121results about How to "Moderate toughness" patented technology

The invention discloses a composite type high-conductivity polymer material and a preparation method thereof, which belongs to the technical field of new materials. The composite type high-conductivity polymer material is characterized by comprising the following raw materials in percentage by weight: 40-62 wt% of base resin compositions, 18-25 wt% of super conductive carbon black, 10-30 wt% of rubber filling oil, 1-3 wt% of low molecular wax, 0.2-0.8 wt% of fluoroelastomer processing aid (PPA), 0.5-2 wt% of lubricant, 1.5-3 wt% of inorganic filler and 0.5-2.5 wt% of other aids. The compositetype high-conductivity polymer material has the advantages of excellent high conductivity, environmental stress cracking resistance, weatherability, ozone resistance, ultraviolet resistance, favorable high temperature resistance, high impact resistance, oil resistance, solvent resistance and mechanical property, and can be used as an environment-friendly conductive polymer sheath material of an combined through earth line, a metal anticorrosive material of other ground cable, a conductive plastic cladding material of a conductive plastic cable positive wire, an optical cable flexible sheath material, and the like.

The present invention relates to an epoxy/polyurethane interpenetrating polymer network underwtaer repairing material. Its composition includes (by weight portions) acrylic epoxy resin 90-110 portions, polyurethane prepolymer 15-30 portions, diluting agent 30-60 prtions, initiator 0.5-1.0 portions of accelerator 0.1-0.2 portions. Besides, said invention also provides its excellent properties and extensive application range.

The invention discloses an HB360-level wear-resistant steel plate and a preparation method thereof. The HB360-level wear-resistant steel plate comprises the following components in percentage by weight: 0.08%-0.20% of C, 0.10%-1.00% of Si, 1.00%-2.00% of Mn, not more than 0.015% of P, not more than 0.010% of S, not more than 1.20% of Cr, not more than 0.80% of Mo, not more than 1.00% of Ni, not more than 0.080% of Nb, 0.010%-0.100% of Al, 0.0005%-0.0040% of B, 0.005%-0.050% of Ti, 0.0010%-0.0080% of Ca, not more than 0.080% of N, not more than 0.0080% of O, not more than 0.0004% of H and the balance of Fe and inevitable impurities, wherein (Cr/5+Mn/6+50B) is not less than 0.20% and not more than 0.55%, (Mo/3+Ni/5+2Nb) is not less than 0.02% and not more than 0.45%, (Al+Ti) is not less than 0.01% and not more than 0.13%. The tensile strength of the steel plate is 1100MPa-1400MPa, the elongation of the steel plate is 14%-16%, the Brinell hardness of the steel plate is 360HB-440HB, the Charpy longitudinalV-shaped longidutional impact power at -40 DEG C is 80J-120J. The steel plate obtained by the components through each thermal treatment process is high in strength hardness, good in flexibility, easy to weld, excellent in mechanical machining performances and suitable for easy-wearing components in various mechanical devices.

The invention provides a ZrO2-based all-ceramic dental implant and a preparation method thereof. The method comprises steps as follows: ZrO2 nano powder with stable doping elements is obtained from soluble zirconium salt, strong base and a solution containing doping elements with a nano powder preparation technology; the ZrO2 nano powder is mixed with photosensitive resin, and ceramic-photosensitive resin prefabricated slurry is obtained; the ceramic-photosensitive resin prefabricated slurry is printed with an additive manufacturing technology according to a true tooth simulation model, a ZrO2 ceramic biscuit is obtained and subjected to gel removal and sintering, and a ZrO2 ceramic matrix is obtained; finally, ion penetration, sintering and mineralization are performed, and the ZrO2-based all-ceramic dental implant is obtained. The dental implant is controllable in structure and highly simulated with the additive manufacturing technology; in combination with ion penetration, sintering and mineralization treatment, synostosis of the dental implant and alveolar bone is advantageously improved; chemical ingredients of the dental implant are in gradient distribution on the whole, and the ZrO2-based all-ceramic dental implant has moderate strength, hardness, toughness and bioactivity.

