349 results about "Potassium titanate" patented technology

The invention relates to the field of friction materials, and discloses a high-reliability friction material for an electromagnetic brake and a preparation method of the high-reliability friction material. Raw materials of the friction material comprise benzoxazine, phenolic resin, butyronitrile rubber powder, modified basalt fibers, PBO pulp, ceramic fibers, plant fibers, carbon fiber powder, potassium titanate lamellar crystals, barite, light calcium carbonate, friction particles, wollastonite powder, aluminum-titanium powder, feldspar powder, aluminum oxide, zircon powder, garnet powder, crystalline flake graphite, artificial graphite, flexible graphite and composite metal sulfide. And polymer lubricating material micro powder. The friction material provided by the invention is suitable for a high-temperature and high-humidity environment, the stability of the braking performance of a brake is improved, and the phenomenon that the brake slips due to attenuation of braking torque is reduced.

The invention provides an aerogel-based heat-preservation, heat-insulation and waterproof composite coating material for a building outer wall and a preparation method thereof, and belongs to the field of building materials. Through hydrophobic modified silicon dioxide aerogel, a lightweight heat insulation frame is provided, and the waterproofness and compatibility are improved; the mechanical property and the crack resistance are enhanced through the modified potassium titanate nanofibers, and self-adaptive heat insulation is achieved; the thermoelectric effect, the wear resistance and the thermal regulation performance are optimized through plasma treatment and polyaniline coated tungsten carbide nanoparticles; the heat management performance, the crack resistance and the comprehensive heat insulation and waterproof capacity are improved through graphene oxide composite modified boron nitride; the flexibility, the hydrophobicity and the interfacial compatibility are improved through organic silicon modified bisphenol A epoxy resin; and the performance of the coating is optimized through the synergistic effect of the components.

The invention discloses an anti-pollution flashover coating with arc durability, which comprises the following components in parts by weight: 100 parts of hydroxyl-terminated polydimethylsiloxane, 10-25 parts of dimethyl silicone oil, 5-15 parts of a phosphorus flame retardant, 8-20 parts of white carbon black, 5-15 parts of modified mica powder, 15-30 parts of modified calcium carbonate, 10-20 parts of modified glass powder, 5-12 parts of aluminum hydroxide, 5-10 parts of 1, 3-butanediol, 5-10 parts of a flame retardant, 1-5 parts of an anti-aging agent, 1-5 parts of an anti-aging agent, and 1-5 parts of an anti-aging agent. The invention discloses a high-temperature-resistant coating which is prepared from the following components in parts by weight: 0.5-2 parts of 1, 2-bis (trimethoxysilyl) ethane, 5-10 parts of potassium titanate whiskers, 2-6 parts of color paste, 50-150 parts of a solvent, 3-10 parts of a cross-linking agent, 2-6 parts of a silane coupling agent and 1-5 parts of a catalyst. The invention also provides a preparation method of the anti-pollution flashover coating with arc durability. By introducing the modified mica powder, the modified glass powder and the modified calcium carbonate with specific particle sizes and reasonable gradation, the proportion of the filler in the base rubber is ensured, so that the modified mica powder, the modified glass powder and the modified calcium carbonate form a compact and firm ceramic high-temperature-resistant and arc-resistant layer after encountering high temperature of an arc; and the purpose of improving the arc durability is achieved.

The invention discloses a degradable PLA composite material and a preparation method thereof, and belongs to the technical field of polylactic acid materials, the degradable PLA composite material comprises the following raw materials by mass: 80-95 parts of polylactic acid, 5-15 parts of carboxyl-terminated hyperbranched polycaprolactone, 3-5 parts of potassium titanate whisker, 0.1-3 parts of an antioxidant, 1-5 parts of a compatilizer and 1-2 parts of an anti-hydrolysis agent. By compounding carboxyl-terminated hyperbranched polycaprolactone and polylactic acid, a large number of flexible chain segments are introduced into a polylactic acid matrix material, so that the problem of high brittleness of polylactic acid can be well solved; the potassium titanate whiskers are also added into the composite material, and the thermal stability and mechanical properties of the material can be improved due to the excellent strength and stability of the potassium titanate whiskers. And the potassium titanate whisker can be used as a nucleating agent to solve the problem that the crystallization property of the polylactic acid is reduced due to compounding of the carboxyl-terminated hyperbranched polycaprolactone, and the crystallinity of the polylactic acid composite material is improved, so that the heat resistance of the polylactic acid composite material is improved.

