839 results about "Heat curing" patented technology

The invention discloses a method for rapidly preparing a hard carbon negative electrode material from a waste wind turbine blade, an obtained product and application, and the method comprises the following steps: putting the waste wind turbine blade into a mixed solution of acetic acid and hydrogen peroxide, heating for reaction, filtering after the reaction, and distilling filtrate to obtain degraded resin; and carrying out heating curing on the degraded resin to obtain cured resin, carrying out pre-carbonization on the cured resin, and then carrying out Joule heat high-temperature carbonization to obtain the hard carbon negative electrode material. According to the method, fibers and resin in the waste wind turbine blades are separated through one-step reaction by adopting a chemical recovery method, and the hard carbon negative electrode material is prepared by utilizing a Joule heating technology, so that the preparation period of the hard carbon negative electrode material is shortened, the energy consumption is reduced, and the application of the hard carbon negative electrode material in the sodium-ion battery has good application prospects. And the initial coulombic efficiency, platform capacity and total capacity of the prepared sodium ion battery can be simultaneously improved.

The invention relates to the technical field of pressure-sensitive adhesives, in particular to a high-temperature-resistant high-impedance pressure-sensitive adhesive, a supporting film and a preparation method of the supporting film. A styrene-butadiene-styrene block copolymer (SBS) is used as a main body material, an acrylic copolymer with high carboxyl content is grafted in a solvent in a thermal initiation mode, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained after the high-temperature-resistant and high-impedance pressure-sensitive adhesive is compounded with tackifying resin, a curing agent and an antioxidant, and after optical-grade PET is coated with the high-temperature-resistant and high-impedance pressure-sensitive adhesive, the high-temperature-resistant and high-impedance pressure-sensitive adhesive is obtained. According to the novel supporting film, the polarity of the SBS main body material is low, the excellent electrical insulation performance is provided, the supporting film body has the characteristic of high impedance, and therefore the requirement for high impedance of the supporting film in a copper bar friction experiment is met; in addition, after the acrylic copolymer with high carboxyl content is grafted, a large number of crosslinking points can be provided, and the overall crosslinking degree is greatly increased after thermocuring, so that the high-temperature modulus of the adhesive layer is improved, and the adhesive layer is endowed with the characteristic of high-temperature deformation resistance.

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 discloses a UV-CIPP material for pipeline repair and stress monitoring and a preparation method of the UV-CIPP material, and belongs to the technical field of intelligent materials. The preparation method comprises the following steps: respectively diluting MWCNT slurry according to a certain proportion; soaking the glass fiber in the dipping solution for a period of time, taking out and drying; coating two ends of the dried glass fiber with conductive silver adhesive, and pasting a copper electrode after curing; adding a thermal initiator into the ultraviolet curing resin; respectively preparing test pieces with different resin contents; and sequentially carrying out ultraviolet curing and thermocuring on the prepared test piece. The characteristics and advantages of the ultraviolet curing resin, the glass fiber and the resin material are combined, and the preparation problem of the ultraviolet curing composite material for repairing the intelligent pipeline, which does not influence the mechanical property of the material and can realize excellent monitoring capability, is solved.

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.

The present invention belongs to the technical field of flame-retardant epoxy resin materials, specifically DOPO-based triazine-bridged thiazole flame-retardant epoxy resin and a preparation method thereof, wherein the preparation method comprises: 1) reacting a nitrogen-containing five-membered heterocycle or a derivative thereof with p-hydroxybenzaldehyde to obtain an intermediate product I; 2) adding DOPO and a catalyst to the intermediate product I and reacting for 12 hours to obtain an intermediate product II; 3) reacting the intermediate product II with cyanuric chloride to obtain a DOPO-based triazine-bridged thiazole flame retardant; 4) uniformly mixing the obtained flame retardant with a bisphenol A epoxy resin; adding 4,4'-diaminodiphenylmethane after the temperature of the mixed liquid drops to 90°C, and finally obtaining a DOPO-based triazine-bridged thiazole flame-retardant epoxy resin through a thermal curing reaction. Due to the introduction of the DOPO-based triazine-bridged thiazole flame retardant, the epoxy resin material of the present invention has excellent flame retardant properties and mechanical properties.

