113results about How to "Play a bridging role" patented technology

The invention provides a compound temporary plugging agent used in temporary blocking turnaround fracture. The compound temporary plugging agent comprises a temporary plugging agent a and a temporary plugging agent b, wherein the temporary plugging agent a is selected from a rigid temporary plugging agent, the temporary plugging agent b is selected from an expansion temporary plugging agent. The invention further provides a compound temporary plugging method used in turnaround fracture in an oil field, and the compound temporary plugging method comprises the step that the temporary plugging agent a and the temporary plugging agent b are injected into fractures of an oil well in sequence. According to the compound temporary plugging agent provided by the invention, the rigid temporary plugging agent and the expansion temporary plugging agent are selected and skillfully used in a matched manner, so that the using efficiency and the refracturing success rate of the temporary plugging agent are improved greatly.

The invention presents an ultrasonic transducer (110) used in fluid medium (118). The ultrasonic transducer (110) comprises at least one casing cover (112) with at least one casing cavity (114), in which at least one transducer core (124) is installed. The transducer core (124) comprises at least one acoustic-electro transducer element (126). At least one damping element (156) is in contact with the casing cover (112), and is equipped at an outer side of the casing cavity (114) for damping solid state sound.

The invention relates to the field of drilling fluid plugging and discloses a resin emulsion plugging agent composition, a preparation method thereof and application of the composition in a fracturedstratum. The composition comprises a water-based resin emulsion, a curing agent, a coupling agent and nano lithium bentonite, wherein with the total weight of the composition as a standard, the content of the water-based resin emulsion is 90.5-95.8 wt%, the content of the curing agent is 3-7 wt%, the content of the coupling agent is 0.2-0.5 wt%, and the content of the nano lithium bentonite is 1-3wt%. The resin emulsion plugging agent prepared by the method has uniform and stable dispersion performance, is solidified under a high-temperature condition after being injected into a crack, and forms a solidified body with high strength and toughness, wherein the cementation strength between the solidified body and the wall surface of rock is high. The composition is particularly suitable fora leaking stratum with multi-scale cracks which are formed together.

The invention relates to a preparation method and application of a magnetic MOF composite and belongs to the technical field of material preparation. The preparation method comprises the following steps: preparing superparamagnetic ferroferric oxide nanoparticles by adopting a solvent thermal process, taking superparamagnetic ferroferric oxide as a core, coating a silicon dioxide shell on the surface of ferroferric oxide by adopting a hydrolysis method, so that Fe3O4@SiO2 nanoparticles are obtained, dissolving ferric trichloride hexahydrate and terephthalic acid into methylene formamide (DMF) to obtain DMF mixed liquor, then adding the Fe3O4@SiO2 nanoparticles and the DMF mixed liquor into a reaction kettle, and reacting, so that the magnetic MOF composite is obtained. The magnetic MOF composite can be used for adsorption of organic dye methylene blue.

The invention discloses a compound artificial board adhesive and belongs to the technical field of sheet material auxiliary agents. The compound artificial board adhesive disclosed by the invention isprepared from an inorganic binding agent, macromolecular resin, a biomass binding agent, a wetting agent and filling, wherein the inorganic binding agent is prepared from sodium silicate, nano oxideand carbonized rice husk fibers; the macromolecular resin is prepared from modified urea-formaldehyde resin, organic silicon, hydrogenated petroleum resin and a curing agent; the biomass binding agentis prepared from a plant extracting solution, sticky rice juice and humic acid; the plant extracting solution is obtained by mixing bagasse and fructus fici caricae, and extracting by utilizing de-ionized water. The compound artificial board adhesive provided by the invention has good water resistance and the bonding strength is effectively improved.

The invention provides elastic-tough well cementation cement paste suitable for coalbed methane. The elastic-tough well cementation cement paste comprises the following components in parts by weight:100 parts of oil well cement; 12 to 15 parts by weight of water-soluble resin; 0.8 to 4 parts by weight of fibers; 7-9 parts by weight of nanoparticles; 35-48 parts by weight of water. Compared with the prior art, the nanoparticles are used for regulating and controlling the hydration reaction of the cement paste; meanwhile, micropores in set cement are filled, the compactness of the set cement isimproved, and the strength is optimized; meanwhile, the added fibers not only can play a bridging role in cracks, but also can form a compact net-shaped structure in set cement to absorb external force impact and improve the tensile strength of the cement; in addition, the water-soluble resin is added as a cementing material, so that the cementation between the plugging materials and between theplugging materials and the surfaces of the cracks can be improved, the stability of the plugging structure is further improved, and the elasticity and toughness of the cement paste can be improved asthe resin material has better elasticity and toughness.

