94results about How to "Strong physical properties" patented technology

Adhesive antimicrobial dental compositions and methods for forming and using compositions are disclosed. The compositions are primarily useful as pulp caps and dentin liners. The composition includes an alkyl methacrylate having an oxyphosphorus group, a polymerization initiator and an antimicrobial agent. The antimicrobial agent can be organohalogens, antibiotics, alkali metal hydroxides, alkaline earth metal oxides and alkaline earth metal hydroxides. The compositions have high dentin tensile bond strength, are stable as a single component or package system, can be polymerized in situ, prevent ingress by microorganisms into an area of a tooth treated with the compositions and can be syringe delivered.

The invention provides a cathode material of a lithium ion battery. The cathode material contains active substance and conductive agent, wherein the conductive agent comprises a first conductive agent and a second conductive agent; the first conductive agent is a conductive polymer containing polar groups, and the second conductive agent is one or more selected from carbon black, graphite, carbon fiber, carbon nanotube, nickel carbonyl powder, copper powder, iron powder, zinc powder and aluminium powder. The invention also provides a lithium ion battery. During a slurry preparation process, polar groups facilitate hydrogen bond formation on the second conductive agent and the anode active substance surface and enhance disperse degree of the second conductive agent and the anode active substance in a solvent, so that the slurry is more easily coated, and the coating thickness is uniform; and the prepared polar sheet has good consistency.

A multipurposed composite multi-layer plastic pipe used in mine or oil field for delivering gas, air, water oil, etc. or as the rollers of belt conveyer features that its pipe wall is composed of a core layer and two surficial layers. Said surficial layer contains 10 components including polyvinyl chloride, polyvinyl oxide composite stabilizer, stearic acid, etc. Said core layer contains 8 components including polyvinyl chloride, low-molecular polyethene, composite stabilizer, calcium stearate, etc.

The invention relates to a gel electrolyte film of a lithium battery and a preparation method of the gel electrolyte film. The preparation method comprises the following steps of: making bacterial cellulose neutral; producing bacterial cellulose pulp by beating and dispersion; and performing suction-filtration, dehydration and electrolyte soaking to obtain the gel electrolyte film. The gel electrolyte film of the lithium battery provided by the invention has good ion conductivity and mechanical strength and effectively solves the problem of poor mechanical strength of the gel electrolyte film. By the preparation method of the gel electrolyte film, the thickness of the gel electrolyte film is reduced by means of beating and suction filtration, the surface smoothness of the gel electrolyte film of the lithium battery is improved, fibre distribution is more uniform, arrangement is dense, physical property is relatively strong, an application range is expanded, a preparation process is simple, and industrial production is easy to carry out.

The invention relates to a method for preparing a film strain sensor. The method comprises steps that a film insulating layer is prepared on a metal substrate. A metal sensitive film layer is formed on one side of the film insulating layer. A first bonding layer is formed on a side of the metal sensitive film layer away from the film insulating layer. A graphene layer is formed on a side of the first bonding layer away from the metal sensitive film layer. A second bonding layer is formed on a side of the graphene layer away from the first bonding layer. The metal sensitive film layer, the first bonding layer, the graphene layer and the second bonding layer have the same shape and are stacked in order to form a resistance grid and an electrode connection structure. The method is advantagedin that the film strain sensor can have the characteristics of both metal and graphene, so the film strain sensor has both excellent electrical conductivity and strong physical property, has advantages of high sensitivity and a wide range of installation environments and can be used in harsh environments such as acid and alkali, salt spray, and high and low temperature alternation.

