47results about How to "Good anti-aging endurance" patented technology

The invention discloses a grid mould release agent, which comprises the following components in percentage by mass: 95.0-97.0 percent of water, 0.1-0.3 percent of polytetrafluoroethylene, 2.0-4.0 percent of cork powder, 0.15-0.2 percent of aluminum dihydrogen phosphate, 0.12-0.15 percent of adhesive and 0.2-0.35 percent of stabilizer. The mould release agent provided by the invention has the advantages of easiness in spray coating, superior adhesion, high temperature resistance, small surface tension, high pressure resistance, smooth exhaust and the like, is extremely suitable for a lead calcium alloy grid cast through gravity at a high temperature; phenomena of blowhole, cracks and the like of the grid can be extremely effectively reduced; meanwhile, mould spray frequency in a unit time can be reduced; and the production efficiency and the product quality are improved.

The invention discloses a solvent-resistant and corrosion-resistant rubber and a preparation method thereof. The solvent-resistant and corrosion-resistant rubber consists of the following parts by mass: 30-50 parts of natural rubber, 20-30 parts of nitrile rubber, and 20-30 parts of fluorosilicone rubber 30 parts, 3-7 parts of active zinc oxide, 3-9 parts of PE wax, 4-10 parts of n-butyl methacrylate, 3-8 parts of epoxy resin, 0.3-1.2 parts of anti-aging agent, 1-part of resorcinol 3 parts, polytetrafluoroethylene 6‑10 parts, coumarone resin 2‑5 parts, stearic acid 3‑6 parts, white carbon black 8‑15 parts, sulfur 10‑15 parts, accelerator AM‑2 3‑ 5 parts, 0.1-0.3 parts of anti-scorch agent CTP, the present invention is prepared by two-stage mixing method. The solvent-resistant and corrosion-resistant rubber of the invention has good resistance to organic solvents, strong acid and alkali resistance, corrosion resistance, excellent wear resistance and high temperature resistance, simple preparation, low cost and certain promotion value.

The invention provides a method for preparing an electrode of ZIF-derived CoMoO4. the method is characterized in that the method uses a high temperature calcined ZIF-67 as a precursor to prepare CoMoO4 by hydrothermal method., that steps are as follow: (1) molybdate and a compound containing a Co salt are taken and stirred in deionized water until the molybdate and the compound contain the Co saltare dissolved; (2) a small amount of ZIF-67 power are added, stirred to a homogeneou solution; 3, that mixture is transferred to a reaction kettle, and the mixture is cooled to room temperature afterreaction for 2h; (4) alternately cleaning and drying are performed for 24h; (5) Ultrasonic cleaning is performed for 30 min, deionized water cleaning and ultrasonic are performed, drying is performedfor 12 h; 6) that graphite paper is dried at constant temperature, the required material is ground in a mortar, a small amount of solvent is added, uniformly dropping on the dried sheet layer, and then drying is performed, and 7) a regular-shaped electrode of ZIF-derived CoMoO4 is performed. The invention overcomes the problems of poor stability and small specific capacitance of metal oxide electrode in the prior art, and provides a preparation method of CoMoO4 derived from metal oxide electrode material ZIF with high specific capacity and good stability.

The invention provides a polyfluortetraethylene fiber filter material and a preparation method thereof, and the polyfluortetraethylene fiber filter material has excellent advantages of excellent high-temperature chemical stability, high filtration precision, abrasion resistance, long service life, a wide range of applications and the like, and is particularly applicable to filtration needs under harsh working conditions and environment. The polyfluortetraethylene fiber filter material is prepared by carrying out dipping treatment on polyfluortetraethylene fiber filter cloth and further carrying out film coating or coating treatment, wherein the dipping treatment adopts polyfluortetraethylene solution for dipping; and the polyfluortetraethylene solution comprises 30wt%-40wt% of polyfluortetraethylene, 20wt%-30wt% of ekonol, 1wt%-3wt% of binding agent and the balance of water.

The invention discloses an electronic type dust collector, and relates to the technical field of air purification. First stand columns and second stand columns are arranged at the positions, between end plates, of the two sides of the end plates respectively, and the two first stand columns are arranged on the upper sides and the lower sides of the end plates respectively; ionization area guide plates are fixed between the first stand columns, and the ionization area guide plates are fixed to ionization area fixing bolts through ionization area guide plate spacer bushes; molybdenum wires are hooked on ionization area powered-on bolts through springs, and two ends of the ionization area powered-on bolts are fixed to the end plates through wiring column insulation bushes, lock nuts and power connection nuts; collection plate fixing bolts are arranged on the outer sides of collection area powered-on bolts and fixed to the end plates, four collection area electrode plate powered-on bolts are arranged between the collection plate fixing bolts, and the collection area electrode plate powered-on bolts are fixed to the end plates through wiring column insulation bushes, lock nuts and power connection nuts. The electronic type dust collector is simple in structure, good in dust collection effect, high in air purifying efficiency and high in practicability.

