15results about How to "Improve flex resistance" patented technology

The invention belongs to the technical field of sealing materials and synthetic rubber, and particularly discloses a high and low temperature resistant, wear resistant and fatigue resistant ethylene propylene rubber material and a preparation method thereof. According to the invention, the ethylene propylene rubber with low ethylene content and high Mooney viscosity is used as a base material, and the flexing resistance of a rubber system is improved by adding the small-particle-size high-wear-resistance carbon black, the high-structure-degree fast extruding carbon black, the compounded semi-reinforcing carbon black and the white carbon black as reinforcing filling materials. The low temperature resistance of the rubber is improved by adding a composite plasticizer (paraffin oil is compounded with a small amount of fatty acid ester plasticizer). Meanwhile, peroxide is selected, and a small amount of sulfur is used as a vulcanization system, so that the flexing resistance can be considered while the high-temperature resistance is ensured. And finally, the anti-aging agent is supplemented to enhance the protection effect on aging caused by heat and oxygen, so that the heat resistance and fatigue resistance of the rubber material are integrally improved. The rubber material provided by the invention can be prepared by adopting a universal mixing process in the rubber industry, and is simple in process and convenient to operate.

The application provides a two-section sole structure and shoes thereof, and belongs to the technical field of shoemaking. The two-section sole structure comprises a front section foamed outsole, a rear section foamed outsole and an intermediate rubber connecting piece connecting the front section foamed outsole and the rear section foamed outsole; the front section foamed outsole and the rear section foamed outsole are provided with a lap joint surface in a lap joint area with the intermediate rubber connecting piece. By optimizing the hardness, thickness and lap joint process of the intermediate rubber connecting piece, the bending resistance and interface bonding durability of the bending area are effectively improved.

This utility model discloses a hydraulic gate opener cylinder with an anti-bending structure, comprising: a cylinder body, the upper side of which is tightly fitted with an end cap, and the end cap and the cylinder body are connected by fastening screws arranged in an array; further comprising: an anti-bending mechanism for increasing rigidity is provided inside the cylinder body, and reinforcing ribs are provided on the outer side of the cylinder body, arranged in an array; a rigid support mechanism for connection is provided on the outer side of the cylinder body, and an annular sleeve is provided on the outer side of the cylinder body. In this hydraulic gate opener cylinder with an anti-bending structure, the piston rod is slidably connected to the cylinder body through a bushing, forming a rigid support point to distribute lateral loads and achieve an anti-bending effect. The hollow rod is slidably connected to the connecting rod, thereby limiting further radial displacement of the piston rod and avoiding uneven force due to excessive clearance, thus improving the overall anti-bending capacity of the cylinder.

The utility model discloses a bending-resistant cable, which comprises main wire cores and filling strips, and is characterized by further comprising a support core, a wrapping layer, a braid layer and a sheath. And the main wire cores, the supporting cores and the filling strips are twisted to form the cable. And after cabling, a non-woven fabric is wrapped to form a wrapping layer. And the braid layer is formed by weaving aramid yarns outside the wrapping layer. And the sheath is extruded outside the braid layer by adopting chloroprene rubber. The cable is simple in structure, and is provided with the supporting cores, thereby greatly improving the tensile capability of the cable, and greatly improving the use safety.

The invention provides a rubber composition for tires as well as a preparation method and application of the rubber composition. According to the rubber composition for the tire, disclosed by the invention, the smoke sheet rubber with high molecular weight is applied, so that the mechanical property and the dynamic property of vulcanized rubber are greatly improved, and the neodymium butadiene rubber with wear resistance, fatigue aging resistance and lower heat generation is adopted; and the solution polymerized styrene-butadiene rubber which has higher thermal stability and keeps good flexing resistance at high temperature is applied, so that the comprehensive performance of the formula is improved in multiple aspects. According to the invention, the super wear-resistant N134, the bio-based white carbon black and the conductive carbon black are adopted, so that ultrahigh wear resistance of the formula is provided, heat generation is reduced, and the tire is prevented from losing efficacy due to accumulation of a large amount of heat in the continuous operation process; a high inorganic metal oxide filling amount method is adopted, the heat conductivity coefficient of the formula is greatly improved, the tolerance performance of the formula to heat accumulation is further improved, generated heat is timely guided out and dissipated in the use process under extreme conditions, and the running safety of tires is guaranteed.

