939 results about "Paraffin wax" patented technology

The invention discloses a mechanical polishing pad with a CMP composite groove and a preparation method of the mechanical polishing pad, and belongs to the technical field of polishing pads. The mechanical polishing pad comprises a polishing layer, a bonding layer and a substrate layer, and the polishing layer is bonded to the surface of the substrate layer through the bonding layer; the bonding layer is prepared from the following raw materials in parts by mass: 47 to 50 parts of EVA resin, 35 to 36 parts of tackifier, 8 to 12 parts of paraffin, 3 to 7 parts of filler and 0.5 to 2 parts of antioxidant. The mechanical polishing pad solves the problem that when an existing mechanical polishing pad is used, a groove of the mechanical polishing pad cannot well convey polishing liquid, the mechanical polishing pad cannot be well supported, and the mechanical polishing effect is poor. The polishing liquid conveying performance of the mechanical polishing pad can be improved, the mechanical polishing pad is prevented from deforming during polishing, it can be guaranteed that polishing pressure is evenly transmitted, the size stability and the compression permanent deformation resistance of the mechanical polishing pad can be improved, and the mechanical polishing effect can be effectively improved.

The utility model relates to the technical field of paraffin oil cooling of pill dropping equipment, and discloses paraffin oil cooling circulation equipment which comprises a paraffin oil box, a cooling tank, a cooling machine and a circulating pump, the paraffin oil tank is provided with a first oil outlet pipe, a first oil inlet pipe, a second oil outlet pipe and a second oil inlet pipe; the first oil outlet pipe and the first oil inlet pipe are respectively configured to be communicated with two ends of a cooling pipe in the pill dropping machine; a cooling pipeline is arranged in the cooling tank, the bottom of the cooling tank is provided with an oil inlet end and an oil outlet end which are communicated with the two ends of the cooling pipeline respectively, the oil inlet end is communicated with the second oil outlet pipe through a pipeline, and the oil outlet end is communicated with the second oil inlet pipe through a pipeline; the input end and the output end of the cooling machine are both communicated with the cooling tank; and the circulating pump is arranged on a pipeline between the second oil outlet pipe and the oil inlet end of the cooling tank. The paraffin oil cooling circulation equipment provided by the utility model can solve the problem of how to improve the heat dissipation efficiency of the paraffin oil.

The invention relates to the technical field of microcapsule encapsulation, and a novel preparation method is adopted to prepare microcapsule perfume. The microcapsule takes natural gelatin and paraffin as composite wall materials, a gradient structure is formed by optimizing the mass ratio (1: 2.5-1: 3.75), the gelatin provides mechanical support, and the paraffin endows hydrophobicity and thermal control release characteristics. Dissolving a solution in which the mass volume ratio of gelatin to water is (1: 2.5)-(1: 3) under an ultrasonic condition; mixing the molten paraffin with the liquid spice and the emulsifier to form an oil phase; the oil phase and the gelatin solution are mixed through magnetic stirring at the rotating speed larger than or equal to 800 rpm till the solid phase and the liquid phase are completely fused; after cooling and curing, separating to obtain the solid microcapsule. And when the temperature reaches the melting point (45-65 DEG C) of paraffin, the wall material is molten and quickly releases the perfume, and the slow release performance is excellent at normal temperature. The material is wide in application field and high in compatibility, and has the advantages of being green, safe, high in environmental stability and controllable in trigger release.

The invention discloses a phase-change material loaded steel fiber as well as a preparation method and application thereof, and belongs to the technical field of concrete preparation. Paraffin and the like are used as phase-change materials, the phase-change temperature of the phase-change materials is well matched with the peak value of hydration heat of concrete, a large amount of heat can be absorbed in the hydration process of the concrete, the internal temperature rise of the concrete is effectively reduced, the temperature stress is reduced, and cracks are inhibited; the steel fiber loaded with the phase-change material is subsequently doped into the concrete according to the doping amount of 40-60kg / m < 3 >, and the reinforcing effect of the steel fiber and the temperature control effect of the phase-change material have a synergistic effect, so that the strength and toughness of the concrete are remarkably improved, and the concrete has better mechanical properties and durability; an innovative thought and an effective way are provided for preparation of a high-performance concrete material, and the method has a wide application prospect and huge economic benefits in the field of constructional engineering.

