363 results about "Shape-memory polymer" patented technology

The invention provides a low-voltage cable, and relates to the technical field of cables, the low-voltage cable comprises a conductor layer, a support layer, a shielding layer and a sheath layer, the conductor layer is composed of multiple strands of fractal stranded conductors, and each fractal stranded conductor comprises an inner-layer superfine silver-plated copper wire, a middle-layer copper-clad aluminum wire and an outer-layer nickel-plated copper alloy wire; the supporting layer wraps the conductor layer and comprises an inner supporting layer, a dynamic framework layer and an outer restraint layer, the inner supporting layer is an obliquely wound aramid fiber woven belt, the dynamic framework layer is formed by alternately arranging shape memory polymers and carbon fiber composite belts, and the outer restraint layer is a spirally wound silica gel-glass fiber composite rope. The shielding layer comprises a tinned copper wire woven mesh; the sheath layer is a thermoplastic polyurethane matrix, a microcapsule self-repairing agent is dispersed in the thermoplastic polyurethane matrix, a microcapsule comprises a siloxane prepolymer, and the thermoplastic polyurethane matrix further comprises graphene nanosheets. Through collaborative design of the fractal stranded conductor layer, the dynamic skeleton support layer, the shielding layer and the self-repairing sheath, comprehensive improvement of cable performance is realized.

The invention discloses an intelligent defect detection system and a self-repairing method for a flexible base material RFID tag, and belongs to the technical field of Internet of Things electronic device manufacturing. According to the system, a three-dimensional dynamic scanning system is constructed by integrating a high-resolution image acquisition module, a multispectral sensor array and a mechanical arm motion platform, and surface and internal structure characteristics of a flexible substrate are captured in real time. A defect identification algorithm based on deep learning is combined with a multi-scale convolutional neural network and a transfer learning technology, precise classification of 12 types of defects such as microcracks, conductive layer fractures and base material deformation is realized, and the detection precision reaches 99.2%. A dual-mode self-repairing mechanism is put forward, specifically, nano-silver conductive colloid is injected through a microfluid channel for the defects of the conductive layer, and 3D structure reconstruction is achieved through a controllable temperature field; for substrate damage, a photoresponse shape memory polymer patch is adopted, and molecular-level bonding repair is achieved after ultraviolet light activation. According to the scheme, the detection efficiency is improved by more than 5 times, and the radio frequency performance of the tag is recovered to 98.7% of the initial value after self-repairing.

The invention discloses a coating as well as a preparation method and application thereof. The coating comprises the following raw materials: potassium silicate; ethyl orthosilicate; a nanometer titanium dioxide sol; rare earth is doped with nano titanium dioxide; compounding zinc oxide nanoparticles; nano silicon dioxide sol; a fluorosilane coupling agent; a fluorocarbon surfactant; a conductive carbon nanotube; nano aluminum oxide sol; an organic silicon modified acrylate emulsion; a boron nitride nanosheet; hollow glass beads; a shape memory polymer; the invention discloses a self-repairing nanofiber. After a coating is formed by using the coating, the coating has the characteristics of high light transmittance, good self-cleaning effect, high hardness, good adhesive force and excellent weather resistance, and can be applied to a photovoltaic module to replace an existing photovoltaic module coating product.

An adhesive gripper for pick-and-place maneuvers comprises one or more legs, where each leg terminates in a foot rotatably connected to the respective leg. Each foot includes a SMP dry adhesive comprising a shape memory polymer, and a rigid backing layer attached to a back side of the SMP dry adhesive, such that a front side of the SMP dry adhesive is available for attachment and release of objects. The adhesive gripper further includes a handle portion connected to the one or more legs, a release mechanism comprising a release ring within the handle portion, and one or more releasing rods integrated with the one or more legs for release of an object onto a substrate.

