276 results about "Thermo responsive" patented technology

The invention discloses a cellulose coated diaphragm and a preparation method thereof in the field of lithium ion batteries, the diaphragm comprises alpha-cellulose pulp, a cellulose grafted phenylboronic acid-co-oligomeric ethylene oxide copolymer, a thermal response star zwitterionic polymer and nano aluminum oxide, and an N-methylmorpholine-N-oxide aqueous solution is adopted as a solvent system. The preparation method comprises the following steps: firstly synthesizing a cellulose grafted copolymer with dynamic borate bonds through atom transfer radical polymerization, then preparing a star polymer with thermal response arms and zwitter-ion terminals by taking cyclodextrin as a core, and finally mixing all the components to prepare coating slurry. And the composite diaphragm is prepared through the processes of coating, phase conversion, ultraviolet curing and drying. The diaphragm combines the thermal stability and lyophilic property of cellulose, forms a dynamic self-adaptive interface layer through the synergistic effect of two functional compounds, has the advantages of active safety protection, dendritic crystal inhibition, long cycle life and the like, and remarkably improves the comprehensive performance of the lithium ion battery.

The invention discloses a high-safety temperature-responsive electrolyte, a lithium ion battery and a sodium ion battery, the high-safety temperature-responsive electrolyte comprises a thermal response solvent, a cosolvent and an electrolyte salt, the thermal response solvent is a thermal response polymer monomer, the thermal response polymer monomer has at least one of the structures of vinyl ether, divinyl ether, dialkenyl amide and dialkenyl butanediimine, the thermal response polymer monomer can quickly form a polymer solid electrolyte under the catalysis of an initiator salt in electrolyte salt under a high-temperature condition, and the fixation of the solid electrolyte enables a diaphragm in a battery not to collapse, so that the battery diaphragm can be used as a lithium ion battery diaphragm. Therefore, short circuit caused by thermal shrinkage and fusion of the diaphragm is avoided, and thermal runaway is avoided. The electrolyte can be used for preparing the lithium-ion and sodium-ion battery, and the lithium-ion and sodium-ion battery can keep a relatively high capacity retention rate while giving consideration to the safety performance.

The invention relates to the technical field of biomedical materials, and discloses an electret electrostatic therapy membrane and a preparation process thereof.The electret electrostatic therapy membrane is prepared from, by mass, 15%-20% of fluorinated polyether ester, 10%-20% of a composite nano-fiber material, 10%-20% of a composite nano-fiber material, 10%-20% of a composite nano-fiber material and the balance water. 1%-2% of carboxymethyl chitosan; 2-5% of nano cerium oxide particles with the particle size of 50-100 nm; 0.5-1.0% of graphene quantum dots, the particle size of which is 5-10 nm; 1%-2% of sodium hyaluronate; the components are prepared into a film through an electrostatic spinning method, electret performance is given to the film through a charge injection process, finally, the film body is attached to a flexible silica gel adhesion layer, and the flexible silica gel adhesion layer is externally coated with a peelable protective film so that the structural integrity can be kept before the flexible silica gel adhesion layer is used. The composite membrane body disclosed by the invention shows excellent adhesion, charge activation capability and thermal response performance in applications of electrostatic therapy, dielectric assisted stimulation and the like, and has good multi-scene adaptability and clinical application potential.

The invention belongs to the technical field of thermal power heating surface treatment, and provides a multi-layer composite self-repairing anti-oxidation coating for a boiler heating surface and a preparation method of the multi-layer composite self-repairing anti-oxidation coating aiming at the technical problems that a thermal power boiler heating surface protective coating is insufficient in bonding strength, insufficient in long-term anti-oxidation capacity and concentrated in interface stress among multi-layer structures. Comprising a bonding layer, a gradient transition layer, a self-repairing functional layer and a ceramic surface layer which are sequentially arranged from inside to outside. The self-repairing functional layer is made of NiCoCrAlY alloy, the bonding layer is made of NiCrAlY alloy, the gradient transition layer comprises four layers of gradient transition layer units, each layer of gradient transition layer unit comprises a gradient composite structure of NiCrAlY and nano Al2O3, the self-repairing functional layer comprises NiCoCrAlY serving as a base body, thermal response type microcapsules are embedded in the NiCoCrAlY base body, and the ceramic surface layer comprises a nano ceramic material composed of Cr, Co, Ni, Fe, Al, Ti and B elements.