The invention relates to a preparation method of explosion-proof bulletproof high-strength special coating. The coating is prepared from a component A and a component B, wherein the component A and the component B are respectively prepared; the component A is a prepolymer generated by reaction of aliphatic isocyanate, polyester polyol and aminated mixed filler fibers (carbon nanotubes and a high-strength carbon fiber material); and the component B is a product generated by reaction of aspartate, amine-terminated polyether, an amine chain extender, a polyurea modified composite reinforcing material and a catalyst. When in use, the component A and the component B are subjected to construction by spraying equipment or brush coating or roller coating according to a ratio of 1: 1. The obtainedcoating is stable in performance, good in tear resistance and very high in tear strength under high-speed impact due to addition of the amination modified carbon nanotubes and the carbon fibers, and the polyurea modified composite reinforced material has super-strong wear resistance and high physical strength and keeps relatively high strength under the condition of high-speed large deformation. The filling material participates in the cross-linking chemical reaction of the paint coating after surface modification, so that the filling material has tight bonding property with the paint coatingand better flexibility is achieved at low temperature.

The invention discloses a centrifugal casting method of bearing bushes. The centrifugal casting method comprises the following steps: preprocessing steel brushes; dipping the steel brushes with tin; melting tin-based bearing Babbitt alloys; casting; checking and the like. The products cast by the method are high in size precision, small in machining allowance and few in casting defects. The method has the advantages that the working efficiency is improved and the cost is reduced and plays a role of guiding actual production.

The invention discloses a high-light-absorptivity solar heat-absorbing paint which can be used for any heat collection device capable of converting solar energy into heat energy. The paint is formed by dispersing and uniformly mixing a resin, a light absorber, a solvent and aids according to certain parts by weight by a sand mill. By using the light absorber treated by a novel simple mode as the critical raw material for preparing the paint, the sunlight absorptivity of the paint is greatly enhanced, so that the light-heat conversion efficiency of the heat collection device is enhanced. Besides, the paint has the advantages of excellent weather resistance and longer service life.

The invention provides an optical proximity correction method. An optical model and a photoresist model of a variable exposed reference threshold value are fitted simultaneously to obtain an optimal correction parameter value for testing a mask pattern. According to the optical proximity correction method provided by the invention, the photoresist model does not depend on optical model parameters obtained by matching the inaccurate optical model with the photoresist model of the exposed reference threshold value so that the physical property of an optical proximity correction model is guaranteed and an obtained result is relatively close to actual optical proximity correction; and the effect of carrying out the optical proximity correction by adopting the result is relatively good.

The invention discloses a high-strength cable material, belonging to the technical field of breaker materials. The high-strength cable material is prepared from the following raw materials in parts by weight: 70-90 parts of thermoplastic polyurethane, 8-11 parts of butadiene styrene rubber, 4-6 parts of carbon black, 40-50 parts of calcium carbonate, 15-25 parts of vinyl acetate ethylene, 3-5 parts of cyanoacrylate, 12-14 parts of glass fibers, 2-4 parts of epoxidized soybean oil, 20-30 parts of a plasticizer, 0.5-2 parts of a crosslinking agent and 0.2-0.8 part of a light stabilizer. The invention further discloses a preparation method of the high-strength cable material. The cable material has high strength and relatively good physical properties.

The invention provides a preparation method for an optical fiber preform. The preparation method is characterized by comprising the steps of preparing a cladding and a fiber core, and specifically comprises the steps that (1) raw materials of the cladding and raw materials of the fiber core are prepared; (2) the raw materials of the cladding and the fiber core are ground in an agate mortar and areeach put into a corundum crucible with a cover, after melting is carried out in an electric furnace, cladding molten glass is poured into a preheated copper film, and protective gas is introduced into a hollow glass tube; (3) fiber core molten glass is poured into the glass tube of the cladding, and pouring is carried out so as to form an optical fiber preform body; (4) the poured optical fiber preform together with a mold is clamped and drawn into the electric furnace for annealing treatment, and after annealing treatment is finished, natural cooling is carried out to reach room temperature;and (5) the optical fiber preform body is taken out for flame polishing, then mixed hydrofluoric acid and nitric acid are added for acid pickling, washing is repeatedly carried out with deionized water, and drying is carried out so as to obtain the processed optical fiber preform. According to the preparation method, fiber breaking is not liable to occur for an optical fiber drawing tower wire after the wire drawing process, and the fiber breaking rate in the disc dividing process is relatively low.

