1295 results about "Thermoplastic elastomer" patented technology

The invention relates to the technical field of polyurethane films, in particular to a long-acting, stable, flexible, impact-resistant and resistance-reducing protective film and a preparation process thereof. According to the invention, the raw materials such as polyethylene glycol, a modified fluorosilicone monomer, isophorone diisocyanate, hydroxyethyl acrylate, an acrylic antifouling monomer, dodecafluoroheptyl methacrylate and the like are added to prepare the anti-drag coating. Mixing a polyurethane thermoplastic elastomer, aminopropyl polydimethylsiloxane, an antioxidant and an ultraviolet light absorber, and carrying out melt extrusion and blow molding to form a film, so as to obtain a flexible impact-resistant base film; and uniformly coating the surface of the flexible anti-impact base film with the anti-drag coating, and carrying out ultraviolet curing to obtain a finished product. The finished product prepared by the invention has good impact resistance, and can effectively reduce frictional resistance, so that the finished product has wide application prospects in the technical field of polyurethane films.

The invention discloses an anti-shrinkage light, soft and elastic sole foaming material and a preparation method thereof, and belongs to the technical field of footwear products. The light, soft and elastic sole foaming material is formed by chemically foaming an EVA (Ethylene Vinyl Acetate) composite raw material, the EVA composite raw material is prepared from 50 to 70 parts of EVA, 20 to 40 parts of olefin thermoplastic elastomer, 10 to 20 parts of styrene elastomer, 1.5 to 3 parts of maleic anhydride grafted ethylene-octylene copolymer compatilizer, 0.4 to 0.8 part of peroxide cross-linking agent, 3 to 4 parts of foaming agent, 1 to 1.5 parts of zinc oxide, 1 to 1.5 parts of polyethylene wax substance and 0.5 to 1.5 parts of poly (butylene succinate). 0.3 to 1 part of polyamide 12 microspheres and 2 to 3 parts of nano montmorillonite. The foaming material can resist shrinkage when being used as a shoe sole part, and has good rebound performance and the like, so that the high-quality requirement of sneakers, the mass production stability and the like are met.

A joint member having a thermoplastic elastomer composition including components (A), (B), and (C). Component (A): a hydrogenated product of a block copolymer including at least two polymer blocks composed primarily of a vinyl aromatic compound and at least one polymer block including butadiene, wherein, in the hydrogenated product of the block copolymer, a proportion of a hydrogenated product (A1) of a block copolymer having a weight-average molecular weight of 300,000 or more is 30% to 100% by mass, Component (B): a hydrocarbon rubber softener, Component (C): a polypropylene resin, Component (D): a crosslinking agent.

The invention provides a light super-soft fire-resistant flame-retardant optical cable and a preparation method thereof. The light super-soft fire-resistant flame-retardant optical cable sequentially comprises a high-temperature-resistant optical fiber, a filling layer, a flame-retardant loose tube, a reinforcing layer, a heat insulation layer and a fire-resistant flame-retardant layer from inside to outside, the fireproof flame-retardant layer comprises the following preparation raw materials in percentage by mass: 55-65% of plasma activated mineral powder, 25-35% of a thermoplastic elastomer base material subjected to irradiation crosslinking treatment, 8-12% of a phosphorus-nitrogen intumescent flame retardant and 1.5-2.5% of a silane coupling agent; the nano mineral powder comprises a magnesium aluminum silicate compound, and the thermoplastic elastomer matrix comprises a blend of SEBS (Styrene-Ethylene-Butylene-Styrene) and TPU (Thermoplastic Polyurethane). The fire-resistant flame-retardant layer forms a ceramic protection layer at high temperature to perform fire-resistant flame-retardant protection and prevent heat transfer, and meanwhile, the heat insulation layer is matched to further prevent heat from being transferred to the cable core, so that the performance of the optical cable is ensured not to be influenced.

