557 results about "Heat curing" patented technology

The embodiment of the invention provides a UV (ultraviolet) thermal dual-curing adhesive and a preparation method thereof. The UV thermal dual-curing adhesive comprises the following components in percentage by mass: 30-55% of a photocuring prepolymer; 5%-25% of an active diluent monomer; 1%-10% of a photoinitiator; 1%-20% of a thermal initiator; 10%-40% of a filler; 0.5%-5% of a coupling agent; 1%-10% of a thixotropic agent; 1%-10% of pigment; 2%-8% of an auxiliary agent; wherein the photocuring prepolymer comprises epoxy resin. According to the UV thermal dual-curing adhesive and the preparation method thereof provided by the embodiment of the invention, the dual-curing adhesive with low shrinkage and low thermal expansion coefficient is obtained by optimizing the structure of the photocuring prepolymer and matching the components, and the prepared adhesive can be rapidly cured under the irradiation of LED 365nm ultraviolet light, or can be thermally cured under the low-temperature condition of 80 DEG C, so that the UV thermal dual-curing adhesive can be widely applied to the field of ultraviolet curing. The product can resist high and low temperature cycle impact of-50 DEG C to 140 DEG C, and has a good application prospect.

The invention relates to the technical field of polyurethane acrylate, and particularly discloses dual-curing polyurethane acrylate resin and a preparation method thereof. Wherein the dual-curing polyurethane acrylate resin is prepared from the following raw materials: polyester polyol, polyether polyol, diisocyanate, hydroxyl acrylate, a chain extender, a photoinitiator, cardanol glycidyl ether, a polymerization inhibitor and modified nanoparticles. Wherein the citric acid and the polyethyleneimine are adopted to carry out synergistic modification on the nano particles, the dispersion stability of the nano particles is improved, so that the mechanical property of the resin is improved, the cardanol glycidyl ether and the photoinitiator generate a synergistic effect, and the resin can be quickly shaped through photocuring promoted by the photoinitiator; the cardanol glycidyl ether participates in the subsequent thermocuring reaction, so that the curing effect is improved, and the adhesive force between the film layer and the base material is enhanced.

The invention discloses a preparation method of a composite micro-groove super-hydrophobic low-ice-adhesion photo-thermal film. The preparation method comprises the following steps: (1) constructing a low-elasticity-modulus photo-thermal composite sponge substrate through a solvothermal method; (2) uniformly coating the surface of a substrate with a polydimethylsiloxane (PDMS) precursor solution by adopting an aerosol-assisted deposition technology, and carrying out thermocuring to form a functional composite interface layer; and (3) constructing a multi-stage scallop surface-imitating micro-nano groove composite structure on the surface of the interface layer by using a femtosecond laser micro-nano processing technology. The prepared film has super-hydrophobicity, the surface of the film is in a Cassie-Baxter wetting state with a 164-degree contact angle and a 1-degree rolling angle, and the film has a surface self-cleaning function. Under the icing condition, the adhesion strength of an ice layer of the system is obviously reduced to 2.57 kPa, the static delay icing time is effectively prolonged to 1587 s, and the system has the photo-thermal response characteristic and can realize rapid icing ablation under the standard solar irradiance; the preparation method has the characteristics of high process controllability, environment friendliness and the like, and is suitable for large-scale continuous production.

Provided is a heat-curable acrylic resin composition which is capable of suppressing the generation of ultra-fine bubbles when cured under heat and pressure, and which has excellent adhesiveness. A thermosetting acrylic resin composition which contains (A) an acrylic copolymer having a carboxyl group and (B) a phenolic resin, and which is characterized in that: when the acrylic copolymer (A) is an acrylic copolymer (A-1) having a glass transition temperature of-35 DEG C or less, the phenolic resin (B) is a phenolic resin; the thermosetting acrylic resin composition contains a specific content of an epoxy curing agent (C-1), contains a specific content of a novolac phenolic resin (B-1) or a self-crosslinking phenolic resin (B-2) as the phenolic resin (B), and contains a specific content of a novolac phenolic resin (B-1) or a self-crosslinking phenolic resin (B-2) when the novolac phenolic resin (B-1) is contained as the phenolic resin (B). The thermosetting acrylic resin composition also contains a specific content of an amine curing agent (C-2).