The invention discloses a flame-retardant heat-insulating silicone rubber composition, a flame-retardant heat-insulating material as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials, the flame-retardant heat-insulating silicone rubber composition comprises the following components in parts by weight: 100 parts of vinyl silicone rubber, 1-5 parts of hydrogen-containing silicone oil, 5-30 parts of vinyl modified potassium hexatitanate whiskers, 10-40 parts of hollow microspheres, 0.7-32 parts of a flame retardant and 0.6-9 parts of an auxiliary agent; the length-diameter ratio of the vinyl modified potassium hexatitanate whisker is 10 to 100. The vinyl silicone rubber is used as a matrix, under the combined action of the hydrogen-containing silicone oil, the vinyl modified potassium hexatitanate whiskers, the hollow microspheres and the flame retardant, the flame-retardant and heat-insulating effects of the composition are effectively improved, and the composition is very suitable for preparing a secondary battery, especially suitable for preparing a flame-retardant and heat-insulating pad of the secondary battery, and has a good application prospect. And heat radiation generated by thermal runaway high temperature of the secondary battery is effectively blocked, and the risk of thermal runaway is reduced.

The invention belongs to the technical field of titanium alloy processing raw materials, and discloses a process and equipment for purifying potassium fluotitanate. The purification equipment comprises primary cleaning equipment, recrystallization equipment and acid treatment equipment; the primary cleaning equipment comprises a primary cleaning tank and a first filter, a material inlet of the primary cleaning tank is connected to the K2TiF6 storage tank through a pipeline, a material outlet of the primary cleaning tank is connected to the first filter through a pipeline, a liquid phase outlet of the first filter is connected to the acid treatment equipment, and a solid phase outlet of the first filter is connected to the recrystallization equipment; the recrystallization equipment comprises a stirring heater, a second filter, a cooling crystallization tank and a third filter which are connected in sequence; the acid treatment equipment comprises an acid storage tank, a neutralization tank, a fourth filter and a distillation tower which are connected in sequence. According to the purification process and equipment disclosed by the invention, residual acid can be removed, the purity of the product is improved, harmful substances can be effectively recovered and treated, the pollution to the environment is reduced, and the economic effect of enterprises is improved.

A seamless flux-cored wire for 10CrNiCu steel for ships, applied to welding of continuous casting 907A steel for a main hull and composed of a low-carbon steel sheath and a flux core. The diameter of the wire is 1.0-1.4 mm; the filling rate of flux-cored powder is 14%-16%; measured as the mass percentage of the flux-cored wire, the flux core contains rutile, aluminum oxide, ferroboron, zircon sand, quartz, bismuth oxide, potassium titanate, sodium fluoride, electrolytic manganese, ferrotitanium, magnesium powder, manganese-silicon alloy, nickel powder, metal chromium, copper powder, and iron powder. The seamless flux-cored wire for 10CrNiCu steel for ships has the advantages of good welding performance, stable mechanical properties, good crack resistance, low diffusion hydrogen content, high moisture absorption resistance, excellent rust resistance, and the like. Also provided is a method for manufacturing the seamless flux-cored wire for 10CrNiCu steel for ships

The invention provides carbon fiber directionally-distributed high-thermal-conductivity airtight paste and a preparation method thereof, and belongs to the technical field of airtight paste. According to the invention, a high-efficiency heat-conducting network is constructed through the synergistic effect of various heat-conducting fillers, and the heat-conducting property, the mechanical property and the long-term stability of the composite material are remarkably improved; the potassium titanate whiskers are coated by silica sol and modified by a silane coupling agent to improve the interfacial compatibility and dispersity, and are uniformly distributed in a matrix to reduce interface defects; trimethyl hydroxyl phosphate and an epoxy reactive diluent are subjected to a synergistic reaction to prepare a functional auxiliary agent, so that the interface bonding force is enhanced, and the dispersity of the filler is optimized; metal salt and ethylenediamine tetraacetic acid are chelated, and polyethylene glycol 400 is introduced to form a flexible complex, so that the interface stability and the filler dispersion efficiency are improved; and the uniformity and continuity of the thermal conductivity network are optimized through the synergistic effect of the long and short carbon fibers and a directional arrangement strategy. The heat conduction efficiency, the mechanical property and the processing adaptability of the composite material are remarkably improved through the synergistic effect of various fillers and modification means.