The invention discloses a treatment method for a welding zone of a high-performance sulfur-resisting drill pipe body and a joint, which comprises the following steps: respectively carrying out overall quenched-tempered heat treatment on the pipe body and the joint with the same components, and then connecting the pipe body and the joint into a whole by friction welding; carrying out medium-frequency induction heating on the welding zone to 300 DEG C-600 DEG C, then carrying out stress-relief annealing, turning flashing and burrs, and carrying out post-welding heat treatment; carrying out medium-frequency induction heating on the welding zone to 780 DEG C-900 DEG C, preserving the temperature for 3-30 minutes, and then carrying out spray quenching by using a quenching medium of 20 DEG C-40 DEG C; carrying out medium-frequency induction heating on the welding zone to 690 DEG C-750 DEG C, preserving the temperature for 5-30 minutes, and then carrying out spray cooling by using a quenching medium of 20 DEG C-40 DEG C; and carrying out medium-frequency induction heating on the welding zone to 600 DEG C-700 DEG C, preserving the temperature for 5-30 minutes, and then air cooling to room temperature. After the drill pipe is treated by the method, the cracking-resisting capacity of the welding zone is improved, and the welding zone has appropriate strength, toughness, lower hardness and even distribution, thereby avoiding loss caused by sulfide stress corrosion cracking of the drill pipe.

The invention discloses an aluminum alloy welding wire for an automobile fuel tank. The raw materials of the aluminum alloy welding wire comprise, by weight, 6.3-6.7% of Mg, 0.5-0.8% of Mn, 0.16-0.18% of Ti, 0.0001-0.005% of Be, 0.2-0.4% of Fe, 0.01-0.08% of B, 0.22-0.25% of Cr, 0.3-0.4% of Si, 0.16-0.25% of Zr, 0.15-0.2% of V, 0.2-0.3% of Sc, less than or equal to 0.1% of Cu, less than or equal to 0.2% of Zn, less than or equal to 0.05% of the single content of other impurity elements, less than or equal to 0.1% of the total content of other impurity elements and the balance Al. The invention further discloses a preparation method of the aluminum alloy welding wire for the automobile fuel tank. The aluminum alloy welding wire for the automobile fuel tank is compact in welding joint tissue, good in impact resistance, toughness and tension strength, good in crack resistance, and good in fatigue resistant property.

The invention discloses a multifunctional phase change composite material and a preparation method thereof. The multifunctional phase change composite material contains the following components by mass percentage: 15-35% of EPDM, 40-75% of paraffin, 5-25% of expanded graphite, 5-25% of fire retardant, 0.5-5% of cross-linking agent, 0.01-5% of cross-linking aid, and 0-10% of processing aid; the mass percentage sum of the components is 100%. The phase change energy storage composite material disclosed by the invention has partial features of thermal vulcanized rubber, is moderate in elasticity and toughness, and good in sizing and antiseep effect, and meanwhile has the advantages of high latent heat of phase change, high conductivity coefficient, flame resistance and insulation, is simple inproduction process, and has good application prospect in multiple thermal design and heat management fields including new-energy vehicles, rail traffics, communication base stations, laser equipment,unmanned aerial vehicles and intelligent terminal equipment.

