32results about How to "High elastic modulus" patented technology

The invention provides a thickening agent for an oil field fracturing fluid, a preparation method of the thickening agent and the fracturing fluid, and belongs to the technical field of fracturing fluids. Comprising a polymer, a synergist, a salt-resistant component, a structure regulator, a suspending agent and an emulsifier. The polymer prepared by the invention contains abundant anions and cations, including quaternary ammonium salt cation structures, sulfonate anions and the like, and molecular winding can be realized through mutual attraction of the anions and cations, so that the elasticity modulus is increased, the sand-carrying performance is improved, and the sand-carrying and thickening performance of the thickening agent is improved; the fracturing fluid has good temperature resistance, salt resistance, shearing resistance, water solubility and thickening property, integrates the functions of drag reduction, sand carrying, fracture forming, swelling prevention, discharge aiding, low damage and the like, and has wide application prospects.

The invention belongs to the technical field of adhesives, and relates to an epoxy resin composition, an epoxy resin adhesive film and application thereof. The epoxy resin composition comprises epoxy resin, a curing agent, a flexibilizer, a filler and rosin modified phenolic resin, the curing agent at least comprises a latent curing agent, the flexibilizer at least comprises acrylate rubber, the softening point of the rosin modified phenolic resin is 120-180 DEG C, the acid value is 40-100 mgKOH / g, and the filler is a filler. The rosin modified phenolic resin with the specific softening point and acid value is introduced, and the types of the curing agent and the flexibilizer are limited, so that the damping loss factor of an epoxy resin adhesive film prepared from the epoxy resin composition is relatively low in the range of 0-100 DEG C, and the stability of the damping loss factor is relatively high; meanwhile, the adhesive also has the characteristics of high elastic modulus, high toughness, high peel strength, good normal-temperature storage stability and good high-temperature rapid reactivity.

The invention relates to the technical field of cosmetic preparations, and discloses a composition containing succinyl glycan and application of the composition to regulation and control of the repetition distance of a liquid crystal lamellar phase, the composition comprises a liquid crystal component and an effective amount of succinyl glycan, wherein the stratified phase repetition distance of liquid crystals in the composition can be effectively adjusted by adding the succinyl glycan, and the thermal stability of the composition is improved; small-angle X-ray scattering (SAXS) proves that the addition of the succinyl glycan enables the repetition distance of the lamellar phase of the liquid crystal to generate a measurable change of 6.2% to 19.4%; the invention provides a novel method for accurately regulating and controlling the liquid crystal structure of the cosmetic from the nanoscale, and the obtained composition has better stability, moisture retention and skin feeling in use.

The invention discloses a water-swelling elastic plugging agent for a water-based drilling fluid and a preparation method of the water-swelling elastic plugging agent. The water-swelling elastic plugging agent comprises the following components in parts by weight: 100 parts of a polyolefin elastomer matrix material; 15 to 20 parts of a reinforced matrix material; 0.8 to 1.5 parts of a polyolefin elastomer matrix material cross-linking agent; 8 parts to 15 parts of a reinforcing agent A; 20 to 30 parts of a reinforcing agent B; 15 to 30 parts of super absorbent resin; 15 to 20 parts of a plasticizer; 0.2 to 0.8 part of an isolating agent; 0.5 to 1 part of an anti-aging agent; the plugging agent provided by the invention is simple in preparation process, not only is beneficial to industrial production, but also is convenient to prepare plugging slurry on site, can achieve a good plugging effect, and provides an effective technical means for well leakage treatment.

The invention discloses a method for preparing a near-stoichiometric yttrium oxide coating at a high deposition rate as well as a product and application of the near-stoichiometric yttrium oxide coating, and relates to the technical field of semiconductors. The yttrium oxide coating is prepared by adopting a physical vapor deposition intermediate-frequency reaction magnetron sputtering technology, and the oxygen flow and the target voltage are dynamically regulated and controlled through a closed-loop feedback control system, so that the target material works in a transition area between a metal mode and an oxidation mode. The target material is located between a metal mode and an oxidation mode, the deposition efficiency of the coating is remarkably improved, and the coating has the near-stoichiometric ratio characteristic and better mechanical and corrosion-resistant performance.

