2308 results about "Thermoplastic elastomer" patented technology

The invention discloses a halogen-free flame-retardant TPU (thermoplastic polyurethane) material suitable for a charging pile cable and a preparation method of the halogen-free flame-retardant TPU material, belongs to the technical field of TPU material processing, and aims to solve the technical problem that the flame retardance and wear resistance of a TPU material for a cable in the prior art need to be further improved. The material comprises the following raw material components in parts by weight: 80-100 parts of a cross-linked thermoplastic elastomer, 10-20 parts of a modified filler, 10-20 parts of a flame-retardant chain extender, 3-5 parts of a stabilizer, 3-5 parts of an antioxidant, 3-5 parts of an ultraviolet light absorber and 3-5 parts of a lubricant, after the modified thermoplastic elastomer is prepared, the modified thermoplastic elastomer is activated and cross-linked with the flame-retardant cross-linking agent, a silane structure is introduced into the structure, the flame-retardant cross-linking agent and the modified filler enhance the flame-retardant capability of the material through a synergistic effect, and meanwhile, the compatibility of the material and an inorganic material is enhanced by hybridizing a polyurethane chain segment; the wear resistance, flame retardance and other properties of the material are improved.

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 a high-strength cable for an industrial robot and a preparation process of the high-strength cable. The preparation process comprises the following steps: selecting a high-strength conductor material, performing multi-pass wire drawing processing on the conductor material, and twisting a plurality of fine copper wires according to a preset pitch and direction to form a conductor core; fluoroplastic is selected as a first layer of insulating material to coat the conductor core to form a first insulating layer, and modified thermoplastic elastomer particles coat the first insulating layer to form a second insulating layer; wrapping a wrapping material outside the second insulating layer by using a wrapping machine to form a wrapping layer; a sheath material extruder is provided to wrap the wrapping layer to form an outer sheath, and then cutting is carried out to obtain the high-strength cable. According to the process, material selection and structural design are innovatively combined, the double-layer insulation structure provides excellent high-temperature resistance and electrical insulation performance, friction between the inner layer and the outer sheath is effectively reduced due to application of the wrapping layer, the service life of the cable is prolonged, and therefore the high-strength cable is prepared.

The invention provides a high-strength, light and supercritical foaming fabric and a preparation method thereof, complete fibers used by the fabric comprise core layer fibers and a skin layer material, the outer side of the core layer fibers is uniformly coated with the skin layer material, and the skin layer material can be foamed; the core layer fiber is at least one of aramid fiber, polyarylate fiber, polyimide fiber, ultra-high molecular weight polyethylene fiber, polyester fiber and polyamide fiber; and the skin layer is made of thermoplastic elastomer resin. The preparation method comprises the following steps: uniformly coating the outer side of the core layer fiber with the skin layer material, and then carrying out supercritical foaming on the skin layer material. According to the invention, the contradictory technical requirements of the fabric for shoes on strength, light weight, comfort and the like are solved in a simple mode; the body strength of the fiber for the shoes can be kept, and the characteristics of light weight and air permeability of the foaming fabric are also achieved; the difficulty of direct foaming of the fabric / fiber for shoes is reduced, and the vamp fabric and the shoe article which are uniform in foaming, breathable, light in weight, high in strength and soft can be obtained.

A method of manufacturing a foam component includes generating, via a computer aided design (CAD) software, three-dimensional data corresponding to the foam component. The method further includes scaling, using the CAD software, the three-dimensional data to correspond to a preform. The preform is smaller than the foam component based on a scaling factor. The method further includes fabricating the preform from a thermoplastic elastomer and adding a foaming agent to the preform. The method further includes foaming the preform by exposing the preform to a target temperature for a target time via a heat generating device.

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.