The robot simulation skin structure comprises a temperature control unit and an evaporation heat dissipation unit, the temperature control unit comprises a flexible base layer and a silver electrode layer, the silver electrode layer covers the flexible base layer, the flexible base layer is made of a flexible PTC material, the evaporation heat dissipation unit comprises a liquid storage layer and an opening and closing door, and the opening and closing door is made of a flexible PTC material. The opening and closing door covers the liquid storage layer, the opening and closing door is a shape memory alloy opening and closing door or a shape memory polymer opening and closing door, and heat dissipation liquid is arranged in the liquid storage layer. Therefore, according to the simulated skin structure, the temperature sensing function, the self-adaptive heating function and the evaporative heat dissipation function are integrated into a single flexible structure, the autonomous response of local heat management can be achieved without an external complex control system, and therefore an extra sensor, an extra controller and an extra complex circuit are omitted; independent work and quick response of each local area are realized, and the system structure is greatly simplified.

The invention discloses a shape memory polymer micro-nano column array preparation method based on femtosecond laser processing, and belongs to the technical field of bionic adhesive materials. According to the method, an epoxy resin type shape memory polymer serves as a matrix, an anodic aluminum oxide template and a femtosecond laser micromachining technology are combined, a nano-column array is formed through AAO template copying, then a micron-column array is formed on the surface of the template through femtosecond laser machining, and finally the micron-nano composite column array with the gecko foot imitating structure is obtained. The method has the advantages of being high in machining precision, high in structural controllability, simple in process, capable of achieving large-area preparation and the like, and is suitable for material preparation in the fields of bionic adhesion, micro-nano sensing, intelligent surfaces and the like.

The invention discloses an underground mine goaf filling body strengthening and subsequent mining joining method, and relates to the technical field of mine mining. Comprising the following steps of intelligent filling body construction and reinforcement, multi-source fusion intelligent monitoring and digital twinning construction, data-driven subsequent mining dynamic intelligent decision making and energy regulation and control, targeted restoration and collaborative ecological reconstruction. The intelligent filling body is made of the shape memory polymer fibers and the nanometer piezoelectric ceramic particles, the layering process is combined to improve the strength and real-time state feedback, the safety and durability of the filling body are remarkably improved, the high-fidelity digital twinborn model is constructed in a fused mode, intelligent decision making and active wave absorbing regulation are linked, and the stability of the filling body is improved. The subsequent mining efficiency can be effectively improved, the damage risk of the filling body can be effectively reduced, in addition, the damage area is accurately positioned through the unmanned aerial vehicle, directional grouting repair is conducted, heavy metal is solidified through microorganisms, solid waste is recycled, the resource utilization rate in the mining process is increased, and the environmental burden is reduced.

The invention relates to the technical field of preparation of high-moisture-absorption warm-keeping anti-wrinkle flexible cloth, in particular to high-moisture-absorption warm-keeping anti-wrinkle flexible cloth and a preparation process thereof.According to the designed moisture-absorption skin-friendly layer, alkali decrement treatment and silane coupling agent grafting treatment are combined, and the natural antibacterial property of coffee grounds is reserved; the shape memory polymer fibers of the anti-wrinkle layer deform when the temperature is larger than or equal to the glass transition temperature, the shape is fixed after cooling, a nanometer adhesive is melted in the hot pressing process to fill gaps of a framework, and the elastic recovery rate after repeated folding is far higher than 85%. The high porosity and low heat conductivity coefficient of aerogel fibers of the warm-keeping layer are combined with the heat storage and temperature regulation functions of phase change microcapsules, so that the air permeability of the warm-keeping layer is remarkably improved; all the layers are chemically bonded through plasmas to form covalent bond combination, so that the phenomenon of layering after multiple times of water washing or bending is effectively avoided.