The invention discloses a high-whiteness EVA chemical foaming sole material and a preparation method thereof, and belongs to the technical field of footwear products. The EVA chemical foaming sole material is formed by chemical foaming of an EVA composite raw material. The EVA composite raw materials mainly comprise 50 to 70 parts of EVA, 20 to 40 parts of an olefin thermoplastic elastomer, 0.4 to 0.7 part of a peroxide cross-linking agent, 2 to 4 parts of an AC foaming agent, 1 to 2 parts of zinc oxide, 0.3 to 0.8 part of 6-hydroxy-1, 2, 3, 4-tetrahydroquinoline, 0.5 to 1 part of nano zinc carbonate and 0.5 to 1 part of pentaerythritol tetrastearate. The whitening effect of the sole material can be realized on the premise of protecting the EVA foaming-crosslinking structure; therefore, the attractiveness of the product is improved, the durability is better, the mechanical properties and other properties of the EVA foamed sole are not influenced, and the high-quality requirements of elasticity, pressure resistance, comfort and the like of sports shoes can be met.

The invention discloses a plant oil-based self-healing asphalt modifier based on dynamic crosslinking and a preparation method and application thereof, and belongs to the technical field of plant oil-based modifiers. The preparation method of the plant oil-based self-healing asphalt modifier based on dynamic crosslinking comprises the following steps: fully swelling a styrene thermoplastic elastomer in plant oil; swelling gel is obtained; a cross-linking agent and a vulcanization accelerator are added into the swelling gel, and the plant oil-based self-healing asphalt modifier is obtained through a vulcanization reaction; the plant oil-based self-healing asphalt modifier based on dynamic crosslinking provided by the invention is simple in preparation method, and compared with traditional SBS modified asphalt, the plant oil-based self-healing asphalt modifier has more excellent temperature sensitivity, self-healing property and storage stability, the construction process is lower-carbon and more environment-friendly, and the plant oil-based self-healing asphalt modifier has excellent environmental benefits.

The invention discloses a high-strength and high-resilience TPE (thermoplastic elastomer) and a preparation method thereof in the technical field of high polymer materials, and the elastomer is prepared by taking a hydrogenated styrene block copolymer as a matrix and matching with a polyolefin rigid phase, plasticizing oil and a specific additive. The method is characterized in that two self-made reaction type modifiers are introduced, wherein one self-made reaction type modifier is a core-shell nano reinforcing agent containing an epoxy functional group and polyhedral oligomeric siloxane, and the other self-made reaction type modifier is a furan maleimide bifunctional dynamic cross-linking agent. The nano reinforcing agent is prepared through silane hydrolysis and amination reaction, and can react with a matrix for grafting, so that the strength and creep resistance of the material are remarkably improved; the dynamic cross-linking agent is synthesized through step-by-step isocyanate addition reaction, a cross-linked network can be reversibly formed in the processing process, and the material is endowed with extremely high rebound resilience and low permanent deformation. The obtained product has high strength, high resilience and excellent processability, and is especially suitable for high-end fitness equipment.

The invention discloses a temperature-resistant flame-retardant antibacterial composite polypropylene pipe for water supply, and belongs to the technical field of polypropylene pipes. The pipe is prepared by blending and extruding the following components in parts by weight: 70-80 parts of polypropylene random copolymer, 3-8 parts of modified organosilicon copolymer, 5-15 parts of maleic anhydride grafted polypropylene, 8-15 parts of polyolefin thermoplastic elastomer, an initiator, talcum powder, aluminum hydroxide, nano silicon dioxide, a lubricant, an antioxidant and the like. The modified organic silicon copolymer is prepared through specific steps, and the structure of the modified organic silicon copolymer contains a rigid oxa-phospho-spiro ring, a flexible organic silicon chain segment and a terminal guanidyl group. The rigid structure of the modified organic silicon copolymer is combined with the flexible chain segment, the temperature resistance and low-temperature toughness are improved, the flame retardant effect is achieved through cooperation of the oxa-phospho-spiro ring, the aluminum hydroxide and the organic silicon chain segment, and the molten drop tendency is reduced; guanidyl at the tail end endows long-acting antibacterial performance; vinyl double bonds of the organosilicone chain segment react with polypropylene to form a cross-linked network, so that the high-temperature stability and the creep resistance are improved.