This invention belongs to the field of engineered wood products manufacturing, specifically a method for preparing low-formaldehyde finger-jointed boards based on bio-based modified adhesives. The method includes preparing an adhesive composed of modified soybean protein, non-formaldehyde crosslinking agents, micro / nano cellulose, nano-silica, and epoxidized vegetable oil elastomers; pre-treating the wood and cutting the finger joints; applying a sealing liquid via atomization for end-face damping treatment; performing quantitative adhesive application and stepped butt joint molding; and employing a multi-stage hot-pressing process involving preheating penetration, high-temperature curing, and cooling and pressure holding. Through the above technical solution, this application can achieve the formation of a dense adhesive film at the finger joint interface, significantly improving bonding strength and stability while reducing formaldehyde release.

The utility model relates to the technical field of shoes, in particular to a high-strength springback slipper which comprises a sole, a vamp, an insole and a carbon fiber elastic piece, the sole and the vamp are integrally formed by EVA materials, the insole is also made of the EVA materials, the carbon fiber elastic piece and the insole are sequentially bonded to the top face of the sole, and the carbon fiber elastic piece is arranged on the top face of the sole. According to the slipper, the carbon fiber elastic sheet is compounded with the sole and the insole which are made of the EVA material, and the high-modulus material performs mechanical enhancement and pressure dispersion on the low-modulus matrix, so that the slipper has relatively high compressive strength, the slipper can still keep stable supporting force after being used for a long time, and the comfort requirements of scenes such as exercise recovery and long-time standing are met.

This utility model discloses a reflective film and a solar panel, relating to the field of solar photovoltaic power generation technology. The reflective film includes: an adhesive film layer; a microstructure layer disposed on the adhesive film layer; and a reflective layer disposed on the microstructure layer. The reflective layer, the microstructure layer, and the adhesive film layer are sequentially arranged from top to bottom to form a thin-structured reflective film. This utility model solves the problem that traditional reflective films use a multi-layer structure, resulting in a thicker reflective film product, which is not conducive to assembly in smaller gaps, and the multi-layer bonding structure also causes light energy attenuation.

The application discloses a construction linear control method for a large-span non-equal-span cast-in-situ box girder, and comprises the following measures: pre-camber optimization, theoretical deflection simulation based on a coupling model of the box girder and a movable formwork, model correction combined with pre-test, and selection of a sectional pre-camber design curve according to the span stiffness difference; deformation collaborative control, concrete pouring according to a layered sequence, control of the bottom form elevation and pouring interval time, and synchronous monitoring and coordination of the deformation of the movable formwork and the box girder; inter-span constraint control, rigid connection structure arranged in the unequal-span connection area to constrain the non-longitudinal displacement, and review of the elevation difference at the connection after pouring; stress adaptation control, real-time monitoring of the deflection and stress of the stress concentration area, and control through adjustment of the formwork elevation, adjustment of the pouring rhythm or addition of local reinforcing structure when the data is out of limit. The method can ensure that the bridge linear shape meets the design requirements and reduce the risk of structural stress concentration.

The invention provides an E7 peptide functionalized polyimide fiber scaffold as well as a preparation method and application thereof, and relates to the technical field of medical treatment. The E7 peptide functionalized polyimide fiber scaffold provided by the invention comprises a polyimide fabric, the surface of the polyimide fabric is coated with a polydopamine coating; and the surface of the polydopamine coating is coupled with E7 peptide. According to the E7 peptide functionalized polyimide fiber scaffold provided by the invention, the E7 peptide is combined with the PI fabric, so that the E7 peptide functionalized polyimide fiber scaffold has excellent mechanical properties, thermal stability, surface hydrophilicity and biocompatibility. The BMSCs can be effectively recruited, and the osteogenic differentiation capability of the BMSCs can be enhanced. The scaffold provides a novel material selection with mechanical strength and biological activity for tissue engineering repair of MIRCT, and has clinical potential.

