65results about How to "Improve melt fluidity" patented technology

The invention belongs to the technical field of high polymer materials, and particularly relates to spinning-grade all-aryl polynaphthyl ester resin and a preparation method thereof. According to the invention, p-hydroxybenzoic acid, 6-hydroxy-2-naphthoic acid, aromatic dicarboxylic acid and ethylene glycol monomer are adopted as raw materials, polymerization reaction is carried out under the action of the catalyst, spinning-grade all-aryl polynaphthyl ester resin is successfully obtained under specific reaction conditions, and the spinning-grade all-aryl polynaphthyl ester resin has high molecular weight, low impurity content and good heat resistance, and can be used for preparing the spinning-grade all-aryl polynaphthyl ester resin. The melt fluidity is good, the shear thinning phenomenon is more obvious, and the method can be directly used for preparing the polynaphthalene ester fiber.

The present invention discloses a thermoplastic polyimide resin and a preparation method thereof, wherein the preparation method of the thermoplastic polyimide resin comprises the following steps: S1, mixing a dianhydride monomer with a polar solvent, adding a diamine monomer, stirring, and obtaining a polyamic acid solution; S2, adding an organic base to the polyamic acid solution, adding a dehydrating agent, stirring, adding the reaction solution to an alcohol solvent to precipitate a precipitate, collecting the precipitate, washing, and drying, and obtaining a thermoplastic polyimide resin. The diamine monomer is a large sterically hindered biphenyl diaryl ether diamine monomer. The present invention introduces a twisted non-coplanar biphenyl diaryl ether skeleton to reduce the intermolecular stacking density, thereby effectively improving the T of the thermoplastic polyimide resin. g , T m and melt fluidity, effectively improving the melt processing performance of the material.

The invention provides an ethylene / alpha-olefin copolymer as well as a preparation method and application thereof. The molar percentage content of an alpha-olefin ternary sequence EXXXE measured by a nuclear magnetic resonance carbon spectrum in the ethylene / alpha-olefin copolymer is 4.5%-13%; wherein E represents an ethylene-based structural unit, and X represents an alpha-olefin-based structural unit. Through the special design of the intrinsic fine chain structure, the polymer has high cross-linking reaction activity, high cross-linking vulcanization reaction speed and high cross-linking degree, also has good melt flowability, can be widely applied to packaging materials of photovoltaic modules, and has wide application prospects. On the basis of not needing to regulate and control the components and the use amount of a cross-linking auxiliary agent in the cross-linking process and not depending on a cross-linking process, the processing speed and the adhesive film strength of the photovoltaic packaging material are remarkably improved, meanwhile, the use amount of the cross-linking auxiliary agent can be reduced, and the preparation method has important significance on cost reduction and efficiency improvement of a photovoltaic module.

The invention discloses a polypropylene composite material with high dielectric constant, high strength and high modulus as well as a preparation method and application thereof, and belongs to the technical field of polymer composite materials. According to the composite material, homo-polypropylene is used as a matrix and matched with a high-dielectric-constant composite filler, a modified reinforcing filler and a functional additive, and through reasonable component design and process optimization, the dielectric property and the mechanical property are synergistically improved. Wherein the barium titanate-graphene with the core-shell structure is used as a high-dielectric-constant composite filler, and an efficient dielectric path can be constructed in a polypropylene matrix; the epoxy resin modified chopped glass fiber can significantly enhance the mechanical strength and modulus of the material; the maleic anhydride grafted polypropylene effectively improves the interfacial compatibility of the filler and the matrix. The dielectric constant (10GHz) of the prepared composite material is greater than or equal to 8, the tensile strength is greater than or equal to 60 MPa, and the bending modulus is greater than or equal to 4000 MPa. The composite material has excellent dielectric properties and mechanical properties, and can be widely applied to the fields of electronic appliances, high-frequency communication, new energy automobiles and the like.

The invention discloses an electropositive non-magnetic toner and a preparation method thereof, and relates to the field of printing supplies. The electropositive non-magnetic toner comprises 100 parts by weight of bonding resin, 10.8-15.6 parts by weight of a non-magnetic coloring agent, 4.5-5.5 parts by weight of a positive charge control agent, 1-5 parts by weight of a release agent and 8-10 parts by weight of an anti-bonding auxiliary agent, and the anti-bonding auxiliary agent comprises hydrophobic silicon dioxide with the particle size range of 40-50 nm and hexagonal boron nitride micro powder with the particle size range of 100-200 nm. The weight ratio of the hydrophobic silicon dioxide to the hexagonal boron nitride micro powder is (10-15): 1. The electropositive non-magnetic toner provided by the invention is slightly influenced by a high-temperature and high-humidity environment, and is good in stability, printing quality and printing stability.