The invention discloses a lithium ion battery electrolyte with thermal response passivation and flame retardant functions as well as a preparation method and application thereof. The electrolyte comprises a basic electrolyte, a lithium-phobic passivator, a lithium-phobic flame retardant and a lithium-phobic cosolvent, wherein the basic electrolyte consists of a lithium salt and a lithium-loving main solvent; the mass of the lithium-phobic passivator is 4-10% of the mass of the basic electrolyte, the mass of the lithium-phobic flame retardant is 3-6% of the mass of the basic electrolyte, and the mass of the lithium-phobic cosolvent is 1.7-5% of the mass of the basic electrolyte. The flammability of the electrolyte is inhibited by the lithium-phobic flame retardant; the lithium-phobic cosolvent is used for promoting homogeneous dispersion of the lithium-phobic flame retardant and the lithium-phobic passivator in the lithium-loving main solvent and synergistically enhancing the flame-retardant effect of the system; the lithium-phobic passivator can trigger polymerization in situ under a high-temperature condition to form a stable interface passivation film, so that a violent side reaction between active lithium on a negative electrode side and an electrolyte is effectively inhibited. Through the synergistic effect of multiple components, the intrinsic safety of the lithium ion battery under the condition of high temperature or thermal shock is remarkably improved.

The invention relates to the technical field of sewage treatment, in particular to a preparation method of a degradable bactericide for an oil field. According to the invention, a hydroxypropyl guanidine gum-polycaprolactone-ethylenediamine fragment copolymer is taken as a carrier, a methylisothiazolinone quaternary ammonium salt (Q-MIT) bactericide is loaded, and the degradable bactericide for the oil field is obtained by cooperating with a dodecyl ethyl sulfide (TC-SE) bactericide and combining with sodium polyaspartate. A carrier forms a hydrogen bond with a polar group on the surface of a biological membrane through a hydroxypropyl guanidine gum main chain to realize targeted anchoring, a polycaprolactone branched chain encapsulates Q-MIT through a hydrophobic effect, primary amino groups of ethylenediamine are introduced to form a pH sensitive Schiff base bond with Q-MIT, and the primary amino groups and adipic dihydrazide form a thermal response hydrazide bond to construct a dual dynamic covalent bond, so that controlled release of Q-MIT is realized, and the biomembrane is prepared. And moreover, the components of the whole system are connected through degradable chemical bonds, so that the environmental protection property and sustainability of oil field operation are guaranteed.

The invention discloses a flame-retardant PC (polycarbonate) composite material based on high-temperature interface crosslinking and an in-situ reinforcement process thereof. The composite material comprises polycarbonate resin, reinforced fibers with a thermal response interface, a flame-retardant synergist and a processing aid. The core is that a thermal response interface layer and a sacrificial protection layer are sequentially constructed on the surface of the reinforced fiber, the thermal response interface layer is formed by grafting a silane coupling agent containing peroxide bonds through covalent bonds, and the sacrificial protection layer is a low-melting-point coating material. According to the design, the material has the temperature-triggered intelligent response characteristic; in daily processing and use, the protective layer ensures that an interface is stable and the binding force is slowly repaired; under the condition of high-temperature fire, the interface layer is quickly triggered to form carbon through crosslinking, so that the flame-retardant efficiency is remarkably improved, and melt dripping and a candlewick effect are effectively inhibited. The high mechanical strength, the long-acting durability and the intrinsic flame-retardant safety of the material are synchronously realized, and the material is suitable for the high-requirement fields of electronic appliances, new energy automobiles and the like.

The present disclosure generally relates to carbon sequestration materials, and related systems, articles, and methods. In some embodiments, the carbon sequestration material comprises a gel. In some embodiments, the gel comprises a hydrophilic material, a thermo-responsive polymer, and a carbon dioxide capture medium. In accordance with some embodiments, the gel, when in the presence of water, is capable of sequestering and / or releasing gaseous carbon dioxide. In some embodiments, the gel has a relatively large sequestration capacity such that a relatively large amount of carbon dioxide per gram of gel can be sequestered by the gel. In some embodiments, the gel sequesters a surprisingly large amount of carbon dioxide when exposed to relatively humid conditions. In some embodiments, the gel releases an advantageous amount of gaseous carbon dioxide that was previously sequestered by the gel.