The invention relates to a field effect transistor model parameter correction method taking shallow trench isolation into account and belongs to the technical field of integrated circuit design. The method comprises the steps that a parasitic parameter extraction tool is adopted to extract STI (shallow trench isolation) structural parameters from an input layout; the stress in the trench of an MOSFET (metal-oxide-semiconductor field effect transistor), along the length direction and the width direction of the trench is calculated according to the STI structural parameters; and the MOSFET model parameter corrections are obtained through the stress calculation, including electron mobility correction, hole mobility correction, N-MOSFET threshold voltage correction and P-MOSFET threshold voltage correction, electron saturation speed correction and hole saturation speed correction. The field effect transistor model parameter correction method taking shallow trench isolation into account can improve the reliability of circuit simulation and increase the success rate of integrated circuit design.

The invention discloses a sealant preparation technology, in particular a preparation method of a deoximation type one-component room-temperature sealant. The sealant contains the following components in parts or percentage by weight: 25-60 parts of 107 adhesive, 3-15 parts of a crosslinking agent, 20-55 parts of filler, 3-15 parts of auxiliaries, 1-10 parts of a coupling agent and 0.01-0.15% of an organic tin catalyst. By adopting the formula and the method, the sealant has stronger physical properties and also has rapid curing characteristic; meanwhile, a porous structure filler reasonable in formula and a hygroscopic polymer are added, and the filler of the porous structure and a hydrophilic polymer can absorb water vapor in the air in the sealant, so that the curing rate of the sealant is increased; and the obtained sealant has the strength higher than 2.5MPa, the stretching rate higher than 300% and the shear higher than 2.0MPa, and the highest curing depth after 4 hours can reach 1.9mm.

The invention discloses a cold-proof, oil-proof and halogen-free signal cable which comprises an outer sheath and an outer wrapping layer, wherein the outer wrapping layer is internally provided with a USB (universal serial bus) transmission line and an RGB (red green blue) coaxial transmission line; the USB transmission line comprises a first weaving layer and a first inner wrapping layer; the first inner wrapping layer is internally provided with first signal lines and power lines; the RGB coaxial transmission line comprises a second weaving layer and a second inner wrapping layer; the second inner wrapping layer is internally provided with three second signal lines and power lines; the power lines consist of power line insulating layers and power line conductors; the first signal lines consist of first insulating layers and first conductors; the second signal lines consist of second conductors, inner insulating layers, oblique cladding layers and inner sheaths; the first insulating layers and the power line insulating layers are made of cold-proof, oil-proof, antiflaming and halogen-free materials; the inner sheaths are made of cold-proof and oil-proof thermoplastic materials; and the outer sheath is made of an oil-proof, halogen-free, antiflaming and low-temperature-resistant XLPE (cross linked polyethylene) material. The cable has high-antiflaming and low-smoke effects, can transmit power and signals, and is good in physical property, corrosion-resistant, and low-temperature-resistant.

The invention relates to an acryl multi-arm silane coupling agent and a preparation method thereof. The coupling agent comprises a compound with a structure as shown in formula (I) in the specification, wherein in the formula (I), R<1> represents straight-chain type, branch-chain type or cyclic alkylene with carbon number of 1-15, enylene, arylidene or a combination thereof; R<2> represents alkyl with carbon number of 1-18, alkenyl, aryl, halogenated alkyl, halogenated aryl, or an organic group with epoxy, acryloyl, methacryloyl, sulfydryl, amino or cyan; R<3> represents alkoxy, acyloxy or halogen atom; n is 0, 1 or 2. The acryl multi-arm silane coupling agent provided by the invention is good in compatibility with acryl-rich resin materials. While being applied as a coupling agent to treat the surface of an inorganic material, the acryl multi-arm silane coupling agent generates more chemical cross-linking points, so that adhesive force between the inorganic material and the matrix resin is stronger.

The invention discloses a fiber cork rubber sealing material and a preparation method thereof. The problem that the conventional sealing gasket is relatively low in tensile strength, low in compressive property and high in stress relaxation performance is solved. The fiber cork rubber sealing material mainly consists of the following substances in percent by weight: 8-35 percent of latex, 20-65 percent of granulated cork, 5-40 percent of fiber, 1.2-6 percent of compounding agent and the balance of filler, wherein the length of the fiber is more than 1.0mm and less than 30.0mm. The fiber cork rubber sealing material has the advantages that the tensile strength is improved, the compressive property is improved, and a phenomenon that the stress relaxation performance is increased is effectively avoided.