The application belongs to the technical field of intelligent electronic devices, and particularly relates to a high-color-purity multi-color electroluminescent fiber and a preparation method and application thereof. The fiber is prepared by the following steps: preparing lead halide perovskite type nano quantum dots as light conversion particles by a hot injection method, a room temperature supersaturation recrystallization method and the like; grafting and modifying the lead halide perovskite type nano quantum dots on the surface of metal sulfide type electroluminescent particles through a surface ligand to obtain high-color-purity multi-color electroluminescent active material; compounding the light conversion particle modified electroluminescent active material and a transparent thermoplastic elastomer polymer to obtain active slurry, and coating the active slurry on the surface of a conductive fiber through a continuous limited coating process; loading an external electrode on the conductive fiber to obtain the high-color-purity multi-color electroluminescent fiber. The multi-color electroluminescent fiber prepared by the application has various colors and high color purity, and meets the color gamut range required by the luminescent fiber and display fabric.

The embodiment of the invention discloses a preparation method of a solid electrolyte membrane and the solid electrolyte membrane. The preparation method of the solid electrolyte membrane comprises the following steps: providing a composite fiber solution, a thermoplastic elastomer solution, a solid electrolyte matrix and a positive electrode material; performing coaxial electrostatic spinning treatment on the composite fiber solution and the thermoplastic elastomer solution to obtain a fiber adhesive; carrying out ball milling treatment on the fiber adhesive, the solid electrolyte matrix and the positive electrode material to obtain a fibration mixture; and carrying out hot rolling treatment on the fiberized mixture to obtain the solid electrolyte membrane. According to the preparation method provided by the invention, the fiber adhesive prepared from the composite fiber and the thermoplastic elastomer, the solid electrolyte matrix and the positive electrode material are subjected to ball milling and hot rolling treatment, so that the interface contact between the cathode and the electrolyte is optimized, the interface impedance is reduced, the cyclic stress is relieved, and the generation of interface cracks is inhibited; the prepared solid electrolyte membrane is high in ionic conductivity and stable in structure.

A display device that includes a display element including a light source, and a surface film disposed so as to overlap with the display element and including a thermoplastic elastomer composition, the thermoplastic elastomer composition satisfying conditions (1) and (2) below, and the surface film satisfying conditions (3) and (4) below: (1) The melt flow rate (ASTM D1238, 230° C., 2.16 kg load; MFR) is not less than 30 g / 10 min. (2) The type A hardness (momentary value) measured by a method in accordance with JIS K6253 is 60 to 90. (3) The thickness is not less than 300 μm and not more than 2 mm. (4) The total light transmittance measured by a method in accordance with JIS K7361 is 3 to 60%.

The invention provides self-adhesive modified asphalt, a self-adhesive modified asphalt waterproof coiled material and a preparation method of the self-adhesive modified asphalt waterproof coiled material, and belongs to the technical field of asphalt and waterproof coiled materials. The self-adhesive modified asphalt is prepared from the following components in percentage by weight: 3 to 30 weight percent of matrix asphalt, 20 to 30 weight percent of aromatic hydrocarbon oil, 3 to 5 weight percent of thermoplastic elastomer, 5 to 8 weight percent of rubber modifier, 5 to 10 weight percent of tackifying resin, 3 to 8 weight percent of dioctyl sodium sulfosuccinate, 1 to 3 weight percent of polyaluminum ferric chloride, 1 to 3 weight percent of ferroferric oxide and 0.5 to 1 weight percent of limestone powder, and 10 to 30 wt% of an inorganic filler.

The invention relates to a preparation, regulation and control method of a thermoplastic elastomer encapsulating material in the technical field of new materials, which comprises the following steps: realizing an in-situ reaction process by controlling the concentration and reaction temperature of reactive functional groups in the encapsulating material according to an interface reaction rate constant and active group distribution density; if the reaction conversion rate reaches a preset value, a chemically bonded interface bonding layer is formed; monitoring the stress distribution state in the rubber coating layer by adopting a stress analysis algorithm, and when detecting that local stress concentration exceeds the yield strength of the material, dispersing a stress concentration area by adjusting the length of a flexible chain segment and the density of a rigid cross-linking point in a cross-linking network; and deformation data and a bonding strength change trend of the interface bonding layer in the temperature cycling process are obtained, if the bonding strength attenuation rate exceeds a preset threshold value, a dynamic cross-linking mechanism is activated, and the dynamic equilibrium state of interface bonding is maintained through fracture and recombination of a reversible covalent bond.