The invention discloses thermal stimulation response hydrogel and a preparation method thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: dissolving acryloyl valine, acrylamide, methylene bisacrylamide and a photoinitiator in an organic solvent, and defoaming to obtain a precursor solution; and S2, putting the precursor solution into a mold, carrying out ultraviolet light-induced curing, soaking the obtained hydrogel in an acid solution, replacing the organic solvent, and then carrying out heat treatment to obtain the thermal stimulation response hydrogel. Compared with other existing thermal response type hydrogel, the thermal response type hydrogel has the advantages that the fracture stress, the modulus, the tensile work and the like are remarkably improved in the order of magnitude level, and excellent comprehensive mechanical properties are shown. The thermally-induced hardening hydrogel developed by the invention has a wide application prospect in the field of engineering devices requiring higher modulus and requiring significant change of mechanical properties before and after heating.

The invention discloses a robot simulation skin and a preparation method of the robot simulation skin. The formula of the robot simulation skin is composed of 100 parts of an organosilicon polymer with a main chain containing double bonds, 30-45 parts of a hyperbranched phenyl silicone oil plasticizer, 5-18 parts of a nanoscale texture conditioning agent, 7-22 parts of a dynamic crosslinking system and 1.5-9 parts of a function response additive. Through cross-scale cooperation of an organosilicon polymer matrix and functional components, a conformational entropy buffer network of a hyperbranched plasticizer is constructed on a molecular level, a light-force energy flow channel decoupling mechanism of a core-shell regulator is formed on a mesoscopic level, space-time regulation and control of gradient crosslinking and photo-thermal response are realized on a macroscopic level, and meanwhile, the cross-scale cross-linked hyperbranched polymer has good application prospects. The physical essence of inherent contradictions of'high-temperature softening-low-temperature embrittlement 'and'light transmittance-elasticity mutual exclusion' of existing silica gel skin is broken through, and the sensitivity of conformation entropy change to temperature is reduced through the molecular topology confinement effect.

The invention discloses a silicon-based thermal response viscosity-reducing film synergistically-enhanced bending-resistant folding OCA (Optically Clear Adhesive) and a processing technology thereof, and mainly aims to provide the silicon-based thermal response viscosity-reducing film synergistically-enhanced bending-resistant folding OCA and the processing technology of the silicon-based thermal response viscosity-reducing film synergistically-enhanced bending-resistant folding OCA. Comprising a flexible substrate layer, a first bonding layer, a thermal response viscosity-reducing film layer, a second bonding layer and a functional OCA main body layer which are arranged in sequence, the flexible substrate layer is composed of a transparent polyimide compound; the first bonding layer is made of modified organic silica gel; the thermal response viscosity reducing film layer is composed of a silicon-based material and thermal response microspheres; the second bonding layer is made of modified organic silica gel which is the same as that of the first bonding layer; and the functional OCA main body layer is made of a polyurethane-organic silicon hybrid material. According to the technical scheme, the bending strength and the performance stability of the OCA used by the folding screen can be effectively improved.

The invention relates to a cross-scale thermal response self-repairing polyurethane material as well as a preparation method and application thereof, and belongs to the field of self-repairing polyurethane materials. A pyridine group is introduced into a main chain of the polyurethane material to form a reversible coordination bond with metal salt, so that molecular-scale self-repairing is realized, and the dynamic property of the coordination bond can be enhanced by a preferable double-metal synergistic system; a side chain is designed to be of a furan-maleimide structure based on a Diels-Alder reaction, thermal response macroscopic self-repairing performance is given to the material, a methyl substituted furan group is introduced to improve steric hindrance, and the high-temperature application scene can be expanded. The polyurethane material has a thermal response and metal coordination dual self-repairing mechanism, and is suitable for polymer protection and repairing application under severe working conditions of high temperature, high ion concentration and the like.