The invention discloses a method for testing and extracting a bipolar transistor process deviation model parameter on line. The method comprises the following steps of: short connecting a base electrode and a collector electrode of a Gumme1 plot testing loop; setting a reference level emitter voltage as 0; scanning the voltage difference between a base electrode voltage and a collector electrode voltage from 0.1 v to 0.8 v; choosing any two or more points; testing a corresponding collector electrode current value; taking a logarithm value of each point of the collector electrode current; deriving a linear function that Y is equal to AX+B, calculating the value of A and B in the linear function; evaluating a value of a model parameter IS and NF; and testing a whole silicon slice on line to obtain a process deviation range of the IS and NF. The method of the invention tests the specific value and the process deviation range of the IS and NF on line so as to enhance the physical property of the process deviation model of a BJT device.

The invention discloses a strong non-drying adhesive label for sticking a bubble express bag. The label comprises a surface paper layer, an anti-sticking bottom paper layer and a pressure-sensitive adhesive layer, wherein the pressure-sensitive adhesive layer is an intermediate layer, the pressure-sensitive adhesive layer adheres between the surface paper layer and the anti-sticking bottom paper layer, and the pressure-sensitive adhesive layer comprises the following components: 25-30 parts of an SIS thermoplastic elastomer, 30-35 parts of petroleum resin, 5-10 parts of rosin glyceride, 10-15parts of pentaerythritol ester, 15-20 parts of naphthenic oil and 0.3-0.4 part of an antioxidant. The strong non-drying adhesive label for sticking the bubble express bag disclosed by the invention has the advantages of good physical properties, good initial viscosity, high stripping strength and the like, and has stronger sticking performance on a pearlescent film bubble express bag and a woven bag, surface paper is damaged when the label is torn strongly after the label is stuck, the problem that the label falls off during an express logistics transportation process can be avoided, all indexes meet environmental protection requirements, and the adhesive used in the label is a hot-melt pressure-sensitive adhesive, has a solid content of 100% and does not contain any solvents. The non-drying adhesive label provided by the invention is environmentally friendly.

The invention discloses non-ferrous metal particle semi-solid forming equipment. The non-ferrous metal particle semi-solid forming equipment comprises a first-section horizontal feeding mechanism anda second-section vertical forming mechanism, wherein the first-section horizontal feeding mechanism is used for conveying, melting, mixing and storing metal particles and feeding the metal particles into a forming die cavity; the first-section horizontal feeding mechanism is provided with a horizontal feeding tube device, a segmented gradient heating system sleeving the feeding tube device, a material storage device in butt joint with the feeding tube device in a shear opening structure and a drying system arranged outside the material storage device; the second-section vertical forming mechanism is used for realizing die forging casting forming; and the working direction of the first-section horizontal feeding mechanism is arranged perpendicular to the working direction of the second-section vertical forming mechanism, the first-section horizontal feeding mechanism communicates with the interior of the second-section vertical forming mechanism, and the first-section horizontal feedingmechanism and the second-section vertical forming mechanism are in butt joint in a sealed mode through a smooth type material outlet to realize the horizontal feeding and vertical forming. The invention further discloses a non-ferrous metal particle semi-solid forming process.

The invention discloses an easily-degradable anti-shrinkage polypropylene master batch, wherein polypropylene serves as a base material, the types and the formula of the master batch are optimized, and a production process is improved. A complex antioxidant which contains a biologic antioxidant, modified nanocarbon which can obviously improve high temperature resistance, shrinkage resistance, relative tensile load, strength and toughness and elasticity modulus of the polypropylene master batch, calcium fruit fibers which can obviously improve shock resistance of the polypropylene master batch, are easily biodegradable and lower production cost, polyethylene / winter rye peptide complexes which can greatly improve low temperature resistance of the polypropylene master batch and bitter almond oil which can effectively improve lubricating property and oxidation resistance of the polypropylene master batch are scientifically compounded; the obtained compound has a synergistic effect with other processing aids; finally, the environment-friendly easily-degradable anti-shrinkage polypropylene master batch with good physical property is obtained.