The invention discloses a thermoplastic elastomer POE open-cell foam material and a preparation method thereof. The thermoplastic elastomer POE open-cell foam material comprises the following components in percentage by mass: 60.0%-90.0% of a thermoplastic elastomer POE base material, 5.0%-20.0% of a second component, 3.0%-10.0% of a fiber functional filler, 1.5%-3.0% of a compatilizer, 0.2%-2.0% of a cross-linking agent, 0.2%-2.0% of a foam stabilizer and 0.1%-3.0% of a composite foaming agent. The composite foaming material is prepared by adopting continuous extrusion physical foaming, wherein the composite foaming agent is injected in stages in the extrusion process to realize controllable foaming. The obtained foam is high-performance foam with the aperture ratio being greater than or equal to 93%, the foaming ratio being 20-25 times, the uniform foam hole size being 150-200 microns, the adsorption performance being greater than or equal to 30 g / g, the compression rebound rate being greater than or equal to 93% and the shrinkage rate being smaller than or equal to 3%, and the application range of the POE foam material in the field of environmental protection is widened.

The invention discloses a rare earth hybrid flame retardant as well as a preparation method and application thereof, and belongs to the technical fields of inorganic synthesis, flame retardants and high polymer materials. Rare earth hydroxide is successfully loaded on the surface of a flame retardant through an in-situ deposition method to prepare a rare earth hybrid flame retardant, and the rare earth hybrid flame retardant is further dispersed in a high polymer material matrix through melt blending to prepare the flame-retardant high polymer composite material. The hybrid flame retardant prepared by a deposition method can significantly improve the dispersion compatibility of the flame retardant in a high polymer material, and effectively alleviates the mechanical property degradation caused by the filling of the traditional flame retardant; based on the gas phase-condensation phase synergistic effect of the rare earth hydroxide and the flame retardant, the flame retardance and smoke suppression performance of the high polymer material can be synchronously improved. The rare earth hybrid flame retardant can be applied to various high polymer materials such as polyolefin cables, thermoplastic elastomers, polyurethane and the like, can synchronously improve flame retardance, smoke suppression, mechanical performance and comprehensive performance, and has a wide application prospect.

The invention belongs to the technical field of high polymer materials, and particularly discloses a cross-linked antistatic supercritical microcellular foaming material. Comprising the following raw materials in parts by weight: 80-100 parts of HIPS, 10-15 parts of thermoplastic elastomer, 5-10 parts of low-density polyethylene, 10-15 parts of organic multifunctional master batch, 5-10 parts of high-dispersion conductive functional filler, 5-10 parts of modified calcium sulfate whisker, 5-10 parts of grafted modified talcum powder master batch, 1-5 parts of cross-linking agent, 1-5 parts of lubricant and 1-5 parts of antioxidant. The invention provides a cross-linked antistatic supercritical microcellular foaming material as well as a preparation method and application thereof. The cross-linked antistatic HIPS supercritical microcellular foaming material which is excellent in comprehensive performance and can be applied to multiple fields is prepared.

The invention relates to the field of thermoplastic elastomer materials, in particular to a TPEE synthetic brush wire and a preparation method thereof.The TPEE synthetic brush wire is prepared from, by weight, 55-75 parts of TPEE resin, 25-45 parts of polyester resin, 5-10 parts of compatilizer, 8-16 parts of modified polysiloxane, 12-24 parts of plasticizer, 1-3 parts of lubricant, 0.3-1 part of antioxidant and 0.6-1.2 parts of stabilizer. The TPEE resin and the polyester resin are used as main raw materials, the compatilizer, the modified polysiloxane and the plasticizer are added as auxiliary raw materials, and the lubricant, the antioxidant and the stabilizer are added as additives, so that the prepared brush wire not only has the advantages of proper hardness and rigidity and high strength, but also has better antibacterial performance.

The invention relates to the technical field of plastic material forming and processing, in particular to an internal mixer for producing thermoplastic elastomers, which comprises a main body, a processing part, a movable weight part, a feeding module, a linkage part, an auxiliary discharging part, a control host and a conveying part, the main body comprises a supporting seat, and the upper side of the supporting seat is fixedly connected with a box shell; an internal mixing chamber is formed in the inner side of the box shell, the upper side of the internal mixing chamber communicates with a through opening, rail frames are fixedly connected to the front side and the rear side of the lower end face of the box shell correspondingly, rail blocks are slidably connected to the inner sides of the rail frames correspondingly, and a discharging plate located on the inner side of a discharging opening of the box shell is fixedly connected to the upper sides of one set of rail blocks. Through the main body, the movable ram part, the feeding module, the linkage part and other structures, when the internal mixer is used for producing thermoplastic elastomers, various raw materials can be quickly and efficiently added at regular time under the condition that the ram is not completely lifted up through limited separation design of the ram, and the raw materials in the internal mixing chamber are prevented from being splashed out during feeding.

