-methyl-5-carboxyl trimethylene carbonate initiated by PEG2000 is adopted, and an aliphatic polycarbonate polymer is synthesized through a copolymerization reaction and is used as a main matrix material of the conductive ink; the conductive ink not only has good conductivity, but also has biocompatibility and environmental friendliness, and the application range of the conductive ink in the fields of medical instruments, biosensors and the like is widened; the excellent mechanical property ensures that the conductive ink can keep structural integrity and functional stability in practical application, and the conductive ink is particularly suitable for flexible electronic devices and wearable equipment which need to be frequently bent and stretched. The preparation steps are simple and convenient, the process is controllable, raw materials are easy to obtain, energy consumption in the process is low, and the cost advantage is achieved.

The invention discloses a room-temperature-cured high-strength high-thermal-conductivity and high-electric-conductivity silver adhesive which is characterized by comprising the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 2-6 parts of carbon nanotubes, 200-450 parts of conductive particles, 1-5 parts of a silane coupling agent, 5-12 parts of a cross-linking agent and 0.5-5 parts of a catalyst. The invention further discloses a preparation method of the room-temperature-curing high-strength high-thermal-conductivity and high-electric-conductivity silver adhesive. The room-temperature-cured high-strength high-thermal-conductivity and high-electrical-conductivity silver adhesive has the advantages of short curing time, low volume resistivity, high bonding strength and good electrical conductivity. The product is tested after being placed in an outdoor environment for 12 months for a long time, the volume resistivity and the bonding strength of the conductive silver adhesive disclosed by the invention are hardly influenced, and the conductive silver adhesive shows excellent weather resistance; the product has high stability and can be used for a long time.

The invention relates to the technical field of adhesives, and discloses a preparation method and application of a modified urea-formaldehyde resin adhesive. The invention adopts an "alkali-acid-alkali" synthesis process, and adds a cyclic heterocyclic polyphenol flame retardant in the early stage of the reaction of formaldehyde and urea to participate in the synthesis reaction of synthesizing urea-formaldehyde resin. The phenolic hydroxyl group in the flame retardant structure can react with formaldehyde, thereby reducing the free formaldehyde content in the molecule; the structure contains phosphorus and nitrogen synergistic flame retardant elements, which can promote the endothermic dehydration carbonization reaction of hydroxyl-containing compounds and play a positive role in inhibiting the combustion-supporting factors of charcoal materials; the epoxy group of epoxidized lignin can undergo a cross-linking reaction with urea-formaldehyde resin, thereby promoting the reaction of lignin and formaldehyde and reducing the formaldehyde release of plywood; the urea-formaldehyde resin adhesive has low free formaldehyde content and short curing time, and the plywood prepared by using the adhesive has low formaldehyde release, good flame retardant performance and high bonding strength.

The invention discloses a method for manufacturing a high-wear-resistant composite swing hammer head, which comprises the following steps: washing and drying ceramic particles with an oxalic acid solution, uniformly mixing boron carbide ceramic powder and an alcohol adhesive in proportion into a slurry, and drying to remove the alcohol adhesive; then mixing the ceramic particles with NiCrBSi powder and a sodium silicate solution and filling the mixture into a honeycomb mold, taking the mixture out after microwave curing, thereby obtaining a honeycomb ceramic preform with high strength at room temperature, wherein a conical preformed hole is formed on the honeycomb ceramic preform, placing the honeycomb ceramic preform into a casting cavity of a swing hammer head metal mold, and then pouring molten high-chromium cast iron into a runner of the casting mold, wherein the high-chromium cast iron water infiltrates into gaps between ceramic preform particles under high pressure to form a reactive interface, thereby obtaining a high-wear-resistant composite swing hammer head. The method can manufacture a composite swing hammer head with a reactive interface and high wear resistance.