The invention relates to the technical field of fluorosilicone materials, in particular to a glass fiber sleeve with an excellent voltage resistance function and a preparation method of the glass fiber sleeve. The glass fiber sleeve with the excellent voltage-resistant function comprises a glass fiber sleeve and a composite coating coated on the outer side of the glass fiber sleeve, the composite coating is obtained by thermocuring a coating material; the coating material is prepared from the following raw materials in parts by mass: 50 to 100 parts of fluorinated silicone rubber emulsion, 1 to 5 parts of bis (3-aminopropyl) terminated polydimethylsiloxane, 0.5 to 1.5 parts of furfuryl alcohol resin, 1 to 5 parts of epoxy resin, 1 to 5 parts of activated nano silicon dioxide, 1 to 3 parts of boron nitride nanowire, 1 to 2 parts of dopamine hydrochloride, 1 to 2 parts of dispersing agent and 10 to 30 parts of solvent. The invention can effectively ensure that the coating forms a compact cross-linked structure in the curing process, and can enhance the adhesive force of the coating, weaken the temperature difference between the surface and the interior, inhibit the heat accumulation effect and delay the degradation of the insulating property.

The invention discloses a micro-conductive polyimide coating diaphragm with an energy slow release function, the micro-conductive polyimide coating diaphragm comprises a porous base material and a composite coating coated on at least one side of the porous base material, the composite coating comprises the following components: a polyimide matrix and modified carboxylated carbon nanotubes, and the modified carboxylated carbon nanotubes are uniformly dispersed in the polyimide matrix; the porosity of the composite coating ranges from 40% to 60%, the average pore size ranges from 0.1 micrometer to 0.5 micrometer, the pore size is distributed in a gradient mode in the thickness direction, the pore size of the surface layer is smaller than or equal to 0.2 micrometer, and the pore size of the bottom layer is larger than or equal to 0.4 micrometer. The invention also discloses a preparation method of the micro-conductive polyimide coating diaphragm with the energy slow release function. Flame retardance is achieved through a gas phase-condensation phase synergistic mechanism, a three-dimensional conductive network is constructed, performance conflicts are avoided through in-situ polymerization chemical bonding, and dendrite blocking and ion transmission efficiency are both considered through gradient aperture design. And through the one-step spraying and thermocuring process, uniform attachment of the submicron coating is achieved, and the process is simplified.

The invention provides a photo-thermal dual-curing resin composition, a preparation method and application thereof and a damping elastomer, and relates to the technical field of elastic materials. The photo-thermal dual-curing resin composition is prepared from the following components in parts by weight: 45 to 65 parts of polyurethane acrylate oligomer, 4 to 8 parts of epoxy resin, 18.7 to 27.56 parts of diluting monomer, 1 to 1.4 parts of photoinitiator, 6 to 8.5 parts of curing agent and 2 to 2.4 parts of functional filler, wherein the polyurethane acrylate oligomer is prepared from the following components in parts by weight: 10 to 21 parts of soft oligomer, 20 to 30 parts of medium hard segment oligomer and 15 to 20 parts of hard oligomer. According to the resin composition, the damping performance of the material is remarkably improved, the photocuring forming efficiency and the thermocuring crosslinking depth are both considered, the whole system is smaller than or equal to 7500 mPa.s at the temperature of 20 DEG C, and the resin composition is suitable for the 3D printing process.