The invention relates to the technical field of cables, and discloses a multilayer flame-retardant heat-conducting crosslinked polyethylene cable structure and a preparation process thereof. The product sequentially comprises a conductor layer, a heat-conducting flame-retardant buffer layer, a flame-retardant reinforced linkage layer and an outer sheath layer from inside to outside, wherein the heat-conducting flame-retardant buffer layer comprises a cross-linked polyethylene matrix, boron nitride, aluminum hydroxide and a shape memory polymer, and the outer surface of the heat-conducting flame-retardant buffer layer is provided with interlocking bulges with embedded heat-conducting microtubes; the flame-retardant reinforced linkage layer contains a cross-linked polyethylene matrix, expanded graphite and graphene, and a groove with a flame-retardant elastic piece is formed in the inner surface of the flame-retardant reinforced linkage layer. The preparation method comprises the following steps: firstly preparing the silver-plated conductor, then respectively preparing the heat-conducting flame-retardant buffer layer and the flame-retardant reinforced linkage layer, then aligning the two layers, carrying out hot-pressing compounding, carrying out irradiation crosslinking on the composite structure, and finally extruding and coating the outer sheath and carrying out cooling shaping. The product can be used in scenes of new energy power stations, data centers and the like, and has the advantages of synergism of flame retardance and heat conduction and long-term stability of an interlayer structure.

The present application relates to a kind of composite current collector and its preparation method, belong to secondary battery technical field.The composite current collector provided by the present application has the original structure of sharp cone for shape memory polymer support layer, and the opening of support layer is filled with foaming agent and foaming aid.A kind of composite current collector provided by the present application can reduce weight and improve the energy density of battery.Secondly, the composite current collector provided by the present application increases the heat-sensitive function, which can cut off the electrochemical reaction inside the secondary battery on one hand after the thermal runaway and external impact of battery, and can reduce the heat generation of secondary battery on the other hand when the secondary battery is at high temperature, which has a triple guarantee for the safety performance of battery.

The invention discloses a self-adaptive wearing and monitoring method of an intelligent drainage monitoring system, and relates to the technical field of medical intelligent wearing, and the method comprises the steps: collecting the drainage part data of a patient through multi-modal biological characteristics, optimizing the wearing parameters through a particle swarm algorithm, and driving a shape memory polymer to adjust the equipment fitting degree, biochemical indexes, pressure and flow of drainage liquid are detected in real time through a micro-fluidic chip and various sensors, intelligent early warning of abnormity is achieved in combination with a self-adaptive neural network, parameters such as drainage negative pressure are automatically adjusted according to physiological signals of a patient, risks are predicted through a digital twinborn model, and a maintenance scheme is generated. According to the intelligent drainage monitoring system, self-adaptive wearing is achieved, and the comfort level of a patient is improved; real-time accurate monitoring and intelligent early warning are achieved, and medical safety is guaranteed; drainage parameters are automatically adjusted according to patient states, and treatment efficiency is improved; the intelligent dredging and anti-infection functions are achieved, the medical risk and cost are reduced, and the clinical application value is high.

The invention discloses a preparation method of a shape memory polymer nanorod array, and belongs to the technical field of bionic adhesive materials. According to the method, on the basis of an anodic aluminum oxide template, hydrophilic or hydrophobic chemical modification is carried out on the surface of the anodic aluminum oxide template, the surface wettability of a template pore channel is adjusted, and then the permeation behavior of an epoxy resin precursor in the pore channel is controlled. The preparation method comprises the following specific steps: modifying an AAO template, preparing and defoaming an epoxy resin mixture, filling the template, curing, removing an aluminum substrate, dissolving an aluminum oxide layer, and finally obtaining the shape memory polymer nanorod array with high Young modulus (1-20 GPa). According to the method, a template method is combined with chemical modification, the process steps are clear, the conditions are mild, the method is particularly suitable for preparing a hard micro-nano composite structure matched with the mechanical property of a gecko script characteristic material, and an effective technical support is provided for research of a high-performance dry adhesive material.