The invention discloses bamboo-based fire extinguishing gel as well as a preparation method and application thereof, and belongs to the technical field of macromolecular flame-retardant materials. The technical problem to be solved is to solve the problems of fire risk caused by vibration in the transportation process of the lithium ion battery and extremely high ignition speed, long combustion duration, extremely high combustion temperature, high re-combustion risk, generation of poisonous gases such as carbon monoxide and the like, serious harm to human health and the like caused by fire of the lithium ion battery. The invention provides the bamboo-based fire-extinguishing gel with dual purposes, and the bamboo-based fire-extinguishing gel not only has good damping performance and thermal responsiveness, has excellent adhesiveness and coverage after being liquefied, but also can absorb a large amount of heat and reduce the temperature, and has the advantages of efficient fire-extinguishing performance, environmental friendliness and the like. According to the technical scheme, the bamboo-based fire extinguishing gel is characterized by being prepared from water, bamboo powder, urea, glycerin, carrageenan and hydroxypropyl methyl cellulose.

The invention discloses an organic boric acid compound with a thermal response behavior and a membrane material prepared from the organic boric acid compound, and relates to the technical field of thermal response intelligent covalent organic polymer membranes. According to the organic boric acid compound, condensation is induced through vacuum dehydration of boric acid groups in a molecular structure, a boron-oxygen-six-ring cross-linked network can be constructed on the surface of a membrane, and the thermal response behavior is achieved. The network has a clear UCST type thermal response mechanism, when the temperature is lower than the cloud point temperature, the compound forms a stable aggregate, so that the membrane surface presents a specific pore structure and surface characteristics, when the temperature is higher than the cloud point temperature, the aggregate is dissociated into a monomer, the hydrophilicity and hydrophobicity and pore size of the membrane are dynamically adjusted, and the membrane surface has a specific pore structure and surface characteristics. The thermal response behavior derives from conformational change driven by intramolecular hydrogen bonds, complex polymer synthesis steps are not needed, temperature regulation and control of membrane performance can be achieved only through micromolecule self-assembly, and a simple and environment-friendly technical path is provided for preparation of a thermal response membrane material.

The invention discloses a composite electrolyte and a preparation method and application thereof. The composite electrolyte comprises a lithium salt, a solvent, a Lewis acid precursor, a Lewis acid trapping agent and a thermal response monomer, the mass content of the Lewis acid precursor is 0.1-5%, the mass content of the Lewis acid trapping agent is 2-5%, and the mass content of the thermal response monomer is 5-30%. The composite electrolyte can be rapidly polymerized at high temperature, so that the thermal stability of the electrolyte is improved, an ion transmission path is cut off, meanwhile, the composite electrolyte can be stably kept in a liquid state in a non-high-temperature environment, the electrochemical performance of the composite electrolyte is not influenced, and the composite electrolyte can be compatible with various storage and use environments; the problems of gas production and fire in the thermal runaway process of the battery can be remarkably inhibited, the safety of the battery is improved, and the electrical performance of the battery in a normal operation state is not influenced.

The invention relates to the technical field of antibacterial materials, and provides a light-enzyme-heat synergistic antibacterial nano composite material and a preparation method thereof.The preparation method comprises the steps that 1, a copper-based chalcogenide with a plasma resonance effect serves as a structural template, a transition metal oxide intermediate layer and a bismuth oxyhalide epitaxial layer are sequentially constructed on the surface of the copper-based chalcogenide with the plasma resonance effect through a step-by-step continuous solvothermal method, and the copper-based chalcogenide with the plasma resonance effect serves as the structural template; forming a core-shell heterojunction with Z-type energy band matching; (2) pre-assembling a natural enzyme and a monatomic nano-enzyme in a buffer system to form a composite catalytic unit with an electron transfer channel; and (3) by taking the core-shell heterojunction as a polymerization core, under the precise temperature control condition of 0-10 DEG C, initiating active free radical polymerization through an interface, constructing a thermal response polymer shell layer on the surface of the heterojunction, and encapsulating the composite catalytic unit in a functional microdomain of a polymer network in situ. The anti-bacterial fabric can achieve a better synergistic anti-bacterial effect.