The invention relates to modified rubber concrete and a preparation method thereof, and belongs to the technical field of concrete processing. A sodium hydroxide solution is used to soak rubber powder, so that some auxiliaries in the rubber are converted into soluble sodium salts to remove, so that chemical impurities which prevent rubber from being combined with concrete are reduced; rubber powder is treated with hydrogen peroxide under a weakly acidic condition, so that nonpolar carbon-carbon double bonds on the surface of the rubber are greatly oxidized into carbonyl groups; under the weakly basic condition, the carbonyl groups and urea are subjected to addition condensation, imidogen, acylamino and the like are introduced into the rubber surface, the acylamino is a strongly polar hydrophilic group, the carbonyl group and N-H bonds on the acylamino can act with cemented products through relatively strong hydrogen bonds, so that interface adhesion strength of rubber concrete is strengthened; meanwhile, basalt fibers are coopered to achieve the bridging effect, so that a micro strain change value increase rate is slower, expansion of cracks is restrained very well, impact resistance is improved, low-temperature cracking property of concrete can be effectively improved, and mechanical property and breaking strength of concrete are strengthened.

The invention provides a hydrotalcite-intercalated flame-retarding-enhanced polypropylene material and a preparing method thereof, and relates to the technical field of polymeric composite materials. The hydrotalcite-intercalated flame-retarding-enhanced polypropylene material is prepared from polypropylene, a light stabilizer, a lubricating agent, modified hydrotalcite, a compatilizer, an antioxidant and an assistant. The hydrotalcite-intercalated flame-retarding-enhanced polypropylene material has the high strength, the heat stability and the flame-retarding performance.

The invention relates to a stone mastic asphalt mixture using recycled fan blade waste as a filler. The mixture comprises the following components in parts by weight: 6-9 parts of SBS modified asphalt, 8-12 parts of lignin fibers and fan fibrous waste, 100-150 parts of crushed stones, 4-6 parts of fan powder waste and 1-5 parts of fan blocky waste. In the mixture, the particle size of the fan powder waste is smaller than 0.075 mm, the particle size of the fan fiber waste is larger than or equal to 0.075 mm and smaller than 9.5 mm, the length-width ratio of the fan fiber waste is larger than 10, the particle size of the fan block waste is greater than or equal to 9.5 mm, aggregate except asphalt in the stone mastic asphalt mixture meets the grading requirement of the national stone mastic asphalt mixture, and the SBS modified asphalt adopts No.90 matrix asphalt. By means of the size synergistic effect of the fan fiber waste materials of various sizes, the fan blade waste materials, thelignin fibers and the crushed stone aggregates form a better interlocking framework structure and dense filling in the stone mastic asphalt mixture, and the anti-cracking performance and the anti-rutting performance of the material are improved.

The invention discloses a wear-resisting and low-temperature-resisting cable material. The wear-resisting and low-temperature-resisting cable material is prepared from, by weight, 20-30 parts of hydrogenated butadiene-acrylonitrile rubber, 50-70 parts of silicone rubber, 30-40 parts of solution polymerized styrene-butadiene rubber, 60-80 parts of a composite filler, 4-6 parts of epoxidized soybean oil, 20-30 parts of magnesium hydroxide, 10-20 parts of microencapsulation red phosphorus, 1-2 parts of Si69, 1-2 parts of sulphur, 0.3-0.5 part of di-tert-butyl peroxide, 0.1-0.3 part of an accelerant, 1-3 parts of a rear earth stabilizer, 1-3 parts of a Ca/Zn compound stabilizer, 0.3-0.5 part of anti-oxidant and 2-4 parts of paroline. The composite filler is prepared from nanosilicon dioxide, modified carbon fiber and modified kieselguhr. The wear-resisting and low-temperature-resisting cable material is good in low temperature resistance, high in wear resistance and good in mechanical performance.

