29results about How to "High breaking strength" patented technology

The present application belongs to the technical field of high-performance nylon fiber materials, and particularly relates to a preparation method of antibacterial modified high-performance nylon fiber. The preparation method comprises the following steps: S1, a triazine ring-containing dicarboxylic acid is prepared by taking cyanuric chloride, 4-amino-2,2,6,6-tetramethylpiperidine and p-hydroxybenzoic acid as raw materials, triphenylphosphine oxide is subjected to nitration treatment and reduction treatment to obtain tris(3-aminophenyl)phosphine oxide, and the triazine ring-containing dicarboxylic acid and the tris(3-aminophenyl)phosphine oxide are mixed for a synthesis reaction to obtain modified hyperbranched polyamide; S2, polyamide masterbatch, modified hyperbranched polyamide, antibacterial material, zinc stearate and antioxidant are melt blended, extruded and granulated to obtain modified nylon chip; and S3, the modified nylon chip is subjected to melt spinning to obtain antibacterial modified high-performance nylon fiber. The present application not only ensures that the fiber has good antibacterial performance, but also effectively improves the breaking strength and flame retardant performance.

The invention provides a double-layer jacquard fabric interlayer weaving process and a double-vision artistic effect realization method, and the method comprises the following steps: providing warp yarns, weft yarns and interlayer connecting yarns which are adaptive to double-layer jacquard, and the breaking strength of the interlayer connecting yarns is not less than 3.2 cN / dtex; the method comprises the following steps: importing surface layer jacquard pattern data and inner layer jacquard pattern data into a pattern weaving CAD system, presetting a yarn interweaving threshold value and pattern edge transition parameters of an interlayer connection area, generating a collaborative weaving data table of surface and inner layer jacquard and interlayer connection, marking corresponding interweaving areas of surface layer patterns and inner layer patterns, and carrying out collaborative weaving; the collaborative weaving data table comprises intervention opportunities and interweaving frequency parameters of connecting yarns in each region; according to the invention, by switching the connecting structure in different periods, adapting to the characteristics of the jacquard area and combining the parameters of the connecting yarn and the limitation of the interweaving depth, the complete concealment of the connecting points, the accurate alignment of mirror image jacquard of the surface and inner layers, the control of the dislocation amount within 0.15 mm and the complete and non-split double-visual effect are realized, and the visual requirements of high-end fabrics are met.

The application discloses a kind of low basis weight high-density fiber material preparation methods, the fiber material includes fiber layer and hot melt powder layer;The fiber layer is filled with superfine powder;Including the following steps: (1) polyvinyl alcohol ultra-short fiber, polyester superfine ultra-short fiber, fine denier ultra-short cellulose fiber are made into mixed slurry, then wet-laid web is made;(2) the wet-laid web is consolidated into intermediate material, then the intermediate material hot water bath is made, and polyvinyl alcohol ultra-short fiber is dissolved;(3) superfine powder is made into suspension, and filled into intermediate material;(4) hot melt powder is made into suspension slurry and coated and fixed.Reduce the unit area mass of material, increase the density of material under low basis weight, utilize the thermal closing pore effect of superfine powder, ensure the safety of battery separator product.Realize the technical requirement of low basis weight, high density and high porosity, solve the problem that existing fiber material cannot meet the use requirement of battery separator.

The invention relates to a high-strength antibacterial spandex fabric and a preparation method thereof, and belongs to the technical field of functional textile materials. The spandex fiber comprises a spandex fiber matrix and a functional polymer layer grafted on the surface of the matrix through a covalent bond, and the functional polymer layer is a polymer of an unsaturated derivative of natural phenolic acid and is prepared by introducing carbon-carbon unsaturated bond groups such as acryloyloxy and the like into the natural phenolic acid through esterification or etherification. During preparation, the spandex fiber is subjected to plasma pretreatment, and then the spandex fiber and the natural phenolic acid-containing unsaturated derivative monomer are subjected to thermal initiation or photo-initiation graft polymerization to form the functional layer. The lasting and stable antibacterial function is achieved through covalent bond grafting, the natural phenolic acid derivative endows the fiber with the environment-friendly and non-dissolution type antibacterial property, the functional layer can improve the modulus and breaking strength of the fiber, the intrinsic elasticity of spandex is considered, the comfortable fitting characteristic of the composite fabric is reserved, and the composite fabric is endowed with the high strength and the antibacterial function.

