205 results about "Thermal agent" patented technology

The invention discloses a high-heat-conductivity rubber composite material and a preparation method of the high-heat-conductivity rubber composite material. The high-heat-conductivity rubber composite material consists of the following ingredients in parts by mass: 100 of rubber, 4 to 6 of zinc oxide, 1 to 3 of stearic acid, 1 to 2 of anti-aging agents, 40 to 60 of carbon black, 1 to 1.5 of promoters, 1 to 3 of sulphur and 50 to 170 of heat conducting agents. The manufacture method comprises the following process steps that: the rubber is added into an open mill, the zinc oxide, the stearic acid, the anti-aging agents, the promoters, the carbon black and the heat conducting agents are sequentially added after the roll recovering, and finally, the sulphur is added. After rubber materials are uniformly mixed, the thin conduction is carried out, triangle bag packing and rolling are respectively carried out for five times, and the roll distance is regulated to 1.5mm for sheet output. The material sheets are placed into a mold, the vulcanization is carried out on a flat plate vulcanization machine, the vulcanization time is 15 to 20 minutes, the vulcanization temperature is 160 to 165 DEG C, and the vulcanization pressure is 10 to 12MPa. The material disclosed by the invention has an excellent physical and mechanical property and a high heat conduction factor.

The invention discloses a carbon composite high-performance thermal-conductive plastic and a preparation method thereof; the thermal-conductive insulating plastic is prepared from a resin basic material, a carbon composite material, a thermal-conductive agent, a coupling agent, an antioxidant and other processing agents; by means of the special crystalline structure of the carbon composite material added in the formula of the thermal-conductive insulating plastic disclosed by the invention, the inter-particle bridging effect is realized; a thermal-conductive passage composed of the thermal-conductive agent is more and more perfect; therefore, the thermal conductivity of the composite material can be rapidly increased; a filling material gathering and thermal-conductive passage is more and more perfect; simultaneously, with the help of the processes, such as a pre-mixing process, an extrusion process, a cooling process, an air drying process and a granulating process, the problems of being degraded in high filling property and low in thermal-conductive property of the plastic are solved; the thermal-conductive composite material having excellent mechanical property and good thermal-conductive effect and insulating property can be prepared; and the thermal-conductive composite material can be widely applied in the fields, such as electrons, automobiles and LED (Light Emitting Diode) lamps.

The invention discloses an inorganic phase-change material and a preparation method thereof. The inorganic phase-change material comprises at least one of a thickening agent and a water-retaining agent, and main thermit, nucleating agent, pH regulator, heat conducting agent, and water, wherein the main thermit is eutectic salt of sodium sulfate decahydrate and sodium hydrogen phosphate docecahydrate. The preparation method comprises the following steps: adding the main thermit in water, stirring in 40-45 DEG C water bath until completely fusing, adding the nucleating agent, the pH regulator, and the heat conducting agent and fully stirring to completely dissolve the nucleating agent and the pH regulator and uniformly disperse the heat conducting agent, then adding at least one of the thickening agent and the water-retaining agent and stirring to uniformly disperse the thickening agent or completely expanse the water-retaining agent, so as to obtain the inorganic phase-change material. The inorganic phase-change material of the invention has the characteristics of noninflammability and no toxicity, the phase change temperature is 21-27 DEG C, the latent heat of phase change is 214 kJ/kg, and the inorganic phase-change material has no attenuation of performance after 1000 weeks of the solidification-fusing cycle.

The invention discloses a highly heat-conductive polyphenylene sulfide (PPS) compound material and a preparation method thereof. The components by mass compounding ratio are 100 for polyphenylene sulfide, 50 to 150 for conduction agent, 30 to 100 for glass fiber, 0.5 to 5 for coupling agent, and 0 to 5 for other assistant. The producing method of the compound material involves the technique steps that: the first step is to mix the raw materials according to the proportion, and then the mixture is feed into a plastic twin-screw extrusion machine together with glass fiber added from a fiberglass door under the controlled temperature of 260 DEG C to 300 DEG C before the mixture is ready to be granulated to produce highly heat-conductive polyphenylene sulfide compound material. The materials of the invention have the advantages of good physical mechanical properties and highly heat coefficient.