This invention provides a chemically strengthened glass-ceramic and its preparation. The chemically strengthened glass-ceramic includes a glass-ceramic substrate and a compressive stress layer formed on the surface of the substrate through ion exchange chemical strengthening. The glass-ceramic substrate comprises crystal family 1 and crystal family 2. Crystal family 1 includes crystals having the following structural formula: (Zn x Mg 1‑x‑y Al 2‑2y (Al) 2y Mg y O4, wherein: 0≤x≤1; 0≤y≤1; and 0≤x+y≤1; the crystal group 2 includes zirconium oxide; the compressive stress layer has a CTLD_saf value of 15000~70000 MPa. Compared with the existing LAS microcrystalline glass system, the chemically strengthened microcrystalline glass of the present invention not only has excellent mechanical properties and impact resistance, but also significantly reduces the overall cost.

The invention discloses a creep-resistant magnesium alloy with high elasticity modulus and high damping and a preparation method thereof, and the creep-resistant magnesium alloy with high elasticity modulus and high damping comprises the following components in percentage by mass: 1.2%-3.5% of Zn element, 2.5%-12% of Gd element, 0.5%-6% of Yb element, 0.15%-1.2% of Ni element, 0.3%-0.8% of Mn element, 0-0.5% of Cu element, 0.1%-5% of HRE element and the balance of Mg element. The HRE element is one or more of a Dy element, a Sm element and a Tb element, and the mixing enthalpy delta H of the creep-resistant magnesium alloy with the high elastic modulus and the high damping is-1.1 kJ / mol to-0.2 kJ / mol. The creep-resistant magnesium alloy with high elastic modulus and high damping is suitable for the fields of aerospace, precise instruments, transportation, 3C electronics and the like, and has remarkable technical and economic values.

The invention provides a full-rubber-jacketed alternating current charging pile cable and a preparation method thereof, and belongs to the technical field of cables, and the full-rubber-jacketed alternating current charging pile cable is prepared by the following steps: mixing EPDM particles, modified diatomite, EVA particles, paraffin oil, nano zinc oxide, stearic acid, tetravinyl silane and epoxy isocyanate; adding dicumyl peroxide, uniformly mixing, carrying out extrusion molding, and carrying out heating vulcanization to obtain an insulating layer; chlorinated polyethylene, dioctyl phthalate, calcium stearate, stearic acid, white carbon black, chlorinated paraffin, crude paraffin, MgO, Sb2O3, tetravinyl silane and modified carbon black are mixed and internally mixed, epoxy isocyanate and DCP are added and evenly mixed, and a sheath layer is obtained through extrusion molding; and sequentially coating an insulating layer and a sheath layer on the periphery of the conductor to obtain the full-rubber-jacketed alternating current charging pile cable. The cable prepared by the invention has good wear resistance and flexibility.

The application discloses an ultrahigh molecular weight polyethylene-acrylonitrile butadiene rubber composite elastic material, which comprises 70wt%-95wt% of ultrahigh molecular weight polyethylene and 5wt%-30wt% of acrylonitrile butadiene rubber powder, has an island-sea structure, wherein the acrylonitrile butadiene rubber powder is a dispersed phase, the ultrahigh molecular weight polyethylene is a continuous phase, and the dispersed phase and the continuous phase are connected by C-C chemical bonds; and the particle size of the acrylonitrile butadiene rubber powder is less than or equal to 0.7mm. By limiting the content of the ultrahigh molecular weight polyethylene and the acrylonitrile butadiene rubber powder, combining the connection between the two phases by C-C chemical bonds and limiting the particle size of the acrylonitrile butadiene rubber powder, the rubber particles in the composite elastic material are first deformed when the composite elastic material is subjected to external force, so that the composite elastic material has good resilience and lower permanent deformation at a smaller strain.

The application discloses a titanium carbide and element powder modification method for 5-series aluminum alloy and an aluminum alloy composite material, and aims to solve the technical problems that in the existing additive manufacturing, due to the high content of Mg element in the 5-series aluminum alloy, the additive manufacturing is difficult, and the aluminum alloy composite material obtained by additive manufacturing has crack defects and poor densification effect due to thermal cracks and evaporation of strengthening elements. The modification method comprises the following steps: obtaining 5-series aluminum alloy powder; adding titanium carbide particles and element powder to the 5-series aluminum alloy powder for mixing to obtain mixed powder; after heat preservation treatment of the mixed powder, the composite powder with small particle size is collected through screening; and the composite powder is formed by additive manufacturing, so that the modification of the 5-series aluminum alloy is completed, and the aluminum alloy composite material is obtained. The technical scheme of the application is used for providing a titanium carbide and element powder modification method for 5-series aluminum alloy and an aluminum alloy composite material.

