58results about How to "Adequate mechanical properties" patented technology

The invention discloses a battery diaphragm based on aramid fibre. The battery diaphragm is manufactured mainly from ultra-short aramid fibre in match with aramid fibre fibrid, and the specific requirements of air permeability and porosity of the battery diaphragm can be satisfied through adjusting fibre formula and molding process. The battery diaphragm can realize mechanical isolation function of the positive and negative poles of the battery, ensures low resistance and high ion electrical conductivity simultaneously, and has enough electrochemistry stability. Compared with traditional plastic diaphragm, the battery diaphragm in the invention has more excellent comprehensive properties, i.e. excellent heat resistance performance, high strength, fatigue resistance performance, low deformation, fire-resistant and flame retardant performance, chemical-corrosion resistance performance and the like. The battery diaphragm in the invention can be widely applied to the manufacturing of various ion batteries.

The invention relates to a functional integrated absorbable guided tissue regeneration membrane and a preparation method thereof. The regenerated membrane comprises a degradable artificially synthesized high-molecular material, a natural degradable high-molecular polymer and inorganic nanoparticles. The method comprises the following steps: dissolving the degradable artificially synthesized high-molecular material and the natural degradable high-molecular polymer in an organic solvent, stirring, adding inorganic nanoparticles, stirring, carrying out ultrasonic treatment, and carrying out electrostatic spinning. The regeneration membrane has good mechanical properties, biocompatibility, antibacterial property and osteogenic activity, and also has an obvious periodontal repair effect. The method has the advantages of wide material sources and low preparation cost, and has potential clinical application prospects.

The invention discloses a ceramic tile made from desulfurized residues and glaze residues. The ceramic tile comprises, by weight, 1-5% of mixed waste residues and 95-99% of base materials; the mixed waste residues comprise, by weight, 75-90% of the waste glaze residues and 10-25% of the desulfurized residues; the waste glaze residues are produced in the production process of ceramic tiles, and thedesulfurized residues are produced through flue gas desulfurization by lime water. The invention also discloses a production method of the ceramic tile. The ceramic tile and the production method thereof have the advantages that the waste glaze residues and the waste residues generated by flue gas desulfurization are introduced to a basic formula, so that the desulfurized residues and the waste glaze residues are recycled, and each performance of the product reaches the standard; the desulfurized residues and the waste glaze residues are recycled, so that waste discharged from production of the desulfurized residues and the waste glaze residues is avoided, the production cost of the ceramic tile can be reduced, and the quality of finished ceramic tile products is not affected.

The invention discloses a plastic wheel cylinder of a rear drum brake of an automobile. A steel pipe is inlaid between a plastic inner pipe and a plastic outer shell and is inject-molded into a whole. Two end faces of the steel pipe are respectively provided with convex plates which are extruded outward and evenly distributed to guarantee that the steel pipe is inlaid into the plastic. The plastic outer shell is provided with a convex plate surface, a plurality of rectangular grooves which are perpendicular to the axes of plastic outer pipes and have identical number with the axis of the plastic outer pipes are formed in an oil pipe seat along two sides of the plastic outer shell, and the oil pipe seat is inlaid in the convex plate surface of the plastic outer shell through the rectangular grooves. Air deflating screw holes and oil inlet holes communicated with the plastic inner pipe are formed in the oil pipe seat. The plastic wheel cylinder of the rear drum brake of the automobile is inject-molded at one time, and is simple in molding and processing technic, and short in producing cycle. Due to the fact that the inner wall of the plastic wheel cylinder of the rear drum brake of the automobile is made of plastic, the plastic wheel cylinder of the rear drum brake of the automobile needs no machining, is strong in corrosion resistance, and is not prone to being corroded by brake fluid. The inlaid steel pipe sleeve guarantees sufficient mechanical property, and the plastic wheel cylinder of the rear drum brake of the automobile is not prone to being stressed to deform. In addition, the plastic replaces metal materials, the total weight of the wheel cylinder is small, and customer satisfaction degree is beneficial to improve.

