21results about How to "Increase elastic strength" patented technology

The invention belongs to the technical field of thickened oil development, and particularly relates to a displacement exploitation method with controllable thickened oil activity. According to the displacement mining method with the controllable heavy oil activity, firstly, fracture development condition analysis is conducted on oil reservoir crude oil reserves, then different slugs are adopted for heavy oil mining according to the fracture development condition, and a water plugging agent, a composite viscosity reducer and a CO2 synergistic huff and puff mode and a CO2 response type alkyl amidine surfactant are adopted in the different slugs; the plugging agent can generate good water channeling plugging, viscosity reduction, gas channeling plugging and other effects, has good oil displacement capacity, can greatly improve the recovery efficiency, and is suitable for heavy oil recovery under harsh conditions.

The invention belongs to but not limited to the technical field of hydrogel, and particularly relates to a processing method of tough, transparent and adhesive supramolecular hydrogel, which comprises the following steps: step 1, preparing a supramolecular hydrogel precursor with a specific shape; step 2, dissolving the prepared precursor in water; step 3, freezing under a low-temperature condition; step 4, standing the frozen supramolecular hydrogel in air or dry inert gas; step 5, cutting and folding the obtained hydrogel, and processing the hydrogel into another shape; and 6, swelling the processed hydrogel in an acid-containing nutrient solution to obtain the final hydrogel. By adopting a supramolecular strategy and utilizing a high-density supramolecular network formed by tannic acid (TA) and polyvinyl alcohol (PVA), the mechanical property, transparency and adhesiveness of the hydrogel are remarkably improved.

The present invention discloses a low hysteresis, low temperature resistance, fatigue resistance soy protein composite gel electrolyte and a preparation method thereof, comprising: heating a soy protein aqueous solution to obtain a soy protein dispersion; mixing the soy protein dispersion and acrylamide to obtain a prepolymer; adding a crosslinking agent and an initiator to the prepolymer, heating the reaction to obtain a soy protein composite hydrogel; immersing the soy protein composite hydrogel in an ammonium sulfate solution first, and then immersing it in a zinc chloride and lithium chloride salt solution to obtain a low hysteresis, low temperature resistance, and fatigue resistance soy protein composite gel electrolyte. The hydrogel prepared by the present invention is a chain entanglement structure, and has the characteristics of low hysteresis at low temperature, high fatigue resistance, and the like.

The invention discloses positive electrode lead paste for a deep-discharge high-cycle lead storage battery and a preparation method of the positive electrode lead paste, and belongs to the technical field of lead storage batteries. The porous carbon microbeads and the carbon whiskers are added and have electrical conductivity, so that the softening time of active substances is prolonged, the strength is improved, and the service life of the storage battery is prolonged; the nano white carbon black and the sodium carboxymethyl cellulose are both of a porous structure and are added into the active substance, so that the storage space of the electrolyte is increased, and the capacity and the discharge depth of the polar plate are improved. The four substances have a synergistic effect, so that the deep discharge capacity of the lead storage battery is increased, and the cycle life is prolonged (8%).

The utility model discloses an anti-pulling scratch-resistant elastic flexible cable, which relates to the technical field of cables, and comprises an outer protective layer and six groups of conductors, the circumferential outer wall of each conductor is provided with an insulating layer, the middle part of the outer protective layer is provided with a rebound core, the rebound core is arranged in the middle of the six groups of conductors, and the outer protective layer is provided with an outer sheath layer and an outer sheath layer. An inner sheath is arranged on the circumferential outer wall of the rebound core, a reinforcing layer is arranged in the outer sheath, a filling layer is arranged in the reinforcing layer, the conductor is made of an annealed copper conductor material, the insulating layer is made of a silicone rubber insulating material, and the insulating layer is extruded outside the conductor. According to the utility model, the cable has good rebound resilience and tensile strength and meets the elastic requirement in use, and the sheath has good scratch resistance, so that the surface of the sheath is not damaged or scratched when the cable is scratched by sharp corners such as stones, angle iron and the like.