The invention relates to the technical field of regenerated fiber manufacturing, in particular to a method for preparing filament fibers from waste PET (polyethylene terephthalate) materials, which comprises the following steps: raw material pretreatment, ultrasonic-assisted depolymerization, continuous polymerization and functional modification, melt direct spinning, grinding of waste yarns in a chemical fiber factory, crushing of waste PET bottles, grinding after cleaning, and obtaining of PET powder; the method comprises the following steps: mixing PET powder with ethylene glycol according to a molar ratio, generating BHET under the action of ultrasonic waves, sequentially carrying out esterification, pre-polycondensation and final polycondensation on the BHET to obtain a regenerated PET melt, adding a modified additive in the esterification reaction, spinning the regenerated PET melt by adopting a one-step process, cooling by cooling air, and winding to obtain the filament fiber. The problems that traditional regenerated PET fibers are single in raw material, complex in process and insufficient in performance are solved, low-cost and high-efficiency preparation of semi-dull, flame-retardant, cationic dyeable and other multifunctional products is achieved, and high-value utilization of waste PET is improved.

The application relates to the technical field of fibers, and discloses a long-acting antibacterial fiber and a preparation process thereof. 1,3,5-tri(methyl acetate trimethyl ammonium bromide) benzene and ethylenediamine are subjected to amidation condensation reaction to obtain a quaternary ammonium salt antibacterial agent, then electrostatic spinning is carried out with polyurethane resin to obtain the long-acting antibacterial fiber. The antibacterial agent contains a large number of positive charges, can destroy the negatively charged cell membranes of bacteria, inhibit the growth of bacteria, has a good killing effect, and significantly improves the long-acting antibacterial performance of the fiber. The quaternary ammonium salt antibacterial agent contains a large number of amide bonds, forms hydrogen bond force with urethane groups of the polyurethane, has good compatibility, has little influence on the mechanical properties of the fiber, the polyurethane fiber maintains good breaking strength and breaking elongation, and can have good mechanical properties and antibacterial performance.

The application relates to the technical field of fibers, and discloses a modified recycling polyamide fiber and a preparation method.The nylon recycling material and quaternary ammonium salt sodium alginate are mixed, melt blending extrusion is carried out in a screw extruder, granulation is carried out, melt spinning is carried out in a spinning machine, the fiber is drawn by a drawing machine, and the modified recycling polyamide fiber is collected and prepared.The quaternary ammonium salt sodium alginate has a large number of hydrophilic carboxylate, amide bonds and quaternary ammonium salt groups, can improve the hygroscopicity and moisture regain of the nylon polyamide fiber, the quaternary ammonium salt groups have strong sterilization effect, excellent antibacterial properties are endowed to the fiber, the quaternary ammonium salt sodium alginate contains amide bonds, the compatibility with the nylon polyamide molecular chain is good, the combination of the two is strong, and the composite fiber has good breaking strength and mechanical properties.

The application discloses weather-resistant polyester and a preparation method thereof, and relates to the technical field of polyester fibers. The weather-resistant polyester is prepared from the following components in parts by mass: 90-110 parts of polyethylene terephthalate resin, 1-2 parts of a weather-resistant agent, 2-5 parts of a dispersing agent, 1.5-3 parts of a lubricant, and 5-15 parts of a nano functional filler. The weather-resistant agent is added to efficiently absorb ultraviolet light, block photoaging chain reactions, reduce performance degradation of the polyester in adverse environments such as ultraviolet light and heat and moisture, and effectively delay the aging process.