The invention relates to the technical field of adhesives, in particular to a dual-curing UV tackifying adhesive and a product thereof. The dual-curing UV tackifying adhesive is prepared from the following components in parts by weight: 73 to 92 parts of acrylate copolymer, 6 to 25 parts of UV polyester resin, 0.4 to 1.7 parts of thermal curing agent and 0.3 to 1 part of photoinitiator. According to the dual-curing UV tackifying adhesive disclosed by the invention, the components are compounded, so that the adhesive can be endowed with relatively low and appropriate bonding strength in a thermocuring stage, the bonding and positioning requirements are met, and the dual-curing UV tackifying adhesive can be stripped from an adhered object and has excellent reworkability; and after positioning, the bonding force between the adhesive and the pasted object is increased through UV illumination, so that the pasting effect of the adhesive on the pasted object is ensured.

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 provides two-component low-hardness silicone rubber based on a vinyl silicone oil / silicon dioxide composite material and a preparation process of the two-component low-hardness silicone rubber. By introducing modified silicon dioxide, a photoinitiator and a platinum catalyst and combining a dual cross-linking mechanism of ultraviolet curing and thermocuring, rapid curing and uniform deep cross-linking of the silicone rubber are realized. And the modified silicon dioxide adopts a core-shell structure design, so that the compatibility of the filler and a matrix is improved, and the mechanical property and long-term stability of the material are effectively improved. The prepared silicone rubber has low hardness, high tensile strength, excellent high temperature resistance and self-repairing capability, and is suitable for the fields of electronic packaging, medical instruments, automobile parts and the like. The process is simple and convenient, the curing speed is high, the product performance is excellent, and the industrial application value is wide.

The invention relates to the field of powder coatings, and particularly discloses a slow-release coated heat-curable powder coating catalyst composition, a powder coating and a preparation method of the powder coating. The slow-release coated heat-curable powder coating catalyst composition comprises: i) a component A, which is an inner core coated object and comprises at least one basic catalyst capable of promoting the ring-opening reaction of epoxy resin, and i) a component B, which is an outer core coated object and comprises at least one basic catalyst capable of promoting the ring-opening reaction of epoxy resin; ii) a component B, which is a coated shell comprising at least one crystalline solid unsaturated polyester resin or a semi-crystalline solid unsaturated polyester resin; the component C is a coating medium and comprises at least one alkane wax.The low-temperature powder coating can be cured at the ultralow temperature, the curing temperature is as low as 90-120 DEG C, the storage time of the low-temperature powder coating is effectively prolonged, and the requirement of a normal powder coating process is met.

The invention discloses a dual-curing solvent-free high-temperature-resistant epoxy resin structural adhesive as well as a preparation method and application thereof. The structural adhesive comprises the following components in percentage by weight: 1.5-5% of a latent curing agent, 2-5% of a high-heat-resistant curing agent, 1-5% of nano filler, 0.1-0.3% of a curing accelerator and the balance of epoxy resin. By accurately screening epoxy resin monomers, optimizing a dual curing agent system and introducing the high-temperature-resistant nanofiller, room-temperature stability, medium-temperature rapid curing and gelling and high-temperature complete curing are realized, and the final heat-resistant temperature is greater than or equal to 300 DEG C. Through the synergistic effect of the epoxy resin, the medium-temperature curing agent and the high-temperature curing agent, the crosslinking stability at different temperature stages is ensured. In addition, through introduction of the inorganic nano filler, the high-temperature mechanical property and the heat-resistant stability of the material are further improved. The preparation method does not need to use a solvent, and the prepared epoxy resin structural adhesive has excellent heat resistance and mechanical strength and is suitable for the fields of high-temperature structural adhesives, aerospace composite materials, high-temperature-resistant coatings and the like.