The invention relates to the field of coatings, and discloses a biomass-based oil-resistant coating and a preparation method thereof, the coating comprises an additive solution, a paraffin solution and gallic acid; the paraffin solution is obtained by dissolving paraffin in absolute ethyl alcohol; a preparation method of the additive solution comprises the following steps: mixing chitosan powder and an acetic acid aqueous solution to prepare a chitosan solution, ultrasonically dispersing functionalized montmorillonite in deionized water to prepare a suspension, then uniformly mixing the chitosan solution and the suspension, adding modified phytic acid prepared by grafting phytic acid and ethylene glycol diglycidyl ether, and stirring to react; the functional montmorillonite is prepared by modifying modified montmorillonite with titanium dioxide and zinc oxide, then activating the modified montmorillonite with 3-aminopropyltriethoxysilane and succinic anhydride, and then carrying out a ring-opening reaction with glycidyl neodecanoate. The coating prepared by the invention has high water resistance, the Kit oil-proof grade is kept at grade 12, and the oil-proof performance of the coating is greatly improved. Meanwhile, the antibacterial performance, the tensile index and the ultraviolet aging resistance are relatively high.

The invention relates to the technical field of phase change energy storage materials, in particular to a phase change wax composite material and a preparation method thereof. The phase change wax composite material is prepared from the following raw materials in parts by mass: 60 to 66 parts of modified paraffin, 4 to 6 parts of elastomer, 20 to 25 parts of modified heat-conducting filler and 6 to 9 parts of flame retardant. Through multi-scale interface design and component function cooperation, the performance bottleneck of a traditional phase change material is broken through, unification of high energy storage density, efficient heat management and long-acting safety is achieved, and the phase change material is particularly suitable for application scenes needing efficient energy storage and heat management.

The invention provides a phase change enhanced ablation-resistant modified liquid silicone rubber material as well as a preparation method and application thereof, and belongs to the field of advanced materials. According to the invention, paraffin is adopted as a phase change filler, so that the ablation resistance and heat insulation performance of the expanded ceramic liquid silicone rubber material are remarkably improved, and the prepared silicone rubber composite material has the advantages of low density, low ablation surface temperature, strong carbon layer and high heat absorption capacity. The phase-change reinforced modified expanded ceramic flexible ablation-resistant material further improves the ablation resistance and high-temperature heat insulation performance of a liquid silicone rubber material, and has a good application prospect in the fields of aerospace thermal protection, building heat insulation and the like.

The utility model relates to the field of belt tensioning, and discloses a novel belt tensioning mechanism for a paraffin forming machine, which comprises a fixing plate, a fixing groove is arranged on the front side wall of the fixing plate, the upper portion of the fixing groove is through, sliding strips are fixedly connected with the left inner side wall and the right inner side wall of the fixing groove, the sliding strips extend up and down, and a moving plate is arranged in the fixing groove. The moving plate is in sliding fit with the fixing groove, sliding grooves are formed in the left and right side walls of the moving plate and are in sliding clamping fit with the sliding strips, a fixing seat is fixedly connected to the middle of the top of the front side wall of the moving plate, and the top of the fixing seat is rotationally connected to the bottom of the lead screw. The vertical position of the tensioning wheel can be accurately adjusted by rotating the lead screw, so that the tightness of the belt is accurately controlled, the tensioning degree can be adjusted only by rotating the rotating rod, and the operation is simple and convenient.