The invention discloses a determining system for original granularity of a sintering mixture. The determining system comprises a cooling device, a detecting and sample sending device, a screening device and a microscope, wherein a discharging port of the cooling device communicates with a feeding port of the detecting and sample sending device, and the detecting and sample sending device is located between the cooling device and the screening device; the sintering mixture passes through the cooling device, the detecting and sample sending device and the screening device sequentially and is fed to the microscope for detection and observation. Compared with the prior art, the determining system has the advantages that the obtained mixture is not required to be classified during freezing of the sintering mixture, the granularity of the mixture is stable, manual stirring operation is not needed, and continuous feeding and recycling of a condensate can be realized; continuous and automatic sampling and feeding of mixture particles with different particle diameters are realized in a screening process, the stability, uniformity and reliability of sampling are improved, human unstable factors during sending are avoided, the labor intensity is reduced, the analysis and detection accuracy is improved, and the sample accuracy is effectively improved.

The invention discloses a multifunctional antibacterial film. The multifunctional antibacterial film comprises a substrate which is covered with a silver film body. The silver film body is covered with TiO2 nanoparticles. The TiO2 nanoparticles are covered with a polytef film body. Grooves are formed in the surface of the polytef film body. By adopting the silver film body, the reflectivity can reach 99%, and the sterilization effect is improved; and the diameter of the TiO2 nanoparticles is 20-30 nm, and radical anions such as OH- and O2- can be generated in nanoseconds or picoseconds to attack surrounding bacteria. The adopted polytef film body has the good chemical stability, corrosion resistance, high lubrication performance, high non-sticking performance, high electrical insulating property and good ageing resistance, can work at +250 DEG C to -180 DEG C for a long time, and the service life of the film is ensured; and the grooves are prepared through a nanoimprint mode, the specific surface area is enlarged, and the sterilization effect is improved.

The invention relates to a metal coating, and in particular to a coating special for metal and a production method thereof. The coating special for metal contains the following raw materials in partsby weight: 50-60 parts of acrylic resin, 30-40 parts of polytetrafluoroethylene resin, 10-20 parts of inorganic montmorillonite, 10-20 parts of glass fiber, 20-25 parts of mica powder, 10-15 parts ofaluminium powder, 5-15 parts of ultraviolet shielding agent, 5-8 parts of butyl acetate, 3-5 pars of leveling agent, 2-3 parts of defoaming agent, 1-1.5 parts of dispersing agent, 0.8-1 part of anti-settling agent and 0.5-1 part of thickening agent. The prepared coating special for metal has excellent weatherability, fume resistance and self-cleanness, strong covering capability, good reflecting property for light and heat and strong corrosion protection; the surface of a metal workpiece processed by the coating is smooth, high in glossiness and uniform in color; and the dried paint film is excellent in chemical resistance.

The invention relates to an environment-friendly dual-core heating cable for electrothermal floor heating. The elliptical heating cable is a dual-core heating cable. The cable comprises alloy heating cores, an insulating layer, a grounding layer, a shielding layer and an outer protective sheath. The high temperature resistance insulating layer wraps the alloy heating cores. Metal wires evenly wrap the insulating layer to form the grounding layer. The grounding layer and the insulating layer are connected together. The shielding layer is arranged outside the grounding layer. The shielding layer is divided into an inner layer and an outer layer, the inner layer is formed by fully wrapping an aluminium foil or by braiding a metal wire, and the outer layer is formed by winding a metal wire clockwise with the inner layer of the shielding layer being an axis. The outer protective sheath is disposed outside the shielding layer. Compared with the prior art, the environment-friendly dual-core heating cable exhibits great mechanical strength, is durable and tensile, is resistant to aging for a long time, is highly safe, enables quick heating and temperature rises, and is environment-friendly and energy-saving.

The invention provides an electrochemically modified carbon cloth reinforced friction material and a preparation method thereof. The method adopts a carbon fiber cloth and modified phenolic resin as raw materials, and comprises the following steps: processing the carbon cloth under electrochemical conditions, selecting a composite nickel source as an electrolyte, and processing carbon fibers by adopting an anode oxidation and cathode metal nickel deposition technologies; and spraying the processed carbon cloth with a modified phenolic resin solution, taking out the sprayed carbon cloth, naturally airing, and carrying out hot pressing molding by using a vulcanizing machine. The carbon cloth undergoes anode oxidation and cathode deposition treatment under electrochemical conditions with the composite nickel source as an electrolyte to increase the oxygen-containing function groups on the surface of the carbon cloth and uniformly deposit metallic nickel. The method has the advantages of simple device and high efficiency, and the metallic nickel has large hardness, wear resistance and catalysis activity and greatly improves the bonding strength between the carbon cloth and the resin, so the uniformity of netted polymers formed through cross-linking linear polymers in the vulcanizing process is improved, thereby the friction material has a good tribology performance.