The invention relates to the field of aluminum alloy door and window enterprises, and discloses an electrostatic powder spraying process and device for aluminum alloy machining, and the electrostatic powder spraying process comprises the following steps: pretreatment: pretreating an aluminum alloy base material, the pretreatment comprises polishing, cleaning and preheating treatment; powder treatment is conducted, specifically, a treatment agent accounting for 5%-10% of the mass of the powder base material is added into the powder base material, high-speed stirring is conducted, spraying powder is obtained, and the treatment agent is composed of a low-Tg polyester resin modifier and nano titanium dioxide; and electrostatic spraying is conducted, specifically, powder spraying is conducted on the surface of the pretreated aluminum alloy base material through electrostatic powder spraying equipment through spraying powder. Powder added with a treating agent is sprayed to an aluminum alloy base material, low-temperature rapid curing is conducted, the curing process of the coating is rapidly completed at the relatively low temperature through stage gradient temperature curing and auxiliary curing, and the curing efficiency and quality are further improved through ultraviolet light and microwave auxiliary curing.

The invention discloses a high-performance environment-friendly UV (ultraviolet) adhesive for batteries and a preparation method thereof, and the UV adhesive is prepared from the following raw materials in parts by weight: 20-50 parts of acrylate prepolymer, 30-70 parts of first acrylate monomer, 1-10 parts of photoinitiator, 5-15 parts of thixotropic agent and 0.5-5 parts of other auxiliaries, the acrylate prepolymer is prepared from the following raw materials: compound polyol, isocyanate and a second acrylate monomer; the compound polyol comprises a flexible polyol and a hard polyol which are compounded according to a molar ratio of 1: (1-5). According to the high-performance environment-friendly UV adhesive for the battery, the viscosity is smaller than 5000 cps, Tg is larger than or equal to 70 DEG C, the elongation at break is larger than or equal to 550%, the shear strength is larger than or equal to 5 MPa, and the resistivity is larger than or equal to 109 omega.m. The UV adhesive disclosed by the invention has the characteristics of low viscosity, high thixotropy, convenience in sizing, short curing time, good flexibility of cured adhesive, high bonding strength and excellent heat resistance and insulating property.

The invention discloses a preparation method of a rapidly-cured expanded graphite-based fuel cell composite bipolar plate, which comprises the following steps: cutting soft cut carbon fiber foam with a three-dimensional structure into the size of the bipolar plate, immersing into liquid resin for 10-30 minutes, and drying in a vacuum drying oven at 25-40 DEG C; and putting the pre-cold-pressed expanded graphite as a top layer and a bottom layer of the bipolar plate into a mold under the pressure of 10-15 Mpa, putting the soft cut carbon fiber foam resin into a middle layer, heating to 90-150 DEG C under the pressure of 10-15 Mpa, keeping for 110 seconds to 58 minutes, and demolding to obtain the composite bipolar plate of the fuel cell. The hot press molding method is simple, the plane conductivity of the prepared bipolar plate reaches 375.8 S / cm, the maximum bending pressure reaches 88.53 N, the bending strength is 61 Mpa, the air tightness is 2.32 * 10 <-8 > cm < 3 > cm < 2 > s <-1 >, the water contact angle is 92 degrees, the corrosion-resistant current is 0.345 mu A / cm < 2 >, and large-scale production can be achieved.

The invention discloses a modified isocyanate prepolymer, a preparation method thereof and a degradable biological adhesive, and belongs to the technical field of medical adhesives. The preparation method comprises the following steps: firstly, continuously reacting alcohol with polyhydroxy acid at a certain temperature to obtain a polyester soft segment containing part of hydroxyl and carboxyl functional groups; and adding isocyanate or isocyanate and alcohol into the prepolymer, and reacting to obtain the modified isocyanate prepolymer. And mixing the modified isocyanate prepolymer with a curing agent to obtain the polyurethane biological adhesive. The curing agent is an unsaturated carbonyl compound modified amine curing agent or a polyamine modified polyphenol curing agent. The polyurethane adhesive is applied to adhesion of a wet tissue interface, and during application, the polyurethane biological adhesive is smeared to a tissue part needing to be adhered and sealed, and in-situ curing is realized. The process for preparing the isocyanate prepolymer is simple, and the polyurethane biological adhesive obtained by utilizing the isocyanate prepolymer is easy to degrade and good in wet adhesion.