The invention relates to the field of resource recycling, and discloses an iron slag ash and waste soil composite curing agent as well as a preparation method and application thereof. The composite curing agent comprises the following components in parts by weight: 30-50 parts of iron slag ash; 20 to 40 parts of waste soil; 10-20 parts of industrial alkaline residues; 5-10 parts of a functional auxiliary agent; 3-5 parts of a curing synergist; the curing synergist is composed of an inner core and a coating layer, the inner core material comprises a porous carrier and an exciting agent, and the film forming material of the coating layer is one or more of stearic acid, paraffin and polyethylene wax; the weight ratio of the core material to the coating layer material is (8-9): 1. According to the composite curing agent, resource utilization of waste is achieved, the material cost is remarkably reduced, and the composite curing agent is particularly suitable for flow-state backfilling, light filling and sludge in-situ curing and has remarkable environmental protection and economic benefits.

The present invention discloses a method for preparing a high-entropy carbide-based cermet, comprising the following steps: step one, preparing the cermet according to the molar ratio of the carbide additive phase, placing the powder in a sand mill, and first ball milling the cermet; step two, ball milling the cermet for the second time, adding a metal binder, carbon black, paraffin wax, rubber, or polyvinyl alcohol, and then ball milling the mixed carbide powder; after the ball milling is completed, the mixed powder is spray-dried; step three, pressing the powder into a shape at a pressure of 50-200 MPa; step four, degreasing and sintering the pressed green body to obtain a high-entropy carbide-based cermet. The present invention can obtain a flexural strength better than 2100 MPa and a fracture toughness better than 8.5 MPa·m 0.5 , Rockwell hardness better than 92.0, high entropy carbide-based metal ceramic materials can be widely used in bearing materials, cutting tools, mold materials and other fields.

A tamper for making paraffin blocks for histology may include a pliable tamper head and a handle. The handle may be permanently or removably attached to the tamper by using screws, magnets, or the like. The tamper may be made from a pliable material, such as a silicone rubber, with improved thermal transfer and high latent heat. In use, the tamper may be warmed in advance to a working temperature by placing the tamper on a hot plate of the embedding station or on a dedicated smaller hot plate. Alternatively, the tamper may be heated with an electric resistive element, a thermoelectric device, or an electric induction coil.

The invention discloses a self-repairing type phase change microcapsule and application thereof in a wood-based energy storage wall, the self-repairing type phase change microcapsule is characterized in that an inner core layer is composed of composite paraffin and butyl stearate composite phase change materials, gradient refractive index silicon dioxide microspheres are arranged on the surface of the inner core layer, and a middle shell layer is a composite film formed by polyurea and furan-epoxy monomer copolymer; the reinforced shell layer is of a three-dimensional network structure which is formed by nano SiO2 through a sol-gel method, has the porosity of 20-25% and is in gradient distribution; according to the invention, a three-dimensional network structure formed by a Diels-Alder dynamic bonding network of a middle shell layer and nano SiO2 of an enhanced shell layer is used for synergistically constructing a self-repairing system of the microcapsule, so that the self-repairing function of the phase change microcapsule material is realized, the defect of failure caused by physical damage of the microcapsule is avoided, and the service life of the phase change microcapsule material is prolonged. And meanwhile, through gradient packaging preparation of the inner core layer and the enhanced shell layer, the problem of thermal stress concentration is effectively solved.

The invention provides a thermal shock testing device, system and method for a SiC coating graphite piece. The thermal shock test device for the SiC coating graphite piece comprises a heating chamber, a transition chamber and a cooling chamber, wherein a moving mechanism for carrying the graphite piece and switching the graphite piece between the heating chamber and the cooling chamber is arranged in the transition chamber; an induction coil for heating the graphite piece is arranged in the heating chamber; the cooling chamber is used for spraying a cooling substance to the graphite piece, and the cooling substance is a mixture of liquid inert gas and silicon dioxide wrapped paraffin phase change microcapsules. The problems of insufficient upper limit of heating temperature, poor heating uniformity of special-shaped parts, water-cooling weight loss, ultrahigh-temperature heat loss of graphite parts and the like are solved.

