94 results about "Elastomer composites" patented technology

The invention relates to the technical field of phase change materials, in particular to a polyamide elastomer composite fiber and a preparation method and application thereof. The preparation method of the polyamide elastomer composite fiber provided by the invention comprises the following steps: (1) taking a polyamide elastomer as a shell material and a solid-liquid phase change material as a core material, and carrying out coaxial melt spinning and curing to obtain a composite fiber precursor; and (2) sequentially carrying out surface crosslinking, drafting and heat setting on the composite fiber precursor to obtain the polyamide elastomer composite fiber. The polyamide elastomer composite fiber obtained by the preparation method has relatively high phase change enthalpy, relatively high energy storage density and relatively high tensile property, and can be used in temperature-adjusting textiles.

Disclosed are a thin, stretchable and flexible printed circuit and a manufacturing method therefor. The manufacturing method comprise: attaching an adhesion-reducing carrier film to a first side of a flexible circuit board provided with a circuit layer and two protective films, wherein the adhesion-reducing carrier film has a large first preset adhesive force; and attaching a first elastomer composite film, and then performing an adhesion-reducing operation on the adhesion-reducing carrier film to allow the adhesion-reducing carrier film to have a small second preset adhesive force. The elastomer composite film is formed by two polymer films with different melting points. The invention can increase the product yield in mass production based on the adhesion-reducing carrier film and can wrap a serpentine circuit by means of the elasticity of a composite structure of the polymer films to realize thin and light design and miniaturization.

The invention relates to a high-impact PC-elastomer composite battery shell and a preparation method thereof, and belongs to the technical field of battery shell manufacturing. The shell adopts a three-layer composite structure design and comprises an outer polycarbonate layer of which the end group is grafted with a hindered amine light stabilizer, a middle thermoplastic polyurethane layer containing a double-crosslinking network and an inner glass fiber reinforced polycarbonate layer. Through material modification, uniform distribution and dense combination of all layers of materials are realized, the impact resistance and the weather resistance of the battery shell are remarkably improved, and the excellent bonding property of an interface is ensured.

The application discloses a kind of organic silicon composite functional materials and its wireless monitoring system and method for intelligent application, the interface film includes by outer to inner sequentially stacked anti-fouling and wetting-resistant surface layer, hydrogen bond enhanced dynamic adaptive layer and inorganic filler modulus enhanced protective layer.Anti-fouling and wetting-resistant surface layer is composed of organic silicon elastomer composite material, hydrogen bond enhanced dynamic adaptive layer is introduced by blending in organic silicon matrix into the modified component containing urea group and the like can form hydrogen bond functional group, and inorganic filler modulus enhanced protective layer is introduced by inorganic filler such as barium titanate to improve modulus and compression resistance.The interface film is integrated with pressure sensor module, wireless communication module and host computer system, to form a complete wireless pressure monitoring system, realize real-time transmission of pressure signal, visual display, threshold alarm and data management.The application is suitable for wearable health monitoring, medical care, child companion guardianship and robot touch and the like fields.

The invention relates to the technical field of preparation of flexible pressure sensors, and discloses a hollow projection and honeycomb structure coupled flexible pressure sensor and a preparation method thereof. The flexible pressure sensor is prepared by coating a mixed solution of liquid metal, a conductive material and an elastomer composite material on a mold of the flexible pressure sensor; and curing to prepare the composite material. Wherein the front side of the flexible pressure sensor is of a honeycomb structure with a plurality of circular holes arranged in an array, the back side of the flexible pressure sensor is of a plurality of hollow protrusions arranged in an array, and the honeycomb structure corresponds to the hollow protrusions in a one-to-one mode. And the sensitivity and durability of the flexible pressure sensor are improved.

The utility model belongs to the technical field of fireproof cables, and particularly relates to an elastomer composite fireproof cable for urban fire protection, which comprises a plurality of cable cores spliced into an inner core, the plurality of cable cores are distributed in a circumferential manner and are externally cylindrical, an insulating layer is arranged outside the cable cores, an inner armor layer is wrapped outside the insulating layer, and an outer armor layer is wrapped outside the inner armor layer. The outer part of the inner armor layer is wrapped with an inner buffer sheet; according to the utility model, through arranging the inner buffer sheets and the outer buffer sheets which are distributed circumferentially outside the inner armor layer, the buffer effect when the cable is pressed is realized through the interaction of the buffer grooves, the buffer ribs and the energy absorption grooves, and meanwhile, the buffer ribs which are arranged at intervals provide a moving space for bending of the cable, so that both buffer protection and flexibility are taken into consideration; besides, the inner buffer sheet, the inner armor layer and the outer buffer sheet are spliced in a staggered manner, so that the outer buffer sheet plays a role in limiting the inner buffer sheet, and the outer armor layer, the fireproof shielding layer and the outer surface layer are combined to form a complete and closed cable structure, so that the production convenience is improved, and the structural reliability is ensured.