The invention provides a 4D printing esophageal stent and a preparation method thereof. The esophageal stent comprises a stent main body and a drug-loaded fiber membrane with a core-shell structure, the stent main body is a tubular stent composed of a bionic water lily hollow structure; the diameters of the head end and the tail end of the support body are larger than the diameter of the middle section, and barb structures are arranged on the outer surfaces of the head end and the tail end. The stent main body is a biodegradable shape memory polymer; the drug-loaded fibrous membrane is positioned on the outer surface of the middle section of the stent main body, and the drug-loaded fibrous membrane contains drugs. The 4D printing esophageal stent provided by the invention has excellent compressive bearing capacity and anti-slip capacity, and the drug-loaded fibrous membrane can avoid esophageal restenosis through long-term uniform slow release of drugs, so that the life safety of a patient can be further guaranteed.

The invention discloses an ultraviolet-resistant and high-temperature-aging-resistant photovoltaic cable structure which comprises a cable conductor, and a buffer layer, an insulating layer, a shielding layer and a sheath layer which are sequentially arranged on the outer side of the cable conductor. The insulating layer is formed by co-extruding a heat-conducting buffer layer, a main insulating layer and a reflection isolating layer, and the heat-conducting buffer layer is provided with a heat-conducting channel along the axial direction; the shielding layer comprises a main body shielding layer and a thermal insulation layer. Silver-plated copper wires are embedded in the thermal insulation layer. Lotus-leaf-like bionic protrusions are arranged on the outer surface of the sheath layer, and a shape memory polymer film is embedded in the sheath layer. The cable conductor is made of high-purity oxygen-free copper and is spirally twisted, a ceramic composite coating is coated outside the cable conductor, and the buffer layer is a polytetrafluoroethylene film. According to the structure, through cooperation of multi-layer composite design and functional materials, the effects of rapid heat dissipation, improvement of temperature resistance and aging resistance, effective blocking of ultraviolet rays, enhancement of structural stability and the like are achieved, the problems that an existing photovoltaic cable is poor in weather resistance, insufficient in heat conduction and prone to structure failure are solved, and the photovoltaic cable can be widely applied to outdoor scenes such as photovoltaic power stations and the like.

The invention relates to the technical field of control of intelligent implanted medical instruments, and discloses an aneurysm neck sealing system and a control method. Digital subtraction angiography is adopted to measure the neck diameter in multiple directions, an average value is calculated, the target neck sealing radius is set by combining the size of an embolism device, and it is ensured that instrument type selection is scientific and reasonable. The triggering temperature and recovery kinetics of the shape memory polymer are determined through a constant-temperature experiment, an actual expansion radius model is established, and quantitative control over the heating process is ensured. A heat balance model is established by using the heat capacity and cooling curve of the embolism device, and temperature rise and heating power expressions are deduced, so that fine regulation and control of temperature and power are realized. And natural cooling is performed after heating to a set terminal point, the plugging effect is evaluated in real time through iconography measurement, and compensation heating or model replacement is performed according to actual differences to ensure the plugging effect.

The invention discloses aerogel thermal-insulation waterproof mortar and a preparation method thereof. The mortar is prepared from cement, hydrophobic aerogel, interface modified asphalt rubber powder, a composite phase change heat conduction material, blast furnace slag micro powder, silica fume, nano montmorillonite, titanium dioxide aerogel powder, expanded vermiculite, shape memory polymer emulsion, chitosan, charcoal powder, carbon fibers, basalt fibers and the like. The preparation method comprises the following steps: carrying out plasma treatment and modification with an organosilicon waterproofing agent to obtain hydrophobic aerogel; carrying out interface modification on the asphalt rubber powder by adopting a titanate coupling agent; a phase change microcapsule-carbon nanotube heat conduction network is constructed through ball milling compounding; a basic framework is formed by adopting a graded mixing process, and then functional components are introduced; and finally, realizing cross-linking curing of the shape memory polymer and the chitosan through ultrasonic assistance and programmed temperature control. The mortar prepared by the invention realizes integration of multiple functions, and effectively solves the technical problems of single performance and poor durability of a traditional thermal insulation material.