The utility model provides a rotary type paraffin slicing device which comprises a bottom plate, a shell is fixedly connected to the upper surface of the bottom plate, a threaded rod is rotationally connected to the interior of the shell, a handle is fixedly connected to the outer wall of the threaded rod, a sliding block is in threaded connection to the outer wall of the threaded rod, a supporting shaft is fixedly connected to the outer wall of the sliding block, and the supporting shaft is fixedly connected to the outer wall of the sliding block. A slicing knife is fixedly connected to the outer wall of the supporting shaft, a sliding shaft is slidably connected to the interior of the sliding block, and a fixing assembly is arranged on the outer wall of the limiting block and used for fixedly clamping a paraffin block. According to the paraffin slicing device, the slicing knife can be driven to move through mutual matching of the handle, the shell, the threaded rod, the supporting shaft, the sliding block and the sliding shaft, so that paraffin blocks are in contact with the slicing knife, the paraffin blocks with different thicknesses and hardness can be supported to be sliced through the movable slicing knife structure, and the paraffin slicing device is suitable for various scientific research and clinical scenes.

An electronic candle includes: a wax tube, a battery compartment, and a PCBA board. The wax tube is cylindrical and made from paraffin wax. The wax tube defines a cavity therein and has a first end and a second end, the second end defines an opening communicated to the cavity. The battery compartment is inserted into the cavity from the second end, the battery compartment has a third end and a fourth end, the fourth end defines an opening facing towards the first end. The PCBA board is inserted to the fourth end. The PCBA board is elongated. A maximum width of the PCBA board is in an interference fit with an inner diameter of the battery compartment, enabling the PCBA board to be snapped with the battery compartment.

The invention relates to a water-based hot melt adhesive and water-based hot melt adhesive coating medical paper. The invention provides a water-based hot melt adhesive for a medical packaging material, which comprises 25-70 parts by weight of ethylene-vinyl acetate copolymer, 5-20 parts by weight of ethylene-acrylic acid copolymer, 6.5-55 parts by weight of water-based paraffin and 5-15 parts by weight of powder wax, and the particle size of the powder wax is less than 8 microns. A coating formed by the water-based hot melt adhesive on medical paper can have good air permeability. After the periphery of the coating and the flexible sheet or the blister container are sealed, the coating has good sealing strength and peelability.

The invention relates to the technical field of ink, in particular to high-stability digital discharge printing ink-jet ink and a preparation process thereof. The high-stability digital discharge printing ink-jet ink is prepared from the following raw materials in parts by weight: 60-80 parts of a solvent, 10-20 parts of a discharge agent, 2-4 parts of filler, 1-3 parts of a humectant and 0.4-1 part of an active agent. According to the invention, sodium alginate is used as natural anionic polysaccharide, nano calcium carbonate in the filler can be wrapped through hydrogen bonds and electrostatic interaction by using hydroxyl and carboxyl contained in a molecular chain of sodium alginate to form composite structure microspheres, and Span 80 and paraffin can further modify the surface morphology of the microspheres by using hydrophobic interaction of Span 80 and paraffin; after the ink is dried, the composite structure microspheres can be combined with ink components, a continuous film is formed on the surface of a fabric, nano calcium carbonate and adsorbed pigment molecules are fixed, damage of external factors to pigments is isolated, the coloring life is prolonged, and therefore the stability of the digital discharge printing ink-jet ink is improved.

The invention provides a sand washing temporary plugging agent and a preparation method thereof, and belongs to the technical field of oilfield chemistry. The sand washing temporary plugging agent comprises bridging particles and a filling material, and the bridging particles are of a core-shell structure and comprise from inside to outside an inner core formed by a compression-resistant material; the inner shell is formed by thermosetting resin and a curing agent, and materials in the inner shell can be continuously cured and bonded into a whole under the temperature condition of a target stratum; the melting point of the paraffin is lower than the temperature of the target stratum; the shell is formed by calcium carbonate and a disintegrating agent; and the waterproof protective shell is formed by calcium carbonate. According to the bridging particle, the shell and the waterproof protective shell are both brittle calcium carbonate shells, are combined into a whole and are easy to break when bearing external pressure, the shell is added with the disintegrating agent, and can rapidly absorb water to swell after meeting water, so that the shell and the waterproof protective shell are broken into fragments together, a seepage channel of a temperature-sensitive bonding material among particles is increased, and the temperature-sensitive bonding material is not prone to cracking. And the loading capacity of the solidified integrated structure is enhanced.