The invention relates to a super strong cross laminated film self-adhesive waterproof coiled material which sequentially comprises an isolation protection layer, a non-asphalt-based self-adhesive layer, a strong cross laminated film, an asphalt self-adhesive layer and a PE isolation film from top to bottom, one side of the upper surface of the coiled material is a lap joint edge, and the other side of the lower surface of the coiled material is also provided with a lap joint edge. The bonding performance of the waterproof coiled material provided by the invention and post-cast concrete is better than that of an asphalt-based coiled material; the waterproof coiled material can be better bonded with a main body structure (namely a pre-laid reverse-bonding coiled material), the strong cross laminated film in the middle of the coiled material has good ductility, the coiled material can still be well bonded with the main body structure when a base layer slightly sinks or the main body structure slightly deforms, the coiled material cannot be separated, and a good waterproof effect can be achieved.

The invention provides a polypropylene-based thermoplastic shielding material for a cable and a preparation method of the shielding material. The shielding material comprises the following componentsin parts by weight: 100 parts of ethylene-propylene block copolymer polypropylene, 3-20 parts of conductive carbon black, 0.5-1.5 parts of high-conductivity graphene, 0.5-1.5 parts of a coupling agentand 1.4-4.5 parts of an auxiliary agent, wherein the auxiliary agent comprises an antioxidant, a lubricant and an anti-bonding agent; and the mass fraction of ethylene fragments in the ethylene-propylene block copolymer polypropylene is 5%-30%. According to the shielding material in the invention, the problem that mechanical properties are reduced due to the fact that high-content conductive carbon black needs to be added for improving the conductivity of a conventional polypropylene-based thermoplastic shielding material for the cable is solved, and the polypropylene-based thermoplastic shielding material for the cable in the invention has excellent conductivity and mechanical properties, and still has excellent conductivity and mechanical properties under a high-temperature condition through cooperation among the ethylene-propylene block copolymer polypropylene, the conductive carbon black and the high-conductivity graphene.

The invention discloses ultraviolet curing white base paint and a construction process on the medium density fiber by using same. The ultraviolet curing white base paint comprises the following components in parts by weight: 20-35 parts of urethane acrylate, 20-30 parts of modified polyester acrylate, 15-20 parts of monomer, 10-20 parts of filler, 3-5 parts of photoinitiator, 0.5-1 part of anti-settling agent and 0.2-0.3 parts of defoaming agent. The construction process of the invention comprises the following steps: firstly spraying quick-drying water-based white base paint on a bottom plate, polishing, coating the ultraviolet curing white base paint on the bottom plate once, performing ultreviolet curing, polishing, and then coating polyurethane (PU) colored paint. Compared with the traditional process, the adhesive force of the base paint used in the construction process of the invention is not lower than that of the base paint used in the traditional process, or even higher; and the operation is simple, the construction time is short, the efficiency can be greatly increased, the energy can be saved and the emissions of the volatile organic compound (VOC) can be greatly reduced.

The invention relates to a flexible bionic active pigment printing formaldehyde-free bonding agent and preparation method and application thereof. The bonding agent comprises acyloxy hydroxyalkyl polysiloxane, acrylic acid, methacrylic acid, acrylic monomers, acrylamide, styrene, vinyl acetate, acrylonitrile, N-glycidyl acrylamide, unsaturated strongly hydrophilic monomers and reactive surfactant which are subjected to copolymerization and condensation reactions in cooperation with initiator, and the flexible bionic active pigment printing formaldehyde-free bonding agent is prepared. The bonding agent is free of formaldehyde, the color fastness meets the corresponding national standards, the agent can be used for pigment printing as well as pigment dyeing, the printed or dyed fabric is very soft in hand feeding, and the bonding agent has the advantages of being free of being sticky to rolls and blocking screens, stable in property, high in color fastness and the like.