The invention discloses a functionalized rubber branching agent, the branching agent is a functionalized butadiene / styrene copolymer, the structure of the branching agent is # imgabs0 #, and Bd is a polymerized butadiene unit; # imgabs 1 # is an amine-containing N, N-dialkylamino styrene compound, the content of the amine-containing N, N-dialkylamino styrene compound in the branching agent copolymer is 1-15%, and R1 and R2 are respectively and independently selected from alkyl with 1-4 carbon atoms. The invention also discloses a preparation method and application thereof. When the rubber branching agent is used for modifying rare earth butadiene rubber, the viscosity of a rubber solution in the polymerization process can be reduced, more functional groups can be introduced into a molecular chain, and the functional groups can enhance the dispersion of reinforcing filler, especially white carbon black, in a rubber matrix and improve the strength, flexing resistance and other properties of the butadiene rubber; the synthesized butadiene rubber is suitable for being used as a high-performance tire sidewall and tread combined rubber.

This invention provides a textile coating with a cracked effect and its preparation method, relating to the field of textile coating technology. The textile coating with a cracked effect comprises, from bottom to top, a base layer, a cracked layer, and a protective layer, starting from a textile substrate; at least one of the base layer and the cracked layer contains 1,3-propanediol. This invention has found that adding 1,3-propanediol to the base layer and / or the cracked layer can significantly improve the flexural resistance of the textile coating with a cracked effect.

The invention belongs to the technical field of aircraft tires, and particularly relates to graphene-reinforced inner liner rubber for an aircraft tire and a preparation method of the graphene-reinforced inner liner rubber. The graphene reinforced aircraft tire inner liner rubber provided by the invention is prepared from 60 to 80 parts of halogenated butyl rubber, 10 to 30 parts of natural rubber, 10 to 20 parts of butadiene styrene rubber, 10 to 40 parts of N326 carbon black, 20 to 50 parts of semi-reinforced carbon black, 3 to 5 parts of dibutyl phthalate, 0.5 to 2 parts of stearic acid, 3 to 5 parts of zinc oxide, 0 to 1 part of magnesium oxide, 1 to 3 parts of tackifying resin, 1 to 2 parts of homogenizing agent, 1.5 to 2 parts of anti-aging agent, 0.5 to 2 parts of accelerant, 1 to 2 parts of insoluble sulfur and 0 to 0.5 part of scorch retarder. The invention designs the formula of the inner liner rubber for the aircraft tire, which is excellent in air tightness, good in mechanical property and excellent in aging resistance, and the inner liner rubber can maintain the stability of the internal air pressure of the aircraft tire for a long time and can effectively ensure the use safety of the aircraft tire.

The invention relates to the field of rubber, and discloses rubber processing modified masterbatch, a preparation method and application thereof, a rubber composition, vulcanized rubber and a preparation method thereof, the rubber processing modified masterbatch comprises maleic acid series monomers, dicumyl peroxide, butadiene styrene rubber, white oil and N, N-dimethylaniline; wherein relative to 100 parts by weight of butadiene styrene rubber, the content of the maleic acid series monomer is 133 to 400 parts by weight, the content of the dicumyl peroxide is 10 to 67 parts by weight, the content of the white oil is 17 to 100 parts by weight, and the content of the N, N-dimethylaniline is 7 to 40 parts by weight; the modified rubber master batch for rubber processing can improve the compatibility and dispersity of maleic acid series monomers in a rubber matrix, so that the strength and wet skid resistance of vulcanized rubber are improved, and the rubber master batch is good in flexing resistance.

This invention relates to the field of rubber product technology, and provides a rubber composition and a rubber tire. The rubber composition comprises: 5-70 phr of natural rubber, 10-40 phr of light butadiene rubber, 1-70 phr of high cis-conjugated diene polymer, 1-20 phr of precipitated silica, 1-15 phr of silane coupling agent, 30-50 phr of general-purpose rubber carbon black, 1-10 phr of processing oil, 7-20 phr of resin, 3-6 phr of processing aid, 1-6 phr of activator, 1-6 phr of vulcanizing agent, and 1.5-5.5 phr of accelerator. The rubber composition includes one or both of light butadiene rubber and high cis-conjugated diene polymer. The rubber composition provided in this application, when applied to the bead of a rubber tire, exhibits excellent fatigue and tear resistance properties, extending the tire's service life.