The application discloses a supercritical fluid foaming light-weight elastomer composite material for protective gear. The composite material is composed of a thermoplastic elastomer matrix, shear hardening microcapsules and a nucleating agent, and is formed by one-step injection molding foaming with supercritical nitrogen as a physical foaming agent. The composite material has a closed-cell microcellular structure, and the shear hardening microcapsules are uniformly distributed in the cell walls. The surface of the composite material has a dense unfoamed skin layer, and the whole presents a uniform matte white appearance. The shear hardening microcapsules are introduced into the cell walls, so that the protective gear is soft and comfortable at low-speed deformation, and is automatically hardened and enhanced to absorb energy at high-speed impact. The density of the composite material is as low as 0.50-0.90 g / cm3, and the composite material is suitable for sports protective gear, rehabilitation protective gear and protective equipment.

The application discloses a kind of conductive elastomer composite material and its preparation method and application;The composite material includes film I and film II located on the surface of film I;The film II has pleated structure;The raw material of the film I includes flexible matrix I and conductive filler I;The raw material of the film II includes flexible matrix II and conductive filler II;The conductive filler I and the conductive filler II are not identical;The mass ratio of the conductive filler II and flexible matrix II is (20-100):100.The flexible strain sensor prepared from the composite material combines double-layer network conductive structure and asymmetric pleated design, realizes the promotion of sensitivity, and has wide linear range and high linearity.

The invention provides a new energy automobile battery pack anti-impact anti-collision flame-retardant device based on a polyurethane urea elastomer composite material, and relates to the technical field of battery pack protection, the new energy automobile battery pack anti-impact anti-collision flame-retardant device comprises an outer box mechanism, and the outer box mechanism comprises a side frame. According to the outer box mechanism, batteries needing to be protected are placed in the two side frames from the side edges, and the top plate and the bottom plate are correspondingly mounted at the tops and the bottoms of the side frames correspondingly; according to the installation of the bottom plate, the problem that the battery is damaged due to vibration can be avoided through the buffering of the silica gel pad in the driving process through the installation of the embedded silica gel pad in the connecting bone, and the battery is limited through the connecting bone and the steel plate frame in the actual use process of the top plate mechanism; and the problem of battery vibration can be further prevented in the actual use process, and meanwhile, the problem of upward spreading when the battery is on fire can be prevented through the fire-fighting bone, so that the safety of the battery in the actual use process is further improved.

Vulcanizable elastomer composite comprising at least 40 phr silica dispersed in natural rubber, wherein, when the vulcanizable elastomer composite is vulcanized, the resulting vulcanizate has a T300 / T100 ratio of at least -0.024s + b, where s represents the amount of silica in the vulcanizable elastomer composite, expressed as parts per hundred weight rubber (phr) and b = 6.3, and the vulcanizable elastomer composite has the following additional properties: a) a tan ΔΔ60 of at most 0.0022 s - c, where c = 0.06; and b) a tensile strength in MPa of at least -0.21s + d, where d = 41; and if applicable c) Elongation at break (%) * tensile strength (MPa) of at least -211s + e, where e = 27543; and / or d) a silica content of at least 55 phr, for example at least 60 phr.

The invention belongs to the technical field of high polymer materials, and particularly relates to an elastomer composite material and application thereof in shoulder cushion rubber of a tire. The elastomer composite material is prepared from 85 to 100 parts of high-end natural rubber, 0 to 15 parts of 1, 4-polybutadiene polymer, 6 to 12 parts of zinc oxide, 2 to 5 parts of stearic acid, 25 to 45 parts of carbon black, 5 to 15 parts of white carbon black, 1.1 to 1.9 parts of silane coupling agent, 3 to 10 parts of aromatic oil, 1.7 to 5.2 parts of anti-aging agent, 0.4 to 1 part of low rolling resistance modifier, 1.3 to 1.9 parts of insoluble sulfur, 0.2 to 1.2 parts of sulfenamide accelerant, 0.3 to 1.5 parts of anti-vulcanization reducing agent and 0.1 to 0.6 part of scorch retarder. The elastomer composite material provided by the invention can transfer and absorb stress concentrated on a tire shoulder part under a dynamic condition, has the performance characteristics of high tear strength and relatively low heat generation, and is suitable for tire shoulder cushion rubber of an aircraft tire.