The invention provides a fish nest type organic fiber macroporous concrete retaining wall and a construction method thereof. The retaining wall comprises an organic fiber macroporous concrete layer; the organic fiber macroporous concrete layer is formed by pouring organic fiber macroporous concrete; a plurality of fish nest holes are formed in the side face of the organic fiber macroporous concrete layer; and fish nest functional concrete is poured into the fish nest holes; the pore size of the organic fiber macroporous concrete is 5-20mm; the porosity of the organic fiber macroporous concreteis not less than 30%; the pore size of the fish nest functional concrete is 40-80mm; and the porosity of the fish nest functional concrete is not less than 40%. According to the retaining wall, the communicating holes in the organic fiber macroporous concrete are used for remarkably slowing down the water flow speed, and a place for spawning, reproduction and habitat is provided for fishes and other aquatic organisms.

The invention relates to a bionic trachea constructed by three-dimensional printing composite aerogel and a preparation method thereof. The preparation method comprises the following steps: pouring and molding a crushed fiber mixed solution and a hollow round tube bracket in a mold, crosslinking, carrying out heat treatment, and soaking to obtain the bionic trachea. The polylactic acid / gelatin aerogel provided by the invention has a nanofiber structure, and is a porous and extrudable sponge structure material with excellent water absorption. The material obtained by the method can promote the formation of cartilage cell matrix, and provides effective support for long-term stability of bionic tracheal structure functions.

The invention provides a soft tissue repair patch material, a soft tissue repair patch and a manufacturing method and application of the soft tissue repair patch, and relates to the technical field of biological tissue repair. The soft tissue repair patch material comprises sodium alginate / graphene hydrogel and fibrous protein / graphene hydrogel, wherein the sodium alginate / graphene hydrogel has certain mechanical strength and is low in degradation rate, and the defects that the mechanical property of the fibrous protein / graphene hydrogel is insufficient and the degradation rate is too high can be overcome; therefore, enough mechanical support and tissue repair time are provided for a prepared soft tissue repair patch, the fibrous protein / graphene hydrogel is beneficial to mass amplification and propagation of cells, soft tissue repair is promoted, and through cooperative use of the two hydrogel systems, the soft tissue repair patch prepared from the soft tissue repair patch material is endowed with mechanical properties suitable for clinical use, a degradation rate matched with tissue repair and good cell compatibility, and has a wide clinical application prospect.

The invention discloses an alkali-proof and temperature-resistant PVA (Polyvinyl Alcohol) fiber. The hydroformylation degree eta of the PVA fiber is 25 percent to 35 percent; the shrinkage rate S% and the water temperature T of the fiber of the PVA fiber in water at 120 DEG C to 180 DEG C meet the following formula (I): S is less than 0.16T-18.8 (I), wherein T is more than 120 DEG C but less than 180 DEG C. The PVA fiber provided by the invention has relatively high temperature resistance, keeps stiff and smooth and cannot be decomposed in the water at 120 DEG C to 180 DEG C; the fiber is guaranteed to have enough mechanical performance at high temperature; the tensile strength is 6cN / dtex to 13cN / detx; the shrinkage rate S of the fiber at 120 DEG C only reaches 0.1 percent; the shrinkage rate S of the fiber at 180 DEG C only reaches 9.0 percent; the alkali-proofing performance is excellent; when being kept in alkali liquor in which pH (potential of Hydrogen) is equal to 10 for 12 hours, the fiber has the mass loss rate which is less than 0.5 percent; meanwhile, the alkali-proof and temperature-resistant PVA fiber is good in dispersity and high in mechanical strength; the PVA fiber provided by the invention has the fiber density of 1.0dtex to 1.8dtex and the break elongation of 10 percent to 20 percent at normal temperature.