The invention belongs to the technical field of high polymer materials, and discloses a polyvinyl alcohol composition and a preparation method thereof, and a polyvinyl alcohol film and a preparation method thereof, the composition contains polyvinyl alcohol, a plasticizer, a melt flow modifier and a stabilizer; the content of the polyvinyl alcohol is 65 to 85 parts by weight, the content of the plasticizer is 12 to 30 parts by weight, the content of the melt flow modifier is 2.5 to 4 parts by weight, and the content of the stabilizer is 0.5 to 1 part by weight. The composition disclosed by the invention can meet the requirements of melt extrusion and continuous two-way stretching, the polyvinyl alcohol film can be rapidly prepared, and the film is excellent in performance.

The present application relates to the technical field of resin, in particular to a conductive polypropylene composite material and a preparation method thereof.In view of the problems of poor processing fluidity, easy shear damage of conductive network and deterioration of mechanical properties caused by high filling of conductive filler in the prior art, the present application realizes the low volume resistivity, high melt flow rate and excellent mechanical toughness by the solid phase pre-coating technology, and effectively balances the conductivity, processability and strength.

The application relates to the technical field of high-molecular heat-conducting composite materials, and particularly discloses a low-thermal-resistance grafted modified polyethylene material and a preparation method thereof.The low-thermal-resistance grafted modified polyethylene material comprises polyethylene resin, alpha-olefin ethylene copolymer, polar grafting monomer, initiator, modified sheet-shaped heat-conducting filler, spherical heat-conducting filler, composite antioxidant and functional additive.The modified sheet-shaped heat-conducting filler and the functional additive are compounded and added into a polyethylene matrix through a specific formula, the components interact with each other, the filler agglomeration is effectively inhibited, and the interface combination is strengthened, so that the heat transfer efficiency in the resin is significantly improved under the premise of not excessively increasing the filler amount, the obtained grafted modified polyethylene material successfully breaks through the bottleneck that traditional heat-conducting polyethylene is difficult to simultaneously consider heat conduction, mechanics and processing performance, and finally exhibits the comprehensive characteristics of high heat conductivity, excellent mechanical strength and good melt flowability.

The application belongs to the technical field of modified functional fibers, and particularly relates to a manufacturing method of high-bulkiness special-shaped hollow fibers. The low-crystalline polyester chip is obtained by modifying the polyester, and the functional components such as graphite and tourmaline are introduced, and the high-bulkiness special-shaped hollow fibers are prepared by using a special-shaped spinneret to melt and spin, so that the hollow degree and bulkiness of the fibers are effectively improved, good breaking strength is obtained, and the oxygen index is effectively increased.

The invention discloses a polyethylene composite material which comprises the following components in parts by weight: 69-86 parts of LDPE (Low-Density Polyethylene); 4.5 to 11 parts of microencapsulated ammonium polyphosphate; 3 to 5 parts of melamine polyphosphate; 2-4 parts of coupling agent surface modified magnesium hydroxide; and 0.5 to 1.5 parts of polyether modified polysiloxane. By selecting a compound flame-retardant system of microencapsulated ammonium polyphosphate / melamine polyphosphate / coupling agent surface-treated magnesium hydroxide, the flame retardance of UL-94 (2mm) V <-1 > or above can be realized under the condition of lower additive amount, and meanwhile, the defects of poor thin-wall processability and difficulty in dyeing of a flame-retardant polyethylene composite material in the prior art are improved; the method is suitable for preparing toys, household articles, simulation ornaments and the like.

The invention discloses a polypropylene composition as well as a preparation method and application thereof, and relates to the technical field of macromolecules. The polypropylene composition comprises the following components in parts by weight: 48-66 parts of polypropylene resin; 7 to 14 parts of polycarbonate; 1-7 parts of a compatilizer; and 2-12 parts of tackifying resin. According to the invention, the problem of poor compatibility of polypropylene and polycarbonate in the blending process is solved, so that the polypropylene composition has excellent mechanical properties and heat-resistant stability at the same time.