The invention discloses an anti-bending photovoltaic electrical cable and a preparation method thereof, and belongs to the technical field of electrical cables, and the cable comprises a conductor core, an insulating layer, a flexible middle layer and an outer sheath layer which are sequentially arranged from inside to outside. And the conductor core adopts a heterostructure formed by layering and twisting an inner layer high-ductility metal wire and an outer layer high-tensile strength metal wire in opposite twisting directions. And the flexible middle layer is made of a thermoplastic elastomer with specific hardness. The outer sheath layer is made of a weather-resistant elastomer composite material reinforced by a composite mineral filler, and the composite mineral filler is a mixture of surface-modified flaky talcum powder and chopped glass fibers. The preparation method of the cable comprises the processes of conductor stranding annealing, insulation irradiation crosslinking, co-extrusion of the flexible middle layer and the outer sheath layer and the like. The cable disclosed by the invention is suitable for dynamic bending occasions such as a photovoltaic tracking bracket and the like, and has excellent anti-bending fatigue life and long-term reliability in a severe environment.

ZEOLITH / ELASTOMER COMPOSITE MATERIAL The present invention relates to a composite material comprising a) at least one elastomer, and b) an amount equal to or greater than 30% by weight, relative to the total weight of said composite material, of type 3A zeolite, the cationic sites of which are occupied by the potassium cation, the sodium cation, at least one cation of an alkaline earth metal from group IIA of the periodic table, and the hydronium cation. The invention also relates to the use of said composite material as an adsorbent material, for the manufacture of masterbatches, for packaging, and for the manufacture of double glazing. Fig.: none

The invention relates to the technical field of elastic bushings, in particular to a magneto-rheological elastomer bushing for an automobile suspension and a vehicle suspension system. The magneto-rheological elastomer bushing comprises an inner sleeve and an outer sleeve which are coaxially arranged; the magnetorheological elastomer layer is filled between the inner sleeve and the outer sleeve, and the magnetorheological elastomer layer serves as a main bearing and rigidity adjusting component; the magnet exciting coil is arranged on the inner sleeve or the outer sleeve, and the magnet exciting coil applies a magnetic field to the magnetorheological elastomer layer to adjust the radial rigidity of the magnetorheological elastomer layer; the magneto-rheological elastomer composite material further comprises at least one magnetic conductive reinforcing piece which is arranged in the magneto-rheological elastomer layer in the radial direction, and the magneto-rheological elastomer layer is divided into at least two sub-layers in the radial direction by the magnetic conductive reinforcing piece. The rigidity of the vehicle can be instantly improved to enhance the control stability when high supporting performance is needed, the rigidity can be instantly reduced to optimize the riding comfort when high vibration filtering performance (such as a bumpy road surface) is needed, and dynamic intelligent balance between the two is achieved.

Methods of fabricating reinforced elastomer composites and reinforced elastomer composites formed thereby. A sheet is fabricated of an elastomer with a reinforcing fiber encapsulated therein and a removable backing film attached to and covering an exterior surface of the sheet. The backing film is then dissolved with an aqueous solution to remove the backing film from the exterior surface of the sheet.

The application discloses a polysiloxane-lignin photo-thermal functional elastomer composite material and a preparation method thereof. After lignin is treated, the lignin is dispersed in a solvent, a modifier and a catalyst are added and reacted to obtain a solid product; the polysiloxane is uniformly dispersed in the solvent, diisocyanate, a chain extender and the modifier are sequentially added and reacted under inert protection atmosphere, a crosslinking agent and the solid product are added to obtain an uncured product, the uncured product is naturally cooled to room temperature after being reacted by heating, a crosslinking product is obtained, the crosslinking product is loaded into a mold and is promoted to crosslink by hot pressing, and the target elastomer is obtained by demolding. The technical scheme of the application reacts amino-terminated polysiloxane with isophorone diisocyanate to obtain a polysiloxane long chain, introduces hydrogen bonds into the material as sacrificial bonds to enhance the mechanical properties; then, a dynamic crosslinking network is formed in the material by using a dynamic silicon ether bond, and the modified lignin added into the material further enhances the mechanical properties of the elastomer and endows the elastomer with excellent photo-thermal conversion function.