The invention relates to an ecological restoration method for Penaeus vannamei breeding water, comprising: collecting the tail water from the culture into a tail pond, using the self-settling effect of the water body to initially purify the residual bait and excrement, and then entering the ecological purification pool, and floating plants on the water surface The bionic water plant system is used for biological purification, and then the water pump is used to pump the purified water into the automatic filter for micro-mesh filtration, and then the water body is sterilized by the ultraviolet sterilization box, and then re-enters the aquaculture pond. Aiming at the problems of excessive total nitrogen, nitrite nitrogen and ammonia nitrogen concentration and high turbidity in the culture water of Penaeus vannamei, the present invention adopts technologies such as self-settling, floating plant absorption, bionic aquatic plant system purification, micro-mesh filtration and ultraviolet sterilization to remove large Part of the residual bait and excrement reduces the concentration of ammonia nitrogen and nitrite nitrogen, controls the excessive growth of algae, reduces the turbidity of the water body, improves the landscape effect and economic benefits at the same time, increases the ecological diversity of the aquaculture water body, and has a good application prospect .

The invention provides an anti-pinch hinge for an industrial door, belongs to the mechanical technology field, and solves the problem of poor quality of the existing hinge for an industrial door. The anti-pinch hinge for the industrial door comprises an adjustment sheet, as well as a first hinge sheet and a second hinge sheet which are in hinge connection through a rotary shaft, wherein a winding drum is formed at the side of a first horizontal part of the first hinge sheet; a rotary shaft is arranged in the winding drum in a penetrating manner; strip-shaped holes are formed in a vertical part; location bolts are fixed in the strip-shaped holes in a penetrating manner; the first hinge part comprises a ceramic filling part and a metal layer arranged on the outer layer of the ceramic filling part; the ceramic filling part is formed by taking silicon carbide ceramic as a main body and at least partially arranging a silicon nitride ceramic surface layer on the outer layer of the main body; and the metal layer comprises the following composition ingredients in percentage by weight: 0.17-0.25% of C, 0.22-0.35% of Si, 1.2-1.3% of Cr, 0.05-0.2% of Ni, 0.3-0.8% of Mo, 0.3-0.8% of Mn, 0.06-0.12% of Ti, 0.05-0.3% of B and the balance iron. The anti-pinch hinge for the industrial door, which is provided by the invention, has the advantages of being simple in structure and high in safety.

The invention discloses a production process of fluorine-free environment-friendly sports shoe synthetic leather, which specifically comprises the steps: preparing a fluorine-free wet base coating material, a fluorine-free wet base impregnation material and a dry top material according to a formula, impregnating a nonwoven fabric into the wet base impregnation material, scraping to apply the wet base coating material onto the surface of the nonwoven fabric, solidifying in a solidification tank to form a film, extruding, washing, and baking and setting to form a wet base; scraping to apply a mixed solution of the dry top material onto release paper, bonding the wet base through a fluorine-free adhesive, and separating the release paper a finished product. The environmental damage due to theuse of conventional fluorine hydrolysis-resistant resin is eliminated, the synthetic leather produced herein is soft to touch, and has excellent elasticity, high peeling strength and high hydrolysisresistance.

The invention discloses a domestic sewage filter device, which comprises two parts of a separation device and a filtering device; the separation device is a cylinder, an upper side face of the cylinder is provided with a water inlet, a support column is arranged in the middle of the cylinder, the support column is provided with movable separation disintegrators, a lower side face of the cylinder is provided with a water outlet; the filtering device is a cylinder, the lower side face of the cylinder is provided with a water inlet, the water inlet of the cylinder of the filtering device is connected with the water outlet of the cylinder of the separation device, an upper side face of the cylinder of the separation device is provided with a water outlet, multi layers of filter materials are arranged from bottom to top in the cylinder of the separation device, the lower filter material is arranged on a filter plate, the filter plate is supported by a column or other substances, and an exhaust pipe is arranged in the middle of the filter materials. The domestic sewage filter device adopts the technical scheme, compared with the prior art, the domestic sewage filter device has the advantages of full sewage degradation, fast purification, simple structure, and up-to-standard sewage discharge.