The invention discloses a surface protective film and a preparation method thereof, and belongs to the technical field of protective films. The surface protection film comprises a surface layer, a core layer and a bonding layer which are arranged in sequence, the surface layer comprises first polypropylene matrix resin, an organic ultraviolet absorbent and an inorganic ultraviolet screening agent; the core layer comprises second polypropylene matrix resin, polyaryletherketone nanofibers and flaky mica powder of which the surface is coated with cerium oxide; the bonding layer comprises a thermoplastic SEBS elastomer, hydrogenated bonding resin, an organic zinc compound, an ultraviolet light stabilizer and a plasticizer containing an epoxy group. The surface protection film has excellent ultraviolet aging resistance and high temperature resistance, the adhesive force can still be kept within a certain range under the conditions of ultraviolet radiation and high temperature, the surface protection film can be easily unwound under the condition of high temperature, and no residual adhesive is separated out.

The invention relates to the technical field of conductive materials, and discloses a flexible conductive composite material and a preparation method and application thereof. The flexible conductive composite material comprises the following preparation raw materials: a thermoplastic elastomer, a conductive filler, cellulose nanocrystals, an inorganic salt, an organic solvent and water. According to the flexible conductive composite material provided by the invention, the Pickering emulsion is co-stabilized by the cellulose nanocrystal auxiliary conductive filler, the cellulose nanocrystal raw material is easy to obtain, biodegradable, environment-friendly and pollution-free, the Pickering emulsion is good in stability, the conductive filler is directionally enriched on an emulsion interface to form a continuous path, the bottleneck of filler dispersion is broken through, a conductive network structure is complete, and the stability of the Pickering emulsion is improved. The strain sensing response is sensitive, reversible circulation is achieved, the conductive interval is wide, the conductive seepage threshold value is about 1 wt%-2 wt%, when the addition amount of the conductive filler is 10 wt%, the conductivity is about 25 S / cm, and the conductivity is improved in a breakthrough mode.

Disclosed is a vehicle outer waist belt for use in motor vehicles. The system includes an outer glass sealing element that seals between the inner environment of the vehicle and the outer environment of the vehicle, at least one reservoir on the outer glass sealing element, a camera that provides instantaneous display of the traffic status behind the vehicle in the reservoir, a side signal light compartment made of transparent thermoplastic elastomer (TPE) material that provides the return signal of the vehicle in the reservoir, an upper cover closed on the reservoir and sealing the camera, a conductive polymer with high electrical conductivity that provides the electrical connection of the camera and the side signal light compartment, and a display that allows the driver to see the instantaneous images transferred from the camera inside the vehicle.

The invention discloses a preparation method of a high-elastic damping foaming material, which comprises the following steps: S1, melting and blending raw materials comprising a basic elastomer, a hydrogenated styrene thermoplastic elastomer, brominated butyl rubber, a foaming agent and a cross-linking agent to form a homogeneous precursor composition; s2, synchronously carrying out chemical foaming and cross-linking reaction on the precursor composition to form a foaming material with a continuous network foam structure; wherein the basic elastomer comprises at least one of an ethylene-vinyl acetate copolymer and a polyolefin elastomer; moreover, in parts by weight, the dosage of the basic elastomer is 50-70 parts, the dosage of the hydrogenated styrene thermoplastic elastomer is 15-35 parts, and the dosage of the brominated butyl rubber is 10-25 parts. By adopting the technical scheme, the foaming material with high resilience, high damping performance and excellent durability can be prepared.