The invention discloses a cable insulation layer material with the good heat stability and the excellent mechanical property. The cable insulation layer material is prepared from, by weight, 50-80 parts of polyethylene, 10-20 parts of ethylene vinyl acetate, 15-20 parts of modified polypropylene, 1-3 parts of polydimethylsiloxane with vinyl as the end group, 0.5-1 part of benzoyl peroxide, 1-2 parts of dien, 0.4-1.2 parts of triallyl cyanurate, 1-2 parts of dibutyltin dilaurate, 0.8-1.4 parts of styryl-N-phenylaniline, 1-2 parts of 3,5-tertiary butyl-4-hydroxy cinnamic acid, 0.8-1.5 parts of tricresyl phosphite (2,4-di-tert-butylphenyl) ester, 1-2 parts of sorbitol, 1-2 parts of hydroxyl silicone oil, 1-2 parts of magnesium stearate, 1-2 parts of zinc stearate, 3-7 parts of polyurethane hot melt adhesives and 20-40 parts of a composite filler. The cable insulation layer material is good in heat stability, good in mechanical performance and long in service life.

The invention relates to a hollow rivet shaft processing technology, which comprises the following steps of: cold heading common round steel materials through a press machine to form a hollow rivet shaft and semi-circle cap appearance; turning a rotating shaft through a turning lathe, and drilling a riveting hole; removing sharp corners and burrs on the surface of the hollow rivet shaft; removing oil contamination and rusty sport, and cleaning; and chroming the surface of the hollow rivet shaft. The hollow rivet shaft processing technology can ensure the manufacturing quality and the product requirement of parts.

The invention discloses a manufacturing method of natural yeast bread dough. The method includes the steps that a, natural yeast liquid raw materials selected from fruits and cereals at least including glutinous barley are fermented to obtain natural yeast liquid; b, high-gluten flour and glutinous barley flour are mixed to obtain mixed flour, the mixed flour and the natural yeast liquid are mixed to obtain a mixture, and the mixture is fermented to obtain primary natural yeast; c, after the primary natural yeast is fermented, the primary natural yeast, warm water, high-gluten flour and glutinous barley flour are stirred into mixed dough, and the mixed dough is fermented at low temperature to obtain sponge dough; d, high-gluten flour, glutinous barley flour, malt flour, soya bean lecithin and a water solution are stirred and then added into the sponge dough to form bread dough through stirring. The invention further discloses natural yeast bread dough manufactured by adopting the method. The high water absorption rate and the high aerogenesis capacity of the glutinous barley flour, the capacity of promoting yeast aerogenesis of the malt flour and the emulsifying capacity of the soya bean lecithin are used, and low-temperature secondary fermentation is combined to obtain soft and healthy bread moderate in mouthfeel and high in nutritive value.

The invention provides an anatomical wax tray. The anatomical wax tray contains the following components in parts by mass: 7-20 parts of microcrystalline wax, 14-31 parts of paraffin, 6-17 parts of ozocerite, 7-15 parts of polybutylene, 14-28 parts of beewax, 7-12 parts of polyethylene wax, 3-11 parts of calcified rosin, 2-8 parts of castor oil, 4-11 parts of liquid paraffin, 2-9 parts of butyl rubber, 2-5 parts of albolene and 2-6 parts of white oil. The wax tray produced according to the formula is smooth in surface, moderate in toughness and not liable to rupture due to brittlement; wax chippings are hardly generated and needle holes are easily restored after the anatomical wax tray is punctured by a dissecting needle or an insect needle for many times; the anatomical wax tray is odour-free and convenient to remodel and form; under an extreme environment temperature condition (0-50 DEG C), the anatomical wax tray has low-temperature toughness and impact resistance and is not liable to rupture due to brittlement; at a high temperature, the anatomical wax tray is hardly softened to be sticky and does not volatilize odour. The anatomical wax tray provided by the invention is simple in production method, stable in performance, and capable of meeting anatomy needs on biological and medical experiment specimens in different temperature environments.