This invention relates to the field of road construction materials technology, and in particular to an elastomeric composite modified asphalt for long-life pavement functional layers and its preparation method. The modified asphalt, by weight, comprises: 100 parts of base asphalt, 5-15 parts of waste polyurethane foam powder, and 4-10 parts of waste vegetable oil regenerator, with a weight ratio of (0.5:1) to (1:1). The preparation method includes: heating the waste vegetable oil regenerator, adding the waste polyurethane foam powder for pre-swelling activation to obtain a pre-swelled composite; heating the base asphalt, adding the pre-swelled composite under high-speed shearing for compounding; and finally, after development and stabilization, obtaining the product. This invention utilizes waste vegetable oil to activate and compatibilize waste polyurethane foam, resulting in excellent high-temperature rutting resistance, good low-temperature crack resistance, outstanding elastic recovery performance, and improved storage stability and durability. It also achieves high-value utilization of waste, combining environmental protection and economic benefits.

The invention relates to the technical field of advanced petrochemical and chemical new materials, in particular to an elastomer composite conductive material and a preparation method and application thereof.The preparation method comprises the steps that graphene, 1, 3, 5-benzenetricarboxaldehyde and 1, 4-phenylenediamine are dissolved in a solvent, a catalyst is added, and a black solution is obtained through ultrasonic dispersion; placing the black solution in a microwave reaction tube, and carrying out microwave synthesis to obtain a solid; sequentially carrying out detergent washing, Soxhlet extraction washing, vacuum drying and grinding on a solid obtained by microwave synthesis to obtain COF-graphene; sequentially adding thermoplastic polyurethane and ionic liquid into the COF-graphene suspension, and heating and stirring to obtain mixed slurry; and coating the mixed slurry in a mold, and carrying out vacuum drying and hot press molding to obtain the elastomer composite conductive material. The high-conductivity COF-graphene rigid network and the high-elasticity TPU flexible matrix are combined through the ionic liquid, so that the problem of mechanical brittleness of the graphene-COF composite material is fundamentally solved on the basis of keeping the high conductivity advantage of the graphene-COF.

Disclosed herein are methods for preparing an elastomer composite including charging a mixing chamber with at least a solid elastomer and a filler through a ram enclosure and mixing the solid elastomer and the filler in the mixing chamber. The mixing includes moving a ram through a ram space towards the mixing chamber to push the elastomer and the filler in the ram enclosure downwards into the mixing chamber. The mixing further includes directing a flow of gas through the ram space from a vent inlet to a vent outlet disposed in the ram enclosure, the flow of gas passing through the ram space and entraining at least a portion of a vapor resulting from the mixing, and discharging the elastomer composite from the mixing chamber.

The application relates to the technical field of high polymer materials, and particularly discloses a thermoplastic polyester elastomer composite material, a preparation method thereof and an automobile engine air inlet pipe, wherein the thermoplastic polyester elastomer composite material is prepared from the following components in parts by weight: 100 parts of thermoplastic polyester elastomer resin TPEE, 0.5-1.2 parts of a chain extender, 0.05-0.2 parts of a composite catalyst and 4-10 parts of nano acid-removing master batch. The nano acid-removing master batch, the chain extender and the composite catalyst are added, and solid-phase polycondensation is carried out in stages, so that the melt index of the obtained material is stably between 0.50-0.60 g / 10min (230 DEG C / 2.16kg), and the extrusion swell ratio is less than or equal to 12%, which provides reliable guarantee for stable blow molding of subsequent air pipes, especially complex air pipes with 180-degree turns.

The invention discloses a corrosion-resistant layer of a steel structure and a manufacturing method of the corrosion-resistant layer, and belongs to the technical field of steel structure protection. The corrosion-resistant layer sequentially comprises a modified epoxy zinc-rich toughening primer layer, a functionalized epoxy micaceous iron oxide intermediate paint layer and a graphene-elastomer composite finish paint layer from inside to outside, and a synergistic design of toughening and impact resistance, strong bonding and falling prevention and efficient corrosion prevention is adopted. The manufacturing method comprises the steps of base material pretreatment, high-pressure airless spraying of all the coatings and a segmented curing process, and the combination and protection performance of the coatings is strengthened through component optimization and process cooperation. The problems that a traditional coating is fragile, easy to crack, easy to layer and fall off and unbalanced in performance are effectively solved, synergistic improvement of impact resistance, adhesive force and corrosion resistance is achieved, and the coating is suitable for steel structure protection in harsh environments such as railroad bridges and ocean platforms.