The invention belongs to the technical field of preparation of soft magnetic composite materials, and particularly relates to an insulation coating method and application of a soft magnetic powder material. The insulating coating method comprises the following steps: (1) uniformly mixing low-melting-point metal or alloy powder with silica sol, a silane coupling agent and a thermocuring resin glue solution to obtain coating slurry; and (2) uniformly mixing soft magnetic powder with the coating slurry obtained in the step (1), firstly performing hot-pressing curing molding at the temperature of 60-100 DEG C under a vacuum condition, and then performing hot-pressing sintering treatment at the temperature higher than the melting point temperature of low-melting-point metal or alloy powder and under an oxygen-containing atmosphere condition to obtain the insulated and coated soft magnetic powder material. According to the insulating coating method, the advantages of an organic material insulating coating method and an inorganic material insulating coating method are combined, the defects of the organic material insulating coating method and the inorganic material insulating coating method are overcome, and the stability and the insulating coating effect of the insulating coating layer are remarkably improved.

The invention discloses a forming processing method of a composite material gas cylinder, which comprises the following steps of: positioning and embedding a pre-processed metal valve seat into a cavity of an injection mold, and performing high-pressure injection molding to form a lining pre-formed body wrapping the metal valve seat; and transferring the liner preform to blow molding equipment for blow molding integrated molding to prepare the gas cylinder liner which is integrated with the metal valve seat in a weldless manner, zero in interface gap and high in bonding strength. The method comprises the following steps: calculating laying parameters of a composite gas cylinder winding layer by adopting a grid theory on the basis of a dry-method prepreg yarn principle, and obtaining a laying layer design scheme; laying a carbon fiber winding layer on the outer surface of the gas cylinder lining subjected to surface treatment according to a laying design scheme based on a dry-method prepreg yarn winding technology; and the high-pressure composite material gas cylinder product is obtained through cooperative treatment of heating curing and mold pressing. The problems that the precision requirement of a traditional technology is difficult to meet and labor cost is high are solved.

The invention belongs to the technical field of supporting films, and particularly relates to an acrylate pressure-sensitive adhesive, a supporting film adhesive tape, a preparation method and application. The acrylate pressure-sensitive adhesive is prepared from the following raw materials in parts by weight: 60 to 90 parts of acrylate soft monomer, 5 to 20 parts of polar functional monomer, 5 to 20 parts of high-Tg hard monomer, 0.1 to 0.5 part of initiator, 0.5 to 3 parts of polyfunctional thermocuring cross-linking agent and a proper amount of solvent. According to the acrylate pressure-sensitive adhesive disclosed by the invention, the acrylate pressure-sensitive adhesive which has the characteristics of low modulus and high cohesion microcosmically is prepared under a solution polymerization and thermocuring process through a specific'soft monomer-hard monomer-crosslinking agent 'formula system design. The pressure-sensitive adhesive macroscopically realizes the performance balance, which is difficult to realize at the same time, among adhesion, buffering and impact resistance.

The invention provides a carbon fiber induction heating closed-loop intelligent control system and method, and relates to the technical field of carbon fiber processing equipment, and the system comprises an unwinding device, a dipping device, a heating curing device, a winding device and a rack; the unwinding device, the dipping device, the heating and curing device and the winding device are all arranged on the rack; the unwinding device comprises an unwinding servo motor, an unwinding roller and a first guide roller; the dipping device comprises a dipping tank, a second traction roller and a first traction roller; liquid resin is contained in the dipping tank, and the dipping tank is used for carrying out resin coating and preliminary infiltration on carbon fibers; the heating and curing device comprises a shell, an iron core, a conductive roller, an insulating roller, a magnet exciting coil and a sensor group; the iron core, the conductive roller, the insulating roller, the magnet exciting coil and the sensor group are all arranged in the shell; the excitation coil is sleeved on the iron core; the insulating roller and the conductive roller are used for clamping carbon fibers; the winding device comprises a winding servo motor, a winding roller and a second guide roller.