The invention discloses a high-entropy rare earth calcium oxygen borate nonlinear optical crystal as well as a preparation method and application thereof, and belongs to the technical field of nonlinear optical crystal materials. The chemical general formula of the high-entropy rare earth calcium oxygen borate crystal is shown in the specification, n is larger than or equal to 5, R is rare earth elements of different types, and the molar fraction of each rare earth element meets the condition that x + y +... + t = 1. According to the high-entropy rare earth calcium oxygen borate crystal, the cleavage characteristic of RCOB series crystals can be improved, and the risk of cleavage cracking of the crystals in the growth and processing process can be effectively reduced; meanwhile, the nonlinear optical performance of the high-entropy crystal can be further optimized, and the application of the high-entropy crystal in the technical field of nonlinear optics is expanded.

This invention discloses a toughened alumina ceramic and its preparation method, comprising the following components by weight: 2-6 parts clay, 20-30 parts nano-aluminum powder, 70-90 parts alumina powder, 8-12 parts concentrated sulfuric acid, 8-12 parts microcrystalline cellulose, 3-4 parts sintering aid, 3-4 parts quartz, 3-4 parts calcite, 12-16 parts graphene, and 5-7 parts binder. This invention relates to the field of alumina ceramic technology. A pressing molding method is used to uniformly add nanofibers to the ceramic material. The nanofibers, acting as a toughening phase in the matrix, significantly enhance the fracture toughness and relative strength of the composite material. During fracture, the fiber-reinforced ceramic exhibits increased surface energy through fiber pull-out, bridging, debonding, and fracture, as well as crack micronization, bending, and deflection, thereby improving toughness.

The present invention relates to a copper alloy tube for a heat exchanger having excellent breaking strength and a method of manufacturing the same, and more particularly, to a Cu alloy tube having excellent breaking strength and thermal conductivity and suitable for use in a heat exchanger, and a method of manufacturing the same.

The application relates to the technical field of heat-conducting composite materials, and discloses a heat-conducting flexible composite phase change material as well as a preparation method and application thereof. The method comprises the following steps: modifying a thermoplastic elastomer by grafting maleic anhydride as a grafting agent; modifying a heat-conducting filler by surface hydroxylation with a strong base as a surface modifier; melt blending the grafted thermoplastic elastomer with a phase change material, and adding the surface-modified heat-conducting filler to crosslink, so as to obtain the heat-conducting flexible composite phase change material. By regulating and controlling the micro-interface structure of the filler-matrix, the interface interaction between the filler and the matrix is enhanced, the heat-conducting-support integrated structure is constructed, the interaction between the filler and the matrix is improved, the dispersion of the filler in the matrix is improved, the interface phonon scattering is reduced, the heat-conducting flexible composite phase change material has good heat-conducting performance, and meanwhile, the heat-conducting flexible composite phase change material also has strong mechanical performance and high energy storage density.

This utility model discloses a two-stage tension control device for yarn in a plying machine, belonging to the field of yarn plying technology. The device includes a yarn feeding frame equipped with a servo tensioner; a tension guide wheel located on one side of the feeding frame, equipped with a tension controller and a tension wheel connected to the controller; a yarn separating disc and a plying machine, sequentially arranged on one side of the tension guide wheel. The servo tensioner controls the feeding tension of each yarn and maintains consistent tension values ​​across all yarns, achieving the first stage of tension control. The tension controller further controls the yarn tension and detects the tension value, achieving the second stage of tension control. The ply yarn obtained through this two-stage tension control exhibits better appearance and superior performance indicators, as well as higher breaking strength and a longer service life.

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 modified non-woven fabric and a preparation method thereof. The method is characterized in that graphene oxide and graphene are prepared into a mixed multi-layer graphene spraying liquid through ultrasonic intercalation, and then the mixed multi-layer graphene spraying liquid is adhered to a non-woven fabric through a spraying process to modify the non-woven fabric. The modified non-woven fabric is not easy to fall off, is stable in structure, can effectively avoid tearing of fibers of the non-woven fabric in a stretching process, and improves the overall breaking strength of the non-woven fabric.