The invention discloses a polyethylene glycol terephthalate plastic film used for a heating cable. The polyethylene glycol terephthalate plastic film comprises the following raw materials in parts by weight: polyethylene glycol terephthalate, polydimethylsiloxane, zinc stearate, triphenyl phosphate, plant powder, 6-ethyoxyl-2,2,4-trimethyl-1,2-dihydroquinoline thioether, reinforced fibers, dibutyl phthalate, polytetrafluoroethylene, oleic acid, and kaolin. The polyethylene glycol terephthalate plastic film used for the heating cable has the excellent flame resistance, high temperature resistance, mechanical strength and hardness, reduces production cost, and is suitable for large scale popularization on industrial production.

The invention discloses a polytetrafluoroethylene composite isolation membrane for a lithium battery. The polytetrafluoroethylene composite isolation membrane comprises an isolation membrane which is a polyethylene microporous membrane or a polypropylene microporous membrane or a composite membrane of the polyethylene microporous membrane and the polypropylene microporous membrane; and the polytetrafluoroethylene composite isolation membrane is characterized in that: a polytetrafluoroethylene microporous membrane is coated on an end face and two sides of the polyethylene microporous membrane, or a polytetrafluoroethylene microporous membrane is coated on an end face and two sides of the polypropylene microporous membrane, or a polytetrafluoroethylene microporous membrane is coated on an end face of the polyethylene microporous membrane of the composite membrane of the polyethylene microporous membrane and the polypropylene microporous membrane and on two sides of the composite membrane. The polytetrafluoroethylene composite isolation membrane for the lithium battery can effectively isolate positive and negative plates of the lithium battery and completely eradicate a short circuit; moreover, the lithium battery is safe and reliable and has no accident in the charging and discharging processes. The polytetrafluoroethylene composite isolation membrane for the lithium battery can be used for isolating the positive and negative plates of the lithium battery.

The invention relates to the technical field of processing of woven articles, and discloses a protection method applicable to chaste tree twig woven products. The protection method comprises the following steps that 1, new-made chaste tree twig woven products are treated at the high temperature and the low temperature alternately, on one hand, the weather resistance of the chaste tree twig woven products can be improved, on the other hand, kinetic energy of molecular movement is reduced, the instability problem caused by thermal expansion and contraction to the woven products is reduced, and the mechanical property is improved; 2, the surfaces of the chaste tree twig woven products are wetted by base solution spray before lacquering, the anti-penetrability performance and the antibacterial insect-proof antiseptic performance of the woven products can be improved, the binding force of paint can be improved, and the problems that japanning performance of the surfaces of chaste tree twigs is poor and disengagement is likely to be caused are solved; 3, the speed and environmental temperature are controlled in the japanning process, japanning is uniform, and the drying speed is increased; and 4, the chaste tree twig woven products are coated with polytetrafluoroethylene powder through a plasma deposition rapid curing method, the chemical stability, corrosion resistance and good aging resistance of the products are further improved, and the service life is prolonged.

The invention belongs to the technical field of cable materials, particularly relates to a novel fluorine material high-temperature-resistant control cable material and a preparation method thereof, and solves the problems that in the prior art, fluoroplastic raw materials are high in price, the performance of domestic fluoroplastic needs to be improved, and a fluoroplastic cable is difficult in production process, low in production efficiency, large in loss, high in production cost and the like. The novel fluorine material high-temperature-resistant control cable material is prepared from the following raw materials: a novel fluorine material, silicone rubber, vinylmethylsiloxane-dimethylsiloxane trimethylsiloxy terminated copolymer, zinc dibenzyl dithiocarbamate, methyl silicone oil, a filler and a stabilizer. Compared with a traditional fluoroplastic cable, the cable material prepared by the invention is higher in safety, lower in cost, good in elasticity, excellent in comprehensive mechanical property, excellent in electrical property, high in resistivity, good in fireproof and flame-retardant properties, small in smoke amount generated by combustion, and capable of being quickly self-extinguished when being away from fire; and the weather-resistant and high-low temperature-resistant cable has good weather resistance and high-low temperature resistance, and can be used for a long time in an environment of -138 DEG C to +280 DEG C.