The invention relates to the technical field of adhesives, discloses an adhesive composition with an extreme environment-resistant photo-thermal dual-curing structure, and solves the problems that in the existing photo-thermal dual-curing technology, a photo-curing network formed in the early stage has physical limitation on a later-stage thermal curing reaction due to the curing time sequence difference of first light and then heat, and the service life of the photo-thermal dual-curing structure is prolonged. According to the method, a latent heat curing agent is coated in a photolysis microcapsule, and a latent heat release agent of which the decomposition temperature is lower than the activation temperature of the curing agent is blended in a wall material of the microcapsule. Therefore, the problems of physical limitation and internal stress concentration caused by a previous photocuring network to a later thermocuring reaction in a traditional photo-thermal dual-curing adhesive are solved, and the long-term reliability of bonding is improved.

The invention discloses a polyurea composite coating based on MXene at carbon dots. The composite coating is prepared by heating and curing a polyurea composite elastomer based on MXene at carbon dots and an organic solvent, the polyurea composite elastomer based on the MXene (at) carbon dots is prepared by mixing a polyurea elastomer and MXene (at) carbon dot powder; the polyurea elastomer is prepared from the following raw materials: isophorone diisocyanate, poly (propylene glycol) bis (2-aminopropyl ether), isophthaloyl hydrazine and 4, 4 '-diaminodiphenyl disulfide through a two-step condensation polymerization reaction. Based on the synergistic effect of dynamic hydrogen bonds and flexible disulfide bonds of a self-repairing polyurea elastomer structure in the composite coating, the self-repairing characteristic of the composite coating is remarkably enhanced, meanwhile, a brick mud structure is formed through uniform embedding of MXene at carbon dots, and the mechanical strength, corrosion resistance, heat stability and rapid self-repairing capacity of the composite coating are greatly improved.

The invention discloses an aviation composite material paddle and a preparation method thereof, and the preparation method comprises the following steps: curing a carbon fiber prepreg by using a mold pressing process to prepare a carbon beam as a main bearing structure; a carbon beam and a light core material are used as internal supports through a three-dimensional weaving technology, a skin is formed through wrapping and weaving, and an integrated fiber prefabricated body is obtained; preparing a toughened resin system for RTM (resin transfer molding), wherein the toughened resin system comprises liquid resin capable of being thermally cured, a curing agent and a carbon nanotube subjected to surface chemical modification; and placing the fiber preform in a mold, closing the mold, injecting the toughened resin system into a mold cavity, curing, and demolding to obtain the aviation composite material paddle. According to the invention, the preparation of the composite material paddle with high surface precision, light overall weight and excellent impact toughness is realized, and the preparation method is good in process repeatability and suitable for batch production.

The invention discloses a full-tailing filling body enhanced carbon sequestration method based on bubble regulation and control, and belongs to the technical field of mine filling materials, and the method comprises the following steps: uniformly stirring raw materials; then carrying out ultrasonic treatment in cooperation with double-frequency ultrasonic waves to obtain full-tailing mixed slurry; and the full-tailing mixed slurry is subjected to pouring, damp-heat curing and carbon dioxide atmosphere curing, and the full-tailing filling body is obtained. Wherein except water, the raw materials comprise the following components in percentage by mass: 80% of tailings, 12% of cement, 2%-5% of nano SiO2, 1%-3% of nano ZrO2, 0.05%-1% of hydroxypropyl methyl cellulose, 0.1%-0.5% of an air entraining agent and 0.5%-1.5% of nano MgO; the air entraining agent is obtained by compounding an anionic surfactant and a protein natural foaming agent. According to the method, stable bubbles are formed through the synergistic effect of the air entraining agent / foam stabilizer, the nano ZrO2 is combined to enhance the interface and the nano SiO2 is combined to optimize the pore connectivity, and the nano MgO active component is supplemented, so that the synergistic improvement of high strength, high air permeability and efficient carbon sequestration of the filling material is realized.