The application discloses a kind of high flow PC / ABS alloy material for precision injection electroplated piece and preparation method and application thereof, belong to high polymer alloy material technical field.The PC / ABS alloy material is made by the raw material comprising the following weight parts by melting blend: polycarbonate resin 40-60 parts, acrylonitrile-butadiene-styrene copolymer resin 30-50 parts, core-shell structure toughening agent 2-5 parts, maleic anhydride grafting compatilizer 1-3 parts, 2-mercapto benzimidazole 0.2-1.0 parts, bisphenol A type epoxy resin 2-5 parts, microcrystalline wax 0.5-1.5 parts, antioxidant 0.1-0.8 parts, heat stabilizer 0.05-0.5 parts.The application effectively balances the three mutually contradictory properties of high flowability, low temperature toughness and electroplating adhesion by the synergistic cooperation of each component, the material performance reaches or exceeds taihua AC2300 level, compatible with the conventional electroplating process parameters of taihua AC2300, and meets the comprehensive performance requirements of automobile precision injection electroplated piece.

This invention relates to the field of cable technology and discloses a composite cross-linked polyethylene insulated cable integrating signal and power transmission. The cable comprises, from the inside out, a composite core, an inner semi-conductive shielding layer, a composite cross-linked polyethylene insulation layer, and an outer semi-conductive shielding layer. The composite cross-linked polyethylene insulation layer is made by extruding and cross-linking raw materials containing the following parts by weight: 90-95 parts low-density polyethylene granules, 5.42-11.6 parts solid premix, and 0.7-2.0 parts liquid co-solution. The solid premix contains N,N'-m-phenylenebismaleimide and tetrabutyl titanate, and the liquid co-solution contains tetramethyltetravinylcyclotetrasiloxane and dicumyl peroxide. This invention anchors by constructing a coordination network, eliminates space charge and micropores in the insulation layer, improves withstand voltage, reduces signal attenuation, and ensures the long-term stability of the integrated power and signal transmission of the composite cable.

The application provides a low-temperature laminated co-extrusion adhesive film and a preparation method and a photovoltaic module, and relates to the technical field of photovoltaic devices.The low-temperature laminated co-extrusion adhesive film comprises a laminated EVA film layer and a TPO film layer, and the EVA film layer and the TPO film layer are fused at the interface part; the content of vinyl acetate in the EVA film layer is 15-40%, and the crosslinking degree of EVA is not less than 65%; the raw material for forming the TPO film layer comprises an ethylene-alpha olefin copolymer; the melt index of the ethylene-alpha olefin copolymer is 0.5-10 g / 10 min, and the melting point is 50-115 DEG C; the light transmittance of the low-temperature laminated co-extrusion adhesive film for light with a wavelength of 380-1100 nm is greater than 88%. The low-temperature laminated co-extrusion adhesive film provided by the application not only can realize low-temperature crosslinking, but also has high bonding performance with a base material and long-term anti-creep performance.

The invention relates to the technical field of acrylate copolymers, in particular to a preparation method of a high-melt and high-fluidity acrylate copolymer. The preparation method of the high-melt and high-fluidity acrylate copolymer comprises the following specific steps: firstly, mixing an emulsifier with water to obtain an emulsified solution, then reacting hydroxyl acrylate with stearic acid, grafting a long-chain branch, then pre-emulsifying reactants by using the emulsified solution, and finally reacting the pre-emulsified reactants, so as to obtain the high-melt and high-fluidity acrylate copolymer. Through the modification of hydroxyl acrylate, the melt flowability and impact strength of the acrylate copolymer are improved; polysiloxane is introduced in the preparation process, so that the melt flowability and the impact strength of the acrylate copolymer are further improved; in addition, a non-ionic surface active agent is introduced into the polysiloxane modified acrylate copolymer by adopting a swelling-deswelling method, so that the mechanical property of the acrylate copolymer is improved.