The invention relates to the technical field of organic silicon resin preparation, in particular to trapezoidal methyl silicon resin and a preparation method thereof.The trapezoidal methyl silicon resin is prepared by taking methyl trichlorosilane as a main raw material, introducing a trapezoidal control agent containing amido and alkoxy at the same time to inhibit the reaction activity of the methyl trichlorosilane and then carrying out hydrolysis reaction in a small amount of alcohol solvent and water; the generation of a cross-linked network structure insoluble substance during hydrolysis is avoided, and the resin gelation risk is effectively reduced. The hydrolysis rate is reduced, so that the use amount of the solvent is reduced, the proportion of alcohol in the water phase is greatly reduced, and the process and environmental protection cost is reduced. The trapezoidal methyl silicone resin prepared by the method is excellent in viscosity performance, high in yield, excellent in boiling resistance, short in curing time, high in resin softening point and short in gelation time.

The invention discloses a flow-state solidified soil backfill light flexible pipe ditch structure and a construction method thereof. The construction method comprises the steps that a pipe bottom foundation layer is arranged at the bottom of a pipe ditch and filled with early-strength type flow-state solidified soil poured gravel; the light flexible pipe is placed on the pipe bottom foundation layer, the number of pouring layers is determined based on pipeline anti-floating treatment, and early-strength type flow state solidified soil is sequentially and gradually backfilled and poured on the outer side of the periphery of the pipe layer by layer according to the preset layered pouring thickness to form a stable layer at least wrapping a part of the light flexible pipe; and a backfill layer which is formed by backfilling and pouring light high-rigidity flow-state solidified soil for one time and covers the pipe ditch is arranged above the stable layer and the light flexible pipe. The flow-state solidified soil is adopted, the early strength of layered backfilling is high, the curing time is short, the construction period can be shortened, continuous backfilling can be guaranteed, the construction time is greatly shortened, the anti-floating backfilling layer number and the pouring thickness are given, clear guidance is provided for construction, and efficient backfilling operation and structural stability are guaranteed.

The invention relates to the technical field of coatings, in particular to a photo-thermal hydrophobic coating and application thereof on an asphalt pavement. The photo-thermal hydrophobic coating is prepared from the following raw materials in parts by weight: 1 to 1.5 parts of multiwalled carbon nanotubes, 3 to 4 parts of titanium dioxide, 6 to 7 parts of lauric acid and 100 parts of absolute ethyl alcohol. The anti-icing coating with a rough surface is constructed on the road surface by using the multi-walled carbon nanotubes, titanium dioxide and lauric acid, the anti-icing coating has hydrophobic anti-icing performance and photo-thermal anti-icing performance at the same time, and the effects of inhibiting the formation of road icing and accelerating the thawing of the road icing can be achieved by fully utilizing solar energy. In an extremely low-temperature environment, the coating still can obviously delay the icing of water on the surface of the coating, and has good anti-icing performance; under the condition of weak light, the hydrophobicity of the coating can still play an ice inhibiting role, and all-weather anti-icing and deicing are achieved.

The utility model relates to the technical field of carbon fibers, in particular to a fusion device for carbon fiber parts. According to the technical scheme, the device comprises a base, a stand column and a steering motor are fixedly installed on the two sides of the upper surface of the base respectively, a connecting plate is fixedly connected to the tail end of an output shaft of the steering motor, a heating frame is fixedly connected to the tail end of the connecting plate, and grooves are formed in the upper surface and the lower surface of the heating frame; and an electric heating plate is fixedly installed at the position, between the two grooves, in the heating frame, a sliding groove is formed in the inner side of the stand column, a two-way lead screw is rotationally installed in the sliding groove, and threaded sliding blocks are symmetrically and movably connected to the positions, close to the two ends, of the outer surface of the two-way lead screw in a sleeving mode. According to the utility model, the upper shell and the lower shell of the intelligent sound box made of the carbon fiber injection molding material can be quickly fixed, so that the upper shell and the lower shell are welded together, the sealing performance is improved, the bonding process of an adhesive is omitted, the curing time of the adhesive is saved, and the cost is also saved.