The utility model relates to a wiring terminal block with a protection structure, which aims at solving the technical problem that the protection structure on the wiring terminal block is inconvenient to mount or dismount at present, and comprises a wiring terminal block body, a protection assembly and a plugging assembly, the protection assembly is arranged on the wiring terminal block body; the protection assembly comprises a protection shell, a protection cover, a wiring groove and a shielding wire groove. The protective shell is sleeved on the wiring terminal block body; the protective cover is connected with the protective shell through a plug-in assembly; the protective shell is provided with a wiring groove, and the wiring groove is arranged above the wiring port of the wiring terminal block body. The protective shell is provided with a shielding wire duct, and the shielding wire duct is arranged above the shielding wire interface of the wiring terminal block body. The plug-in assembly comprises a plug-in groove and a plug-in block; two inserting grooves are symmetrically formed in one side, close to the protective cover, of the protective shell; the two inserting blocks are symmetrically and fixedly arranged on one side, close to the protective shell, of the protective cover; according to the utility model, the protective shell and the protective cover can be conveniently mounted or dismounted.

The invention provides an elastic conductive nanofiber-based composite material and a preparation method and application thereof.The preparation method comprises the steps that S1, metal salt is added into an organic mixed solvent to be evenly mixed, then a high-molecular polymer is added, mixing continues to be conducted, and an electrostatic spinning solution is prepared; s2, injecting the electrostatic spinning solution into an injector, and preparing a metal salt / high-molecular polymer nanofiber composite membrane through electrostatic spinning; and S3, the prepared metal salt / nanofiber composite membrane is placed in a reducing solution for reduction, and after drying, the metal / nanofiber composite membrane is prepared. The multifunctional composite membrane material prepared by the invention has the characteristics of high conductivity, flexibility, high mechanical strength, good comfort and the like, and has huge potential in the fields of miniature electronic equipment, human body wearing, aerospace and the like.

The invention discloses an anti-residue PE protective film and a preparation method and application thereof. The anti-residue PE protective film comprises a PE original film; an adhesive layer is arranged on the upper surface of the PE original film; wherein the adhesive layer is prepared by coating a PE original film subjected to surface treatment with an adhesive, and the adhesive comprises the following raw materials in parts by weight: 60-100 parts of high molecular weight polyisobutene, 10-50 parts of methyl vinyl silicone rubber, 10-50 parts of low molecular weight polyisobutene, 30-70 parts of a plasticizer and 1-5 parts of an antioxidant; wherein the plasticizer is a compound of naphthenic base oil and chain alkyl base oil. According to the anti-residue PE protective film as well as the preparation method and the application thereof, the surface roughness of the PE original film is increased by performing surface treatment on the PE original film, the adsorption capacity of the PE original film and an adhesive is further improved, and the formula of the adhesive is optimally designed, so that the adhesive layer and the PE original film have better adaptability and proper peel strength; the residue resistance of the PE protective film is improved.

The utility model provides a dry-type transformer coil using silicone rubber as coil external insulation, which comprises a coil formed by combining a plurality of layered wires and insulating materials for isolating the interlayer wires, and is of an integrated structure formed by pouring and curing the coil through liquid silicone rubber and then pouring and curing the coil through epoxy resin. The insulation system has better elasticity and tensile strength and can adapt to the change of mechanical internal stress when the load fluctuates frequently, and the mechanical strength and the electrical performance of the coil are not affected.

The invention relates to a fast-strength long-acting high-toughness high-elasticity waterproof bonding layer material and a preparation method thereof. An asphalt component and an epoxy material component are taken as main bodies of the bonding material. In order to realize the characteristics of a high-toughness and high-elasticity bonding layer, a modifier needs to be added into an asphalt component. As a waterproof binding material which can be used at normal temperature, the stability and dispersibility of asphalt components need to be ensured, so that the construction workability of the waterproof binding material is ensured. In consideration of application of the waterproof binding material in road engineering and constructional engineering, the waterproof binding material needs to have the characteristics of early strength and quick drying, so that the influence of curing time on construction is reduced, and particularly, the requirement of opening traffic as soon as possible in road engineering construction can be met. In addition, the waterproof binding material needs to have the long-acting and durable advantages, the diluted asphalt subjected to compound modification of the butadiene-styrene-butadiene segmented copolymer, the polyoxyethylene and the liquid rubber is selected to be subjected to cross-linking combination with the epoxy material, and the curing agent is added to achieve the short-term curing effect.

The utility model provides a kind of processing equipment of high elasticity pick racket, belong to racket processing technical field, including core pressing subassembly, including base, the support platform of fixed connection in base end part, the positioning mode of sliding installation in support platform middle, fixed connection in the side wall of support platform's stand, and the pressing block of sliding connection in the side wall of stand, and upper die is fixedly connected in the end of pressing block;Pressure maintaining component, including fixedly connected in the side wall of support platform's shell, fixedly connected in the side wall of shell's fixed plate, slidingly inserted in the end of fixed plate's connecting plate, and the pressing plate of fixedly connected in the end of connecting plate.The utility model has the beneficial effects that: by the cooperation of core pressing subassembly and pressure maintaining component;Ensure that core body and sheet material are preliminarily pressed and fit tightly when guaranteeing pressing process without deviation, improve product consistency, ensure that core body, sheet material and carbon sheet are tightly combined, improve the elasticity and structural strength of racket, and can flexibly adapt to the processing needs of sheet material of different thickness.