The utility model discloses a shoe material cutting device for shoemaking production. The shoe material cutting device comprises a plurality of layers of material placing frames, the supporting frame is fixedly connected with a gluing assembly, the output end of the gluing assembly is connected with two glue rollers, the gluing assembly is used for driving the glue rollers to rotate, the glue rollers are rotationally connected to the supporting frame, two auxiliary rollers are arranged on the two sides of the two glue rollers, the auxiliary rollers are rotationally connected to the supporting frame, and a multi-layer feeding frame is arranged on one sides of the auxiliary rollers; the multi-layer feeding frame is fixedly connected to the supporting frame. According to the utility model, uniform gluing is carried out when multiple layers of shoe materials are pressed through the gluing assembly, glue layers can fully permeate material pores to form a firm anchoring effect, the service life of shoes is prolonged, the comfort and the appearance are optimized, the pressing assembly is arranged to be matched with the pressing roller to press and flatten multiple layers of shoe soles, and then uniform cutting is carried out, so that the production efficiency is improved. The interlayer peeling strength is enhanced, the flatness, the cutting precision and the material utilization rate of the shoe sole are higher, and the production efficiency and the automation level are improved.

The invention relates to the field of rubber, and discloses a rubber processing modified master batch, a preparation method and application thereof, a rubber composition, vulcanized rubber and a preparation method thereof, the rubber processing modified master batch comprises a methacrylic acid series monomer as shown in a formula (1), dicumyl peroxide, trimethylolpropane triacrylate, styrene butadiene rubber and white carbon black; r1 is C1-C4 alkyl or a structure as shown in a formula (2); wherein n is an integer from 1 to 2; relative to 100 parts by weight of butadiene styrene rubber, the content of the methacrylic acid series monomer is 75-400 parts by weight, the content of the dicumyl peroxide is 0.5-13 parts by weight, the content of the trimethylolpropane triacrylate is 37-200 parts by weight, and the content of the white carbon black is 50-300 parts by weight. According to the rubber processing modified masterbatch, the white carbon black has better dispersity in a rubber matrix, and the interaction between the white carbon black and the rubber matrix is stronger.

The utility model provides a flat deflection-resistant elevator control cable suitable for a high-rise building, and the cable comprises a power cable core which comprises a first wire core, the first wire core is wrapped by a first non-hygroscopic wrapping tape, and the first non-hygroscopic wrapping tape is filled with a first filling material; the control cable core comprises a second wire core, the second wire core is wrapped with a second non-hygroscopic wrapping tape, the second non-hygroscopic wrapping tape is filled with a second filling material, and the second non-hygroscopic wrapping tape is externally provided with a shielding layer and a third non-hygroscopic wrapping tape; the first wire core and the second wire core have the same structure and comprise conductors, reinforcing elements are arranged among the plurality of soft copper wires, and an insulating layer is extruded outside the plurality of soft copper wires; the power cable cores and the control cable cores are horizontally and alternately arranged and wrapped by the outer protection layer, and the reinforcing elements are utilized to increase the distortion resistance and the pulling resistance of the first cable core and the second cable core, so that the cable has good warping resistance, and signal and power output interruption caused by cable breakage is avoided.

The utility model discloses a battery module integration cover in the technical field of new energy, which comprises a cover plate assembly arranged on a battery module, and the cover plate assembly comprises a wire harness isolation plate, a connecting aluminum bar and an FPC (flexible printed circuit) acquisition plate which are arranged on a battery cell group in a covering manner. A plurality of anti-explosion avoiding grooves corresponding to the battery cell groups and a plurality of groups of electrode avoiding grooves arranged in pairs are formed in the wire harness isolation plate. The battery module integrated cover disclosed by the utility model has excellent length compatibility, mounting convenience and structural stability, is convenient to adapt to battery modules with various specifications and lengths, and is provided with an anti-explosion avoiding structure and a fire-fighting sensing line storage structure, so that the safety of equipment is effectively improved. The cantilever structure of the FPC acquisition board increases the flexure resistance and the folding resistance, and the double-fuse structure increases the safety and the after-sales convenience.