The invention relates to a root canal filling material premixed with nano niobium silicate and a preparation method of the root canal filling material. The filling material is prepared from a) nano niobium silicate powder; b) calcium silicate compound powder; c) an X-ray radiation-resistant filler; the dosage of the component a) is 1-10% by mass, and the sum of the dosage of the component a), the dosage of the component b) and the dosage of the component c) is 40-90% by mass. According to the filling material disclosed by the invention, a proper amount of nano niobium silicate is introduced, so that the curing time can be remarkably shortened, the flowability is improved, the filling material can be bonded with tissues around a root canal, repair and regeneration of dentin are actively promoted in combination with the nano niobium silicate, and compared with an existing material, repair and regeneration after defect of an apical alveolar bone can be remarkably improved.

The invention belongs to the technical field of metal packaging tin making, and discloses a laminated iron product prepared from full-solid-content electron beam curing glue. The product comprises the following components in parts by weight: 50-90 parts of polybutadiene polyurethane acrylate, 3-25 parts of organic silicon polyurethane acrylate, 0.1-1.5 parts of an auxiliary agent and 5-15 parts of a polyfunctional group acrylate diluent. The specific preparation method of the product comprises the following steps: S1, preparing process aspect; s2, a coating link; s3, fitting characteristics; s4, curing mode; s5, performance expression; and S6, controlling bond fracture and new bond generation under electron beam irradiation. By the adoption of the full-solid-content gluing technology, the coating is a single-component product, easy and convenient to operate, non-toxic, safe, capable of being coated at the normal temperature or heated to 60 DEG C, free of VOC emission in the whole process, environmentally friendly, capable of saving energy, capable of bringing brand new development opportunities to related industries, representative of a novel curing technology, wide in prospect and worthy of being widely applied.

The invention discloses acrylate modified polyether block silicone oil and a preparation method thereof. The acrylate modified polyether block silicone oil is prepared by reacting an epoxy polyether monomer with hydrogen-containing silicone oil in the presence of a catalyst to synthesize epoxy polyether block silicone oil, the epoxy polyether block silicone oil reacts with (methyl) acrylic acid in the presence of a polymerization inhibitor and a catalyst to obtain the acrylate modified polyether block silicone oil. The acrylate modified polyether block silicone oil integrates the advantages of acrylate modified silicone oil and epoxy modified silicone oil, an acrylate functional group is short in curing time, an epoxy functional group is not subjected to oxygen inhibition and the like, and a polyether unit is directly grafted into a silicone oil structure, so that the problem of poor compatibility of a polyether diluting monomer and the acrylate modified silicone oil can be avoided. Epoxy polyether group modification can improve anchoring performance on a film / paper base material, end-position and side-position acrylic acid modification is higher in reaction activity compared with single acrylic acid modified silicone oil, curing efficiency can be improved, crosslinking degree can be increased, and residual adhesion rate can be increased.

The invention provides a bio-based epoxy emulsifier, a sizing agent, carbon fibers, a composite material and a preparation method of the bio-based epoxy emulsifier. The bio-based epoxy emulsifier is prepared from the following raw material components: polysaccharide, epoxy resin, phenolic acid and a catalyst. The preparation method of the bio-based epoxy emulsifier comprises the following steps: S101, heating epoxy resin to 50-100 DEG C until the epoxy resin is completely molten, then adding polysaccharide, and reacting at 80-110 DEG C for 4-15 hours to obtain polysaccharide modified epoxy resin; s102, the polysaccharide modified epoxy resin is heated to 120-200 DEG C, phenolic acid and a catalyst are added, a reaction is conducted for 5-18 h, and the bio-based epoxy emulsifier is obtained. No organic solvent is needed in the process of preparing the sizing agent by using the bio-based epoxy emulsifier provided by the invention, and meanwhile, the sizing agent prepared by using the emulsifier can improve the performance of carbon fibers and composite materials.