The invention provides a mining polyurethane material for blocking spraying air leakage and a preparation method thereof, and belongs to the technical field of polyurethane. The preparation method comprises the following steps: carrying out surface treatment on a multi-walled carbon nanotube, mixing with porphyrin-Zn-MOF and polydopamine for modification to prepare a porphyrin-Zn-MOF polydopamine modified carbon nanotube, mixing with m-2DOPO-2NH2, reacting with KH560 modified nano silicon dioxide to prepare a modifier, mixing with polyether polyol and a catalyst, adding into water, adding a foaming agent and silicone oil, heating, stirring and mixing, transferring into a mold, carrying out heat preservation, and carrying out vacuum drying, so as to obtain a finished product. Adding diisocyanate, after foaming is completed and the temperature of the material is reduced to the room temperature, drying, heating and curing to prepare the mining polyurethane material for blocking spraying air leakage, adding the modifier into a polyurethane foaming system, so that the mechanical property and flame retardant property of the system are obviously improved, the antistatic property and the thermal stability are improved, the modifier can be uniformly dispersed in the system, and the flame retardant property and the antistatic property of the system are improved. And repeated spraying is avoided, the constructability is good, and wide application prospects are achieved.

The invention relates to a bi-component epoxy coating, a wire winding, a preparation method of the wire winding and an electric reactor. The bi-component epoxy coating comprises an epoxy prepolymer, an epoxy curing agent and a self-repairing microcapsule, wherein the self-repairing microcapsule contains an epoxy microcapsule and an amine microcapsule; wherein the amine microcapsule and the capsule wall of the epoxy microcapsule comprise polyurea, so that core liquid of the epoxy microcapsule and the amine microcapsule can be effectively preserved during primary thermocuring, and is not easy to flow out in advance. When the coating has cracks, bisphenol F diglycidyl ether in the amine microcapsules and aliphatic polyamine in the epoxy microcapsules can flow out and are gradually mixed, due to the high reaction activity of the aliphatic polyamine, secondary curing can be achieved without high temperature, microcracks can be repaired, further spreading of defects is prevented, and the service life of the coating is prolonged. And the long-term service capability of the self-repairing resin layer is effectively improved.

The invention discloses a preparation method and processing equipment for a carbon fiber rod body, and the preparation method is mainly characterized in that a heating curing adhesive is added into a release agent, a core mold coated with the release agent containing the heating curing adhesive has viscidity after being heated, and carbon cloth can be directly adhered to the core mold, so that the process of the carbon fiber rod body is simplified, and the production efficiency is improved. Convenience is provided for automatic production of the carbon fiber rod body; a core mold feeding device in the processing equipment is provided with a low-temperature heating furnace, in the core mold feeding process, heating curing glue on a core mold is heated and melted to have viscidity and can be smoothly bonded with carbon cloth in the subsequent process, a carbon cloth feeding device provides the accurately-positioned carbon cloth for a pasting and ironing integrated device, and the pasting and ironing integrated device pastes the carbon cloth and the core mold together. In the process, the carbon cloth backing paper is separated from the core mold, and the carbon cloth tube winding machine has the advantages of being high in automation degree, high in machining efficiency, easy to operate and the like.

To provide a thermosetting adhesive composition which has, after thermally cured, a low dielectric constant, a low dielectric loss tangent, a low temperature change rate of the dielectric loss tangent, and good bending resistance.SOLUTION: A thermosetting adhesive composition for bonding between substrates is provided, containing with respect to 100 pts.mass of the total of the thermosetting adhesive composition, 65 to 90 pts.mass of a styrenic elastomer, as crosslinking components, 5 to 20 pts.mass of (A) a modified polyphenylene ether resin having a radical polymerizable group at a molecular terminal, 4 to 10 pts.mass of (B) polybutadiene and / or polyisoprene having a weight average molecular weight of 10,000 to 50,000, a radical polymerization initiator, and an epoxy resin, wherein the total of the contents of the radical polymerization initiator, the epoxy resin and the epoxy resin curing agent is 10 pts.mass or less, a styrenic elastomer having a styrene ratio of less than 67% is contained as the styrenic elastomer, and the total of the content of the component (A) and the content of the component (B) is 25 pts.mass or less.SELECTED DRAWING: Figure 1

A dual-curing adhesive comprises multifunctional epoxy resin, thermal curing agent, photoinitiator, and a compound having an epoxy group and a radically-polymerisable group. The compound may be presen