The invention discloses a method for improving the interfacial bonding strength of an aramid fiber reinforced composite, which comprises the following steps: 1) modifying the aramid fiber; 2) mixing the modified aramid fiber with epoxy resin in a mechanical manner, then, placing the mixed powder into a press vulcanizer mould to be shaped, and pre-moulding the preformed blank; 3) rapidly increasing the temperature to 180-185 DEG C and maintaining for 50-60 minutes to mould the mould-pressed material, and removing the pressure when the temperature is decreased to 110 DEG C along with the furnace; and 4) taking out the mould-pressed composite material together with the mould, and cooling to the room temperature to obtain the composite material. The technique is simple, and the prepared composite material has excellent interfacial bonding strength and excellent mechanical property.

The invention relates to the field of wires and cables, in particular to a wear-resistant and tensile-resistant cable sheath material and a preparation method thereof. The wear-resistant and tensile-resistant cable sheath material is prepared from, by weight, 70-105 parts of chlorinated butadiene rubber, 55-75 parts of phenolic resin, 13-24 parts of brominated polystyrene, 10-15 parts of white carbon black, 1-5 parts of magnesium oxide, 8-13 parts of isophthalate, 10-20 parts of petroleum microcrystalline wax, 9-13 parts of citrate, 13-23 parts of calcium stearate, 4-10 parts of dithiocarbamate, 20-27 parts of inorganic filler and 2-5 parts of surfactant. The cable sheath material is scientific and reasonable, a produced sheath has excellent physical properties, and a product has strong wear resistance, tensile strength, tear strength and resilience; the material has good heat resistance, flame resistance, radiation resistance, ozone resistance, acid and alkali resistance, chemical resistance, low production cost and long service life.

The invention discloses a crystal whisker corrugated pipe. The crystal whisker corrugated pipe is prepared from the following raw materials in parts by weight: 96-100 parts of high-density polyethylene, 2-3 parts of basic magnesium sulfate crystal whisker, 2-3 parts of calcium carbonate crystal whisker, 2-3 parts of bone charcoal, 1-2 parts of ethyl naphthol, 1-2 parts of ammonium polyphosphate, 0.7-1 part of palm oil, 2-3 parts of precipitated barium sulphate, 1-2 parts of 1,4-cyclohexanedimethanol, 0.6-1 part of butanedioic diisooctyl sodium sulfonate, 0.7-2 parts of glycerin triacetate, 1-2 parts of chitosan and 5-10 parts of compound filler. The corrugated pipe disclosed by the invention has very strong physical performance, friction resistance, impact resistance, high surface hardness, good weather resistance, good pressure resistance and excellent comprehensive performance.

The invention provides LDS (Laser Direct Structuring) coating capable of being activated by laser. The LDS coating is prepared from the following components in parts by weight: 50 to 70 parts of resin, 5 to 10 parts of LDS laser powder, 5 to 60 parts of a solvent, 10 to 30 parts of a curing agent, 2 to 10 parts of a curing accelerant, 0.5 to 2 parts of a dispersant, 0.3 to 1.5 parts of a de-foaming agent, 0 to 40 parts of filler and 0 to 1.5 parts of a flatting agent, wherein the LDS laser powder is a metal organic compound; the LDS laser powder comprises an organic matter outer layer and a metal inner layer; the organic matter outer layer is gasified under laser irradiation; the curing accelerant is a mixture of dimethylimidazole and cobalt naphthenate. According to the LDS coating provided by the invention, the dimethylimidazole and the cobalt naphthenate are used as the curing accelerant and the LDS coating can be cured within half an hour at room temperature. The LDS coating provided by the invention is applied to an antenna and the prepared antenna has a strong signal receiving capability and low production cost.