The invention discloses a current collector base material with a high-temperature-resistant shape memory function and a preparation method of the current collector base material, and relates to the technical field of battery materials. The method specifically comprises the following steps: S1, uniformly mixing a PET material, a high-temperature-resistant material, a shape memory polymer and a functional additive to obtain a raw material; s2, blending and processing the raw materials to form a melt; extruding to form a thin film; pulling and stretching, cooling and shaping, rolling, and controlling and adjusting quality; a base film is obtained; s3, carrying out antistatic treatment on the base film to obtain a current collector base material; compared with a conventional base membrane, the composite phase change material base membrane shows more excellent performance in the aspects of elastic modulus, extension strength and elongation through a unique strengthening mechanism, a good synergistic effect and a multi-phase structure, and the performance characteristics enable the composite phase change material base membrane to have more advantages in numerous application scenes.

The invention discloses an anti-fouling easy-to-clean coating and a preparation method thereof, and relates to the technical field of coatings. The invention discloses an anti-fouling easy-to-clean coating. The coating comprises the following raw materials in parts by weight: 30-50 parts of polymethyl methacrylate, 10-15 parts of modified nano titanium dioxide, 20-30 parts of a fluorocarbon polymer, 3-8 parts of a silane coupling agent, 8-12 parts of nano zinc oxide, 5-10 parts of a plasticizer, 2-6 parts of a dispersant, 1-3 parts of a leveling agent, 4-8 parts of a cross-linking agent, 1-3 parts of an antioxidant, 3-7 parts of a modified cellulose derivative and 2-5 parts of an antibacterial agent. And 5-10 parts of a modified shape memory polymer microcapsule. The anti-fouling and easy-to-clean coating disclosed by the invention is high in anti-fouling property, and the fluorocarbon polymer and the modified nano titanium dioxide are cooperated, so that stains are difficult to attach and can be decomposed by photocatalysis; cleaning is easy, and stains can be easily removed due to the low surface; the water seepage resistance is good, and the special modified cellulose derivative effectively blocks moisture; the antibacterial effect is good, and various microorganisms can be inhibited; and the self-repairing capability is also achieved, recovery can be achieved after damage, the service life is greatly prolonged, and the material protection requirement is comprehensively met.

The invention discloses a resin-based aerogel heat-insulating coating and a process, and relates to the technical field of heat-insulating coatings. Comprising the following components in parts by mass: 60-90 parts of matrix resin, 15-25 parts of aerogel, 10-15 parts of a multi-stage flame retardant, 5-10 parts of modified montmorillonite, 5-8 parts of silicone rubber particles, 3-5 parts of chopped glass fibers, 2-4 parts of nano silicon dioxide, 1-3 parts of shape memory polymer particles, 1-2 parts of self-repairing microcapsules and 2.5-5 parts of other auxiliaries. According to the resin-based aerogel heat-insulating coating and the process, efficient synergistic flame retardance is achieved by introducing a multi-stage flame retardant, the flame retardance, the crack propagation resistance and the self-repairing function of the coating are remarkably improved by combining the shape memory polymer particles and a self-repairing microcapsule technology, meanwhile, a matrix resin formula and a filler dispersion process are optimized, and the heat-insulating performance of the coating is improved. The problem that a traditional aerogel heat insulation coating is prone to cracking and stripping in complex deformation and vibration environments is effectively solved, and therefore the overall heat insulation efficiency is improved, and the service life is prolonged.