The invention discloses a high-porosity low-thermal-conductivity cement aerogel plate and a preparation method thereof, and belongs to the technical field of preparation of aerogel materials. The method comprises the following steps: preparing nano water-saturated resin from sodium polyacrylate alkali-resistant water-absorbent resin, mixing the nano water-saturated resin with cement, silica fume and other raw materials, and performing strickling or spray layering molding and microwave heating curing to obtain a finished product. Through the synergistic effect of the nanometer sacrificial template and microwave curing, the porosity of the product is larger than or equal to 96%, the heat conductivity coefficient is smaller than or equal to 0.026 W / (m.K), the compressive strength is larger than or equal to 0.8 MPa, the problems that in the prior art, the porosity is insufficient, the heat conductivity coefficient is high, the period is long, and performance is difficult to consider are solved, the process is simple and controllable, and the method is suitable for large-scale application of building heat preservation.

The invention discloses a high-thermal-stability epoxy amine adduct, a single-component pouring sealant and a preparation process of the high-thermal-stability epoxy amine adduct, the high-thermal-stability epoxy amine adduct is prepared by reacting a single-epoxy compound containing a cyclic structure, aromatic polyamine and a double-epoxy compound containing a flexible chain segment according to a specific molar ratio, and the molecular structure of the high-thermal-stability epoxy amine adduct has rigidity, flexibility and latency; the single-component pouring sealant taking the addition product as a curing agent comprises epoxy resin, the addition product, inorganic filler, a silane coupling agent and the like, the pouring sealant can be stably stored at room temperature, a three-dimensional network structure formed after heating and curing is compact, and the pouring sealant has high glass transition temperature, high thermal decomposition temperature and excellent long-term thermal aging performance; and the epoxy resin is especially suitable for potting protection of electronic components with extremely high requirements on heat resistance and reliability.

The invention discloses a mechanical tough light-heat dual-curing bio-based coating and a use method thereof. The coating comprises a cellulose macromonomer grafted with double bonds, a castor oil-based monomer containing steric hindrance urea bonds, a diluent, a photoinitiator and diisocyanate. The application method comprises the following steps: mixing the materials, coating the surface of a base material with the mixed materials, curing under ultraviolet light, and then carrying out thermocuring. The castor oil is subjected to chemical modification to introduce steric hindrance urea bonds and chain-end double bonds, and the castor oil, the cellulose macromonomer grafted with the double bonds, the diluent, the photoinitiator and the diisocyanate are subjected to photo-thermal dual curing to form a coating on the surface of a base material, so that the mechanical strength of the coating is remarkably improved.

The invention belongs to the technical field of pressure-sensitive adhesives, and discloses a light / heat dual-curing acrylate pressure-sensitive adhesive and a preparation method thereof. The light / heat dual-curing acrylate pressure-sensitive adhesive is prepared from the following components in parts by weight: 10.8 to 20.8 parts of a hard monomer, 76 to 85 parts of a soft monomer and a diluent, 2.2 to 4.2 parts of a functional monomer, 1 to 2.1 parts of a photoinitiator, and 1.1 to 1.5 parts of a modified isophorone diisocyanate cross-linking agent and a trifunctional group cross-linking agent. The method comprises the following steps: carrying out photopolymerization on a hard monomer, a soft monomer, a diluent, a functional monomer and a part of photoinitiator to obtain a prepolymer; uniformly mixing the prepolymer, the modified isophorone diisocyanate cross-linking agent, the three-functional-group cross-linking agent and the remaining photoinitiator, coating, carrying out light curing, and carrying out heat curing, so as to obtain the pressure-sensitive adhesive. The pressure-sensitive adhesive provided by the invention has excellent comprehensive performance, and effectively solves the problems of easy migration, low curing rate, and poor aging resistance and temperature resistance of a traditional pressure-sensitive adhesive cross-linking agent.