The invention relates to an in-situ three-dimensional skeleton based on a powder coating method, a high-thermal-conductivity interface material of the in-situ three-dimensional skeleton and a preparation method and application of the high-thermal The in-situ three-dimensional heat-conducting network is prepared by mixing a three-dimensional framework material, a template sacrificial agent, a permanent binder and a thermal degradation catalyst in proportion, extruding and granulating, and then carrying out heat treatment. Then, polydimethylsiloxane, polyethylene glycol or paraffin and the like are used as polymer matrixes to be mixed with aluminum powder or aluminum oxide, the mixture is immersed into the in-situ three-dimensional heat-conducting network through an impregnation method for curing, and the thermal interface material of a double-heat-conducting-network skeleton structure is prepared. The double-heat-conduction network structure obviously improves the heat conduction effect of the thermal interface material, the thickness of the formed high-heat-conduction material is controllable, and the contact thermal resistance is effectively reduced. The introduction of the double-heat-conduction network skeleton structure reduces the interface thermal resistance to obtain the high-heat-conduction interface material, and the material is simple in preparation process, low in cost, recyclable and suitable for large-scale industrial production.

The utility model discloses a steel beam bolt with an anti-loosening function, which comprises a hexagon nut, the top of the hexagon nut is fixedly connected with a fixed wedge-shaped ring, the top of the fixed wedge-shaped ring is fixedly connected with a screw rod, a channel is arranged in the screw rod, a glue blasting bead is arranged in the channel, and the glue blasting bead is fixedly connected with the screw rod. A flow dividing hole is formed in one end of the screw rod, a wedge-shaped gasket is arranged outside the screw rod, the outer wall of the screw rod is in threaded connection with a fastening nut, and the outer wall of the screw rod is in threaded connection with an anti-disengaging nut. According to the steel beam bolt with the anti-loosening function, the channel is filled with the paraffin filler, the chemical characteristic that paraffin melts after being heated is adopted, the glue blasting bead enters the connecting gap of the screw along with melting of the paraffin, the coating of the glue blasting bead is heated to be dissolved, and therefore threads and the connecting gap are filled, and the anti-loosening function is achieved. And in combination with a paraffin solution, a tight filling layer is formed between the threads, so that strong adhesive force and vibration resistance are provided.

The invention relates to a hot-melt pressure sensitive adhesive composition comprising at least one styrenic block copolymer, at least one tackifying resin, at least one mineral oil and from 4 to 15% by weight of at least one wax selected from the group consisting of paraffin waxes, Fischer-Tropsch waxes, ethylene-vinyl acetate waxes and any mixture thereof, based on the total weight of the hot-melt pressure sensitive adhesive composition. The invention also relates to an article comprising a surface coated with such a hot-melt pressure sensitive adhesive composition, to a use of such a hot-melt pressure sensitive adhesive composition and to a process for preparing such a hot-melt pressure sensitive adhesive composition.

The invention discloses an intelligent temperature control health care patch and a preparation method thereof, and belongs to the technical field of medical instruments. The health care patch comprises a surface layer (a CO2 laser drilling PET film and a fluorosilane coating), a temperature control layer (paraffin / mesoporous silica composite phase change material), a medicine layer (wormwood essential oil-paraffin / sodium alginate microcapsules) and a bonding layer (silicone adhesive / hydrogenated castor oil). Ventilation and sweat prevention are achieved through the laser micropores and the hydrophobic coating, the phase change material composite system provides + / -1.4 DEG C temperature control precision, and the 48-hour medicine volatilization loss rate is only 3.2%. The preparation method adopts vacuum impregnation, low-temperature crosslinking and gradient curing processes, and interlayer bubble-free combination and efficient production are realized. The product has thermal therapy accuracy, medicine long-acting slow release property and skin adaptability, and is suitable for the field of chronic pain and joint nursing.