The invention discloses a high heat-conducting wave-absorbing heat-dissipation composite material. The composite material is prepared by using 5-15 parts by weight of organic resin, 10-30 parts by weight of heat conducting agent, 50-70 parts by weight of magnetic powder, 1-10 parts by weight of 60-90% ethanol, 1-5 parts by weight of water and 1-5 parts by weight of dispersing agent. The heat conducting agent having excellent heat transferring property is compounded with the organic resin, and therefore the heat transferring and heat dissipation properties of the matrix material of the composite material are improved; the wave absorbing property of the system is improved due to the use of the ferrite wave absorbing material having the characteristics of high absorbed frequency, high absorptivity, thin matching thickness and the like; and the high heat-conducting, wave-absorbing heat-dissipation composite material disclosed by the invention has high absorptivity to electromagnetic wave in wider frequency bands, and has the properties of light weight, temperature resistance, moisture resistance, corrosion resistance as well as good heat conducting property.

The invention provides a preparation method of a Bi2Te3 dimensional nano tablet. The preparation method comprises a step of subjecting a Bi2Te3 nano material, water, and functional ligand molecules to ultrasonic exfoliation so as to obtain the Bi2Te3 dimensional nano tablet; wherein the functional ligand molecule is polyvinylpyrrolidone, cytochrome C, or bovine serum albumin. In the preparation method, the functional ligand molecule is taken as the stripping agent to carry out ultrasonic exfoliation on a Bi2Te3 nano material so as to obtain a functional ligand molecule-Bi2Te3 dimensional nano tablet with high water solubility; and the dimensional nano tablet has the advantages of uniform particle size, controllable morphology, high water solubility, good biocompatibility, and high photo-thermal conversion efficiency, is a good photo-thermal agent, and can be applied to tumor photo-thermal therapy. The provided preparation method can synthesize massive water-soluble Bi2Te3 with a photo-thermal property, the preparation process is simple, the cost is low, and the preparation method is suitable for industrial production.

The invention relates to a MRI (magnetic resonance imaging)-guided targeted photo-thermal agent and a preparation method of a chemotherapeutic system of the MRI-guided targeted photo-thermal agent. The method comprises the following steps: by using a hydrothermal method, preparing superparamagnetic ferroferric oxide nano-particles on PEI modified MoS2 in an in-situ preparation mode, thus obtaining a PEI modified MoS2 nano composite; preparing polyethylene glycol coupled targeting molecules by using EDC chemical; by using an EDC chemical, connecting polyethylene glycol with the targeting molecules to the PEI modified MoS2 nano composite in a covalent linkage mode; and through physical adsorption, loading a micromolecular anti-tumor drug on a carrier. The method disclosed by the invention is easy to operate and simple in step, and the prepared multi-functional MoS2 nano composite is good in biological compatibility, can be specifically gathered at tumor sites so as to effectively kill tumor cells, and can effectively integrate early diagnosis and late treatment so as to realize the integration of diagnosis and treatment of cancer treatment.

The invention provides a substrate-free pressure-sensitive acrylic thermal conductive adhesive. A thermal conductive agent is dispersed in a monomer solution, and the thermal conductive adhesive is formed by curing and cross-linking after in situ polymerization; the consumption ratio of the thermal conductive agent to the monomer is (1-4): (6-9); the thermal conductive agent consists of 75 to 90 percent of carbon fibers and 10 to 25 percent of carbon nano tubes; and the monomer is acrylic acid and/or acrylate. Because the thermal conductive agent of specific components is uniformly dispersed in the acrylic polymerization monomer to form a stable three-dimensional netlike thermal conductive structure, so that the thermal conductive adhesive is good in thermal conductive performance and good in environment friendliness. The thermal conductive adhesive can be applied between a light emitting diode (LED) light bar and an aluminum alloy profile, between the aluminum alloy profile and a back plate, between the LED light bar and the back plate or between a chip and a radiator, is used as a double-sided adhesive tape, and is used under the condition of a big gap between two contact faces of liquid crystal modules.