The invention discloses a phase-change radiation refrigeration coating which is prepared by the following steps: dispersing nano aluminum oxide particles in phase-change paraffin in advance to form a high-thermal-conductivity and high-radiation composite phase-change material, and encapsulating the high-thermal-conductivity and high-radiation composite phase-change material in a porous ceramic skeleton through vacuum infusion to obtain composite phase-change ceramic particles; then, the composite phase-change ceramic particles are dispersed in polyol resin containing aluminum oxide microspheres, the aluminum oxide microspheres accurately block pores in the surface of the porous ceramic through particle size matching, paraffin leakage is prevented, and the aluminum oxide microspheres serve as heat conduction channels and radiation units at the same time, so that it is guaranteed that the finally prepared coating integrates phase-change temperature control, efficient heat conduction and radiation refrigeration; the high sunlight reflectivity (94%-98%) and the high atmospheric window infrared emissivity (92%-96%) are achieved, and the thermal response rate and the leakproof performance are remarkably improved.

The present invention proposes a method and use for stabilizing a simple agglomerate for pH and salt and with adjustable size. In phosphoric acid buffer solutions with different salt concentrations and pH values, the polyacrylic acid hydroxypropyl group condensation body has specific stability; hydrophobic thermal response blocks are introduced into a hydroxypropyl acrylate monomer through reversible addition-fragmentation chain transfer polymerization to regulate and control the size of a condensation body, and a phase separation behavior is shown at different temperatures; a hydrophobic block without thermal response is introduced to regulate and control the size of the aggregate, and no thermal response behavior is shown. Continuous regulation and control of the size of the aggregate from the micron level to the nano level are achieved, and the requirements of different application scenes are met. The hydroxypropyl polyacrylate condensation body can be used for packaging various dyes and drugs; high-efficiency enzyme protection is achieved, formed aggregates can protect glucose oxidase, and the retention rate of enzyme activity reaches 85% or above after treatment is conducted for 3 hours at 60 DEG C; as a micro-reactor for the reaction of generating p-nitrobenzaldehyde phenylhydrazone from p-nitrobenzaldehyde and phenylhydrazine, the reaction rate is greatly improved.

The invention discloses an electrothermal response three-layer hydrogel actuator and a preparation method thereof. The preparation method comprises the following steps: (1) dissolving N-isopropylacrylamide in deionized water, adding polyvinyl alcohol, magnesium lithium silicate, nano silicon dioxide, a cross-linking agent, ammonium persulfate and an initiator, and polymerizing to obtain a poly (N-isopropylacrylamide)-polyvinyl alcohol hydrogel layer; (2) performing hot pressing on the flexible flat cable, the silver nanowire layer and the two polyurethane films to obtain a silver nanowire flexible heater; and (3) rolling the polyimide film, the poly (N-isopropylacrylamide)-polyvinyl alcohol hydrogel layer and the silver nanowire flexible heater to obtain the three-layer hydrogel actuator. The method is simple and easy to operate, and the obtained hydrogel actuator is good in mechanical property, has good, rapid and stable responsiveness to temperature and current, enriches actuating conditions, can play a better role in the fields of underwater robots, holders, valve switches and the like, and is excellent in application prospect.

This invention relates to the field of catalyst technology, specifically to a latent epoxy resin curing catalyst with precisely controllable activity and its preparation method. The catalyst is 1-(2-(N-tert-butyl-N'-phenylurea)ethyl)-3-(2-(phenyldithio)ethyl)imidazolium, which simultaneously possesses an imidazolium ring catalytic active center, a thermally hindered urea bond, a temperature-responsive dynamic disulfide bond, and an intramolecular hydrogen bond unit. Precise control of catalytic activity is achieved through the synergistic effect of these triple dynamic bonds. The catalyst exhibits excellent storage stability at room temperature, rapid curing at activation temperature, and is free of metal ions. The cured epoxy resin exhibits good dielectric properties. This invention's catalyst achieves a balance between excellent latency and rapid curing performance through the synergistic control of these triple dynamic bonds. It possesses excellent dielectric and mechanical properties, can be compounded with various curing agents, and its preparation method is simple and easy for industrial production.