The invention belongs to the technical field of cables, and particularly relates to a weather-proof new energy automobile charging cable which is composed of a cable core, a shielding layer wrapping the cable core and a sheath layer wrapping the shielding layer. Each cable core is composed of a conductor and an insulating layer. The invention discloses a preparation method of a traditional Chinese medicine. A sheath layer of the weather-resistant new energy automobile charging cable is prepared from 70 to 90 parts of thermoplastic elastomer (TPE), 20 to 30 parts of lignin, 25 to 30 parts of propylene oxide, 20 to 25 parts of furfuryl alcohol, 2 to 5 parts of 4-chloromethyl styrene, 1.5 to 3 parts of tetrabutyl ammonium hydroxide, 5 to 6 parts of methylbenzene, 10 to 25 parts of methyl tert-butyl ether, 45 to 7 parts of anhydrous MgSO4, 0.5 to 2.5 parts of initiator, 2 to 3 parts of cross-linking agent, 5 to 8 parts of metal salt additive and 1 to 3 parts of lubricant. 0.3 to 0.6 part of antioxidant and 3 to 4 parts of color master batch.

The invention relates to the technical field of rail transit rubber materials, and particularly discloses a rubber isolation layer material for a ballastless track and a preparation method, the rubber isolation layer material comprises the following components by weight: 60-70 parts of ethylene propylene diene monomer, 20-30 parts of polystyrene, 30-40 parts of nitrile rubber / polylactic acid thermoplastic elastomer, 20-30 parts of porous polymer microspheres, and 15-20 parts of maleic anhydride grafted graphene oxide. The material is prepared from 10-15 parts of organic montmorillonite, 3-4 parts of a vulcanization activator, 3-4 parts of an anti-aging agent, 3-4 parts of a vulcanization accelerator, 1-3 parts of a vulcanizing agent, 4-6 parts of a dispersing agent and 3-6 parts of a foaming agent. By adding various creatively combined reinforcing fillers into the ethylene propylene diene monomer, the mechanical properties such as hardness, tensile strength, static rigidity and the like and the insulation and shock absorption properties of the isolating layer are greatly improved, and meanwhile, carbon black does not need to be added, so that the problems that the resistance of a product is reduced and the insulation property becomes poor after the carbon black is added are avoided.

The invention relates to a wet-skid-resistant composite thermoplastic elastomer as well as a preparation method and application thereof, and belongs to the technical field of thermoplastic elastomers. The wet-skid-resistant composite thermoplastic elastomer is prepared from the following components in parts by weight: 5 to 25 parts of butyl rubber, 1 to 10 parts of liquid nitrile rubber, 1 to 10 parts of surface modified needle-shaped wollastonite, 0.2 to 1.5 parts of vulcanizing agent, 0.1 to 0.5 part of vulcanizing aid, 70 to 95 parts of thermoplastic polyurethane elastomer particles and 1 to 5 parts of compatilizer. The preparation method is simple, VOCs emission is avoided, leftover materials can be recycled, the prepared sports shoe outsole has the advantages of being excellent in wear resistance, rebound resilience, slip resistance and particularly wet-slip resistance, slipping of athletes in the sports process is effectively prevented, particularly in a humid or rainy environment, more reliable safety guarantee is provided for the athletes, and the sports shoe outsole is suitable for being used in sports. The market application value is high.

The invention discloses an elastic composite shielding cable for a ship and a preparation process thereof, and aims to solve the problems of poor environmental adaptability, low shielding effectiveness, insufficient elasticity and unstable process of an existing ship cable. The cable sequentially comprises a conductor layer, an insulating layer, a composite shielding layer and a sheath layer from inside to outside, wherein the conductor layer is formed by twisting a plurality of strands of superfine tinned oxygen-free annealed copper wires, and two 1500D aromatic polyamide fiber elastic cores are arranged in the center of the conductor layer; the insulating layer is made of ethylene propylene rubber or thermoplastic elastomer, and the dielectric constant is not more than 3.0; the composite shielding layer is of a double-layer structure of aluminum-plastic composite tape wrapping and tinned copper wire weaving, and the shielding effectiveness of the X wave band is larger than or equal to 30 dB. The sheath layer is of a chloroprene rubber or polyurethane double-layer structure, tests such as C5-M-grade salt mist are carried out, the preparation process comprises the steps of conductor twisting, insulation extrusion, composite shielding forming and the like, various parameters are accurately controlled, the bending radius of the cable is smaller than or equal to 6D, and the cable is stable in performance after being repeatedly bent for 1000 times, low in smoke, halogen-free, flame-retardant, adaptive to severe environments of ships, stable in process and high in reliability. And reliable operation of ship equipment can be ensured.