The invention discloses nutritionally balanced feed for the sheep fattening period. The nutritionally balanced feed comprises, by weight, 3-7 parts of sea-foam stone powder, 4-8 parts of lard oil, 1-1.8 parts of soybean oil, 4-12 parts of a composited coated material, 0.04-0.1 part of phytase, 0.06-0.12 part of rhizopus oryzae, 0.04-0.12 part of selenium-enriched yeast, 0.3-0.8 part of methionine, 0.12-0.2 part of lysine, 2-4 parts of Chinese herbal medicine additives, 15-30 parts of corn gluten meal, 10-16 parts of fish meal, 35-55 parts of corn, 10-20 parts of broussonetia papyrifera powder, 12-18 parts of wheat, 5-12 parts of hay meal, 10-20 parts of silkworm chrysalis, 4-12 parts of cotton seeds and 10-20 parts of sweet potato leaves. The nutritionally balanced feed is green and healthy, balanced in nutrition and good in fertilizer effectiveness.

The invention discloses a TMCP type steel plate and a die welding heat treatment method thereof. The steel plate comprises following chemical components in percentage by weight: not more than 0.10% ofC, 0.20 to 0.40% of Si, 1.52 to 1.62% of Mn, not more than 0.015% of P, not more than 0.003% of S, not more than 0.70% of Cr+Mo+Ni+Cu, 0.020 to 0.050% of Al, not more than 0.008% of N, not more than0.11% of Nb+Ti+V, and the balance being Fe and inevitable impurities. The die welding heat treatment method comprises steps of tempering and cooling. After the die welding heat treatment, in the wholethickness direction, uniform tissues composed of grain-refined ferrite, granular bainite and pearlite are obtained; the grain size is not less than 8.0 grade; the comprehensive performance is excellent, and the steel plate can be used to build a seaborne fixing structure through welding. The method has the advantages of simple steps, stable product quality, and massive production.

The invention discloses unsaturated polyester resin for a button and a preparation method thereof. The resin is mainly prepared form the following components in parts by weight: 2,000-3,000 parts of phthalic anhydride, 800-1,500 parts of maleic anhydride, 600-1,300 parts of 1,2-propylene glycol, 300-800 parts of ethylene glycol, 1,000-1,500 parts of diethylene glycol, 2,100-3,100 parts of styrene, 1-5 parts of a polymerization inhibitor, 1-5 parts of an antioxidant, 0.01-0.08 part of a retarder and 1-5 parts of paraffin, wherein the retarder consists of a high-temperature retarder and a low-temperature retarder. Compared with the prior art, the unsaturated polyester resin for the button meets the requirements of the European Union Environment Protection Laws and Regulations and is suitable for button process requirements.

The invention provides a making method of a WK160 rotary printing screen. The method comprises making of a base die, making of the base die comprises making of a male die, the male die is in conical surface involute form, the width of a rib line on the male die is not greater than 2 micrometers, the width of the rib line on the base die after press rolling is not greater than 15 micrometers, and the making method of the WK160 rotary printing screen also comprises primary nickel plating and secondary nickel plating. According to the making method, the thickness, the aperture ratio and the pulp passing capacity of the WK160 screen are high, which are more than twice those of an existing 155-mesh rotary screen and are larger than those of a rotary screen with the mesh number being lower than 155, the thickness and the aperture ratio in the length and circumferential directions are uniform, the strength is good, and the toughness is moderate.

The invention discloses an aluminium alloy welding wire. The aluminium alloy welding wire comprises the following raw materials in percentage by weight: 5.8-6% of Mg, 0.6-0.7% of Mn, 0.18-0.2% of Ti, 0.1-0.2% of Re, 0.005-0.02% of B, 0.1-0.2% of Fe, 0.3-0.4% of Cr, 0.25-0.35% of Si, 0.15-0.25% of Zr, 0.1-0.15% of Ce, 0.15-0.25% of Er, not greater than 0.1% of Cu, not greater than 0.2% of Zn, other impurities elements and the balance Al, wherein the content of each of the other impurities elements is not greater than 0.05%, and the total content of the other impurities elements is not greater than 0.1%. The invention further discloses a preparation method of the aluminium alloy welding wire. A welding joint disclosed by the invention is high in tensile strength and toughness, and not liable to crack.