The application discloses a composite electrolyte and a preparation method and application thereof. The composite electrolyte comprises a lithium salt, a solvent, a Lewis acid precursor, a Lewis acid capturing agent and a thermal response monomer, the mass content of the Lewis acid precursor is 0.1-5%, the mass content of the Lewis acid capturing agent is 2-5%, and the mass content of the thermal response monomer is 5-30%. The composite electrolyte can rapidly polymerize at high temperature, so that the electrolyte thermal stability and the ion transmission path are cut off, meanwhile, the electrolyte can stably keep liquid state in a non-high-temperature environment, and the electrochemical performance is not affected, and the electrolyte is compatible with various storage and use environments. When the electrolyte is applied to a lithium ion battery, the electrolyte can significantly inhibit gas production and fire in a battery thermal runaway process, improves the safety of the battery, and does not affect the electrical performance of the battery in a normal operation state.

The invention provides a silicon dioxide essence microcapsule which is characterized in that essence is coated in a hydrophobic organic compound in a mononuclear or multinuclear form to form a core layer; and silicon dioxide is a shell layer. The outer layer of the microcapsule is a silicon dioxide shell, the secondary outer layer is a hydrophobic organic compound which is solid at room temperature, and essence is dispersed in the secondary outer layer in a single-core or multi-core form. The preparation method adopts a soap-free method and comprises the following steps: mixing and emulsifying essence, an organic compound which is in a solid state at room temperature and a polyalkoxy siloxane precursor, and then performing hydrolytic condensation on the precursor on a water phase interface to form a silicon dioxide shell so as to realize coating. The method is environment-friendly, and a surfactant does not need to be added. The obtained microcapsule has the characteristics of high encapsulation efficiency, excellent long-acting slow release performance, excellent thermal response controlled release capability and capability of desorbing and reloading essence after being used, and has wide application prospects in the fields of daily chemicals, textiles, foods and the like.

The application discloses a self-repairing flexible bionic composite material with high tear resistance and a preparation method thereof. The method is characterized in that a room-temperature self-repairing flexible polyurea elastomer SSPU is prepared by reacting THI, DBI and PDMS. The self-repairing flexible bionic composite material with high tear resistance is prepared by physically mixing the room-temperature self-repairing flexible polyurea elastomer SSPU and a gallium-indium-tin liquid alloy. The self-repairing flexible bionic composite material has the advantages of not affecting the flexibility of the material, greatly improving the tear resistance of the material, and having excellent photo-thermal response characteristics and fast photo-thermal repair capacity, and is suitable for preparing various stretchable and functional devices.

The invention provides a composite pole piece, a preparation method thereof and a secondary battery. The composite pole piece comprises a current collector and a coating arranged on the surface of at least one side of the current collector, the coating is an alloy coating, and the preparation process of the composite pole piece comprises the following steps: sequentially smelting and cooling raw materials containing a nickel source, a titanium source, a molybdenum source, an aluminum source and a carbon source to obtain a first product; performing heat treatment on the first product to obtain a second product; carrying out atomization treatment on the second product to obtain a powdery third product; and coating at least one side surface of a current collector with the third product to form an alloy coating so as to obtain the composite pole piece. According to the invention, the functional shape memory alloy (SMA) is coated on the current collector as the thermal response coating, so that the purpose of adjusting the gap between the pole pieces in real time according to the temperature change is achieved, and the technical effects of optimizing the heat transfer path in the battery cell, reducing the risk of thermal runaway and improving the overall safety of the battery are achieved.

The invention is suitable for the technical field of composite material forming, and provides a complex special-shaped structure production process method based on an intelligent composite material mold, and the production process method comprises the following steps: S1, preparing the intelligent composite material mold; s2, a complex special-shaped structure is formed; s3, controllable flexible demolding is carried out; s4, the intelligent composite material mold is subjected to shape restoring; the complex special-shaped structure is prepared through the intelligent composite material mold composed of the thermal response resin matrix and the mixed fiber felt, integrated forming of the complex special-shaped structure can be achieved, and it can be guaranteed that the mold strength and the product size precision are greatly improved, and the mold reusability is greatly improved.