The invention provides an ultralight high-resilience cushioning transparent EVA composite chemical foaming material. The ultralight high-resilience cushioning transparent EVA composite chemical foaming material is prepared from the following raw materials in parts by mass: 30-60 parts of high-transparency modified TPX, 30-50 parts of an ethylene-vinyl acetate copolymer, 7-25 parts of a thermoplastic elastomer TPE, 5-16 parts of an olefin block copolymer, 5-10 parts of a wear-resistant agent, 0.2-0.5 part of stearic acid, 0.2-1 part of zinc stearate, 0.3-1.5 parts of an odorless bridging agent and 3.5-8 parts of a transparent foaming agent, the high-transparency modified TPX is prepared from high-transparency TPX, EVOH, ethylene propylene diene monomer and stearic acid. The EVA composite chemical foaming material provided by the invention has the advantages of ultralight weight, low shock absorption, high resilience, high transparency and high energy feedback, keeps the wearing comfort of shoes, protects a consumer from fatigue, pain and even injury caused by the material shock absorption problem in the exercise process, is high in cost performance, and meets the comprehensive requirements of the consumer.

The invention relates to the field of automobile part manufacturing, and particularly discloses a barrier layer direct bonding type TPE material for an automobile air conditioner pipeline system and a preparation method and application of the barrier layer direct bonding type TPE material. The TPE material is prepared from the following raw materials: a thermoplastic elastomer TPE, PA, EVOH, polyether block amide, a glycidyl methacrylate grafted olefin copolymer elastomer, a toughening compatilizer, composite modified montmorillonite, a cold-resistant additive, an antioxidant and paraffin oil. Wherein the composite silane coupling agent, lauric acid and N, N '-carbonyldiimidazole are adopted to modify the nano-montmorillonite, so that the dispersity of nano-montmorillonite particles is improved, the formation of aggregates is effectively reduced, and the mechanical property of the material is enhanced; the polyether block amide, the glycidyl methacrylate grafted olefin copolymer elastomer and the toughening compatilizer have a synergistic effect, so that good adhesiveness of the TPE material and the barrier layer is realized.

The invention relates to the technical field of flour waterproof packaging bags, in particular to a wear-resistant waterproof packaging bag for flour processing and production. An outer layer material of the packaging bag comprises the following raw materials in parts by mass: 75-85 parts of polyamide, 15-25 parts of a thermoplastic elastomer, 2-5 parts of nano calcium carbonate, 0.2-0.25 part of an antioxidant, 1-3 parts of a nucleating agent and 5-10 parts of a citrate plasticizer; the middle layer material of the packaging bag comprises the following raw materials in parts by mass: 55-65 parts of a polyamide monomer, 35-45 parts of a polyether monomer and 0.5-1.5 parts of a catalyst; the inner layer of the packaging bag is made of 100 parts of food-grade low-density polyethylene. According to the flour packaging bag, by optimizing the material formula and the preparation technology, balance of flexibility and rigidity is achieved, abrasion resistance and water resistance are remarkably enhanced, aging resistance stability is improved, accurate technology guarantee performance is achieved, efficient bonding and antistatic design are achieved, flour quality and transportation safety are guaranteed, and potential risks are reduced.