The invention provides a thermal insulation composite yarn based on aerogel and a preparation method thereof, and relates to the field of textile fiber manufacturing. The aerogel-based heat-preservation composite yarn comprises a core layer, which is composed of aerogel composite fibers containing silicon dioxide aerogel and a first polymer; the middle layer is coated outside the core layer and is formed by thermoplastic elastomer filaments without aerogel; and the outer layer is coated outside the middle layer and consists of second polymer filaments which do not contain aerogel. According to the aerogel-based heat preservation composite yarn, the heat insulation performance, the mechanical performance and the wear resistance are comprehensively improved.

A composite board, including a core, and a capstock positioned to at least partially cover the core, where the capstock includes 10 wt. % to 70 wt. % of polyvinyl chloride (PVC), based on a total weight of the capstock, 1 wt. % to 60 wt. % of acrylonitrile-styrene-acrylate (ASA), based on the total weight of the capstock, 1 wt. % to 60 wt. % of styrene-acrylonitrile (SAN), based on the total weight of the capstock, and 1 wt. % to 60 wt. % of a thermoplastic elastomer, where the thermoplastic elastomer includes styrene-isobutylene-styrene (SIBS), a thermoplastic copolyester elastomer, a polymeric plasticizer, and combinations thereof, wherein the capstock does not include thermoplastic polyurethane.

The invention discloses an anti-skid, wear-resistant, light and elastic super-olefin polymer rubber and plastic material and a preparation method of the anti-skid, wear-resistant, light and elastic super-olefin polymer rubber and plastic material. The wear-resistant non-slip material is prepared from the following components in parts by weight: 40 to 60 parts of non-slip master batch, 8 to 12 parts of thermoplastic elastomer, 12 to 18 parts of ethylene-vinyl acetate copolymer, 12 to 18 parts of ethylene-vinyl acetate copolymer resin, 3 to 5 parts of wear-resistant agent, 0.2 to 0.6 part of stearic acid, 0.5 to 0.8 part of cross-linking agent and 2 to 5 parts of zinc oxide. The anti-skid, wear-resistant, light and elastic super olefin polymer rubber and plastic material is prepared from the components. The material prepared by the invention has the characteristic of light weight, has good elastic property and non-slip property, is good in anti-slip effect, has no peculiar smell and is stable in overall performance.

The invention discloses a preparation method and application of a modified glass fiber reinforced polypropylene composite material, and belongs to the field of high polymer materials. The modified glass fiber reinforced polypropylene composite material comprises the following raw materials in parts by weight: 33-76 parts of polypropylene resin; 20 to 50 parts of modified glass fiber; 2 to 8 parts of POE resin; 2-5 parts of a styrene thermoplastic elastomer maleic anhydride graft; the preparation method of the modified glass fiber comprises the following steps: dissolving a coupling agent containing double bonds in a solvent, adding glass fiber, taking out and drying to obtain glass fiber with double-bond functional groups on the surface; and adding the glass fiber containing the double-bond functional group on the surface, maleic anhydride, ethoxyamide wax and an initiator into a reaction kettle for grafting reaction, taking out after the reaction is finished, and drying to obtain the surface-coated modified glass fiber.

The invention discloses a low-noise and low-rolling-resistance tire tread and a preparation method thereof, and relates to the technical field of tire production, the low-noise and low-rolling-resistance tire tread comprises a supporting layer and multiphase composite tread rubber; the multiphase composite tread rubber comprises a continuous phase matrix, white carbon black with a two-phase structure, functionalized multiwalled carbon nanotubes, a disilane coupling agent, dynamic crosslinking thermoplastic elastomer particles, zinc oxide, stearic acid, an anti-aging agent, an accelerant and sulfur, and good wear resistance and mechanical strength are kept while the rolling resistance and driving noise of a tire are remarkably reduced.