The utility model provides a kind of ultra-thin shielded motor, including stator assembly, rotor assembly and two supports;Rotor assembly is rotatably arranged in the inside of stator assembly, two supports are symmetrically fixed in the front and back of stator assembly, the both ends of rotating shaft in rotor assembly are rotatably connected with the support of corresponding side through a bearing assembly;The both ends of rotor body axial direction in rotor assembly are provided with recessed cavity, the inside of each support middle part is provided with annular protruding portion, the inside of protruding portion forms annular mounting cavity, each bearing assembly is pressed into mounting cavity in the inside of corresponding support, each protruding portion is inserted in the recessed cavity of corresponding side and cooperates with recessed cavity clearance;The utility model can reduce the thickness of shielded motor, i. e. when shielded motor is applied to the inside of target product, the occupied space of shielded motor can be reduced.

The application discloses a sphingan and application of the sphingan in bio-degumming of ramie. Sphingobium The sphingan is sp. R1, which is preserved in the China General Microbiological Culture Collection Center on November 3, 2025, and the preservation number is CGMCC NO. 36470. The strain can secrete enzymes such as pectinase and xylanase to hydrolyze ramie gum, enzymatic degumming or microbial degumming is carried out by using the strain, ramie gum can be efficiently removed, and a new scheme is provided for green and efficient processing of ramie.

The application relates to the technical field of fibers, and discloses an antibacterial fiber and a preparation process.The antibacterial fiber of the application comprises polylactic acid and modified titanium dioxide in a mass ratio of 100: (1-5); the modified titanium dioxide and the polylactic acid are added into a spinning solvent, spinning is carried out through an electrostatic spinning machine, and the antibacterial fiber is obtained.The carboxyl group of the succinate-based lactic acid ester and the hydroxyl group on the surface of nano-titanium dioxide form interaction, the organic modified titanium dioxide is not prone to agglomeration, more antibacterial sites can be exposed, the antibacterial rate of the fiber is improved, meanwhile, the succinate-based lactic acid ester contains an ester group and a lactic acid ester structure similar to those of the polylactic acid, the compatibility of the nano-titanium dioxide and the polylactic acid is improved, the nano-titanium dioxide is uniformly dispersed in the fiber matrix, the breaking strength and the breaking elongation of the polylactic acid fiber are improved, and the mechanical property is better.

This application relates to the field of bio-based copolyester technology, and discloses a bio-based copolyester, its preparation method, and its applications. The preparation method of the bio-based copolyester includes: prepolymerizing an aliphatic lactone under an inert atmosphere and at a temperature of 160–180°C in the presence of a catalyst to obtain a prepolymer; adding a cyclic butylene terephthalate oligomer to the prepolymer, and then prepolymerizing at 180–200°C; and finally, after vacuuming, heating to 220–250°C for further polymerization to obtain the bio-based copolyester. In this application, the aliphatic lactone is first prepolymerized at a lower temperature through ring-opening; the prepolymer and the cyclic butylene terephthalate oligomer are then mixed uniformly in a liquid state for prepolymerization, followed by final polymerization at a higher temperature; the prepolymerization, prepolymerization, and final polymerization are carried out stepwise at different temperatures to obtain a bio-based copolyester with controllable structure and high molecular weight. The copolyester of this application has a number-average molecular weight of 18,000 to 25,000, and the mechanical properties of the melt-spun fibers are ≥3.00 cN / dtex breaking strength and 20.0 to 50.0% breaking elongation.