The invention relates to the field of thermoplastic elastomers, and particularly discloses a low-hardness high-temperature-resistant thermoplastic elastomer and a preparation method thereof. The low-hardness high-temperature-resistant thermoplastic elastomer is prepared from the following raw materials in parts by weight: 90 to 100 parts of modified styrene-ethylene-butylene-styrene block copolymer, 50 to 250 parts of white oil, 10 to 100 parts of polypropylene and 5 to 10 parts of antioxidant, and hydrogen bonds formed by ureido groups are introduced into the modified styrene-ethylene-butylene-styrene block copolymer; the preparation method comprises the following steps: uniformly mixing the styrene-ethylene-butylene-styrene block copolymer and the white oil at a high speed to prepare oil-filled SBES for later use; and pre-mixing the prepared oil-filled SBES, an antioxidant and polypropylene, and carrying out melt blending and extrusion granulation at 200-220 DEG C. The preparation method comprises the following steps: pre-mixing the oil-filled SBES, the antioxidant and the polypropylene; the composition can be used for product sealing, and has the advantages of high temperature resistance and low hardness.

The invention belongs to the technical field of thermoplastic elastomer-based electromagnetic shielding foaming materials, and provides a thermoplastic elastomer-based foaming composite material with excellent conductivity and electromagnetic shielding performance and a preparation method of the thermoplastic elastomer-based foaming composite material. The foaming composite material is prepared by fully mixing the following components in parts by weight through an extruder, extruding, foaming and molding: 100 parts of thermoplastic elastomer resin, 0.8-8 parts of conductive functional filler, 0.1-10 parts of a coupling agent, 0.1-10 parts of a photoinitiator, 0.1-10 parts of a foam stabilizer and 0.2-8 parts of a composite foaming agent. The thermoplastic elastomer-based foaming composite material has excellent conductivity and electromagnetic shielding performance, also has good mechanical properties, is highly continuous and stable in production process, is safe and free of environmental pollution, and is suitable for industrial large-scale production.

The invention belongs to the technical field of protection. The invention provides a D3O-based protective layer structure and a preparation method thereof. The D3O-based protective layer structure comprises an inner layer, an inner tube bundle layer and an outer layer which are sequentially arranged in parallel from bottom to top, the inner layer comprises a polyester fabric and an organic silicon resin based nano titanium boride and titanium carbide composite coating coated on the polyester fabric; the internal honeycomb-shaped tube bundle layer comprises a honeycomb-shaped frame body formed by a thermoplastic elastomer and a filler filled in the frame body, and the filler is a D30 material; and the outer layer is a butyl rubber layer. The single protective property of a traditional protective layer is changed, the performance of multiple composite materials is combined, the protective layer with multiple functions of wear resistance, softness, hardness, elasticity and the like is formed, and the protective layer has the performance of dispersing impact force, absorbing and buffering impact kinetic energy and preventing friction and can be applied to preparation of facilities or protective tools directly facing human body protection and the like.

The invention discloses a preparation method and application of circumferentially limited supercritical foaming self-packaging TENG, and the preparation method comprises the following steps: uniformly mixing a PDMS precursor and a curing agent, pouring the mixture into a mold, and putting the mold into a vacuum oven for curing to obtain a PDMS film; adhering the PDMS film to the middle position of the PI film through a double-sided nickel conductive adhesive tape, then putting the PDMS film into a mold, putting a thermoplastic elastomer on the upper layer, and performing hot pressing by using a vacuum auxiliary hot press to obtain a prefabricated sample; putting the prefabricated sample into a supercritical foaming reaction kettle, controlling the temperature to 70-130 DEG C, injecting supercritical fluid into the foaming reaction kettle, after the prefabricated sample and the supercritical fluid form a saturated and stable blending system, maintaining for 0.8-1.5 hours, taking out the blended system, and naturally cooling to room temperature, so as to obtain the TENG. The preparation method has the beneficial effects that the self-assembled and self-packaged TENG with the bionic dome structure is successfully prepared through cooperation of a supercritical fluid technology and a limited foaming strategy, and the technical scheme of the self-assembled and self-packaged TENG obtains breakthrough progress in the aspects of the preparation process, the structural design and the environmental adaptability.