The invention discloses a preparation method of a large-length-diameter-ratio thin-wall composite material tubular beam and the prepared tubular beam. The method comprises the following steps that S1, a foam core mold is prepared; s2, the foam core mold is sleeved with a tubular air bag, and vacuumizing is conducted; step S3, paving a prepreg sheet on the air bag; s4, integrally transferring the foam core mold and the air bag which are paved with the material sheets into a mold cavity of a metal mold; s5, high-pressure gas is inflated into the gas bag, and then the gas bag is sent into a drying oven to be heated, cured and formed; and S6, after curing is finished, mold opening is conducted, a product is obtained, air bag and foam core mold residues are extracted from the interior of the product, and therefore a tubular beam product is obtained. The problems that in a conventional metal male mold paving-vacuum bag forming-autoclave curing method, demolding is difficult, and due to mold deformation, the straightness of a product is out of tolerance, and the surface quality is poor are solved.

The invention discloses a continuous aramid fiber reinforced epoxy resin composite material and a preparation method thereof, and belongs to the technical field of composite materials. The composite material is obtained by heating and curing continuous aramid fibers modified by a benzoxazine-containing waterborne polyurethane emulsion sizing agent and epoxy resin, the waterborne polyurethane emulsion sizing agent containing benzoxazine is prepared from diisocyanate, long-chain diol, 2, 2-dimethylolpropionic acid, dihydric alcohol containing benzoxazine and triethylamine according to the molar ratio of 1: (0.1 to 0.5): (0.1 to 0.3): (0.3 to 0.4): (0.1 to 0.3) through reaction. The benzoxazine-containing waterborne polyurethane sizing agent is used for modifying the aramid fibers, and benzoxazine is crosslinked with the aramid fibers and the epoxy resin during ring opening polymerization, so that the interface bonding property between the aramid fibers and the epoxy resin can be remarkably improved, and the mechanical property of the composite material can be effectively improved; the application field of the aramid fiber composite material is expanded.

The present invention relates to a UV anti-viscosity tape and a preparation method thereof, and belongs to the technical field of adhesive tapes. The UV anti-viscosity tape comprises a first anti-viscosity adhesive layer and a second anti-viscosity adhesive layer, wherein the first anti-viscosity adhesive layer comprises 20-70 parts of an acrylic resin containing a carbon-carbon double bond, 0.4-2 parts of a photoinitiator, 0.01-0.1 parts of a thermosetting agent, and 50-100 parts of an organic solvent in parts by mass; the second anti-viscosity adhesive layer comprises 0.1-3 parts of an active diluent containing a carbon-carbon double bond, 20-70 parts of an acrylic resin containing a carbon-carbon double bond, 0.4-2 parts of a photoinitiator, 0.01-0.1 parts of a thermosetting agent, and 50-100 parts of an organic solvent in parts by mass; the weight average molecular weight of the acrylic resin containing a carbon-carbon double bond is 300,000-700,000; the glass transition temperature is ‑50°C to ‑10°C; and the carbon-carbon double bond content is 0.1-0.3 mmol / g. The anti-viscosity tape not only meets the requirement of convenient chip picking, but also solves the problem of chip contamination caused by separation of the anti-viscosity adhesive layer and the substrate.