Compositions for reinforcing substrates, reinforced panels manufactured from those compositions, and methods of manufacture are disclosed. A composition may be composed of a base resin binder, a reinforcing fiber, a toughener, a heat curing agent, a cure accelerating agent, a sagging resistance agent, and a reinforcing agent. A coating of this composition can be applied upon a substrate, such as a steel or aluminum substrate. By heating the coating such that the coating cures upon the substrate, a reinforced substrate may be produced. The substrate may be sized and configured as a panel so that it could be used as an automotive panel. The low density and strong characteristics of the cured coating may allow for thin, lightweight automotive panels to be produced which provide higher milage. Such panels may also be effective at reducing vibration-generated noise that may otherwise result from a thin automotive panel.

The present invention pertains to a curable perfluoropolyether adhesive composition that contains: (A) 100 parts by mass of a straight-chain perfluoropolyether compound that has at least two alkenyl groups in one molecule, and that has, in the main chain, a perfluoropolyether structure including a repeating unit represented by —CaF2aO— (where a is an integer from 1-6); (B) in an amount effective for curing, a fluorine-containing organohydrogenpolysiloxane having, in one molecule, at least two hydrogen atoms to which a silicon atom is bonded; and (C) a catalyzing quantity of a hydrosilylation reaction catalyst. The composition does not contain an organic solvent. This configuration makes it possible to provide: a curable perfluoropolyether adhesive composition with which can be achieved a cured product that has excellent heat resistance, weather resistance, water repellency, oil repellency, chemical resistance, solvent resistance, etc., and that is characterized in particular in that voids are not generated on the surface of a coating film in a heating step; and an adhesive and adhesive tape that include said cured product.

The invention provides a composite conductive film preparation method and a composite conductive film, a PDMS matrix, a multi-walled carbon nanotube, a conductive filler, an anionic dispersant and isopropanol are mixed according to a preset mass ratio to obtain a slurry with a steric hindrance structure; and processing the uniformly mixed slurry by using a mold and a thermocuring process to obtain the composite conductive film with high dispersity, biosafety and machinability.

The invention relates to the field of knitted fabric forming, in particular to a low-temperature formed knitted fabric forming process which comprises a scattering and tiling machine, a needling machine and a thermosetting device, the thermosetting device comprises two gluing vessels, two adjacent thermosetting working procedures and an extrusion roller set, and a plurality of heating rollers are arranged in each thermosetting working procedure; according to the device, the two thermosetting procedures are arranged, step-by-step gum dipping and secondary heating and curing are achieved through the cooperation of the two gluing dishes, when passing through the gluing dishes for the first time, the two gluing dishes and the two thermosetting procedures pass through the extrusion roller set in a staggered mode, and the knitted fabric wound on the knitted fabric roller penetrates through the gluing dishes, the thermosetting procedures and the extrusion roller set in a staggered mode. After the surface of the knitted fabric is soaked with thermocuring epoxy resin, the knitted fabric enters a first-stage thermocuring process and is pre-cured under the action of a heating roller, the initial rigidity is enhanced, then the knitted fabric enters a second gluing vessel again for glue repairing, the area with insufficient primary permeation is filled, the filling rate of the resin among fibers is increased, and the initial rigidity is improved. And then complete curing is carried out in a second thermosetting process.

The application belongs to the technical field of soft magnetic composite material preparation, and particularly relates to an insulation coating method for soft magnetic powder material and application. The insulation coating method comprises the following steps: (1) uniformly mixing low-melting-point metal or alloy powder, silica sol, silane coupling agent and hot curing resin glue solution to obtain coating slurry; (2) uniformly mixing soft magnetic powder and the coating slurry of step (1), and then performing hot-pressing curing forming at a temperature of 60-100 DEG C and under vacuum condition, and then performing hot-pressing sintering treatment under a temperature higher than the melting point of the low-melting-point metal or alloy powder and under an oxygen-containing atmosphere condition to obtain the insulation-coated soft magnetic powder material. The insulation coating method of the application combines the advantages of the organic material insulation coating method and the inorganic material insulation coating method, overcomes the respective defects, and significantly improves the stability and insulation coating effect of the insulation coating layer.