The utility model discloses a hot melt adhesive dispensing mechanism which comprises an adhesive supply unit, an adhesive dispensing valve and a metering pump respectively connected with the adhesive dispensing valve, a switching block is arranged below the metering pump, one end of an L-shaped liquid inlet runner is communicated with a liquid inlet of the metering pump, and the other end of the L-shaped liquid inlet runner extends to be communicated with an adhesive supply runner on an adhesive supply block. One end, far away from the L-shaped liquid inlet flow channel, of the glue supply flow channel is connected with the glue supply unit through a glue supply pipe, the other end of the L-shaped liquid outlet flow channel with one end communicated with a liquid outlet of the metering pump extends to be communicated with a glue inlet in the dispensing valve through a connecting block, and at least one heating pipe is embedded in each of the switching block, the glue supply block and the connecting block. On the basis that glue is metered and pressurized, hot melt glue can be selected to shorten the curing time after glue dispensing, the occupied workshop area in the photovoltaic glass machining process is further saved, real-time heating can be carried out to guarantee the fluidity of the hot melt glue, and therefore the glue dispensing precision and effect are guaranteed.

The invention relates to the field of constructional engineering materials, in particular to a preparation method of multi-active-center synergistic flow-state solidified soil, which ensures the uniformity and stability of materials by accurately controlling the particle size of construction waste and the proportion of high-temperature treated sludge. The construction waste is mixed with the high-temperature sterilized sludge, so that the fluidity and self-compaction of the solidified soil are improved, the construction period is shortened, the cost is reduced, and the environmental pollution is reduced. The FAU / carbon composite material enhances the early strength and bearing capacity of the solidified soil, shortens the solidification time and enhances the impermeability. The montmorillonite soil improves the workability and environmental adaptability of the solidified soil, absorbs excessive moisture, reduces shrinkage and cracking, and improves the freeze-thaw resistance. Through the synergistic effect of the two components, stress transmission and dispersion are promoted, effective transmission of heat is improved, the mechanical property and the heat-conducting property of the fluid-state solidified soil are enhanced, the engineering efficiency and the environmental adaptability are improved, and an economical and practical solution is provided for the engineering environment.

The invention provides a composite material rapid curing device and a control method, the composite material rapid curing device comprises a support, a sliding door, a reference platform, a radiation wing, a heating device, a humidifying device and a vacuum device, and the support and the radiation wing are fixed through the reference platform; the support fixes the composite material, and the mutual positions of all the parts are adjusted; the composite material blade assembly is fixed through the radiation wings, and the mutual position relation between the radiation wings and the center part is adjusted; the heating device, the humidifying device and the vacuum device are all connected with a control system. The control method comprises the following steps: temperature control: controlling the working power and discontinuous time of the heating system through the temperature control system; humidity control, wherein the humidification atomization amount is controlled through frequency conversion; vacuum control: automatically controlling the vacuum degree through a vacuum sensor; the device is used for assembling, coating, drying and curing of the composite material, the temperature, the humidity and the vacuum degree can be controlled, and the efficiency of a composite material manufacturing and assembling process is remarkably improved.

The invention relates to a stator winding potting tool, which comprises a stator, a core mold, an upper mold, a lower mold, a sealing ring, a potting head, a rotating shaft, a gear transmission device, a motor, a UV lamp, a heating coil and the like, and is characterized in that the sealing ring is arranged between the upper mold and the lower mold, so that effective sealing between the stator and the molds is ensured, and glue leakage is prevented; bubbles in the stator and in the glue are extracted through vacuum equipment, and it is ensured that the glue evenly fills stator winding gaps; the motor drives the stator to rotate to generate centrifugal force, so that the glue is uniformly distributed in each gap of the stator winding; a UV lamp is arranged in the core mold and used for rapidly curing glue, the outer barrel is provided with a heating coil, stress generated in the glue curing process is eliminated through heating, efficient and uniform glue distribution, bubble elimination and stress elimination are achieved through the synergistic effect of centrifugal force, vacuum and heating, the stator winding potting quality and efficiency are improved, and the production efficiency is improved. The method is suitable for stator winding potting operation with high requirements on electrical insulation performance.