The invention discloses a lightweight concrete drainage pipe, and belongs to the field of non-metallic material engineering. The concrete is composed of concrete and a fiber resin composite main body, the concrete is composed of the following components: Portland cement, modified volcanic ash powder, slag powder, silica fume, metakaolin, quartz sand, a water reducing agent, magnesium silicate, modified graphene, recycled aggregate and water, and the modified graphene is a concrete additive; and the fiber resin composite main body is covered with concrete. The technical effects of reducing the weight of the drainage pipe and improving the comprehensive performance of the material are achieved.

The invention discloses polyethylene-butylene rubber and a preparation method thereof, and belongs to the field of rubber. The polyethylene-butylene rubber has a triblock structure, polyethylene chain links are mainly arranged at two ends, a polyethylene / poly (1-butylene) random chain link with higher side group content is arranged in the middle, the special structure of the polyethylene-butylene rubber gives good elasticity and tensile strength to the rubber, and the polyethylene-butylene rubber can be used as a polyolefin thermoplastic elastomer and has the characteristics of good physical and mechanical properties and easiness in processing; more importantly, the E-BEB-E has excellent thermal aging resistance, and the E-BEB-E can be used for modifying polyolefin resin to prepare a thermoplastic E-BEB-E / polyolefin elastic material (TPV) and a PP / E-BEB-E thermoplastic hard alloy.

The invention discloses a conductive rubber foam material and a preparation method thereof, and relates to the technical field of rubber foam materials. The conductive rubber foam material is prepared from the following components: 50-65 parts of natural rubber, 20-25 parts of butyl rubber, 10-15 parts of butadiene rubber, 4-12 parts of modified carbon fiber, 5-10 parts of carbon black, 1-2 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of zinc stearate, 0.5-1.2 parts of 1,4-bis-tert-butylperoxyisopropylbenzene, and 1.5-2.8 parts of azodicarbonamide. The invention realizes good conductive performance and antistatic effect by reasonably proportioning natural rubber, butyl rubber and butadiene rubber, and combining the synergistic effect of modified carbon fiber and carbon black. Meanwhile, the material maintains the excellent mechanical properties and elasticity of rubber, has appropriate porosity and density, meets various requirements of sole materials, and further improves its comfort and lightweight characteristics.

The utility model discloses an anti-deformation spring mattress which comprises a mattress body, anti-deformation structures are fixedly connected to the four corners of the upper end of the mattress body, a latex layer is jointly and fixedly connected to the upper ends of the four anti-deformation structures, and a hard sponge layer is fixedly connected to the upper end of the latex layer. The joint of the mattress main body and the latex layer is fixedly connected with a cotton and linen separation net, the upper end of the mattress main body is fixedly connected with a spring structure, the lower end of the mattress main body is fixedly connected with a heat insulation pad, and the spring structure is located below the latex layer and located among the four anti-deformation structures. According to the anti-deformation spring mattress disclosed by the utility model, the anti-deformation structure and the spring structure are arranged, so that the mattress has double limiting performance, the anti-deformation strength of the mattress is improved, the elasticity of the mattress is prolonged, the use stability of the spring mattress is stronger, the situation that the mattress is partially sunken after being used for a long time can be avoided, and the use effect of the mattress is improved; the elastic strength of the spring mattress is increased, and the use comfort of the mattress is improved.

The present invention discloses a polyurethane composite material for multi-use comfort footwear and a preparation method thereof, and belongs to the technical field of polyurethane composite materials. The present invention adopts solid ball shear thickening liquid capsules and hollow ball expandable beads to perform virtual and real two-phase reinforcement of polyurethane foam. Under the premise of ensuring that the density of the foam material remains basically unchanged, it can not only improve the mechanical properties of the foam composite material but also enhance its energy absorption efficiency, and improve the stress sensitivity, and have a certain damping effect on the external load. At the same time, the reaction occurs at room temperature and can be cured at room temperature, which reduces energy consumption and is conducive to large-area application. The two-phase reinforced polyurethane foam composite material of the present invention has an energy absorption efficiency several times higher than that of conventional polyurethane foam, and the energy absorption can reach 57.2162KJ / m 3 , compression strength reaches 3.0888MPa, maintaining apparent density of 0.311g / cm 3 ‑0.351g / cm 3 .