The present invention discloses a high temperature resistance high heat conduction PPS/PPO alloy and a preparation method thereof, and belongs to the technical field of polymer materials. The PPS/PPO alloy comprises the following raw materials, by weight, 20-50% of PPS, 8-10% of PPO, 5-8% of a toughening compatibilizing agent, 5-48% of a heat conduction agent, 20-30% of carbon fibers, 0.2-0.5% of an antioxidant, and 0.8-1.5% of a processing aid. The PPS/PPO alloy preparation method comprises: uniformly stirring the heat conduction agent, carrying out stirring mixing on the heat conduction agent and other raw materials (except the carbon fibers), adding the obtained mixture to a zone 1 of a twin-screw extruder (divided into 10 zones), adding the carbon fibers to a zone 10, and carrying out extrusion granulation, drying and injection molding to obtain the product. The high temperature resistance high heat conduction PPS/PPO alloy has characteristics of high heat conduction coefficient, high impact strength, good processing property and the like.

The invention discloses a photo-thermal chemotherapy bone repair material and a preparation method of a tissue engineering scaffold. The bone repair material includes an oil-soluble high-molecular material, bio-ceramic powder, an oily solvent, a water-soluble bioactive material, water, an emulsifier, a chemotherapy medicine, and a photo-thermal agent. The preparation method includes: according tothe bone repair material, preparing a W/O emulsion, and sending the W/O emulsion to an ink cartridge of a printer as printing ink; establishing a tissue engineering scaffold three-dimensional model onCAD software, setting printing parameters, regulating the temperature of a shaping chamber in the printer, and printing a tissue engineering scaffold prefabricated member, so that when solvent in theprefabricated member is volatilized naturally, a finish product of the tissue engineering scaffold is formed. The tissue engineering scaffold has good mechanical character, can simulate bone tissue structure, has excellent bone guidance and bone conduction and excellent photo-thermal effect and is toxic-free, and can promote recovery of massive bone defects caused by bone tumor resection.

The invention discloses a high-glossiness anti-scraping rapidly-formed polyolefin material which comprises, by weight parts, 20-90 parts of polyolefin A, 0-50 parts of packing, 0.1-1 part of antioxidant, 0-1 part of nucleating agent, 0.1-1 part of lubricant and10-80 parts of master batch. The master batch is formed by performing extrusion pelletization on, by weight parts, 10-90 parts of polyolefin B, 1-10 parts of nucleating agent, 10-90 parts of heat conducting agent and 10-90 parts of packing. The high-glossiness anti-scraping rapidly-formed polyolefin material has the advantages of being high in glossiness, resistant to scraping and short in molding cycle.

A water activated lithium battery cell having a thermal agent component for warming up cell components upon deployment. Also a water-activated battery system that is adapted to operate in and/or on the surface of a waterbody (i.e., a body of water including those which are natural or man made). In various embodiments the battery system comprises an operably breachable hermetic enclosure and at least one lithium battery cell having an open-cathode architecture, the lithium cell disposed inside the hermetic enclosure and therein maintained in an open ionic circuit condition (i.e., an inactive state) throughout battery system storage. Moreover, optionally, a thermal agent may be disposed inside the hermetic enclosure for warming up one or more battery cell components, the agent typically water activated, which is to mean that it (the thermal agent) evolves heat by reacting with water.

The invention discloses a preparing method of pitch-based spherical activated carbon with high heat conductivity. The preparing method comprises the steps of: uniformly mixing high soften point asphalt, naphthalene with a heat conduction agent, and reacting the mixture to prepare modified asphalt; adding modified asphalt into aqueous polyvinyl alcohol, and stirring for 0.5-3 h at 85-150 degrees centigrade to prepare pitch-based spheres; oxidizing and activating pitch-based spheres without dissolving to prepare pitch-based activated carbon spheres; placing pitch-based activated carbon spheres and a nitrogen-containing compound into a high-pressure kettle according to the mass ratio of 1: (0.1-0.3), sealing the kettle, heating the kettle to 150-300 degrees centigrade with the rate of 3-10 degrees centigrade/min, keeping the kettle for 0.5-3h at constant temperature and then cooling the kettle to prepare pitch-based spherical activated carbon. The pitch-based spherical activated carbon has the advantage of excellent heat conductivity.