The invention discloses a low-odor soft TPE (thermoplastic elastomer) composite material and a preparation method thereof, and the composite material comprises the following components in parts by weight: 50-100 parts of TPE, 5-20 parts of a deodorant, 150-600 parts of a plasticizer, 1-10 parts of an antioxidant, 1-5 parts of a light stabilizer, 0-20 parts of calcium stearate, 2-10 parts of nano silicon dioxide, 1-5 parts of an organic silicon modifier and 50-150 parts of a bio-based plasticizer. 1-5 parts of nano titanium dioxide, 0.1-1 part of graphene nanosheets and 1-5 parts of a metal organic framework compound; 0.01-0.5 part of carbon nanotubes, 0.5-2 parts of a self-repairing polymer containing microcapsules, and 1-10 parts of an antibacterial agent. By adding the novel deodorant, peculiar smell molecules generated in the hot melting process are effectively captured, adsorbed and degraded, the smell of the product is remarkably reduced, and more comfortable user experience is provided.

The invention provides a non-cured asphalt-based waterproof coating and a preparation method thereof. Wherein the non-cured asphalt-based waterproof coating comprises the following raw material components in parts by weight: 45-70 parts of asphalt; 10 to 20 parts of a compatilizer; 3-10 parts of a thermoplastic elastomer; 3-5 parts of styrene butadiene rubber; 3-5 parts of resin; 2-5 parts of wax powder; 5 to 20 parts of modified graphene oxide; 12-25 parts of an inorganic filler; 0.2 to 0.8 part of a dispersant; wherein the modified graphene oxide is alkylamine modified graphene oxide. According to the non-cured asphalt-based waterproof coating provided by the invention, alkylamine modified graphene oxide is introduced into the waterproof coating, has better compatibility with other components, and forms more heat conduction routes in the non-cured asphalt-based waterproof coating, so that the heat conductivity coefficient of the waterproof coating is effectively improved, and the heating time and heating temperature of coating construction are reduced; no smoke is generated during construction, the environmental protection property is high, and fire of the non-curing coating caused by high-temperature heating can be effectively reduced.

The invention discloses a photocuring 3D (three-dimensional) printing thermoplastic elastomer material and a printing method, specifically, a styrene-butadiene-styrene block copolymer (SBS) and a multi-sulfydryl cross-linking agent are used as matrixes, trimethylbenzene is used as a solvent diluent to adjust the viscosity of a system, and a photoinitiator, a light absorber and a dye are used as assistants to prepare the photocuring 3D printing thermoplastic elastomer material. A thermoplastic elastomer material suitable for photocuring 3D printing is prepared, elastomer organic gels in different shapes are printed on a photocuring 3D printer, and a volume-shrunk elastomer finished product is obtained after a solvent is removed. The range of the 3D printing photocuring elastomer material is widened, photocuring 3D printing of the thermoplastic elastomer is achieved for the first time, and the thermoplastic elastomer material has important application prospects.

A process for producing foam particles composed of thermoplastic elastomers having polyamide segments, comprising the steps:(a) production of a suspension of pellets of the thermoplastic elastomer in a suspension medium,(b) addition of a blowing agent,(c) impregnation of the pellets with the blowing agent by heating of the suspension in a pressure vessel to an impregnation temperature IMT at an impregnation pressure IMP, depressurization of the suspension by emptying of the pressure vessel via a depressurization device and work-up of the foam particles obtained, and also foam particles obtainable by the process.

The invention discloses a modified ceramic flame-retardant polyphenyl ether insulated wire and cable material which is prepared from the following raw materials in percentage by mass: 15%-20% of polyphenyl ether resin, 10%-20% of SEBS thermoplastic elastomer, 4%-8% of polypropylene resin, 3%-8% of maleic anhydride grafted material, 5%-20% of melamine cyanurate, 5%-15% of aluminum diethylhypophosphite, 1%-4% of 2, 3-dimethyl-2, 3-diphenyl butane, 10%-30% of compound ceramic powder and 1%-4% of antioxidant. The insulated wire and cable material disclosed by the invention has outstanding electrical insulativity, flowability and water resistance, relatively good wear resistance and electrical performance, good dimensional stability and relatively high heat resistance; the flame-retardant property is good, and the self-extinguishing property is realized; and the ceramic forming property after high-temperature combustion is excellent, and the ceramic still has excellent insulating property after being formed.

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.