The invention relates to a 4D printing bionic artificial limb and a preparation method and application thereof, and relates to the technical field of medical rehabilitation instruments, the bionic artificial limb comprises a bionic skeleton and a flexible driving unit; the flexible driving unit is located at a joint moving part of the bionic skeleton and is used for driving the bionic skeleton to move; the bionic artificial limb is integrally formed through 4D printing, the bionic skeleton is made of a shape memory composite material, and the flexible driving unit is made of a hydrogel driving material; the shape memory composite material comprises a shape memory polymer and a reinforcing material in a mass ratio of (80-95%): (5-20%); the hydrogel driving material comprises a thermo-sensitive polymer matrix, a stabilizer and a functional filler in a mass ratio of (50%-80%): (20%-40%): (3%-15%). The 4D printing bionic artificial limb has the dynamic adjusting capacity, and the change requirements of the residual limb under different conditions can be met.

An embodiment includes a system comprising: a backbone; a first polyurethane shape memory polymer (SMP) foam on the backbone; a second polyurethane SMP foam on the backbone; a third polyurethane SMP foam on the backbone and between the first and second SMP foams. Other embodiments are described herein.

The present invention discloses an environmentally friendly asphalt pavement structure with high anti-skid performance, which includes a base layer, an intermediate functional layer, and a surface layer laid sequentially from bottom to top; wherein the surface layer includes fiber-modified waste asphalt, shape memory polymer chemically modified waste asphalt, matrix asphalt, and additives compounded in proportion. The asphalt pavement structure of the present invention not only significantly improves the anti-skid performance of the pavement, but also enhances the wear resistance and durability of the pavement. It has excellent thermal insulation, noise reduction, and drainage properties, while ensuring good construction performance and environmental adaptability. The overall comprehensive performance is superior and can meet the long-term durability and stability requirements under different climatic conditions and traffic flows. The present invention also discloses a construction method for an environmentally friendly asphalt pavement structure with high anti-skid performance.

The invention discloses a gradient vulcanization preparation method of a rubber sealing strip for an automobile, and relates to the technical field of automobile part manufacturing. The multi-layer structure blank comprises a functional outer layer, a first composite layer of a high-melting-point phase change material and an electrogenerated shape memory polymer, a second composite layer of a low-melting-point phase change material and a thermogenerated shape memory polymer, a core layer containing an induction medium and a functional inner layer. Through step-by-step control of core layer pilot vulcanization and outer layer synergistic vulcanization and in combination with directional infrared energy supplementation, the contradiction between insufficient corner vulcanization and overheating degradation of the core layer is solved, and the overall vulcanization uniformity of the product is ensured. By means of the synergistic effect of the shape memory polymer and the phase change material, gradient pulse cooling and post-treatment shaping are matched, vulcanization internal stress is effectively released, the product straightness and size stability are remarkably improved, and the deformation risk is reduced.

The invention discloses an intra-spinal anesthesia catheter device with a temperature compensation function, and relates to the technical field of medical instruments. The intra-spinal anesthesia catheter device comprises an anesthesia catheter body, the anesthesia catheter body comprises a thermoplastic elastomer and a shape memory polymer, and the thermoplastic elastomer wraps the outer side of the shape memory polymer. The intraspinal anesthesia catheter has the beneficial effects that through combination of an innovative intelligent material system and an active closed-loop control technology, the traditional contradiction that the rigid requirement and the soft safety of the catheter cannot be achieved at the same time in intraspinal anesthesia is fundamentally solved. The method has the primary advantage that the dynamic programmable adjustment of the mechanical property of the catheter is realized.

A left atrial appendage closure (LAAC) device may be adapted for occluding a patient's left atrial appendage (LAA). The LAAC device includes a shape memory polymer foam body that is adapted to expand from a crimped configuration for delivery to an expanded configuration after delivery. The shape memory polymer foam body. An adhesive layer is disposed relative to the shape memory polymer foam body.