The application relates to the technical field of spinning fibers, and discloses a graphene chinlon spinning fiber and a preparation process thereof; modified graphene A and modified graphene B are prepared; the raw materials of the modified graphene A include carboxyl activated graphene and tetramer lysine; the modified graphene A is used for preparing an impregnation solution together with glutaraldehyde, ethanol, propanol and sodium carbonate, and is used for surface modification of modified chinlon fibers prepared in a subsequent step; the raw materials of the modified graphene B include carboxyl activated graphene and a polyamide polyether block copolymer; the modified graphene B is used for preparing modified nylon 6 together with caprolactam and 6-aminohexanoic acid, and then the modified nylon 6 is subjected to melt spinning and post-drawing to obtain modified chinlon fibers; the modified chinlon fibers are put into the impregnation solution, impregnated at 50-60 DEG C for 0.5-1 h, the bath ratio is 1:50-1:60, and the graphene chinlon spinning fiber is obtained by taking out and drying; the graphene chinlon spinning fiber has good antibacterial property, hydrophilicity, good strength and excellent performance.

This invention discloses a cathode material and its preparation method, a cathode electrode sheet, and an all-solid-state lithium battery, belonging to the field of all-solid-state lithium battery technology. The cathode material includes a core and a composite coating layer covering the surface of the core. The core includes a ternary cathode material. The composite coating layer includes an inner coating layer, a middle coating layer, and an outer coating layer arranged sequentially from the inside out. The inner coating layer is a solid electrolyte, the middle coating layer is at least one of lithium niobate, lithium zirconate, and lithium tantalate, and the outer coating layer is lithium phosphate. Both the middle and outer coating layers are continuous films. Along the diameter direction of the core, the elastic modulus of the inner coating layer is greater than that of the middle coating layer, and the elastic modulus of the middle coating layer is greater than that of the outer coating layer.

The application provides a non-fluoropolymer, a non-fluoropolymer composite diaphragm and application, the non-fluoropolymer includes polymer A and the polymer B at least partially coated on the surface of polymer A, the crosslinking degree of polymer A is X1, the crosslinking degree of polymer B is X2, 5%≤X1≤10%, 50%≤X2≤60%;The non-fluoropolymer composite diaphragm includes base film and coating layer coated on at least one side of base film.The non-fluoropolymer particles of the application have a higher swelling rate at high temperature, also have the reversible characteristics of absorbing and releasing electrolyte, the non-fluoropolymer and the non-fluoropolymer composite diaphragm are applied in the battery, when the battery abnormally heats, the non-fluoropolymer swells rapidly, blocks the ion shuttle channel, avoids the further deterioration of temperature, improves the safety performance of the battery, and when the temperature returns to normal, the non-fluoropolymer particles can restore to the original morphology, restore the ion shuttle channel, so as to not affect the subsequent cycle performance of the battery.

The application belongs to the technical field of alkali-free glass fiber, and particularly relates to a modified low-boron and low-fluorine alkali-free glass fiber composition and a preparation method thereof. The modified low-boron and low-fluorine alkali-free glass fiber composition comprises the following components: SiO2, Al2O3, B2O3, CaO, MgO, Fe2O3, TiO2, F2, R2O, X2O3, Li2O and ZnO, wherein R2O is a mixture of K2O and Na2O, and X2O3 is a mixture of La2O3 and Y2O3. The application provides the modified low-boron and low-fluorine alkali-free glass fiber composition and the preparation method thereof. Through the introduction of rare earth elements and the synergistic effect of Li2O and B2O3 components, the problems of high viscosity, high crystallization risk and narrow temperature window of the existing low-boron and low-fluorine glass fiber are effectively solved while the content of boron and fluorine is greatly reduced, and the elastic modulus, breaking strength and water resistance of the glass fiber are significantly improved.