A system for applying a lifting force to a tissue site of a patient includes an occlusive layer configured to define a substantially air-tight chamber around a tissue site when sealed to a patient, an air displacement device fluidly coupled the chamber and operable to remove air from the chamber, and a sealing strip configured to seal the occlusive layer to the patient. The sealing strip includes a thermoplastic elastomer having properties that provide a non-adhesive tack and substantially airtight sealing between the scaling strip and the patient.

The invention provides a thermoplastic hot melt adhesive for bonding cover plates of household appliances and a preparation method of the thermoplastic hot melt adhesive. The thermoplastic hot melt adhesive for bonding cover plates of household appliances comprises the following components in parts by mass: 40-70 parts of a high-polarity thermoplastic elastomer; 5 to 10 parts of a copolymer containing amorphous alpha-olefin; 10 to 50 parts of tackifying resin with a high softening point; 0.5 to 2 parts of an antioxidant; 0.5 to 2 parts of a light stabilizer; 0.2 to 0.5 part of a silane coupling agent; wherein the high-polarity thermoplastic elastomer is at least one of TPU, EAA, TPEE, ACM and PA. The bonding performance is improved through the high-polarity thermoplastic elastomer; the copolymer containing the amorphous alpha-olefin promotes wetting and permeation on the surface of an adhered object, so that the adhesion is improved, and the toughness of the high-temperature-resistant hot melt adhesive is improved; physical cross-linking curing is carried out through temperature reduction, the curing process is not directly influenced by humidity, and the sealing requirement of sizing equipment for water vapor is reduced.

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 relates to the technical field of high polymer material injection molding, and particularly provides a spraying-free button preparation method based on a double-shot injection molding process, and the spraying-free button preparation method based on the double-shot injection molding process is characterized in that through the double-shot injection molding process of polyketone (POK) and thermoplastic elastomer (TPE), temperature gradient control, mold rotation and micropore interface interlocking technologies are combined; and spraying-free, high-gloss, wear-resistant and environment-friendly button manufacturing is realized. The POK base body is subjected to high-temperature injection molding in the first injection mode, the TPE surface layer is subjected to low-temperature injection molding in the second injection mode, mechanical interlocking is formed through micropore filling, and the bonding capacity can be improved by 30% or above. According to the method, a traditional paint baking procedure is omitted, the comprehensive cost is reduced by 15%-20%, VOC emission tends to zero, and the method is suitable for production of decoration parts such as clothes and bags.

The invention discloses a 3D printing foaming part, a preparation method thereof and application of the 3D printing foaming part in the field of foaming shoe materials, and relates to the technical field of thermoplastic elastomer foaming material processing. According to the preparation method of the 3D printing foaming part, firstly, the foaming wire melt is obtained through a specific extrusion technology, the diameter of the wire melt is controlled in the extrusion process, then the wire melt is controllably stacked under driving of 3D printing equipment, and parameters in the stacking process are adjusted. According to the method for preparing the 3D printing foaming part, a grid structure can be formed through controllable stacking, the plane-shaped part is prepared, the obtained part is moderate in foam hole size, the tensile breaking strength reaches up to 35 N or above, the true density is as low as 0.7 g / cm < 3 > or below, the product is suitable for the field of shoe materials, the extrusion process of the obtained part is stable, the size error is 35 microns or below, and the product has the good application prospect. And the size precision is higher.

The invention relates to the technical field of thermoplastic elastomers, and discloses a bending-resistant data line material and a preparation method thereof. The data line material comprises the following raw materials in parts by weight: 60-80 parts of SEBS, 10-18 parts of a composite flame retardant, 12-18 parts of polypropylene, 10-20 parts of ethylene propylene diene monomer, 4-9 parts of a thermoplastic polyurethane elastomer, 8-15 parts of white oil, 0.8-2 parts of an antioxidant and 1-2 parts of stearic acid. The material is synthesized by adopting SEBS, polypropylene and ethylene propylene diene monomer which are excellent in bending resistance as main raw materials, and various auxiliaries are added, so that the comprehensive performance of a matrix is improved; the thermoplastic polyurethane elastomer is introduced, so that the wear resistance and the mechanical property of the matrix are improved; in the composite flame retardant, organic flame retardance and inorganic flame retardance are combined, so that the flame retardance of a matrix is comprehensively improved.