This invention provides a temperature-resistant shape memory polymer plugging agent, its preparation method, and its application, belonging to the field of oil and gas drilling technology. The preparation method of this plugging agent includes the following steps: mixing acetic acid and perchloric acid to obtain a mixed acid, then adding bromate, potassium permanganate, and natural flake graphite, and stirring to obtain low-temperature expanded graphite; mixing cyanate ester, linear aliphatic epoxy resin, and an active diluent, then adding low-temperature expanded graphite, organotin compounds, and amine catalysts, and carrying out a curing reaction to obtain a temperature-resistant shape memory polymer material; testing the glass transition temperature (Tg) of the synthesized temperature-resistant shape memory polymer material, compressing it at (Tg+5)~(Tg+10)℃, and then cooling, pulverizing, and granulating to obtain the final product. The plugging agent of this invention can rapidly recover its original shape at high temperatures, accumulate and seal leakage channels, and form a high-strength sealing layer in fractures, meeting the requirements of safe and efficient drilling.

In one aspect of the present disclosure, devices and methods of treating a vascular anastomosis is disclosed. In one embodiment, the method comprises the steps of: (a) determining the outer diameter of a first vessel to be surgically coupled to a second vessel creating a vascular anastomosis; (b) determining the outer diameter of the second vessel; (c) selecting a perivascular wrap from a plurality of differently sized perivascular wraps such that the perivascular wrap fits around the vascular anastomosis with a constriction of the first vessel of less than 30%; wherein the perivascular wrap includes a shape memory polymer and has at least a first end, a second end, and a medial region; (d) positioning the perivascular wrap onto the first vessel via the first end prior to construction of the vascular anastomosis; (e) coupling the first vessel and the second vessel constructing the vascular anastomosis; and (f) molding the perivascular wrap from a first shape to a second shape wherein the second shape conforms to the geometry of the vascular anastomosis such that the perivascular wrap provides artery-mimetic support to the vascular anastomosis in the range of 0.1-2.0 MPa.

A method includes disposing a device into a borehole in proximity to a subterranean formation where a filter cake has been formed adjacent thereto, the device comprising a support structure and a shap

The present invention relates to the field of textiles, in particular shape-memory polymeric fibers (SMPF) for textile applications or medical applications where shape fixity and recovery can be kept constant over multiple shape-memory cycles. The present invention relates to a covered shape-memory polymeric fiber (cSMPF) (1) having a core fiber (10) comprising a shape-memory polymer fiber and a substantially unstretchable covering yarn (20) wound around the core fiber (10) in a manner that the maximum engineering strain (εmax) of the core shape-memory fiber is reduced to at most the strain at the yield point (εyield) of the uncovered core fiber (10) thus limiting the stretchability or deformation of the core shape-memory fibers and / or textiles and / or fabrics comprising a covered shape-memory fiber during programming or use so as to ensure maximum recoverable strain. Also disclosed is a process for producing a covered shape-memory polymeric fiber (cSMPF) (1), a shape-memory fiber and a shape-memory textile comprising a covered shape-memory polymeric fiber (cSMPF).

The invention relates to the technical field of damping structures, and discloses a shape memory polymer filled multistable negative Poisson's ratio structure damper which comprises a plurality of multistable structure shells which are of a bilateral symmetry structure and made of negative Poisson's ratio materials, cavities are defined in the multistable structure shells, and the multistable structure shells are arranged in an array mode; the shape memory polymer is arranged in the cavity, and the shape memory polymer is made of a shape memory negative Poisson's ratio polymer. The cavity is formed in the multi-stable-state structure shell, the cavity is filled with the shape memory polymer made of the shape memory negative Poisson's ratio polymer, the overall strength and rigidity of the structure can be improved while the negative Poisson's ratio characteristic is kept, and therefore the application range of the negative Poisson's ratio material in the vibration reduction field is expanded. The addition of the shape memory polymer is beneficial to improving the deformation capacity of the whole structure during bearing, and meanwhile, the structure can be recovered to the initial shape after being unloaded based on the recovery capacity of the shape memory polymer.