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 films, and relates to an anti-dazzle anti-reflection anti-fingerprint film, which comprises a transparent support body, an anti-dazzle hardening coating and an anti-reflection coating, and the anti-dazzle hardening coating is obtained by coating and curing a coating liquid prepared from the following components in parts by mass: 1 to 40 parts of resin 1, 1.8 to 4.8 parts of resin 2, 0.75 to 3.25 parts of a photoinitiator and 0.3 to 1.75 parts of a thermal curing agent, the anti-glare coating is prepared from the following components in parts by weight: 0.75 to 4.75 parts of anti-glare particles, 0.25 to 1.25 parts of a flatting agent 1, 0.03 to 0.15 part of a flatting agent 2 and 44.05 to 76.12 parts of a solvent, the antireflection coating is obtained by coating and curing a coating liquid prepared from the following components in parts by mass: 0.47 to 1.8 parts of resin 2, 2.4 to 6.0 parts of resin 3, 0.12 to 0.75 part of a photoinitiator, 0.1 to 0.45 part of a thermal curing agent, 0.18 to 1.65 parts of a flatting agent 3, 0.56 to 2.4 parts of modified hollow silicon dioxide, 0.1 to 1.25 parts of a wetting dispersant and 85.7 to 95.74 parts of a solvent. According to the technical scheme provided by the invention, the anti-glare and low-reflection coating has good anti-fingerprint performance, coating adhesive force and friction resistance while having anti-glare and low-reflection performance.

The invention discloses a full-polyester whole-core flame-retardant conveying belt and a preparation method thereof, and relates to the technical field of conveying belts. The conveying belt comprises a three-layer structure, wherein the inner layer is a plasma-treated full-polyester fiber belt core, the middle layer is a polyurethane flame-retardant composite layer, and the outer layer is a maleic anhydride modified nitrile rubber layer. The preparation method comprises the following steps: carrying out argon plasma treatment on the belt core, drying, preparing waterborne polyurethane resin, a phosphate flame retardant, nano-montmorillonite, a silane coupling agent and carbodiimide into impregnation liquid, carrying out vacuum impregnation on the belt core, and carrying out thermocuring to form the polyurethane composite layer, and finally, mixing the maleic anhydride grafted and modified nitrile rubber with an aluminum hydroxide flame retardant, and covering and vulcanizing. Through plasma activation, interface chemical bonding and a synergistic flame-retardant system, the product has excellent flame retardance and mechanical strength, and meanwhile the problem that layers of a traditional conveying belt are prone to layering is solved.

The invention belongs to the technical field of high polymer materials, and particularly relates to a self-repairing paint surface protection film based on asynchronous curing. The self-repairing paint surface protection film comprises a UV curing layer, a thermocuring layer and a base film, the thermocuring layer is positioned between the base film and the UV curing layer; the thermocuring layer is prepared from the following components: Zn-MOFs (Metal-Organic Frameworks) modified polycarbonate polyol resin and isocyanate; the UV curing layer is prepared from the following components: a fluorine-containing acrylate oligomer, KH-560 modified nano TiO2 and a photoinitiator; furthermore, the thermocuring layer further comprises a microencapsulation repairing agent. Correspondingly, the invention further provides a preparation method of the self-repairing paint surface protection film based on asynchronous curing. Self-repairing and weather resistance of the protective film are compatible, the problem that a single curing coating or a traditional synchronous curing coating cannot give consideration to self-repairing, weather resistance, water resistance, stain resistance and mechanical properties is solved, the highest elongation at break is larger than or equal to 320%, and the elongation at break is remarkably improved compared with the elongation at break of a single thermocuring system.

The invention provides a hierarchical pore sound-absorbing microsphere, a preparation method thereof and a sound-absorbing device. The method for preparing the hierarchical pore sound-absorbing microspheres comprises the following steps: uniformly mixing a zeolite molecular sieve, an inorganic binder, a water-soluble polymer material, a coagulant and an inorganic solvent, and adjusting to acidity to obtain mixed slurry, the water-soluble polymer material having a thermal swelling characteristic; dropwise adding the mixed slurry into a hot oil column by using a liquid drop generator, and heating and curing to obtain composite microspheres; and calcining the composite microspheres to obtain the hierarchical porous sound-absorbing microspheres. The prepared hierarchical-pore sound-absorbing microspheres comprise rich micropores, mesopores and macropores, the air compliance of the microspheres can be obviously improved, air can enter and exit the micropores more smoothly and quickly, the actual use efficiency of the micropores is improved, and therefore the low-frequency response is improved; the hierarchical-pore sound-absorbing microspheres prepared by the method are good in sphericity degree and not prone to powder falling due to friction, the production cost is low, the method is easy to implement and operate, and industrial mass production is facilitated.