The invention relates to the technical field of refrigerants, in particular to a quick long-acting passive condensing gel and a preparation method thereof.The quick long-acting passive condensing gel is prepared from, by mass, 2-40 parts of refrigerants, 1-20 parts of a phase change material, 0.1-3 parts of a thickening agent, 0.1-3 parts of a nucleating agent and a solvent, the phase change material is paraffin, and the phase change material is paraffin. The refrigerant, the phase change material, the thickening agent and the nucleating agent are weighed according to the proportion and mixed evenly, then the mixture is put into a container, the solvent is added into the container, the mixture is shaken evenly, and the mixture stands still, so that the refrigeration effect can be achieved. The passive long-acting refrigeration material containing the refrigerant, the phase-change material, the water-absorbent resin and the water can be started for cooling at any time without refrigeration and cooling in advance, the refrigeration effect is good, and the refrigeration duration is long.

The invention discloses an attached fireproof fire extinguishing pad which comprises a first fire extinguishing layer, a second fire extinguishing layer, a heat insulation layer and an adhesive layer which are fixedly connected in sequence. The first fire extinguishing layer and the second fire extinguishing layer are both composed of adhesives and fire extinguishing microcapsules, and each fire extinguishing microcapsule comprises a capsule shell composed of macromolecule resin, low-melting-point paraffin and expanded graphite and a perfluorohexanone capsule core packaged in the capsule shell. The content of an adhesive in the first fire extinguishing layer is high, and the content of fire extinguishing microcapsules is low; and the second fire extinguishing layer is relatively low in adhesive content and relatively high in fire extinguishing micro-capsule content. When in use, the fireproof fire-extinguishing pad is attached to a protective surface through the adhesive layer, and the first fire-extinguishing layer faces a fire position. When a fire occurs, the surface adhesive is heated and melted, the fire extinguishing micro-capsules are released, the micro-capsules are heated and blasted to release perfluorohexanone, and first-time rapid fire extinguishing is achieved. And if the fire behavior is continuous, the second layer is started immediately after the first layer is used up, and a larger dosage of fire extinguishing agent is provided for supplementary fire extinguishing, so that the reliability and continuity of fire extinguishing are remarkably improved.

The present invention relates to the field of oil and gas field chemistry, and in particular to a polymeric anti-wax pour-point depressant and a preparation method therefor. The present invention discloses a polymeric anti-wax pour-point depressant. A polymer in the polymeric anti-wax pour-point depressant comprises a structural unit A and a structural unit B, wherein in the structural unit A, R1 is C16-C22 alkyl; and in the structural unit B, R2 is C12-C22 alkyl. The polymeric anti-wax pour-point depressant provided by the present invention requires a small addition amount and shows a good anti-wax effect, and compared with conventional anti-wax agents, the polymeric anti-wax pour-point depressant can effectively inhibit precipitation of high-carbon-number paraffins in crude oil, greatly mitigates blockage of crude oil wellbores and transportation pipelines caused by paraffin deposition in crude oil, and has low construction costs and a simple field construction process.

The invention relates to a low-thermal-resistance phase change heat conduction material and a preparation method thereof, and belongs to the technical field of thermal interface materials. The phase-change-resistant heat conduction material comprises the following components in percentage by weight: 22 to 30 percent of porous BN-paraffin phase change agent, 8.5 to 10.2 percent of nano aluminum nitride, 3.5 to 4.1 percent of reactive diluent and the balance of room-temperature cured silicone rubber, according to the porous BN-paraffin phase change agent, porous BN serves as a carrier, phase change paraffin is packaged in pores, and compared with the prior art, the porous BN-paraffin phase change agent has the advantages that the pore wall of the packaged BN serves as a thermal bridge, the contact probability between the phase change agents is increased, rapid diffusion of heat in a composite material is promoted, phase change latent heat of the paraffin is fully released and conducted, and the phase change performance of the phase change agent is improved. Not only is the problem of paraffin leakage solved, but also the thermal resistance is obviously reduced.