The invention discloses a PPS high-strength temperature-resistant composite material, preparation thereof and application of the PPS high-strength temperature-resistant composite material in a humanoid robot. The composite material comprises the following raw material components: 35-55 parts by mass of polyphenylene sulfide, 20-40 parts by mass of a composite reinforcing agent, 2-8 parts by mass of a flexibilizer, 3-9 parts by mass of a conductive agent, 3-7 parts by mass of potassium titanate whiskers, 0.2-0.5 part by mass of a coupling agent and 0.1-1 part by mass of an antioxidant, and the composite reinforcing agent comprises more than two reinforcing agents with different forms and / or sizes. The obtained PPS high-strength temperature-resistant composite material is subjected to multi-scale enhancement and multifunctional modification on the basis of a PPS material, the performance limitation of an existing PPS material can be broken through, and powerful material support is provided for high-performance and intelligent development of humanoid robots.

The invention relates to the technical field of welding materials, and particularly discloses a high-temperature-resistant flux-cored wire containing rare earth elements and a preparation method of the high-temperature-resistant flux-cored wire. The high-temperature-resistant flux-cored wire containing the rare earth elements comprises a welding wire skin and a flux core. The flux core comprises the following raw materials of dehydrated rutile, dehydrated potassium feldspar, zircon sand, metal chromium powder, metal nickel powder, electrolytic manganese, ferrotitanium, ferro-aluminum, potassium cryolite, potassium titanate, sodium titanate, fine iron powder, yttrium-based iron alloy powder, atomized ferrosilicon, nitrided ferrochrome, bismuth oxide, auxiliaries and the balance reduced iron powder. The auxiliary agent is a mixture of a zirconium-iron alloy, a titanium-iron alloy and an aluminum-magnesium alloy. A specific alloy auxiliary is introduced into the flux core to protect stable transition of rare earth yttrium, yttrium and multiple components synergistically optimize the weld joint performance, 253MA heat-resistant steel is matched, slag and electric arc regulation and control components and a reasonable process are matched, and the welding quality of the welding wire is improved.

The invention discloses a green preparation method of a silicon-containing FeCo-based nano-alloy surface composite passivation film, which comprises the steps of pretreatment, passivation solution preparation, dipping film formation and post-treatment strengthening, and the passivation solution is a silane-tannic acid composite passivation solution; according to the step of dipping and film forming, the pretreated alloy is dipped into a passivation solution, and a uniform primary film is formed; performing heat treatment and curing on the primary membrane to form a Si-O-M covalent network; and the post-treatment strengthening is that a potassium fluotitanate solution is adopted for sealing treatment, and micropores of the film layer are filled. Through molecular-level compounding of silane and TA, the passivation film with compactness, flexibility and a self-repairing function is constructed; meanwhile, nano cerium oxide is introduced as a nano filler and a corrosion inhibitor, so that the corrosion resistance is synergistically improved; and a low-temperature water-based process is used in the whole process, so that thermal damage to the nano-alloy is avoided, large-scale production can be realized, the limitation of a single-component passivation film is broken through, and an efficient and green solution is provided for anti-corrosion treatment of the high-activity nano-alloy.

The invention relates to the field of cable materials, in particular to a wear-resistant modified rubber cable material for a new energy automobile and a preparation method of the wear-resistant modified rubber cable material, and aims to solve the problems that an existing cable material for the new energy automobile is insufficient in wear resistance and mechanical strength, so that a cable is easy to crack, and potential safety hazards are caused. And the use requirements of the new energy automobile in a complex environment are difficult to meet. According to the preparation method, wear-resistant modified rubber, styrene-butadiene rubber and low-density polyethylene are used as matrixes, the comprehensive performance of the cable material is remarkably improved by integrating the advantages of the three materials, and then modified potassium titanate whiskers are added, so that the wear resistance and mechanical strength performance of the cable material are effectively improved; the cable can meet the use requirements of a new energy automobile in a severe environment, shows excellent protection performance, effectively prolongs the service life of the cable, and provides a cable transmission system which is longer in service life, safer and more reliable for the new energy automobile.