The invention discloses a liquid crystal elastomer composite material and a preparation method thereof, and relates to the technical field of liquid crystal elastomers. The method comprises the following steps: firstly, synthesizing an ionic liquid functionalized liquid crystal monomer containing double bonds through a multi-step reaction; then preparing a UiO-66 type metal organic framework material, and sequentially performing amination, maleic anhydride modification and lithium salt adsorption to obtain modified MOFs; and finally, carrying out dispersion reaction on an ion functionalized liquid crystal monomer, the modified MOFs, a cross-linking agent, a photoinitiator and a catalyst in tetrahydrofuran to obtain a liquid crystal oligomer dispersion liquid, casting, drying to form a film, and carrying out stretching orientation and ultraviolet light cross-linking curing to obtain the final composite material. The method has the advantages that a continuous ion transmission path is constructed on the molecular level through chemical bond grafting, meanwhile, a macroscopic ion channel is provided by utilizing the porous MOFs material, and the ionic conductivity of the material is remarkably improved through the synergistic effect of the two.

The present application relates to a treadmill noise reduction mute method, a buffer pad body is arranged between a running plate and a frame, the buffer pad body is composed of a buffer pad base body with an axial cavity inside and a shock absorbing filler filled in the axial cavity of the buffer pad base body, the buffer pad base body is made of a low noise TPS elastomer composite material, the low noise TPS elastomer composite material includes the following weight parts 30-50 parts of butenyl-polydiene-styrene block copolymer, 15-25 parts of polypropylene, 30-50 parts of naphthenic oil, 5-15 parts of nano filler, 3-8 parts of plasticizer, the low noise TPS elastomer composite material has a uniform closed cell microcellular structure with a pore size of 50-200 mu m inside. The buffer pad made of the material has excellent shock absorbing and noise reduction performance, and can effectively solve the problems of limited damping performance of traditional rubber materials and easy permanent deformation.

The invention relates to the technical field of HPP composite tarpaulin production, in particular to a weather-resistant HPP composite tarpaulin and a preparation method thereof. The composite material comprises the following components: HPP-S resin granules, HPP-T resin granules, TPO / SEBS elastomer composite granules, an HALS light stabilizer, a downstream antioxidant, talcum powder and a PP-g-MAH compatilizer, wherein the HPP-S resin granules are obtained by taking isotatic polypropylene as matrix resin and introducing a DMDBS nucleating agent and an HPP antioxidant for modification; the HPP-T resin granules are obtained by polymerizing propylene in a Ziegler-Natta catalytic system, sequentially introducing ethylene and propylene monomers, and modifying through an HPP antioxidant; the TPO / SEBS elastomer composite particles are obtained by mixing TPO and SEBS in proportion, the content of the TPO is 40 wt% to 60 wt%, and the content of the SEBS is 60 wt% to 40 wt%. Ethylene / propylene is introduced in the polymerization process of HPP-T resin to form an endogenous rubber phase, and a uniformly dispersed flexible phase is formed in a polypropylene matrix; the impact strength and low-temperature elongation at break of the finished tarpaulin can be remarkably improved, and the low-temperature toughness and ductility are effectively improved.

This invention discloses a highly grease-resistant thermoplastic polyester elastomer composite material and its preparation method. The composite material is prepared from the following components in parts by weight: 80-95 parts thermoplastic polyester elastomer, 5-20 parts thermoplastic polyamide material, 0.3-2 parts amide composite functional additive, 0.3-2 parts stearic acid additive, 0.5-2 parts chain extender, 0.25-1 part solvent, and 0.6 parts antioxidant; the amide composite functional additive is a composite of oleamide, erucamide, and aliphatic bisamides. The highly grease-resistant thermoplastic polyester elastomer composite material provided by this invention exhibits good performance retention in highly polar grease environments, enabling the protection of drive shafts in the automotive field to function normally under high-temperature environments with grease corrosion, and also offering advantages such as lower noise and longer service life.

In general, in one aspect, embodiments relate to an apparatus that includes a downhole tool, that includes one or more sealing elements that includes a bulk metallic glass (BMG) elastomer composite material.