The application discloses a kind of high-strength waterproof board and preparation method thereof, it is related to plate technical field.The preparation method of the application includes the following steps: sequentially stack 1 steel plate, 2 base plates, 1 fingerprint-resistant polymer film on 1 fingerprint-resistant polymer film, then heat pressing solidification, after cooling, plate is taken out, and high-strength waterproof board is obtained;Wherein, base plate is prepared from modified kraft paper and modified color paper.The water resistance, fire resistance and bonding strength of the plate are effectively improved by modifying kraft paper with modified phenolic resin, hydrophilic silicon dioxide and other components;The bonding strength, water resistance and fire resistance of the plate are further improved by modifying color paper with melamine, vanillin, flame retardant DOPO, 3,4-dihydroxybenzaldehyde and other components.Therefore, the application has a more extensive application prospect.

Provided are: a powder composition comprising a polyamide powder (A) and an inorganic reinforcing material (B), in which the polyamide powder (A) has a D50 particle diameter of 1 µm or more and 100 µm or less and a sphericity of 80 or more and 100 or less, the inorganic reinforcing material (B) has an average major axis diameter of 3 µm or more and 300 µm or less and an (average major axis diameter) / (average minor axis diameter) ratio of 1 or more and 15 or less, and the inorganic reinforcing material (B) is contained at an amount of 5% by weight or more and 60% by weight or less relative to the total weight of the powder composition; a method for producing a three-dimensional model object by a powder bed fusion method using the powder composition; and a three-dimensional model object. The powder composition comprises a specific polyamide powder and a specific inorganic reinforcing material, and therefore has a high flowability and can maintain the flowability at a satisfactory level even when used for recycling. When the powder composition is applied to three-dimensional modeling, a model object having both of a surface smoothness and a high elastic modulus can be obtained.

An electron beam curing method, materials, and equipment for complex ceramic components are disclosed. This method employs a focused electron beam with a variable beam diameter to selectively cure and form ceramic materials containing photosensitive resin, layer by layer, to create complex components. These components are then sintered to obtain the final complex ceramic component. Due to the high penetration of the electron beam and the real-time control of the beam diameter, this method can not only form complex, irregularly shaped, high-density components such as ultrafine carbides, nitrides, and ultra-high temperature ceramics, but also reduce the difficulty of sintering. Simultaneously, the real-time adjustment of the beam diameter allows for efficient filling of large areas within complex components and precise shaping of fine contours. Furthermore, the high vacuum requirement during electron beam curing significantly reduces defects such as pores within the material. Since electron beam curing can reduce or eliminate the need for initiators, the storage stability of the prepared ceramic materials is also greatly improved. This represents a novel additive manufacturing process for high-performance complex ceramic components.

The preparation process comprises the following steps: S1, adding amino-terminated hyperbranched polyamide-amine (the branching degree is 0.5-0.68, the hydrodynamic radius is less than 3 nm, and the number of amino-terminated groups is 3-8) and a catalyst into a polyamide acid solution, stirring and reacting under the protection of an inert atmosphere, filtering, washing, and drying to obtain the colorless transparent high-performance polyimide film. A pre-crosslinked polyamide acid solution is obtained; and S2, uniformly coating the pre-crosslinked polyamide acid solution on a substrate, carrying out thermal imidization reaction under the protection of inert atmosphere, and stripping the film from the substrate to obtain the colorless transparent high-performance polyimide film. The method is simple in process, mild in condition, good in compatibility with an existing production line, free of complex pretreatment, suitable for large-scale continuous production and remarkable in comprehensive cost advantage, provides an effective way for solving the problem that optical performance, heat resistance and mechanical performance of an existing polyimide film are difficult to consider into account, and has a wide application prospect in the field of flexible photoelectricity.