The invention relates to a high-heat-resistance and high-insulation two-component epoxy resin adhesive and application thereof, and belongs to the technical field of epoxy resin. The technical problem to be solved by the invention is to provide the high-heat-resistance and high-insulation two-component epoxy resin adhesive. The adhesive comprises a component A and a component B. The component A comprises bisphenol A epoxy resin, novolac epoxy resin, silicon carbide whiskers, potassium titanate fibers, boron phenolic resin and modified nano boron nitride. The component B is prepared from methylhexahydrophthalic anhydride, methyl tetrahydrophthalic anhydride, 2-phenylimidazole, modified aluminum oxide, polyimide micro powder and modified wollastonite. Through synergism of multiple materials, balance of heat conduction, insulation, mechanical strength and thermal stability of the adhesive is realized. Under high-frequency pulse voltage, the adhesive is long in electrical aging life. A gradient curing process is adopted for curing, complete reaction in each stage is guaranteed, and internal stress is reduced. The process fault tolerance is high, the environment compatibility is high, the cost is low, and the curing time is short.

The invention discloses a high-strength PTFE (Polytetrafluoroethylene)-based composite material, which is prepared from the following components in percentage by weight: 60 to 75 percent of polytetrafluoroethylene, 10 to 25 percent of polyimide, 5 to 10 percent of modified potassium titanate whiskers, 5 to 10 percent of modified carbon nanotubes and 1 to 5 percent of nano zinc oxide particles. By adding the modified potassium titanate and the modified carbon nanotubes, the wear resistance is improved by 50% compared with that of unmodified potassium titanate and modified carbon nanotubes; the modified potassium titanate and the modified carbon nanotubes are added, so that the optimal mechanical properties are shown at high and low temperatures; the self-assembly modification improves the dispersibility of CNF in a matrix. The tensile strength and the bending strength at room temperature are respectively improved by 29.4% and 26.7%; and the temperature is increased by 2.8% and 20.4% respectively at high temperature.

The present invention discloses a heat-conducting graphene floor heating pipe, belonging to the technical field of polymer materials, which includes an outer layer, a bonding layer and an inner layer. The outer layer comprises the following components in parts by weight: 100-189 parts of a support heat-conducting material, 150-270 parts of a matrix resin, 10-16 parts of a toughening agent, and 8-19 parts of an antioxidant; the polyethylene resin, graphene, a support material, and a hydrophobic material; the mass ratio of the graphene, the support material, and the hydrophobic material is 5:(0.8-1.2):(0.2-1):(0.1-0.8); the support material includes at least one of potassium titanate whiskers and aluminum borate whiskers. The floor heating pipe of the present invention has excellent heat-conducting performance and mechanical properties, greatly improves the heat dissipation rate, effectively improves the heating efficiency of the floor heating system, and achieves an overall high energy-saving effect.

The invention relates to the field of polypropylene composite materials, and particularly discloses a high-performance polypropylene composite material and a preparation method thereof. The high-performance polypropylene composite material is prepared from the following raw materials in parts by weight: 80 to 90 parts of polypropylene, 10 to 20 parts of polyethylene, 5 to 15 parts of glass fiber, 2 to 5 parts of nano clay, 0.5 to 1 part of coupling agent, 5 to 8 parts of potassium titanate whisker, 3 to 5 parts of heat-conducting filler and 1 to 3 parts of compatilizer. Through the synergistic effect of all the components, the prepared polypropylene composite material can be promoted to have relatively good strength and toughness, and meanwhile, the polypropylene material is endowed with heat-conducting property.