This invention belongs to the field of high-performance fiber composite materials technology, specifically relating to a method for preparing low-dielectric ramie fiber reinforced polycarbonate composite materials. First, ramie fibers with acrylate-type double bonds modified on their surface are prepared. Then, poly(styrene-isoprene) modified ramie fibers are prepared by copolymerizing the acrylate-type ramie fibers with styrene and isoprene. Next, polyphenylene ether and the poly(styrene-isoprene) modified ramie fibers are mixed evenly and added to a hopper. A polyphenylene ether / ramie fiber alloy is prepared using a twin-screw extruder. Finally, the polyphenylene ether / ramie fiber alloy is mixed evenly with polycarbonate and added to a hopper. A low-dielectric ramie fiber reinforced polycarbonate composite material is prepared using a twin-screw extruder. The molecular weight of the modified ramie fiber polymer is adjustable, as is the ratio of styrene to isoprene. The polystyrene segments effectively improve the compatibility between ramie fibers and polyphenylene ether, while the polyisoprene segments effectively enhance the toughness of the polyphenylene ether / ramie fiber alloy.

The invention discloses a preparation method of a high-toughness wood-plastic composite wire rod for 3D printing, and belongs to the field of wood-plastic composite materials. The invention aims to solve the problems of rough surface and low toughness of the wood-plastic composite wire rod caused by poor compatibility of the existing wood fiber and thermoplastic plastic. The method comprises the following steps: 1, weighing; 2, primary melt extrusion; 3, carrying out secondary melt extrusion; and 4, wire drawing. The preparation method is used for preparing the high-toughness wood-plastic composite wire for 3D printing.

This application relates to a low-temperature resistant and creep-resistant hot-melt pressure-sensitive adhesive and its preparation method, belonging to the field of label adhesive technology. The raw materials for preparation include the following components in parts by weight: 35-45 parts of modified styrene-isoprene-styrene block copolymer, 10-15 parts of ethylene-vinyl acetate copolymer, 20-40 parts of hydrogenated petroleum resin, 15-30 parts of terpene resin, 8-18 parts of naphthenic oil, 0.5-1.5 parts of antioxidant, and 4-8 parts of polyisobutylene. This application introduces trifluoromethyl and epoxy groups simultaneously into the styrene-isoprene-styrene molecular chain through free radical grafting. The former imparts low surface energy to the adhesive layer, ensuring rapid wetting and initial tack at -20°C; the latter constructs a chemical network through latent ring-opening crosslinking, synergistically enhancing the physical entanglement of polyisobutylene, achieving simultaneous improvement in low-temperature rapid adhesion and high-temperature creep resistance, suitable for harsh environments such as cold chain labels.

A PK modification production system comprises a mixing feed hopper and an extruder, the mixing feed hopper is connected with a silane coupling agent source, a PK source and an additive source, the downstream end of the mixing feed hopper supplies materials to the extruder, the extruder is connected with a vacuum source, and the discharge end of the extruder discharges modified PK products through a melt pump and an underwater granulator. The device is simple in structure and low in maintenance cost, PK products can be modified in a targeted mode, and market requirements are met.

This invention proposes a screw barrel accessory for high-speed, high- and low-pressure blown film extrusion equipment, applicable to blown film extruders. The screw includes a feed end and a discharge end at its two ends. Along the axial direction from the feed end to the discharge end, the screw sequentially features equal-depth screw groove sections, wavy gradient screw groove sections, a diamond sorting area, another wavy screw groove section, and a four-in, four-out multi-channel structure. This invention optimizes material plasticization, dispersion, flowability, and pressure control through a combination of wavy screw grooves, a dense tooth structure, a diamond sorting area, and a through-hole structure. The wavy and gradient screw grooves utilize a special structure to perform multiple shearing and kneading operations on the material. Simultaneously, the orderly arrangement of functional sections and the reasonable axial segment dimensions ensure smooth and stable screw operation, making it suitable for long-term continuous operation in high-speed, high- and low-pressure blown film production lines. This reduces the defect rate, improves overall production efficiency and economic benefits, and the integrated structural design enhances the overall strength of the screw.

The invention relates to the technical field of modified resin technology, in particular to a special material for large-diameter polyphenyl ether monofilament spinning and a preparation method and application thereof, and the special material for spinning is composed of 85-95 wt% of polyphenyl ether resin and 5-15 wt% of polydimethylsiloxane modified nano silicon dioxide. In the polydimethylsiloxane modified nano silicon dioxide synthesized by the invention, the content of the polydimethylsiloxane in percentage by mass is 30-50%. The nano silicon dioxide plays a role in fixing the polydimethylsiloxane, migration of the polydimethylsiloxane is inhibited, and the melt viscosity of the polyphenyl ether resin is reduced due to introduction of the polydimethylsiloxane, so that the melt fluidity of the polyphenyl ether resin meets the spinning requirement of large-diameter monofilaments.

