1637results about How to "Play a reinforcing role" patented technology

The invention relates to a preparation method of ceramizing fire-resistant silicon rubber. The rubber comprises the following components in parts by weight: 100 parts of methyl vinyl silicon rubber, 20-50 parts of white carbon black, 2-10 parts of hydroxyl silicone oil, 1-5 parts of a coupling agent, 25-100 parts of ceramizing powder, 2-5 parts of a heat stabilizer, 10-40 parts of a fire retardant, and 1-2 parts of a vulcanizer. The preparation method includes the following steps: adding the methyl vinyl silicon rubber in a kneading machine; then adding the white carbon black and the hydroxyl silicone oil; mixing for 30 minutes at the temperature of 80 DEG C; then adding the coupling agent, the ceramizing powder, the heat stabilizer and the fire retardant; mixing for 1-1.5 hours; raising the temperature to be 100 DEG C and keeping high vacuum for 30 minutes; and after cooling to room temperature, adding the vulcanizer on an open mixing machine for mixing to obtain the ceramizing fire-resistant silicon rubber. The rubber has good mechanical property and electrical property at normal temperature, does not contain halogen, is smokeless and non-toxic during combustion, can be extinguished quickly and forms a ceramizing shell to guarantee integrity of the inside.

The invention provides a preparation method of a graphene based reinforced and flame-retarded recycled polyester staple fiber. The method comprises the following steps: preparing graphene master batch; preparing phosphate based halogen-free flame retardant master batch; weighing the graphene master batch and the phosphate based halogen-free flame retardant master batch, mixing with a recycled polyester raw material, drying, feeding molten dried raw materials into an impurity removal stirrer under the action of a screw extruder by a melt pump for carrying out homogenization impurity-removal treatment, feeding a homogenized and impurity-removal polyester melt into a secondary filter by the melt pump, enabling a filtered melt to pass through a mixed melt on a pipeline to enter a spinning manifold, carrying out drafting processing on a spun fiber to obtain the reinforced and flame-retarded recycled polyester fiber, cutting off bundles and packaging. The reinforced and flame-retarded recycled polyester chip has the good spinning forming property, the fiber quality is high, the using amount of a fire retardant can be effectively reduced under the synergistic effect of grapheme and the phosphate based flame retardant, the cost is reduced, the reinforcement effect can be achieved and the mechanical property of the fiber is effectively improved.

The invention provides a method for modifying white carbon black by adopting aliphatic polyoxyethylene ether and compounding the white carbon black with rubber and relates to the field of application of the aliphatic polyoxyethylene ether to white carbon black modification, hoping to achieve the aims of modifying the white carbon black under the condition of no VOC emission by adopting a cheap and available modifying agent and enabling the modified white carbon black to be well dispersed as filler in a rubber matrix. The modification method is characterized in that chemical bonding and physical adsorption effect are utilized for bonding the white carbon black with 1-100% by mass of the aliphatic polyoxyethylene ether, so that the modified white carbon black is prepared. Preparation steps are as follows: white carbon black suspension is prepared, temperature of the suspension is adjusted, the white carbon black is modified, and the modified white carbon black is dried. The modified white carbon black has the advantages that particle size is reduced and hydrophobicity is obviously improved. Meanwhile, the modified white carbon black can be compounded with multiple rubbers in multiple ways, the white carbon black is uniformly distributed in the prepared rubber/modified white carbon black composite material, and all the performances of the composite material can be obviously improved compared with rubber/unmodified white carbon black.

The invention provides a method for preparing an ultra-high hardness cladding layer through the synchronous ultrasonic vibration assisting laser technology. According to the specific scheme, the method includes the steps that ultrasonic vibration is synchronously introduced in the Ni-based metal ceramic coating cladding process, mobility of liquid metal can be improved in the mode, tissue distribution is more uniform, in the solidification process, a growing dendrite net can be broken and made to be dispersed to all portions of melt, small crystal nucleuses which are uniformly distributed are formed, segregation of metal ceramic is avoided, and therefore it is guaranteed that the cladding layer is not prone to cracking when ultra-high hardness is acquired; equipment is simple, calibration and installation are facilitated, energy consumption is low, the working environment is good, and acquired coating metal ceramic particles are uniform in distribution, high in hardness and good in abrasion resistance.

The invention relates to a compound microbial organic fertilizer and a preparation method thereof. The compound microbial organic fertilizer is prepared from the following ingredients in parts by weight: 1-4 parts of trichoderma viride JUWEI002 fermentation liquor, 1-4 parts of bacillus subtilis JUWEI001 fermentation liquor, 20-30 parts of turfy soil, 33-38 parts of tobacco residue, 33-38 parts of silkworm faeces, 6-7 parts of calcium powder and 1-2 parts of potassium fulvate. The compound microbial organic fertilizer disclosed by the invention has the advantages that the quality of crops can be remarkably improved, the yield of the crops is increased, and the soil structure is improved.