The invention belongs to the field of crude-oil sewage treatment, and more particularly relates to a crude-oil sewage treating agent. The crude-oil sewage treating agent comprises a demulsifying agent, a flocculating agent and a solvent, wherein the mass ratio of the demulsifying agent, the flocculating agent and the solvent is 25:1:74. The crude-oil sewage treating agent has the beneficial effects that the non-ionic type surface active agent is adopted, the oil-water interface of emulsified particles can be quickly reached, a water layer is released, so that emulsified oil drops are free; simultaneously the molecules of the surface active agent also can play a role of bridging, the oil drops are effectively condensed, the upward floating of the oil drops is accelerated; and in addition, good compatibility of the non-ionic type reagent is beneficial to the synergistic effect of multiple chemical components, and the purpose of multiple functions with one agent in the process of sewage treatment is realized.

The invention discloses a haze inhibitor. The haze inhibitor comprises cationic polyacrylamide, a calcium salt, polyol or polyacid salt, a penetrant and water. The cationic polyacrylamide (CPAM) used in the invention has good water solubility, fast dissolving speed, strong water absorption and strong water retention, and can maintain the humidity of an application position; the CPAM has various reactive groups, and the CPAM and various substances, such as aerosol and tiny dusts in air undergo an affinity action to adsorb, agglomerate and coagulate the various substances in order to form block substances, so afresh dust flying is prevented; the calcium salt and the polyol or polyacid salt used in the invention respectively have good moisture retention, have a bridging effect in the formula, and can well link particles; the haze inhibitor can be absorbed by plants, has no damages to vegetations and dose not cause secondary pollution to environment; and a preparation method of the haze inhibitor is simple, can be locally implemented in municipal administration and environmental protection works, and is easy to promote.

The invention provides a fiber-reinforced concrete material and a preparation method thereof, and relates to the technical field of concrete materials. The fiber-reinforced concrete material is prepared from the following raw materials: modified bentonite, layered hypophosphite, silicate cement, a fiber material, steel fiber, boric acid, a reinforcing agent, an organic thickening agent and water.The fiber-reinforced concrete material provided by the invention is good in corrosion resistance, strong in sealing property, long in service life, good in strength and good in impact resistance; thebonding of the modified bentonite and the layered hypophosphite with a silicate cement matrix is good, and in the cement matrix, the modified bentonite and the layered hypophosphite are uniformly distributed and are good in dispersity; after the modified bentonite, the layered hypophosphite and the silicate cement are added to prepare the concrete material, the prepared concrete material is high in strength and good in heat stability; by embedding of the fiber material and the steel fiber into a silicate cement matrix, the comprehensive dynamic and mechanical properties such as impact resistance, anti-freezing property and durability of the concrete material are enhanced.

The invention provides an anatomical tibia far-end inner-side bridge-type bone fracture plate and belongs to the field of medical apparatuses. The anatomical tibia far-end inner-side bridge-type bone fracture plate comprises a top side surface, a bottom side surface and a group of screw holes, wherein the bottom side surface is used for being in contact with a bone, the screw holes are distributed at two ends of the anatomical tibia far-end inner-side bridge-type bone fracture plate, and the bottom side surface of the anatomical tibia far-end inner-side bridge-type bone fracture plate is in an anatomical shape of a tibia inner side bone surface and is used for being adhered to the inner side bone surfaces of the far section and middle section of a tibia. The anatomical tibia far-end inner-side bridge-type bone fracture plate disclosed by the invention is suitable for tibia fracture, is especially used for treating tibia far-end bone fracture through an MIPO (Minimally Invasive Plate Osteosynthesis) technology, and can enable the bone fracture to be healed up better.

The invention relates to the technical field of solar energy, in particular to a silver conductive paste for solar cell and a preparation method thereof, wherein the silver conductive paste for solarcell comprises conductive silver powder, inorganic glass powder, organic carrier and nanometer zinc; Based on 100 parts by weight of the silver conductive paste for solar cells, the conductive silverpowder 45- 65 part, inorganic glass powder 2- 7 part, organic carrier 35- 45 part, nanometer zinc 0.3- 0.7 part; The conductive silver powder is prepared from two kinds of conductive silver powder with particle size of 1- 5 u m and 20 u m- 40 u m silver powder mixture with a particle size of 1- 5 u m silver powder is spherical silver powder with a particle size of 20-40um silver powder is flake silver powder, and the weight ratio of particle size is 1- 5 u m silver powder and 20-40 u m. silver powder is 1: 1.2- 1.6. The silver conductive paste of the invention can improve the solar energy conversion efficiency, and the metal film formed after sintering and the silicon substrate are firmly bonded.