The invention belongs to the technical field of high polymer material modification, and relates to a high-elasticity and high-stability PVC (Polyvinyl Chloride) granule, a preparation method and application in a medical catheter. The granules are prepared from the following raw materials in parts by weight: 100 parts of PVC resin powder, 50-60 parts of a plasticizer, 5-10 parts of epoxidized soybean oil, 0.6-1.5 parts of a composite heat stabilizer, 0.4-6 parts of an elastomer, 0.4-0.8 part of a processing aid and 0.1-0.4 part of a lubricant, and the granules are obtained by pre-plasticizing the raw materials, performing melt extrusion through an extruder and performing granulation molding. A high-elasticity and high-stability medical catheter body can be obtained by carrying out melting secondary extrusion molding on the granules, a medical catheter product can be obtained by assembling the catheter body, and the medical catheter product comprises infusion, nursing or implantation intervention type medical catheters. The high-elasticity and high-stability PVC aggregate has excellent elasticity, tensile toughness, thermal stability and long-term stability, and can endow a catheter with excellent elasticity and stability when being applied to medical catheter products.

The invention relates to the field of inorganic non-metallic materials, and discloses high-modulus aluminosilicate glass and a preparation method thereof.The preparation method comprises the steps that SiO2, Al2O3, CaO, MgO, La2O3, Y2O3, TiO2 and Li2O are fully mixed and then put into an alumina crucible, melting is conducted for 2 h at the temperature of 1580 DEG C, full clarification is conducted, it is guaranteed that bubbles do not exist, and uniform melting is conducted, so that molten glass liquid is obtained; pouring the molten glass into a mold for shaping and carrying out glass transition, and then carrying out heat preservation for 2-3 hours at the temperature close to the glass transition temperature; after heat preservation is finished, the heat preservation temperature is reduced to the room temperature at the speed of 2 DEG C / min, so that the internal stress of the glass is eliminated, and the high-modulus aluminosilicate glass is prepared; the problems that in the prior art, the balance of'high modulus', 'low liquid phase temperature 'and'good formability' is difficult to realize at the same time, and high-modulus glass is difficult to melt, poor in formability and strong in crystallization tendency are solved.

The application relates to the field of novel template materials, and particularly discloses a high-strength glass fiber modified polypropylene material building template and a preparation method thereof. The high-strength glass fiber modified polypropylene material building template is formed by injection molding of modified polypropylene master batches, the modified polypropylene master batches comprise the following raw materials in parts by weight: polypropylene master batches 50-80 parts, reinforcing agent 10-20 parts, composite flow improver 3-6 parts, and compatilizer 4-8 parts, wherein the reinforcing agent is glass fiber; and the preparation method comprises the following steps: firstly, mixing the raw materials, and then obtaining master batches through extrusion granulation; and then injection molding the master batches into the building template. The high-strength glass fiber modified polypropylene material building template has the advantages of high building template size stability.

The invention discloses a bonded ferrite magnetic powder for injection molding, and a preparation method and application thereof. The bonded ferrite magnetic powder for injection molding is prepared by adding fine-grained ferrite magnetic powder with an average particle size of 0.5 to 1.2 microns and coarse-grained ferrite magnetic powder with an average particle size of 3.0 to 6.0 microns into a ball mill for ball milling, according to a weight ratio of 10 to 35 wt % of the fine-grained ferrite magnetic powder, thereby obtaining a coarse and fine mixed magnetic powder. The bonded ferrite magnetic powder for injection molding can be mixed with a rubber binder, a plasticizer, and a stabilizer to prepare an injection-molded flexible bonded magnet. The present invention can greatly improve the fluidity of the magnetic powder and the magnetic properties of the magnet, exceeding the level of existing similar products, and can increase the upper limit of the use temperature of the injection-molded flexible bonded magnet from 80° C. to 125° C., which broadens its application field and increases the stability and reliability of the injection-molded flexible bonded magnet.