The application discloses a refrigeration equipment and a household appliance. The refrigeration equipment comprises an outer shell body, an inner shell body arranged on the outer shell body, a heat preservation layer formed between the inner shell body and the outer shell body, and a thermal expansion adjusting member arranged on the inner shell body and configured to inhibit thermal expansion deformation of the inner shell body. The thermal expansion coefficient of the thermal expansion adjusting member is not greater than 0.5 times the thermal expansion coefficient of the inner shell body, the elastic modulus of the thermal expansion adjusting member is not less than 10 times the elastic modulus of the inner shell body, and the elastic modulus of the thermal expansion adjusting member is not greater than 100 times the elastic modulus of the inner shell body. The thermal expansion deformation is inhibited to reduce the thermal deformation amount of the refrigeration equipment, improve the use reliability and reduce the manufacturing cost.

Provided is a glass composition having a high elastic modulus and good productivity at low cost. A composition for glass fibers, which is characterized by containing, in mass%, 40 to 60% of SiO2, 10 to 30% of Al2O3, 0 to 10% of B2O3, 5 to 20% of MgO, 5 to 20% of CaO, 0 to 10% of SrO, and 0 to 10% of BaO.

A glass fiber composition with high elastic modulus and good productivity is provided. The glass fiber composition is characterized by containing 10 ppm or more of Cr2O3 by mass, and having an Al2O3 / Cr2O3 ratio greater than 150 by mass.

A polyimide resin having a structural unit A derived from tetracarboxylic dianhydride and a structural unit B derived from a diamine, wherein structural unit A comprises a structural unit (A1) derived from a compound represented by formula (a1), and structural unit (A1) comprises more than 35 mol% of a trans-type structure derived from (1R,2S,4S,5R)-cyclohexanetetracarboxylic dianhydride; structural unit B comprises a structural unit (B1) derived from a compound represented by formula (b1); and the polyimide resin does not contain structural element (c). (In formula (c), X is a fluorine atom, a hydrogen atom, or a carbon atom.)

The utility model discloses a kind of compressor and vehicle for vehicle, compressor includes: shell and cylinder assembly, cylinder assembly is located at shell and includes cylinder, cylinder has cylinder cavity, sliding vane groove and inlet passage, eccentric rotating piston is provided in cylinder cavity, reciprocating sliding vane is provided in sliding vane groove, one end of sliding vane is stopped on the outer circumferential wall of piston, inlet passage is communicated with cylinder cavity, wherein, cylinder cavity, inlet passage and sliding vane groove all extend along axial direction, and cylinder is stamping forming piece. According to the utility model embodiment's compressor for vehicle, by cylinder cavity, inlet passage and sliding vane groove extend along axial direction, and cylinder is stamping forming piece, the processing period of cylinder can be greatly shortened, part cost reduces, and the material selection of cylinder is more flexible, to select the material of higher elastic modulus, to improve the rigidity of cylinder, improve the product reliability of compressor.

The invention provides an in-situ synthesis high-strength heat-resistant magnesium-based composite material and a preparation method thereof.The in-situ synthesis high-strength heat-resistant magnesium-based composite material comprises a magnesium alloy matrix and an Al3Ti and Al2Gd particle strengthening phase, and the in-situ synthesis high-strength heat-resistant magnesium-based composite material comprises, by mass, 8%-20% of Gd, 4%-18% of Al, 0.8%-4% of Ti and the balance Mg and inevitable impurities. The specific preparation method of the material comprises the following steps: melting pure Mg in a crucible resistance furnace with atmosphere protection, sequentially adding pure Gd and pure Al, fully melting, mechanically stirring, adding sponge Ti, applying electromagnetic stirring, pouring to obtain a composite material master ingot, and homogenizing and aging to obtain the in-situ synthesis magnesium-based composite material. According to the composite material, Al, Ti and Gd are used for generating high-melting-point Al3Ti and Al2Gd phases, and the high-temperature performance and the elastic modulus of the material are improved; ti is used as a grain refining element, so that the material cost is reduced.

The invention discloses modified asphalt and a preparation method thereof. The modified asphalt comprises the following components in parts by weight: 100 parts of matrix asphalt; 0.5 to 4 parts of a solubilizer; 4-6 parts of a polymer modifier; 4-8 parts of a high-viscosity modifier; 0.5 to 1 part of modified composite fiber; and 0.2 to 0.4 part of a stabilizing agent. The modified asphalt has the characteristics of high viscosity and high elasticity, and the low-temperature performance and the storage stability of the asphalt can be improved.