This invention discloses a high flame-retardant elastomer composite material and its application in special cables, belonging to the technical field of polymer composite materials and cable materials. The composite material comprises, by weight, 100 parts of matrix resin, 60-120 parts of composite flame retardant, 15-40 parts of plasticizer, 1-5 parts of antioxidant, and 2-8 parts of crosslinking agent. The matrix resin is a blend of polyether-type thermoplastic polyurethane and ethylene-vinyl acetate copolymer. The composite flame retardant is a core-shell structure inorganic flame retardant, with a core of nano-zinc hydroxystannate and a shell of magnesium hydroxide, and the surface is modified by a double wet process using a composite silane coupling agent and calcium stearate. The material of this invention meets the UL1581 VW-1 and IEC 60332-3-22 FT4 flame retardant ratings, has an elongation at break ≥350%, and can withstand 1000 temperature cycles from -40℃ to 150℃ without cracking, exhibiting excellent overall performance and suitable for high flame-retardant flexible special cables.

The invention discloses an anti-snagging bird eye cloth fiber surface nanometer groove closing regulation and control method, and relates to the technical field of textile material surface intelligent regulation and control, and the method comprises the following steps: carrying out stress anchoring pretreatment on a fiber substrate to form a fractal branch crack network and dielectric elastomer composite structure; constructing a humidity response unit, wherein the humidity response unit comprises an ionic liquid gel micro-spring array and a photo-thermal response mesoporous coating; through a cooperation mechanism of low-humidity rigid screening and a high-humidity dynamic valve, closed regulation and control are conducted on the nano groove; according to the invention, a fractal crack double-frequency decoupling mechanism is constructed, a dielectric elastomer is combined to regulate and control a humidity threshold value, an ionic liquid micro-spring quantitatively closes a groove and retains a ventilation channel, and a photo-thermal response coating is cooperated to form double-trigger screening, so that full-scene protection of low-humidity rigid snagging prevention and high-humidity dynamic ventilation is realized; the opposite function limitation of a traditional material is broken through, and the snagging resistance, the breathability and the multifunctional protection capacity of the fabric are remarkably improved.

The invention discloses a high-impact-resistance elastomer composite material based on an organic-inorganic copolymerization strategy and a preparation method thereof. The composite material is prepared through an organic-inorganic copolymerization strategy and comprises metal oxide nanoparticles with the particle size of 1-10 nm and rich in unsaturated metal sites on the surface as an inorganic phase and a polymer network containing dynamic covalent bonds as an organic phase, the inorganic phase and the organic phase are connected through a chemical bond to form a molecular-scale organic-inorganic hybrid structure unit, so that uniform dispersion and strong interface combination of the inorganic phase are realized. The preparation method comprises the following steps: regulating and synthesizing zinc oxide nanoparticles with rich unsaturated sites on the surfaces through a regulator; carrying out pre-coordination assembly on the zinc oxide and a lipoic acid monomer to form a lipoic acid-zinc oxide hybrid monomer; and carrying out thermal polymerization to obtain the elastomer composite material. The elongation at break of the obtained material reaches 541% and is increased by nearly 12 times compared with that of pure polylipoic acid, the impact force can be attenuated by 90% or above in a drop hammer impact test, the impact strain rate reaching up to 4000 s <-1 > can be borne, and damage self-healing can be achieved at the room temperature without external force. The material has excellent impact resistance, high toughness, intrinsic self-healing ability and solvent-resistant stability, the preparation method is simple and controllable, and the material has wide application prospects in the fields of personal protection, aerospace, flexible electronics and the like.

The invention provides a stimulus-responsive elastic composite material based on liquid metal phase change and a preparation method thereof, and the preparation method comprises the following steps: taking liquid metal gallium, liquid gallium-zinc alloy or liquid gallium-tin alloy as a matrix, adding a nano heterogeneous nucleating agent X into the matrix, carrying out ultrasonic dispersion, heating and uniformly mixing to prepare Ga-X heterogeneous nucleation particles, wherein the lattice mismatch degree of the nano heterogeneous nucleating agent X is lt; the particle size of the nano heterogeneous nucleating agent is 30 to 60 nm; and uniformly stirring the Ga (at) X heterogeneous nucleation particles, thermochromic powder and a PVA elastomer, preheating, and curing to obtain the stimuli-responsive elastic composite material. The nano heterogeneous nucleating agent X is introduced into the liquid metal, the nucleating behavior of the liquid metal is adjusted, the phase change energy barrier is reduced, the response capacity to external stimulation is enhanced, and the liquid metal elastomer composite material is prepared from the nano heterogeneous nucleating agent X, the PVA elastomer and the thermochromic powder.