The invention discloses a polyurethane foam material and a preparation method and application thereof, and belongs to the technical field of polyurethane, the preparation method comprises the following steps: adding polyether polyol, a chain extender, a catalyst and isocyanate into a reaction kettle, heating and stirring, and carrying out vacuum defoaming after heating and stirring to obtain initial polyurethane; the preparation method comprises the following steps: adding initial polyurethane and an auxiliary agent into an internal mixer for mixing, and then pressing into sheets to obtain a polyurethane processing material; adding the polyurethane processing material into a reaction kettle, then introducing a foaming agent, pressurizing and heating, and cooling and relieving pressure after the pressurization and heating are finished, so as to obtain the polyurethane foaming material. The polyurethane foaming material prepared by the invention has excellent dimensional stability and heat insulation property, and can be widely applied to preparation of packaging materials and building materials.

The minced fillet is used as a raw material to produce the meat ball food, and the product is rich in high-quality protein and high in nutritional value. A physical fishy smell removing method and a biological fishy smell removing method are combined, so that the fishy smell of the minced fillet is effectively removed. The protease inhibitor is prepared from 5-10 parts of defatted soybean meal, on one hand, the activity of protease in wall-broken yeast liquid is inhibited, and on the other hand, the activity of endogenous protease in fish meat is inhibited, so that degradation of the protease to fish meat protein is inhibited, the gel property and the water-retaining property of the fish meat protein are effectively improved, and the elasticity and the gel strength of the fish balls are enhanced. According to the invention, the fishy smell-removed minced freshwater fish meat ball food can be obtained, and the fishy smell-removed minced freshwater fish meat ball food has the nutritional value of fish meat, proper gel strength, relatively good viscoelasticity and tender and elastic mouth feel.

The utility model discloses a refrigeration appliance packaging box which comprises a supporting plate, filling plates are arranged on the two sides of the upper end face of the supporting plate, and the filling plates are filled with elastic blocks. And a hollow groove and a rib are arranged in the main body of the elastic block on one side. The filling plate is filled with the elastic blocks, the hollowed-out grooves are formed in the main body of the elastic block on one side, the ribs are arranged between the hollowed-out grooves at equal intervals, the ribs are matched with the hollowed-out grooves so that transmitted pressure can be dispersed, the rebound resilience and the supporting strength of the elastic blocks can be enhanced, and compared with solid elastic blocks in the prior art, the buffering performance is effectively improved; the transport vehicle can better adapt to contact surfaces at the bottoms of different electric appliances, and can provide better protection when transporting large refrigeration electric appliances.

The invention belongs to the technical field of oil exploitation, and particularly relates to a foaming agent for nitrogen foam fracturing and a preparation method and application thereof. The preparation method comprises the following steps: (1) sequentially adding trimethylolpropane tri (3-aziridinyl propionate), an organic solvent and 1-amino-3, 6, 9, 12, 15, 18-hexaoxaheneicosan-21-acid into a reactor, adjusting the pH value to 2-3 by using hydrochloric acid, and carrying out heat preservation reaction; (2) adding alkyl halide into the reactor, adjusting the pH value to 8-9 by using sodium hydroxide, carrying out heat preservation reaction, irregularly detecting the pH value in the reaction process, and maintaining the pH value to 8-9 by using sodium hydroxide; and (3) carrying out reduced pressure distillation on the mixed solution in the step (2) to obtain a viscous solid, and drying to obtain the foaming agent for nitrogen foam fracturing. The foaming agent for nitrogen foam fracturing has the advantages of good foaming and foam stabilizing effects and large liquid carrying capacity.

The present invention relates to a badminton exerciser and a method for using the same, comprising a shell, handles symmetrically and movably mounted at both ends of the shell, a tensioned elastic band mounted inside the shell, the two ends of the elastic band passing through the middle of the shell and respectively connected to the handles at both sides, and the elastic force is effectively controlled by an elastic force controller. The present invention has a simple structure and a reasonable design, can effectively train wrist strength, and can gradually increase the elastic force strength as the training progresses, while strengthening muscle memory, coordinates the corresponding force of fingers, wrists, forearms, upper arms and shoulder joints, so as to achieve effective control of strength and movement.