The invention provides a high-toughness austenitic stainless steel welding rod for 5Ni steel and a preparation method of the high-toughness austenitic stainless steel welding rod. The welding rod comprises a core wire and a coating coated on the surface of the core wire, and based on the total amount of the core wire, the core wire comprises the following components in percentage by mass: less than or equal to 0.09% of C, less than or equal to 0.15% of Si, 1.6-2.5% of Mn, 18.5-20.5% of Cr, 12.5-14.5% of Ni, 2.1-3.2% of Mo and 0.06-0.18% of Ti; 0.12-0.24% of Al, less than or equal to 0.007% of S, less than or equal to 0.008% of P, less than or equal to 0.006% of O, less than or equal to 0.001% of H, less than or equal to 0.012% of S + P, and the balance Fe and inevitable impurities. On the basis of the total amount of the coating, the coating comprises, by mass, 28-38% of carbonate, 15-20% of fluorite, 1-3% of lithium fluoride and sodium fluoride, 8-12% of synthetic mica, 3-6% of potassium silicotitanate, 2-4% of zircon sand, 9-15% of electrolytic manganese metal, 2-4% of ferrotitanium, 2-5% of passivated nickel-magnesium alloy, 1-3% of atomized ferrosilicon, 1-3% of lanthanum cerium fluoride, 1-3% of tungsten and molybdenum, 3-5% of nitrided ferrochromium and 1-2% of CMC. The welding rod is good in all-position welding controllability, extremely low in air hole sensitivity and excellent in low-temperature toughness, and can meet the requirements for high-quality and efficient welding of 5Ni steel.

The invention belongs to the technical field of welding, and particularly relates to a consumable electrode CO2 gas shield flux-cored wire suitable for cryogenic high manganese steel welding, and a flux core accounts for 25-30% of the total weight of the flux-cored wire; the flux core comprises, by weight, 25%-35% of rutile, 30%-34% of electrolytic manganese metal, 1%-5% of potassium sodium titanate, 2%-5% of quartz, 1%-3% of zircon sand, 0-0.5% of manganese ore, 1%-3% of rare earth ferrosilicon alloy, 0.5%-1.5% of rare earth fluoride, 3%-8% of high-carbon ferrochrome, 2%-4% of molybdenum powder, 2%-4% of magnesium-calcium alloy, 3%-7% of aluminum-zirconium alloy, 9%-12% of nickel-magnesium alloy, 0.5%-1.5% of rare earth silicon-calcium alloy and the balance flux. 1-1.5% of bismuth oxide, 0.5-1.5% of graphite and the balance of iron powder. The invention provides the consumable electrode CO2 gas shield flux-cored wire which is good in process and mechanical property, simple in production process and suitable for cryogenic high manganese steel welding.

The invention relates to the technical field of intermediate alloy metal materials, and provides a low-nitrogen vanadium-aluminum intermediate alloy and a preparation method thereof, and the low-nitrogen vanadium-aluminum intermediate alloy comprises the following components: 40-68 wt% of V, 0.001-0.003 wt% of N, and the balance of Al and inevitable impurities. The preparation method comprises the following steps: uniformly mixing raw materials of vanadium pentoxide powder and aluminum shots, charging the mixture into a furnace, carrying out exothermic smelting outside the furnace to obtain a vanadium-aluminum intermediate alloy semi-finished product, uniformly mixing potassium fluotitanate and nano carbon powder, putting the mixture as a grate-layer material at the bottom of a corundum crucible, charging the vanadium-aluminum intermediate alloy semi-finished product and the aluminum shots, and carrying out vacuum induction smelting, and the low-nitrogen vanadium-aluminum intermediate alloy is obtained. According to the preparation method provided by the invention, not only is the content of impurity nitrogen in the produced vanadium-aluminum intermediate alloy low, but also the production cost required by nitrogen removal is low.

The invention discloses a high-humidity-resistant high-barrier coating film and a preparation method thereof, and belongs to the technical field of polymer composite materials. The coating film comprises a base film and a coating layer, wherein the coating layer is prepared from a coating liquid containing an ethylene-vinyl alcohol copolymer, acetoacetyl modified polyvinyl alcohol, amino silane modified boron nitride nanosheets, hydroxyl modified potassium titanate whiskers, a water-based polyfunctional aziridine cross-linking agent and an epoxy silane coupling agent. A multi-phase synergistic system of a polymer matrix-nano material-cross-linked network is constructed, a three-dimensional barrier network is constructed by utilizing the synergistic effect of two-dimensional nanosheets and one-dimensional whiskers, and meanwhile, the number of hydrophilic groups is reduced through a specific cross-linking reaction, so that the barrier stability of the material in a high-humidity environment is remarkably improved. The film has excellent oxygen and water vapor barrier property, good mechanical strength, thermal stability and aging resistance, and can be widely applied to the field of high-end packaging of food, medicines and precise instruments.