The invention discloses a preparation method of a light-weight low-tensile high-modulus polyester industrial yarn, which comprises the following steps of: tackifying a high-viscosity polyester chip by a solid-phase tackifying device, melting and extruding by a screw extruder, entering a spinning manifold, distributing the melt in the spinning manifold by a spinning component, and pressing into a porous spinneret plate to form a tow, sequentially cooling, oiling, drafting, heat setting and winding to obtain the low-stretch high-modulus polyester industrial yarn. The intrinsic viscosity of the high-viscosity polyester chip is 1.10-1.16 dL / g, the melting point is 257-265 DEG C, the specification of the chip is 2.35 + / -0.50 g / 100, the number of holes of a spinneret plate is 280f, the hole pitch of the spinneret plate is 0.96 cm, and the hole diameter is 0.8-0.99 mm. The industrial yarn produced by the method shows excellent characteristics of light weight, low stretching and high modulus, and completely meets the requirements of high-end rubber framework materials such as radial tires and the like on high-performance fibers.

The application discloses high-elasticity polyoxamide as well as a preparation method and application thereof, wherein the high-elasticity polyoxamide adopts polyether chains to provide a'soft segment', oxamide structures and six-membered rigid rings to provide a 'hard segment', forms a linear structure with soft and hard phase embedding, and gives the polyoxamide high elasticity; specifically, the high-elasticity polyoxamide contains polyether chain structure units and oxamide structure units shown in formula (I) in a molecular structure: wherein R' is a group containing a six-membered rigid ring. The fiber prepared by using the high-elasticity polyoxamide has high elongation at break, high breaking strength, high 200% stress and excellent elastic recovery rate.

The application provides a normal-temperature and normal-pressure dyeable PVC fiber and a preparation method thereof, and comprises a PVC fiber, wherein the PVC fiber contains a modified silkworm protein powder / MOF composite material, the modified silkworm protein powder / MOF composite material is a modified silkworm silk protein powder wrapped by a MOF material, the compatibility and heat resistance of the modified silkworm protein are strengthened through enzymatic modification and MOF encapsulation, and the on-line addition melt spinning process is combined, so that the problems of difficult dyeing, poor modification effect, insufficient environmental protection and economy of the existing PVC fiber are solved.

The utility model relates to a 3D printing crosslinking interlocking shoe sole, including shoe insole, support board and shoe sole, the support board sets up in the inside of shoe insole, between the support board with the shoe insole through 3D printing interlocking crosslinking together, and the first interlocking structure is formed between the two, the shoe insole with the shoe sole through 3D printing interlocking crosslinking together, and the second interlocking structure is formed between the two, first, second interlocking structure is the sawtooth interlocking structure of interlayer fitting, the mortise and tenon interlocking structure of interlayer fitting or the spiral interlocking structure of interlayer interlocking. The utility model relates to a 3D printing crosslinking interlocking shoe sole, has the following beneficial effect: the interlocking crosslinking structure between the parts of shoe sole, the improvement of the bonding strength, the good fracture strength of the bonding place through the tensile test test. The production efficiency is improved, and the mould is not needed.

The utility model discloses a flexible control cable, which relates to the technical field of cables, aims to solve the problem of poor bending resistance of the cable in the prior art, and adopts the technical scheme that the flexible control cable comprises a stranded conductor, a reinforcing piece and a filling strip, an insulating layer is extruded outside the stranded conductor to form an insulating wire core, and the reinforcing piece is extruded outside the insulating wire core to form an insulating layer. A braided reinforcing layer is braided outside the insulated wire cores; the high-strength aramid yarn is added in the stranded conductor, and the aramid has the characteristics of high tensile strength, high tensile force, low extension, high modulus, high breaking strength, high temperature resistance, flame retardance and the like; a plurality of groups of insulating wire cores which are externally braided with the braided reinforcing layers are twisted to form a cable core, gaps of the cable core are filled with filling strips, and the center of the cable core is filled with a reinforcing piece; an inner sheath is extruded outside the cable core, a metal reinforcing layer is woven outside the inner sheath, and an outer sheath is extruded outside the metal reinforcing layer.