The invention discloses a preparation method of a clean composite photo-thermal agent with excellent photo-thermal effect; the preparation method includes the following steps: taking dopamine hydrochloride (DA) as a reaction monomer, taking water-soluble alcohol and deionized water as a mixed solvent, adding a proper amount of stronger ammonia water to adjust the pH of the solution, and then carrying out oxidation self polymerization full reaction to prepare polydopamine (PDA) nanoparticles having uniform particle size; dispersing the obtained PDA nanoparticles in a proper amount of deionized water to obtain a dispersion liquid, then mixing with a bivalent copper salt solution, and undergoing a complex reaction, to prepare a PDA-Cu<2+> complex; taking the obtained solution as a seed liquid, adding sulfide as a sulfur source, carrying out a full reaction under certain conditions, preparing composite microspheres with CuS loaded on PDA, then dialyzing to filter out unreacted small molecules, and thus obtaining a dispersion liquid of composite microspheres. The photo-thermal effect of the synthesized material is improved, moreover, the synthetic method is green, and the product is clean; meanwhile, the preparation method has high repeatability of experiments and is easy for subsequent promotion and application.

The invention mainly relates to a heat conducting double sided tape and a preparation process thereof. The heat conducting double sided tape comprises two release paper layers and a heat conducting layer, wherein the release paper layers respectively cover the front and back faces of the heat conducting layer, and the heat conducting layer comprises the following components in percentage by weight: 55-85% of acrylic polymer, 10-20% of graphite, 1-10% of boron nitride, 1-10% of aluminum nitride and 1-10% of aluminum oxide. The graphite, boron nitride, aluminum nitride and aluminum oxide powders are uniformly dispersed in the acrylic polymer. According to the heat conducting double sided tape provided by the invention, by adopting the acrylic polymer as heat-conducting glue and mixed power of the graphite, boron nitride, aluminum nitride and aluminum oxide as a heat conducting agent and controlling the proportion and grain size distribution of the heat conducting glue and the mixed heat conducting agent and the distribution manner of the heat conducting agent in the heat conducting glue, the heat conductivity of the heat conducting double sided tape is improved. The heat conducting double sided tape provided by the invention is good in heat conducting property.

The present invention discloses a high-temperature resistance and low-temperature resistance PBT heat conduction and heat dissipating material, which comprises the following raw materials by mass: 30-70 parts of a PBT resin, 10-25 parts of a toughening agent, 10-50 parts of a heat conduction agent, 0.2-1.0 part of an antioxidant 1010, 0.2-1.0 part of a phosphite antioxidant 168, 0.5-1.0 part of a surfactant, and 0.2-1.0 part of a lubricant. The preparation method comprises: 1) carrying out a surface modification treatment on a heat conduction agent with a surfactant; 2) uniformly mixing the obtained modified heat conduction agent and other raw materials; and 3) carrying out extrusion granulation through a twin-screw extruder. The prepared heat conduction and heat dissipating material of the present invention has characteristics of low cost, excellent high-temperature resistance impact toughness, excellent low-temperature resistance impact toughness, excellent heat conduction property and excellent heat dissipating property, and can be widely used in LED illumination, electrics and electronics, communications, vehicles, electrical appliances and other fields requiring good heat conduction property and good heat dissipating property.

The invention provides a heat-conductive silica gel compound. The heat-conductive silica gel compound contains a heat-conductive agent, an organic silica gel and other auxiliaries, wherein the heat-conductive agent is composed of heat-conductive filler, multilayer graphene and a coupling agent; the content of heat-conductive filler in the heat-conductive agent is 75-86wt%; the content of multilayer graphene in the heat-conductive agent is 2-13wt%; the content of coupling agent in the heat-conductive agent is 1-2.4wt%. The heat-conductive silica gel compound is high in mobility and high in filling capacity. The prepared heat-conductive silica gel slice has higher thermal conductivity and low coefficient of thermal expansion. The invention also provides a preparation method for the heat-conductive silica gel slice and the heat-conductive silica gel slice prepared according to the method.