The application discloses a vegetable oil-based self-repairing photo-thermal response shape memory polymer, a preparation method and application thereof, and relates to the technical field of shape memory polymers. In a first step, oleic acid, formic acid and hydrogen peroxide are reacted to obtain an intermediate product A by using p-toluenesulfonic acid as a catalyst; in a second step, the obtained intermediate product A is reacted with hexamethylene diisocyanate and p-benzoquinone dioxime to obtain an intermediate product B; and in a third step, epoxy resin and an epoxy resin accelerator are added and heated to be cured to obtain the vegetable oil-based self-repairing photo-thermal response shape memory polymer. The oxime-urethane dynamic bond and the ester exchange dynamic bond in the vegetable oil-based self-repairing photo-thermal response shape memory polymer prepared by the application can endow the prepared polymer with excellent self-repairing ability and shape memory performance. The polymer is prepared by using a bio-based material, the process is simple, the mechanical performance is controllable, the self-repairing and shape memory functions can be realized under the condition of ultraviolet light excitation and heating, and the shape memory performance and mechanical performance loss after repeated use is small.

The invention relates to the technical field of lithium ion batteries, in particular to a thermal response interface passivator composition, an electrolyte and a lithium ion battery. The thermal response interface passivator composition comprises a silane component and a chalcogenide component, the silane component is selected from any one or more of 3-mercaptopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane or gamma-methacryloyloxypropyltrimethoxysilane, and the silane component is selected from any one or more of 3-mercaptopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane and gamma-methacryloyloxypropyltrimethoxysilane; the sulfur component is selected from diisopropyl xanthate disulfide and / or diphenyl disulfide. The thermal response interface passivator composition provided by the invention does not influence the electrochemical performance of a battery under the conventional operation condition of the battery, and can spontaneously polymerize on the surface of a negative electrode at the high temperature of 100-120 DEG C to form a stable and compact passivation layer, namely, an effective thermal barrier is formed before a diaphragm is broken, so that electron leakage and electrolyte decomposition are effectively blocked, and the service life of the battery is prolonged. And the thermal safety of the battery is obviously improved.

The application discloses a kind of non-contact sensing-actuating composite material and its preparation method, the method comprises: the shape memory fiber film is pre-stretched to produce deformation after cooling and is fixed to obtain sensing-actuating layer;Electrode is prepared on the partial area of the upper surface of sensing-actuating layer;Sensing-actuating layer is laminated on the polydimethylsiloxane film that is not completely cured, and it is completely cured by standing, and the face of sensing-actuating layer preparation electrode faces polydimethylsiloxane film;Silver nanowire dispersion liquid is coated on the face of sensing-actuating layer not prepared electrode, and dried.The composite material of the application has nanoscale multilayer network structure, based on "dielectric polarization-electric heating conversion-thermal response actuation" triple effect, self-awareness and actuating are fused, complete and accurate logical relationship is established with three-dimensional movement and triggers material to carry out flexible actuating, realizes non-contact "sensing-actuating" integration.

The invention provides a polycarbonate conductive elastomer based on MXene doping and a preparation method and application thereof, the conductive elastomer comprises aliphatic polycarbonate (APC), a deep eutectic solvent (PDES) and MXene, the mass ratio of the aliphatic polycarbonate to the deep eutectic solvent is 1: 0.5-3, and the addition amount of the MXene is 1-5 wt% of the total mass of the APC and the PDES. The conductive elastomer obtained by the invention is simple in preparation process, environment-friendly and free of high temperature and high pressure; the comprehensive performance of mechanical strength, electrical sensitivity, biocompatibility and degradability, photo-thermal response and antibacterial performance is realized; the material is stable in structure and suitable for the fields of flexible sensors, electronic skin, health monitoring, photo-thermal therapy, intelligent antibacterial materials and the like.

The thermal response driver comprises a shell, a thermal expansion material, a piston and a sealing assembly. The shell comprises a shell containing cavity and an opening communicated with the shell containing cavity. A thermal expansion material is contained in the housing cavity. The piston at least partially extends into the housing cavity from the opening. The sealing assembly comprises a cover device and a sealing device, the sealing assembly is attached to the shell at the opening, and the sealing assembly covers the opening and is arranged around the piston. The sealing device comprises a first sealing piece and a second sealing piece. One or both of the housing and the cover device define a first accommodation portion and a second accommodation portion, where the first accommodation portion and the second accommodation portion are separated from each other by the cover device in an axial direction of the thermally responsive driver to independently accommodate at least a portion of the first seal and at least a portion of the second seal, respectively. According to the thermal response driver, the sealing assembly with the two sealing pieces is provided, the containing part separated by the rigid cover device is provided for the two sealing pieces, and the good sealing effect can be obtained.