The invention relates to the field of friction materials, and discloses an electromagnetic brake friction material used for an ultra-long time working condition and a preparation method of the electromagnetic brake friction material. The modified polyimide is a polyimide-silicon rubber interpenetrating complex, and the preparation method of the modified polyimide comprises the following steps: blending a silicon rubber prepolymer with a polyimide precursor and a silicon rubber prepolymer curing agent, and curing to obtain the interpenetrating complex; the reinforcing material comprises aramid pulp, copper fibers, potassium magnesium titanate lamellas, tetrapod-like zinc oxide whiskers and modified aluminum titanate fibers; the friction increasing material comprises nano aluminum hydroxide, fluororubber powder, barite, silicon carbide, feldspar powder, modified white carbon black and cashew nut shell oil friction powder; the antifriction material comprises halloysite nanotubes coated with redox graphene, molybdenum carbon phosphate and graphite fluoride. The friction material provided by the invention can meet the requirements of strength, heat resistance and wear resistance under an ultra-long working condition, and meanwhile, the thermal expansion at high temperature can also be reduced.

The invention discloses high-strength heat-resistant green concrete and a preparation method thereof, and the high-strength heat-resistant green concrete comprises the following raw materials by weight: 600-750 parts of cement; 1000 to 1250 parts of sand; 1300 to 1450 parts of broken stone; 130 to 150 parts of fly ash; 65 to 85 parts of silica fume; 180 to 200 parts of water; 27-35 parts of a water reducing agent; 26 to 33 parts of an exciting agent; 6-10 parts of a defoaming agent; 21-29 parts of a shrinkage reducing agent; 20 to 28 parts of steel fiber; 30 to 50 parts of titanate coupling agent modified glass beads; and 45-75 parts of graphene modified potassium titanate whiskers. The high-strength heat-resistant green concrete provided by the invention has the advantages of high compressive strength, good heat resistance and better anti-cracking effect.

The invention relates to the technical field of plastic steel, and particularly discloses an anti-impact plastic steel profile and a preparation method thereof. The anti-impact plastic steel profile is prepared from the following raw materials in parts by weight: 60-80 parts of polyvinyl chloride, 2-8 parts of a stabilizer, 6-10 parts of a filling agent, 9-15 parts of potassium octatitanate fiber, 10-20 parts of a toughening agent and 5-8 parts of calcium sulfate. The toughening agent comprises an inner core formed by a butyl acrylate cross-linked polymer and a polymethyl methacrylate shell; the preparation method comprises the following steps: uniformly stirring the polyvinyl chloride resin, the stabilizer, the filler and the calcium sulfate, raising the temperature to 110-120 DEG C, adding the flexibilizer and the modified potassium octa-titanate fiber, reducing the rotating speed to 600-800 rpm, stirring for 3-5 minutes to obtain a mixture, and carrying out melt blending extrusion molding to obtain the PVC profile. The composition can be used in the fields of house building, door and window manufacturing and the like, and has the advantages of high impact strength and good weather resistance.

The invention relates to a polyamide composition as well as a preparation method and application thereof, and the polyamide composition comprises the following components in parts by weight: 45-75 parts of long-chain aliphatic polyamide, 5-20 parts of semi-aromatic polyamide and 0.5-7 parts of filler, the filler comprises a first filler and a second filler; the first filler comprises any one or a combination of at least two of talcum powder, glass microspheres or barium sulfate; the second filler comprises any one or a combination of at least two of calcium carbonate whiskers, calcium sulfate whiskers, wollastonite whiskers or potassium titanate whiskers. According to the invention, by compounding the rigid-flexible polyamide composition and the filler with specific composition, the prepared polyamide composition has excellent mechanical properties and fatigue resistance, can quickly recover to the original form after being bent, and has a good application prospect as a plastic badminton material.