The invention relates to a sliding device of a dual-tower-mast giant self-lifting crane, the device is formed by the combination of a polytetrafluoroethylene plate, an elastic padding plate and a steel bottom plate in a layered adhesion manner from top to bottom, granular micro-bumps are evenly and fully distributed on the upper surface of the polytetrafluoroethylene plate, a gap among the micro-bumps is an oil filling hole cavity, the periphery of the polytetrafluoroethylene plate is enclosed to form a circle of protective sides, and the height of the protective sides is the same with the height of the micro-bumps. One surface of the polytetrafluoroethylene plate is fixed on a steel plate, thereby having the performances of pressure resistance and difficult breakage. The polytetrafluoroethylene plate and the steel plate are connected by adopting elastic material, thereby being capable of playing the buffer role on uneven planes and being applicable to construction fields with harsh conditions. The sliding device can bear and move thousands of tons of heavy things to designated place by sliding, thereby greatly reducing friction resistance and significantly improving sliding efficiency.

The invention relates to a double-core heating cable for electric floor heating. The profile of the cable is in an ellipse shape. The double-core heating cable comprises two alloy heating cores, an insulation layer, a grounding layer, a shielding layer, and an external protection sleeve, wherein the alloy heating cores are wrapped by a high temperature-resistant insulation layer; double layers of metal wires are woven and wrap the insulation layer to form the grounding layer; the grounding layer is wrapped by the polyvinyl chloride protection sleeve; the grounding layer is integrally connected with the protection sleeve; the shielding layer is disposed outside the grounding layer; the shielding layer comprises an internal layer and an external layer; the internal layer is formed by aluminum foil full wrapping or metal wire weaving; the external layer is formed by winding metal wires around the internal layer taking the internal layer as an axis clockwise; and the protection sleeve is disposed outside the shielding layer. Compared with the prior art, the double-core heating cable is good in mechanical strength, durable and anti-tensile, long time aging-resistant, high in safety performance, rapid in heating and temperature rise, environment-protecting and energy-saving.

The invention relates to a screw drill stator made of PTFE (Polytetrafluoroethylene) and the PTFE applied to the stator. The stator mainly comprises a stator shell and a polymer layer in sequence from outside to inside, wherein the polymer layer is made of the PTFE. The PTFE applied to the drill screw stator comprises PTFE powder and an additive, wherein the additive comprises the following components: 1-10 percent of polyether-ether-ketone powder, 0.5-10 percent of carbon fiber, 0.5-20 percent of glass fiber and 0.5-10 percent of graphite, and the balance is the PTFE powder. The screw drill stator made of the PTFE with reasonable compatibility has favorable toughness at about 170 DEG C, and can withstand long-term corrosion of drilling fluid as well as strong acids and strong alkali, the service life is prolonged to over 250h, the maintenance period is prolonged, and further, the production cost and the maintenance cost of equipment are reduced.

The invention discloses a guide wire for peripheral vascular interventional therapy. The guide wire comprises a handheld end and a polytetrafluoroethylene coating, one side of the handheld end is fixedly connected with a head end, a core wire is arranged in the handheld end, and one side of the outer portion of the handheld end is coated with the polytetrafluoroethylene coating. According to the guide wire for peripheral vascular interventional therapy, a tungsten-containing developing layer is arranged, the head end, a gradually-changing diameter section and the outside of a straight section are tightly coated with the tungsten-containing developing layer, and the head end and one side of the exterior of the core wire are provided with the tungsten-containing developing layer, so that the light and shadow intensity in a certain area can be enhanced, a developing effect can be greatly improved by enhancing the light and shadow intensity in an enhancement area, the diameter of the straight section of the head end can be reduced to 0.08-0.12 millimeters through the gradually-changing diameter section of the core wire, the head end of the guide wire can be softer by reducing the diameter of the straight section to 0.08-0.12 millimeters, the ability of the guide wire to pass narrow and closed sections can be enhanced through a softer guide wire, and the light and shadow intensity in the enhancement area is achieved, and the developing effect is improved.

The invention provides an aluminum mold of an auto engine and a preparation method thereof. The aluminum mold is successively provided with an aluminum mold body, a buffer layer, a graphene wear-resistant layer and a zirconium oxide corrosion-resistant layer from inside to outside, wherein the buffer layer is a nickel-polytetrafluoroethylene coating and covers the outer surface of the aluminum mold body, and the graphene wear-resistant layer is arranged between the buffer layer and the zirconium oxide corrosion-resistant layer. By coating the surface of the aluminum mold in multiple layers, the aluminum mold has excellent chemical stability and corrosion resistance and good ageing resistance.