The invention discloses a conductive polymer binder and a preparation method and applications thereof, and belongs to the technical field of lithium ion batteries. The preparation method comprises following steps: dissolving PVP into a reaction medium; adding steamed aniline monomers, keeping on stirring, carrying out polymerization under the action of an initiator to generate a dark green solution, filtering, and washing to obtain PVP-PANI dark green powder. The conductive polymer binder is applied to the silicon base negative pole of a lithium ion battery. The provided conductive polymer binder has the advantages that the multiplying power and low temperature performance of a battery can be improved; the binder has a large amount of carbonyl groups and lactam polar groups and thus is affinity with carbonate electrolyte; due to good electron conductivity of PANI, the dynamic performance of a battery core is obviously enhanced; and the multiplying power and low temperature performanceof the battery core are greatly strengthened.

The invention provides well cementing cement paste suitable for coal bed methane. Compared with the prior art, a multi-size-fraction leaking stoppage material, an active filler and a resin material are added into the cement paste to form a leaking stoppage type cement paste system, in the multi-size-fraction leaking stoppage material, the first-stage particle leaking stoppage material serves as asupporting material, and the bridging effect can be achieved to support cracks; gaps are filled with a second-stage particle leaking stoppage material, cement particles and the like to form a leakingstoppage frame, and a hydrophilic fiber leaking stoppage material can form a fiber grid structure in a crack, so that the stability of a cement paste leaking stoppage structure is improved; a resin cementing material is used for further enhancing the mutual cementing among the crack surface, the leaking stoppage material and the cement; therefore, the compactness of the leaking stoppage structureis improved through multistage filling of the bridges, the elasticity, the nano materials and the cement particles, and meanwhile, the addition amounts of the modified multi-size-fraction leaking stoppage material, the active filler and the resin material are adjusted, so that the combined action of the modified multi-size-fraction leaking stoppage material, the active filler and the resin material has a remarkable synergistic effect on the leaking stoppage performance of the cement paste.

The invention relates to a CNTs reinforced WC-Co hard alloy material and a preparation method thereof. The preparation method of the embodiment comprises the following steps: adding CNTs into an acid solution for oxidation modification treatment; the CNTs subjected to oxidation modification are added into a cobalt salt solution, an alkaline solution is added after even stirring, cobalt ions are converted into cobalt hydroxide particles, suspension liquid of the CNTs loaded cobalt hydroxide particles is obtained, and the pH value of the suspension liquid ranges from 8 to 11; heating the suspension to 55-90 DEG C, then adding a reducing agent, and then filtering, cleaning and drying the product to obtain CNTs loaded cobalt nanoparticle composite powder; and the composite powder, WC powder and Co powder are subjected to ball-milling mixing according to a preset proportion, and then the CNTs reinforced WC-Co hard alloy material is obtained through the steps of forming and spark plasma sintering. CNTs loaded with cobalt nanoparticles are adopted as a reinforcing phase, so that the problem of CNTs agglomeration in the ball milling process can be effectively solved, the CNTs are dispersed in a cobalt binding phase as much as possible, and the mechanical property of the WC-Co hard alloy is improved.

The invention relates to a insulating copolyamide 6T composite material with high thermal conductivity and a preparation method thereof. The insulating copolyamide 6T composite material with high thermal conductivity is prepare from the following raw materials: copolyamide 6T, fatty polyamide resin, toluene diisocynate, 2, 2'-(1,3-phenylene)-bisoxazoline, a coupling agent, boron nitride, aluminum oxide, silicon carbide, N, N'-bis (2,2,6,6-tetramethyl-4-piperidyl)-1, 3-phthalic diamide and bis (2,6-ditert butyl-4-methyl phenyl) pentaerythritol phosphodiester. The insulating copolyamide 6T composite material with high thermal conductivity has the characteristics of high heat conductivity coefficient, high tensile strength, high flowability, low water absorption and good insulating property, and can be applied to industrial fields, such as electronic and electrical industry, LED and automobiles.