A preparation method of a brake friction plate belongs to the technical field of friction plate materials, and adopts viscose, polyimide fiber, polytetrafluoroethylene fiber, carbon fiber and copper fiber to prepare net-shaped woven cloth; the preparation method comprises the following steps: mixing porous nano aluminum oxide, hexagonal boron nitride, zeolite powder, crystalline flake graphite, magnesium oxide, copper powder, potassium hexatitanate whiskers, carbon nanotubes, vermiculite, mica, sodium bicarbonate, 1, 3-bis (tert-butylperoxy isopropyl) benzene, phenolic resin powder, polytetrafluoroethylene powder, epoxy resin and nitrile rubber to prepare a viscous mixture; and adding the mixture into the net-shaped woven cloth, and carrying out heating treatment, compression molding and curing treatment. The wear resistance of the prepared friction material is effectively improved, the friction coefficient reaches 0.469, and the wear rate is 0.13 * 10 <-7 > cm < 3 > (N.M) <-1 >; the impact strength is 2.3 KJ / m < 2 >, and the shear strength reaches 2.8 MPa; the brake noise of the friction plate material is effectively reduced, and the frequency of noise greater than 60dB in 2000 testing processes is only about 10 times.

The invention provides a rare-earth-based fabric with double functions of heat insulation and warm keeping and a preparation method and application thereof.The rare-earth-based fabric comprises a face A and a face B. The face A is an emission heat-insulation fiber layer prepared from emission heat-insulation slurry and a high-molecular polymer. The surface B is a heat-absorbing fiber layer prepared from heat-absorbing slurry and a high-molecular polymer as raw materials; the emission heat insulation slurry comprises rare earth doped potassium hexatitanate and titanate, and the heat absorption slurry comprises rare earth and tungsten co-doped vanadium dioxide. The fabric with the double functions of heat insulation and warm keeping can adapt to changes in winter and summer, can also adapt to various occasions such as daytime and night, has the effects of heat insulation and warm keeping or heat resistance and cooling, and is wide in application range.

The invention discloses a friction material, a brake pad and a preparation method of the brake pad. Comprising the following raw materials: 14-18 parts of modified phenolic resin, 10-15 parts of modified composite fiber, 4-7 parts of aramid fiber, 3-5 parts of rubber powder, 5-8 parts of steel fiber, 7-11 parts of graphite, 3-6 parts of aluminum oxide, 3-5 parts of silicon carbide, 4-6 parts of mica powder, 9-13 parts of potassium titanate whisker and 8-11 parts of barium sulfate. The modified composite fiber is prepared by the following steps: mixing basalt fiber and carbon fiber, coating lanthanum gadolinium oxide on the surface through hydrothermal reaction, modifying with silane, and finally reacting with 4, 5-diamino-2, 6-dimercaptopyrimidine. The friction material has the advantages of good mechanical properties, low wear rate, high thermal stability and stable friction coefficient, and is suitable for automobile brake pads.

The present invention belongs to the technical field of titanium metal processing waste acid treatment, and specifically relates to a method for regenerating titanium metal pickling waste liquid. The regeneration method comprises the following steps: adding a fluorosilicic acid solution to the titanium metal pickling waste liquid and mixing uniformly, then adding a potassium salt solution, stirring the reaction at room temperature, and centrifuging or filtering after the reaction is complete to separate the solid portion as a potassium fluorotitanate / potassium fluorosilicate complex; and the liquid portion as a regenerated titanium metal pickling liquid. The method of the present invention can significantly improve the titanium ion recovery rate without destroying the pickling liquid components. The titanium metal pickling waste liquid can be regenerated and reused, and has the advantages of good treatment effect and simple treatment process.

1. The name of the design product: stirring mixing equipment (potassium titanate powder). 2. The use of the design product: potassium titanate powder preparation stirring. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

[Problem] The present invention provides a friction pair having excellent low-speed performance stability, comprising a disc brake pad having a friction material composed of a friction material composition and a stainless steel disc rotor. The friction material composition comprises a binder, a fiber base material, and a friction modifier, and is free of copper and iron-based metal fibers. [Solution] The present invention utilizes a friction material composition containing 20-30% by weight of a titanate as an inorganic friction modifier relative to the total weight of the friction material composition, and is free of mica and vermiculite. The titanate is preferably lithium potassium titanate having a layered crystal structure.