The invention discloses epoxy vinyl ultraviolet curing resin and a preparation method thereof, and belongs to the technical field of epoxy resin materials.The preparation method comprises the following steps that fluorine-containing alicyclic epoxy resin, thiol-alkene functionalized vinyl acid, coumarin modified styrene, a prepolymer, an active prepolymer and nanoscale dispersion liquid are sequentially prepared; and carrying out nano synergistic modification, thermal activation component introduction, gradient photo-thermal synergistic curing and super-hydrophobic surface optimization to obtain the epoxy vinyl ultraviolet curing resin. According to the invention, through ternary compounding of coumarin modified styrene, thiol-alkene functionalized vinyl acid and fluorine-containing alicyclic epoxy resin and synergistic effect of the three components and a gradient photo-thermal curing process, the problems of excessive cross-linking brittleness of a surface layer, insufficient curing and weak bonding of an inner layer, permeation of a medium along defects and the like are synchronously solved; systematic improvement of strength, cohesive force and corrosion resistance is achieved.

The invention discloses an intelligent hydrogen sulfide-resistant anticorrosive coating for a coal chemical industry pipeline and a preparation method, and belongs to the technical field of corrosion prevention of coal chemical industry pipelines. The coating is composed of a base material, a functional filler, an intelligent component and an auxiliary agent, the base material improves the mechanical property and chemical stability, the functional filler enhances the hydrogen sulfide corrosion resistance, and the intelligent components achieve the self-repairing function of the coating. The preparation method comprises the steps of microcapsule preparation, component mixing, ultrasonic dispersion, coating and thermocuring. The corrosion resistance of the coating is greater than or equal to 95% under the environment of 80 DEG C, 90% humidity and 1000ppm H2S, the adhesive force reaches grade 1, the tensile strength is 10-20MPa, and the elongation at break is 200-300%. The high-corrosion-resistance and self-repairing pipeline protection material has high corrosion resistance, self-repairing capacity and construction convenience, and is suitable for pipeline protection in a high-concentration hydrogen sulfide environment.

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 belongs to the technical field of anti-counterfeit labels, and discloses a PUF pattern with a buckling layered structure and a preparation method of the PUF pattern. The preparation method comprises the following steps: spin-coating PDMS on a substrate, heating and curing, carrying out plasma treatment to obtain a PDMS film, further spin-coating a PVA aqueous solution containing NaB on the PDMS film, drying, carrying out ultraviolet crosslinking to obtain a PVA / PDMS double-layer film, dropwise adding an ethanol aqueous solution under specific heat treatment conditions, and spin-coating PDMS for pattern protection to obtain a PUF pattern which has a buckling layered structure, and has the characteristics of high strength, good mechanical properties, good mechanical properties and the like. The layered structure is a completely self-assembled process and has the characteristics of uniqueness, randomness, identifiability, physical unclonability and high stability. The preparation method provided by the invention has the advantages of simple process, easily available raw materials and lower cost, can be practically applied in the anti-counterfeiting field, and has huge market value.

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 discloses a preparation method of multi-stimulus-response degradable thermosetting resin containing ketene ester groups, and the method comprises the following steps: carrying out thermocuring cross-linking reaction on a compound containing multifunctional acetoacetate and polyaldehyde to generate the degradable thermosetting resin. The multi-stimulus-response degradable thermosetting resin prepared by the method has excellent creep resistance and can be kept stable under long-time exposure at 120 DEG C. The multi-stimulus-response degradable thermosetting resin and the composite material prepared by using the thermosetting resin as the matrix bring a major breakthrough to the composite material industry, so that the multi-stimulus-response degradable thermosetting resin and the composite material are more suitable for application in extreme environments such as high temperature and high pressure; the application range of the material is expanded, and more innovation and development opportunities are expected to be brought to related fields.

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.