The invention discloses an Al-Fe-Zn-Mg rare earth alloy wire and a preparation method thereof. The aluminum alloy comprises the following elements: 0.3-1.2wt% of Fe, 0.01-0.3wt% of Zn, 0.01-0.4wt% of Mg, 0.1-1.5wt% of rare earth element and the balance of Al and inevitable impurities, wherein the rare earth element is composed of one or more of cerium, lanthanum, neodymium and yttrium. The preparation method of the aluminum alloy wire comprises the following steps: preparing an aluminum alloy rod through smelting, casting and rolling, performing insulation treatment in a heat holding cover at 240-320 DEG C for 10-20 hours, wiredrawing and extruding insulating material on the wire; or preparing an aluminum alloy rod through smelting, casting and rolling, drawing the aluminum alloy rod to prepare the aluminum alloy wire, performing semi-annealing treatment in an annealing furnace at 340-380 DEG C for 5-10 hours, and finally extruding insulating material on the wire. The aluminum alloy wire prepared by the method of the invention has excellent electrical property, mechanical property and corrosion resistance and can be used in the wire and cable conductors.

The invention discloses a disinfection robot and a disinfection method of the disinfection robot. The disinfection robot comprises a robot body, an ultraviolet lamp pole and an atomizing device, and acavity is formed in the robot body; the ultraviolet lamp pole is partially accommodated in the cavity, and the part, arranged outside the cavity, of the ultraviolet lamp pole is located above the robot body; and the atomizing device is arranged at the end, close to the ultraviolet lamp pole, of the robot body and can spray an atomized disinfectant. The disinfection robot can disperse the super dry mist disinfectant in a whole to-be-disinfected area more uniformly, so that the synergistic effect of ultraviolet and the super dry mist disinfectant is improved, and the disinfection efficiency canbe improved. Accordingly, the invention further provides the disinfection method of the disinfection robot.

The invention discloses a high-strength, corrosion-resistant and medium-entropy alloy and a preparation method thereof. The component of the medium-entropy alloy is (CoCrNi)(100-x)Mnx, the atomic ratio of Co to Cr to Ni is (0.5-1):(0.5-1):(0.5-1), the value range of x is 1at%-10at%, , the alloy is formed through mixing, smelting, homogenizing treatment, rolling and heat treatment machining, the grain size of the alloy ranges from 30 mu m to 200 mu m, the manganese-rich phase is separated out of the grain boundary, the tensile strength of the alloy is higher than 1,200 MPa, the ductility is higher than 10%, the corrosion potential ranges from negative 0.43 V to negative 0.26 V, and the medium-entropy alloy is applicable to marine engineering equipment. The preparation process route of the alloy includes vacuum smelting, suction casting, homogenizing annealing, cold rolling and heat treatment. Co, Cr and Ni with the purity being 99% or higher are selected and weighed according to the proportion and are smelted repeatedly in a vacuum smelting furnace, suction casting forming is performed after the component is uniform, multi-pass cold rolling is adopted after annealing treatment, a plate which is 1-2 mm thick is obtained, the tensile strength of the plate is higher than 1,200 MPa, the ductility is higher than 10%, and the corrosion potential ranges from negative 0.43 V to negative0.26 V.

The invention discloses a laser perforating device capable of improving the conical degree and the inner wall quality of a hole, and a method. According to the method of the laser perforating device, a workpiece is subjected to primary laser perforating and then rotates 180 degrees in the x direction of the hole through a rotatable clamp, so that the workpiece is just soaked into water, x and y coordinates of the small hole are not changed, and then secondary laser perforating is conducted through a laser-induced cavitation technology; and in addition, the laser perforating device capable of improving the conical degree and the inner wall quality of the hole is designed and comprises a power box, an uncovered cuboid container, a laser head, a laser guide pipe, a CCD camera, a laser device, a z-direction moving mechanism, a fixing clamp device, an x-y moving platform and a rotatable clamp device. According to the laser perforating device and the method thereof, the mode of conducting laser perforating in air and the mode of conducting laser perforating in water are coupled, secondary perforating is completed by turning over the workpiece so that the conical degree of the hole can be improved, the laser perforating technology and the laser-induced cavitation technology are combined in the secondary perforating process, and the inner wall of the hole is strengthened by impact waves generated through cavitation.