The invention relates to a polyurethane adhesive as well as a preparation method and application thereof. The adhesive is prepared from the following raw materials in percentage by weight: 35 to 65 weight percent of composite polyether polyol, 14 to 25 weight percent of polyisocyanate, 1 to 5 weight percent of hydrophilic chain extender, 1 to 5 weight percent of micromolecule chain extender, 0.05 to 3 weight percent of catalyst, 0.5 to 4 weight percent of neutralizer, 1 to 7 weight percent of end-capping reagent, 1 to 8 weight percent of silane coupling agent, 2 to 12 weight percent of mesoporous microsphere, 2 to 5 weight percent of isopropanol, 2 to 5 weight percent of butyl acetate, 0.2 to 4 weight percent of defoaming agent and the balance of water, wherein the composite polyether polyol is a composition of Mannich polyether polyol and flexible foam polyether polyol in a mass ratio of 1: (0.5-1); the adhesive disclosed by the invention can replace hot melt adhesive powder in garment pyrography, can improve the softness, air permeability, friction resistance and soaping-resistant color fastness of fabric pyrography printing, and can obviously reduce the film-forming drying and curing temperature of the adhesive at the same time.

The invention relates to the technical field of underwater curing sealants, in particular to an underwater curing polyurethane sealant and a preparation method thereof. The underwater curing polyurethane sealant is prepared from glue, dioctyl terephthalate, a wetting dispersant, a water removal agent, a thixotropic agent, filler, magnesium fluoride, carbon black and an ultraviolet light absorber, wherein the glue is prepared from the following raw materials in parts by mass: polyoxyethylene polyoxypropyl glyceryl ether, polypropylene glycol, bio-based polyol, isocyanate propyl triethoxy silane, diphenylmethane diisocyanate, a drier, a coupling agent, a de-foaming agent, a diluent and a latent curing agent. The underwater curing polyurethane sealant disclosed by the invention not only can be rapidly cured underwater, but also can rapidly form a stable bonding interface after being cured underwater to effectively resist permeation of water molecules, so that the long-term sealing effect and the structural stability are ensured.

The utility model discloses rapid curing equipment for a ceramic surface microstructure anti-skid and wear-resistant layer, which comprises a box body and a fixed gear ring arranged below the inner wall of the box body, and further comprises a transmission mechanism, the transmission mechanism comprises a movable supporting inner ring arranged in the box body, moving rollers are uniformly mounted at the bottom of the movable supporting inner ring, and the moving rollers are fixed on the box body. An inner gear ring is arranged on the inner wall of the movable supporting inner ring, gears are installed on the top of the movable supporting inner ring through evenly-arranged movable shafts, and a tray with a groove is arranged on the top of each gear. The inner gear ring is meshed with the driving gear, the movable supporting inner ring drives the tray to rotate in the box body, and meanwhile the tray rotates under the action of the gear and the fixed gear ring. The dual-rotation mechanism ensures that each surface of the ceramic workpiece can be uniformly irradiated by ultraviolet rays and heated by microwaves in the conveying process, so that the curing quality problem caused by non-uniform heating in the traditional curing equipment is avoided.

The utility model discloses an outer surface protective layer spraying device for artificial wood board processing, which comprises a device table body, a device frame body, a drying box, a liquid storage tank and a spraying pipe, the device frame body is fixed on the outer side of the device table body, the drying box is fixed on one side of the top of the device frame body, and the liquid storage tank is fixed on one side of the top of the device frame body. A first rack is fixed to the top, on one side of the drying box, of the device frame body, the spraying pipes are installed at the bottom end of the first rack, nozzles are installed at the bottom ends of the spraying pipes at equal intervals, the liquid storage tank is installed on one side of the top end of the device frame body, and a pump body is installed at the top end, on one side of the liquid storage tank, of the device frame body; the input end of the pump body is communicated with the liquid storage tank through a pipeline, and the output end of the pump body is communicated with the spraying pipe through a pipeline. According to the spraying device, the artificial wood board can be dedusted before spraying, the curing time of a protective layer is shortened, and the spraying efficiency and the spraying uniformity are improved.