The application discloses a waterproof and breathable film material preparation method, a waterproof and breathable film and a waterproof and breathable fabric. The preparation method comprises the following steps: S1, preparing a graphene dispersion liquid; S2, respectively taking polylactic acid and cellulose as a base material, adding the graphene dispersion liquid and a bio-based functional additive, and respectively preparing a spinning liquid; S3, in the process of electrospinning, a magnetic field with a strength of 0.5-1.0 T and a direction perpendicular to the spraying direction is applied, a porous nanofiber support layer is first formed, and then a dense nanofiber functional layer is formed, so that a double-layer structure composite fiber film is obtained; and S4, after cross-linking treatment and heat setting, the waterproof and breathable film is obtained. Through the double-layer structure design and the magnetic field, the graphene is induced to arrange in a direction, the obtained film material has a water contact angle of greater than or equal to 142 degrees, a rolling angle of less than or equal to 11 degrees, a moisture permeation of greater than or equal to 6700 g / (m 2 ·24h), a breaking strength of greater than or equal to 6.5 MPa, and an elongation at break of greater than or equal to 46%, and the raw material is degradable, and is suitable for outdoor clothes such as a jacket.

This invention relates to an eight-way elastic shaping underwear fabric and its weaving method. The fabric body is woven from 20-40D nylon and 140-210D and 40-70D elastic yarns. The nylon accounts for 60% of the mass of the fabric body, and the elastic yarns account for 40%. The fabric uses an alternating open and closed loop pattern, with each warp yarn alternately padded on adjacent needles. A complete weave has 6 loop rows. The fabric obtained by this invention is close-fitting, comfortable, breathable, and resistant to deformation, making it highly practical.

The present application belongs to the technical field of synthesis of all-organic polymer dielectric film, and particularly relates to a copolymerized polyamide with dielectric function containing nylon 1 chain segment and a preparation method, the preparation method of the dielectric polyamide film containing nylon 1 chain segment comprising the following steps: synthesis of nylon 1 with different polymerization degrees, butane diacid anhydride end-capping nylon 1, and salt formation of the end-capped product (referred to as "PA1 diacid") and piperazine, copolycondensation reaction of piperazine-PA1 diacid salt and piperazine-dodecanedioic acid salt, and hot-pressing forming, etc. In the present application, the piperazine-PA1 diacid salt and the piperazine-dodecanedioic acid salt are copolycondensed through high temperature and high pressure, the high dielectric constant of the nylon 1 chain segment is combined with the unique low dielectric loss of the piperazine nylon, the nylon 1 is embedded into the piperazine nylon matrix as a dielectric function chain segment, and the dielectric polyamide film containing the nylon 1 chain segment is directly prepared through simple hot-pressing forming.

The utility model provides a direct-current brushless external rotor motor, which comprises a base and an external rotor assembly rotationally connected to the base, and the lower end of a rotating shaft in the external rotor assembly is rotationally connected with the base through a bearing; a concave cavity is formed in the middle of the outer bottom of the base, a supporting ring made of a metal material is embedded in the concave cavity, the bearing is embedded in the supporting ring and is in close fit with the supporting ring, the supporting ring is fastened to the base, and the lower end of the rotating shaft is inserted into the bearing and is rotationally connected with the supporting ring through the bearing; according to the utility model, the displacement of the bearing and the support ring can be avoided, so that the eccentricity of the rotating shaft can be avoided, and the coaxiality of the rotating shaft can be ensured when the direct-current brushless outer rotor motor works.

This invention relates to a method for preparing a particle-reinforced zirconium-based amorphous gradient composite coating, belonging to the technical field of wear-resistant and corrosion-resistant coating material preparation. The invention includes (1) preparing ZrAl powder-coated Al2O3 reinforcing particles; (2) preparing ZrAlCu powder-coated Al2O3 reinforcing particles; (3) preparing a particle-reinforced zirconium-based amorphous gradient composite coating material; and (4) spraying the particle-reinforced zirconium-based amorphous gradient composite coating material onto the substrate surface to form a coating. By using Al2O3 reinforcing particles, this invention overcomes the problems of high room-temperature brittleness and poor wear resistance in amorphous alloys. The preparation method yields a coating material with high hardness, good bonding strength, and excellent corrosion and wear resistance, providing more comprehensive protection to the substrate after coating formation.