The application discloses a low-heat-release, low-smoke-density flame-retardant polyamide material and a preparation method and application thereof, and belongs to the technical field of high polymer materials. The material comprises nylon resin 52-61%, a flame retardant 18-26%, a flame-retardant synergist 6-10%, a plasticizer 8-15%, a coupling agent 0.5-1.0%, an antioxidant 0.3-1.0% and a lubricant 0.3-1.0%, and is prepared through mixing, melt mixing, extrusion and granulation. The application effectively reduces the heat release and the smoke density of the polyamide material during combustion through the synergistic effect of the components such as the flame retardant, and meanwhile, good mechanical properties and processing stability are maintained, thereby meeting the demand of high-safety-grade application scenarios.

The invention discloses a high-temperature-resistant hot melt adhesive and a preparation method thereof, and relates to the technical field of hot melt adhesives. The high-temperature-resistant hot melt adhesive is prepared from the following raw materials in parts by weight: 25 to 35 parts of modified polyimide resin, 20 to 30 parts of modified benzoxazine resin, 8 to 12 parts of carboxyl-terminated nitrile rubber, 5 to 8 parts of C5 / C9 copolymerized petroleum resin, 3 to 5 parts of hydrophobic modified nano silicon dioxide, 1 to 2 parts of silicone powder, 0.5 to 1.0 part of antioxidant 1010, 0.3 to 0.8 part of zinc stearate and 0.05 to 0.1 part of tetrabutylammonium bromide. The high-temperature-resistant hot melt adhesive is scientific in raw material ratio, core resin is modified to improve heat resistance and compatibility, filler such as hydrophobic nano silicon dioxide is added to enhance performance, the preparation process is controllable, nitrogen protection is achieved in the whole process, moisture absorption is prevented through granulation and drying treatment, and a finished product is excellent in high-temperature resistance, good in comprehensive performance and good in storage stability.

The invention discloses an anti-aging hyper-branched nylon 6 resin with high color absorption and a preparation method of the anti-aging hyper-branched nylon 6 resin. The anti-aging high-color-absorption hyperbranched nylon 6 resin has the structural characteristics as shown in a formula I. The preparation method comprises the following steps: 1) selecting caprolactam as a polymeric monomer and polyacid with an eight-arm structure as a branching agent; 2) taking 4-amino-2, 2, 6, 6-tetramethylpiperidine as an end-capping reagent, and adding an ultraviolet absorbent and a light screening agent; and 3) carrying out melt polycondensation to obtain the anti-aging and high-color-absorption hyperbranched nylon 6 resin. The anti-aging and high-color-absorption hyperbranched nylon 6 resin provided by the invention has the characteristics of simple synthetic route, environment-friendly technical process, high melt flowability, excellent aging resistance, excellent physical and mechanical properties and the like.

The present invention relates to a thermoplastic composition comprising an aromatic polycarbonate and a copper chromium spinel laser direct structuring additive. The composition comprises: a) 85 to 95% by weight of an aromatic polycarbonate; the present invention relates to a composition comprising, by weight, b) 2-15% of a copper-chromium spinel laser direct structuring additive, c) 0.05-5% of a flame retardant comprising a flame retardant salt or an organic flame retardant, d) 0.1-2% of an acid-modified polymer, e) 0-5% of a siloxane-based rubber. The invention also relates to a molded article comprising said thermoplastic composition, to a method for producing a circuit carrier using said molded article, and to a circuit carrier obtained by said method.

This invention relates to a low-temperature, high-elasticity hot melt adhesive film and its preparation method. The hot melt adhesive film, by weight, comprises: 30-50 parts of modified SIS elastomer, 15-25 parts of polyamide resin, 8-15 parts of polycaprolactone diol, 5-10 parts of plasticizer, 8-15 parts of tackifier, 0.5-2 parts of antioxidant, and 0.3-1 parts of heat stabilizer. The modified SIS elastomer is methyl methacrylate-grafted modified SIS with a grafting rate of 8%-15% and a number-average molecular weight of 80,000-120,000. The polyamide resin has a melting point of 70-90℃ and a number-average molecular weight of 5,000-8,000. The hot melt adhesive of this invention has a melting point controlled at 70-90℃, allowing for low-temperature ironing at 90-100℃, effectively protecting temperature-sensitive fabrics such as silk and preventing high-temperature damage. Simultaneously, with the modified SIS elastomer as the core and the cross-linking effect of polycaprolactone diol, it possesses excellent elasticity and flexibility.