The invention discloses a novel weathering resistant steel microalloying compound core-spun yarn comprising a steel sheath and a powdery inner core, wherein the powdery inner core is composed of the following chemical ingredients in percentage by weight: 20% of Ca, 0.5% of Mg, 38% of Si, 1.2% of Ba, 1.9% of rare-earth metal, 3.2% of Zr, 1.6% of Ti, 0.5% of B, 0.9% of Mo, 0.5% of Mn, 0.9% of Nb, 0.6% of V and the balance of Fe and inevitable impurity. The invention can obviously refine steel microstructure, improves the decay resistance of steel and lowers C, P and S content in steel by reasonably designing the chemical ingredients; and meanwhile the invention can reduce the amount of parts of alloy elements in steel so as to lower cost.

The invention relates to an external high-definition on-site law enforcement recorder. The recorder has the advantages of simple structure, convenient use, capability of imaging with high definition, convenient image playback, easy correction of camera shooting direction and the like. The structure of the recorder is that: a driving control circuit and a battery are arranged in a shell; the shell is externally connected with a high-definition camera through a connecting wire; the high-definition camera is connected with the driving control circuit and is provided with a corresponding movable filtering device and a lens direction aligning and imaging deflection correcting device; the driving control circuit is also connected with a wireless transmitting device; and the shell is provided with a data interface which is connected with the driving control circuit.

The invention provides a thick steel plate for a pressure vessel, a method for manufacturing the same and use of the same. The thick steel plate comprises the following chemical components: 0.08 to 0. 20 weight percent of C, 0.10 to 0.40 weight percent of Si, 1.0 to 1.6 weight percent of Mn, less than or equal to 0.01 weight percent of S, less than or equal to 0.012 weight percent of P, 0.015 to 0.05 weight percent of Al, 0.40 to 0.60 weight percent of Mo, less than or equal to 0.10 weight percent of Cu, 0. 40 to 0.80 weight percent of Ni, less than or equal to 0.05 weight percent of V, less than or equal to 0.008 weight percent of N, and the balance of Fe and inevitable impurities. Alloying and heat treatment ensure the high strength, excellent toughness and other characteristics of the thick steel plate. The product of the method can replace pressure vessel made of a forged piece, and is particularly suitable for manufacturing cylinders, sealing plug and the like for nuclear reactor pressure vessels, evaporators and stabilizers.

A paper reinforcing agent contains amphoteric polyacrylamide aqueous dispersion. A preparation method comprises the following preparation steps: adding part of main monomers into a water-phase medium dissolved with a chelating agent, a dispersion stabilizing agent and inorganic salt, and polymerizing by a previous initiator to obtain a seed polymer; and then adding deionized water, the remaining main monomers and a later initiator in the seed polymer, and carrying out polymerization reaction to obtain an amphoteric polyacrylamide water-in-water dispersion solution. The amphoteric polyacrylamide aqueous dispersion is water-in-water polymer emulsion which is small in apparent viscosity, good in mobility, large in molecular weight, uniform in particle size and excellent in storage stability; and the dispersion solution product is added in slurry or is sprayed and permeates in net wet paper, the strength, including tensile strength, bursting strength, ring crush compression resistance, surface strength and the like, of paper can be improved, and meanwhile, the retention and drainage effect in a papermaking process is improved.

The invention discloses a normalizing-type high-strength pressure vessel steel plate with good low-temperature toughness at minus 50DEG C. The normalizing-type high-strength pressure vessel steel plate is made of chemical compositions comprising, by weight, 0.10-0.22% of C, not more than 0.40% of Si, 1.10-1.74% of Mn, not more than 0.015% of P, not more than 0.010% of S, not more than 0.40% of Ni, not more than 0.18% of V, 0.0070-0.0190% of N, 0-0.025% of Als, 0-0.018% of Ti, the balance of Fe and unavoidable impurities, wherein formulas: 3.5</=(V+Ti)/N</=15 and Ti/(3.5N)</=C+V+2Ti</=5V/(C+V) are satisfied simultaneously. The yield strength of the steel plate is >/=460MPa, the tensile strength ranges from 630MPa to 740MPa, the ductility is >/=25%, the yield ratio is </=0.80, good welding property is achieved, and production cost is low.