The invention provides a porous conductive fiber, an intelligent fabric and a preparation method thereof, and belongs to the technical field of intelligent fabrics. The preparation method of the porous conductive fiber comprises the following steps: preparing a spinning solution from a conductive material, a thermoplastic elastomer and a template agent, and preparing the porous conductive fiber by combining a spinning method and a sacrifice template method; the conductive material is selected from at least one of a graphene material, an MXene material, a carbon nanotube material and a metal organic framework material; the template agent is selected from at least one of sodium chloride, cube sugar, starch, Janus particles, colloidal silica oxide, cellulose and polymethyl methacrylate. The porous conductive fibers and the hydrophobic elastic porous fibers are woven and integrated into the intelligent fabric. The porous conductive fiber prepared by the invention has relatively high strength, a wide stretching range and relatively high toughness; the intelligent fabric has good self-powered sensing performance, air permeability, washing resistance, cycle durability and one-way wet permeability, and can be worn by a human body and used for detecting human motion.

A composite board, including a core, and a capstock positioned to at least partially cover the core, where the capstock includes 10 wt. % to 70 wt. % of polyvinyl chloride (PVC), based on a total weight of the capstock, 1 wt. % to 60 wt. % of acrylonitrile-styrene-acrylate (ASA), based on the total weight of the capstock, 1 wt. % to 60 wt. % of styrene-acrylonitrile (SAN), based on the total weight of the capstock, and 1 wt. % to 60 wt. % of a thermoplastic elastomer, where the thermoplastic elastomer includes styrene-isobutylene-styrene (SIBS), a thermoplastic copolyester elastomer, a polymeric plasticizer, and combinations thereof, wherein the capstock does not include thermoplastic polyurethane.

The invention relates to the technical field of polymer composite materials, in particular to a TPE-PP composite material for a folding joint of a pet trolley and a preparation method of the TPE-PP composite material. The problems that an existing joint material is insufficient in fatigue resistance and limited in environmental adaptability are solved. The composite material adopts a three-layer structure: a base layer takes high-crystallinity polypropylene as a matrix, and glass fiber reinforcement and elastomer toughening are assisted, so that high rigidity and high strength are realized; the functional layer is composed of a fatigue-resistant thermoplastic elastomer composite system and contains strengthening components such as nano SiO2 so as to disperse stress and prevent crack propagation; the surface layer is a functional layer and contains polytetrafluoroethylene micro powder to provide self-lubricating property, a silver-loaded zinc zeolite antibacterial agent to endow antibacterial and mildew-proof properties, and an anti-ultraviolet additive to improve weather resistance. The three layers form an interpenetrating network structure through co-extrusion and are crosslinked through electron beam irradiation, so that the interlayer binding force is improved. The material can remarkably prolong the service life of the folding joint of the pet trolley and improve the use safety and environmental adaptability.

The invention provides ammonolysis modified diester oil for TPE (thermoplastic elastomer) and a preparation method of the ammonolysis modified diester oil. The ammonolysis modified diester oil comprises the following components in parts by weight: 100-120 parts of modified disubstituted diester oil; 20 to 50 parts of an ammonolysis agent; 0.1 to 0.3 part of a catalyst; wherein the modified disubstituted diester oil is obtained by carrying out ester exchange reaction on diester oil and aromatic alcohol. The modified disubstituted diester oil is obtained through ester exchange reaction of diester oil and aromatic alcohol, and two non-polar benzene ring structures are introduced into a molecular chain of the modified disubstituted diester oil, so that the compatibility of the modified disubstituted diester oil and SBS / SEBS is effectively improved, and the modified diester oil can be directly used for producing and processing TPE materials. An ammonolysis agent is added for ammonolysis reaction, so that the modified diester oil obtains amido bonds with high light and heat stability and hydrolysis resistance, and the aging resistance of the TPE material applying the diester oil can be effectively improved.