The invention relates to the technical field of building heat preservation, in particular to a heat preservation structure for civil and architectural engineering construction, which comprises a heat preservation plate, the heat preservation plate is filled with a heat insulation core, the surface of the heat preservation plate is provided with a heat dissipation groove, the heat preservation plate is internally provided with a containing cylinder, and the containing cylinder is internally filled with paraffin. Building heat preservation and heat dissipation are achieved through the phase change characteristic of paraffin, the heat absorption plate absorbs heat in the daytime, the heat is transmitted to the paraffin in the containing cylinder through the heat conduction pipe, the paraffin is melted and expanded, the piston plate is pushed to move, the sealing plate is driven to descend, and the heat dissipation groove is opened; meanwhile, a spring pushes a piston plate to reset, a sealing plate ascends to seal a heat dissipation groove, heat loss is reduced, in addition, paraffin expansion drives a scraping plate to clean impurities on the surface of the heat absorption plate through mechanical transmission, and the heat absorption efficiency is improved.

The invention relates to the technical field of mine blasting, and discloses a high-temperature blasting drilling multi-layer thermal insulation charging device for strip mines, which comprises a multi-layer thermal insulation sleeve, a temperature monitoring module, an active cooling module and a quick release mechanism, the multi-layer thermal insulation sleeve comprises a phase change heat absorption layer, and an aerogel thermal insulation layer is fixedly mounted on the outer wall of the phase change heat absorption layer; a metal reflecting layer is fixedly installed on the outer wall of the aerogel heat insulation layer, the multiple layers of heat insulation sleeves are arranged, the high temperature of the external environment is effectively isolated through the multiple layers of structures of the multiple layers of heat insulation sleeves, internal explosives are protected against the influence of the high temperature, and the phase change heat absorption layer utilizes the phase change heat absorption characteristic of a paraffin-graphene composite material; a large amount of heat is absorbed and stored, temperature rise is effectively slowed down, the aerogel heat insulation layer further blocks heat transfer due to extremely low heat conductivity and excellent heat insulation performance, the metal reflection layer can effectively reflect solar radiation and heat radiation in the surrounding environment, and heat absorption is reduced.

The invention relates to the technical field of phase-change materials, and discloses a light-operated composite phase-change material catalyst and a preparation method and application thereof, and a light-operated phase-change composite material is a paraffin-encapsulated metal M / halloysite / sodium alginate composite phase-change material; according to the metal M / halloysite / sodium alginate composite phase change material for packaging the paraffin, halloysite / sodium alginate aerogel loaded by metal M nanoparticles is used as a supporting material, and the paraffin is packaged in the metal M / halloysite / sodium alginate composite phase change material. According to the invention, the metal M / halloysite / sodium alginate composite phase change material for packaging paraffin is prepared by using the halloysite nanotube, the aerogel in the invention has a relatively large paraffin encapsulation amount, the encapsulation efficiency can reach up to 86%, and the phase change material can still maintain good mechanical and chemical stability after multiple heat absorption and release cycles. The melting and solidification of paraffin in the composite phase change material are controlled by turning on and turning off the light source, and the exposure and shielding of active sites are realized, so that the catalytic reaction is accurately started and stopped, and the complete starting and pausing of the reaction are realized.

The invention discloses a corrosion-resistant cable material, an energy storage cable and a preparation method of the corrosion-resistant cable material, and belongs to the technical field of cables. The corrosion-resistant cable material comprises the following raw materials: a hexadecylamine functionalized graphene bentonite copolymer, modified epoxy resin E5, chlorinated polyethylene, a plasticizer, paraffin, mica powder and an antioxidant. The hexadecylamine functionalized graphene bentonite copolymer is obtained by adding acidified bentonite into a graphene dispersion liquid, stirring and then carrying out hydrophobic modification through hexadecylamine; the modified epoxy resin E51 and 5-aminosalicylic acid are subjected to a hydrothermal reaction to obtain nitrogen-doped quantum dots, the nitrogen-doped quantum dots are ultrasonically mixed with ethyl alcohol, then the waterborne curing agent is added, then the epoxy resin E51 is added, and high-speed stirring is performed to obtain the cable material, the cable material has good waterproofness, corrosion resistance and mechanical performance, and stable operation of an energy storage cable can be guaranteed.