The patent refers to the field of 'drying solid materials or objects by removing liquid therefrom'. The invention relates to a drying device, particularly relating to an energy-conserving device, and providing a high-air-volume multistage circular energy-conserving drying device utilizing wastes to heat fresh air. A drying room is composed of multi-section drying ovens; each drying oven is provided with a diaphragm; an enclosed air room with multiple air flue slits is arranged on the diaphragm, and is communicated with a heat exchanger through an air inlet main pipe, an air inlet branch pipe, an air outlet main pipe and an air outlet branch pipe; a fresh-air taking opening is connected with the heat exchanger and a heat exchanging draught fan in sequence; the outlet of the heat exchanger, the air inlet main pipe and the air inlet branch pipe are connected with each air room; the air exhaust branch pipe of the previous two-section drying oven air room with high waste gas concentration is discharged through a primary heat exchanger; other air exhaust branch pipes are connected on the air outlet branch pipe, and are connected with a secondary heat exchanger and the front end part of the heat exchanging draught fan to form circulation; the inner air volume is increased; the hot air circulates in the drying oven; the waste gas temperature is utilized to save energy source; the drying oven temperature is flexibly set, and small circulation is flexibly regulated in the drying oven; and the temperature control is uniform.

The invention relates to a method for preparing a black polyurethane elastic fiber via in situ polymerization, comprising the following steps: (1) evenly dispersing nanometer carbon black particles in low-polymer polyhydric alcohol by using a grinding or ultrasonic and powerful mechanical stirring method so as to form a stable mixture, (2) adding diisocyanate in the polyhydric alcohol containing the carbon black particles for full reaction and adding a solvent for full dissolution to obtain NCO end capped prepolymer polyurethane formic ether solution; (3) carrying out chain extension and chain termination on the prepolymer solution by using mixed amine solution to generate polyurethane urea solution, and (4) curing the polyurethane urea solution and spinning the polyurethane urea solution into the black polyurethane elastic fiber by means of a dry spinning system. The polyurethane elastic fiber prepared via an in situ polymerization method is lasting in black effect and high in color fastness, so that the subsequent processing is free of dyeing; and at the same time, the polyurethane elastic fiber has relatively good mechanical property.

The invention discloses a graphene strengthening nickel base composite material and a preparing method thereof. The method includes the steps that a reducing agent and nickel sulfate are sequentially added into an oxidized graphene solution; nickel powder prepared through reduction is directly compounded with oxidized graphene in the solution, and oxidized graphene/nickel composite powder is initially obtained; the oxidized graphene/nickel composite powder is dried and restored to obtain graphene/nickel composite powder; and composite blocks, composite wires and composite strips of graphene/nickel are obtained through powder metallurgy, hot extrusion and rolling technologies. Graphene in the composite material is evenly scattered, base and strengthening body interface bonding is good, and the composite material has the excellent physical performance. Meanwhile, the process of the graphene strengthening nickel base composite material and the preparing method is simple, the procedure is easy to control, and large-scale application and production are easy to achieve.

The invention discloses a flame-retardant glass fiber reinforced PBT (polybutylene terephthalate) with high glow wires and a high CTI (comparative tracking index) value and a method for preparing the flame-retardant glass fiber reinforced PBT. The flame-retardant glass fiber reinforced PBT comprises, by weight, 38-45 parts of PBT, 5-8 parts of PET (polyethylene terephthalate), 15-18 parts of flame retardants A, 0.5-1.5 parts of flame retardants B, 5-8 parts of flame retardants C, 2-4 parts of toughening agents, 0.2-0.4 part of antioxidants, 0.3-0.6 part of lubricants and 25-30 parts of glass fibers. The flame-retardant glass fiber reinforced PBT and the method have the advantages that the glow wire ignition temperature (GWIT) of the flame-retardant glass fiber reinforced PBT can be increased and reaches 850 DEG C, and a comparative tracking index (CTI) of the flame-retardant glass fiber reinforced PBT can reach 400 V; the mechanical performance and the machining performance of the flame-retardant glass fiber reinforced PBT can be prevented from being damaged or only is damaged at low level.

The present invention discloses a nanometer composite material and a preparation method thereof, the nanometer composite material prepared through the method, and a vulcanized rubber containing the nanometer composite material and applications thereof. According to the present invention, the nanometer composite material contains white carbon black, graphene oxide, and a surface modifier attached onto the surface of the white carbon black and/or graphene oxide; the nanometer composite material preparation method comprises uniformly mixing the white carbon black and the graphene oxide in water, carrying out spray drying to obtain a solid, mixing the obtained solid and the surface modifier, and drying; the present invention further provides the vulcanized rubber and applications of the vulcanized rubber in tire material preparation, wherein the mixture containing the nanometer composite material, a raw material rubber, a vulcanizing agent and an accelerator is subjected to mixing and vulcanizing to form the product, ie., the vulcanized rubber; the nanometer composite material has excellent dispersion property and excellent compatibility; and the vulcanized rubber has characteristics of good tensile property, good abrasion resistance and good dynamic mechanical property.