A wrap for applying thermal therapy to a body part includes a substantially liquid-tight, flexible polymer bag for containing a thermal agent which is attached to a wrap body formed from a non-expandable material. The bag is fastened to the wrap body such that the fastening area is 25% or less than the area of the bag. A pair of wings formed from an expandable, retractable material extends from each of opposite sides of the wrap body. Releasable fasteners are attached at the ends of at least two wings to attach to the ends of the opposite wings to secure the bag over the body part.

The invention discloses a nanometer golden flower which has a photothermal effect and can kill cancer cells, and a preparation method and application of the nanometer golden flower. The preparation method of the nanometer golden flower includes the steps that (1) nanogold is mixed with a Cl8N3 vesicle solution to form a nanogold/Cl8N3 vesicle compound solution, and (2) the nanogold/Cl8N3 vesicle compound solution serves as seeds and is added to a mixing solution of HAuCl4 and C18N3, reducing agent is added after the solution is evenly mixed, and chloroauric acid is enabled to carry out a reduction reaction to obtain the nanometer golden flower. The nanometer golden flower can absorb light in a near-infrared area, then rapidly converts the light into heat, rapid temperature rise is caused on the surfaces of nano-particles, and therefore the nanometer golden flower can serves as a photo-thermal agent to be used for photo-thermal treatment of tumors.

The invention discloses a heat-conductive electromagnetic-shielding polypropylene composite material and a preparation method of same. The composite material comprises, by weight, 40-60% of polypropylene resin, 5-10% of a toughening agent, 5-20% of a heat-conductive agent, 10-25% of an electric-conductive agent, 0.2-0.5% of an antioxidant, 0.5-1% of a lubricant, and 1-10% of a compatibilizer. Thepreparation method includes: premixing the polypropylene resin, toughening agent and compatibilizer, adding the antioxidant and lubricant, adding the heat-conductive agent and electric-conductive agent in a side-feeding manner, and performing extrusive granulation through a twin-screw extruder at 180-220 DEG C. The product is low in cost and light in weight, has excellent mechanical performance, is easy to shape, has great heat-conductive and electromagnetic-shielding properties, and can be extensively applied to the communication fields, such as electronics and telecommunications.

The invention relates to a collecting tube of a polymer-based solar collector, which is prepared and formed by adding thermal conducting agent and solubilizer to a polymer matrix, and then is plated with a light selectivity film. The collecting tube has more significant heat collection effect and longer service life so that the solar collector has better heat collection efficiency and heat insulation effect. An optimized collecting tube formula ensures better light and oxygen aging resistance and better heat collection effect of the collector.

The invention discloses a heat-conducting flame-retardant polyethylene terephthalate composite, which comprises, by weight, 30-50 parts of polyethylene terephthalate, 20-40 parts of heat-conducting agent, 12-15 parts of flame retardant, 6-8 parts of flame retardant synergist, 5-10 parts of flexibilizer, 0.5-2 parts of coupling agent, 0.3-0.5 part of antioxidant and 0.5-1 part of processing aid. The composite made by the preparation method has excellent heat conductivity and flame retardancy and further has fine mechanical property, and is widely applicable to electronic and electrical components having high requirement for heat dissipation, and applicable range of PET (polyethylene terephthalate) in fields of electronics, electrical appliances, automobiles, home appliances and the like is widened.

The invention provides a powdery coating. The powdery coating is characterized by comprising the following compositions in parts by mass: 25-30 parts of epoxy resin, 25-30 parts of weather-resistant resin, 25-35 parts of modified resin, 1.5-2 parts of high-heat-conducting agent, 5-15 parts of curing agent, 5-10 parts of filler and 3-5 parts of pigment; and in addition, the invention further provides a production technology of the powdery coating. The production technology comprises the following steps: a stirring process: stirring through material mixing equipment so as to fully mix the raw materials; feeding the raw materials into an extruder and melt-extruding; and crushing and tableting and grinding into powder, and mixing in a high-speed mixer. The heat-radiating mechanism of the powdery coating and the effect of spraying the powdery coating onto metal can be improved, the corrosion resistance performance can also be improved, and the powdery coating can be widely applied onto automobile industry, especially on an engine. The powdery coating is simple in formula, convenient to operate, and beneficial to production, so that the production efficiency is improved, the production cost is lowered, and the environment pollution is reduced.