669results about How to "Excellent self-healing performance" patented technology

The invention provides a self-repairing polymer electrolyte matrix and a preparation method thereof, a self-repairing polymer electrolyte, a lithium ion battery and an application thereof, which belong to the technical field of self-repairing polymer electrolytes. The invention provides the self-repairing polymer electrolyte. The self-repairing polymer electrolyte matrix comprises an inorganic nano-additive, self-repairing polyurethane and other polymers, wherein the inorganic nano-additive and the other polymers are grafted on the self-repairing polyurethane; and the self-repairing polyurethane is obtained by a Diels- Alder reaction. The reversible action of a furan-maleimide structure in the self-repairing polyurethane endows the self-repairing polymer electrolyte matrix with good self-repairing ability; the polymer electrolyte endows the self-repairing polymer electrolyte matrix with good ionic conductivity; the inorganic nano-additive provides active sites, so that the polymers areprone to form a three-dimensional crosslinked structure, therebt further improving the ionic conductivity.

The low temperature quick aluminizing agent specially for petroleum pipe and casing consists of metal source, activator, catalyst and stuffing. The metal source consists of 150-mesh Al powder in 10-20 wt% of the aluminizing agent, 120-mesh Zn powder in 10-25 wt%, 150-mesh Zn-Fe alloy powder in 10-20 wt% and/or 150-mesh Fe-Al alloy powder in 10-15 wt%. The activator consists of ammonium chloride, aluminum chloride, sodium fluoride and/or potassium bifluoride. The catalyst consists of 100-mesh Mo powder in 0-3 wt% and La and Os 0-3 wt%, with La and Os in the weight ratio of 1 to 1. The stuffing is 100-mesh alumina powder. The aluminizing agent is applied at 380-500 deg.c to obtain aluminized layer.

The invention relates to a high-strength self-repair hydrogel preparation method, which comprises: 1, preparing a polyvinyl alcohol, agar and acrylic acid composite solution; and 2, preparing a high-strength self-repair three-network hydrogel. According to the present invention, the high-strength hydrogel is prepared by using the one-pot method through polymerization, cooling and freezing-thaw cycle, wherein the three polymers provide the effects of hydrogen bonding and macromolecular entanglement so as to make the hydrogel have high mechanical strength; during the preparation, iron ions are added, and can form the good coordination effect with the carboxyl group of the polyacrylic acid, such that the hydrogel has good self-repair property; the prepared polyacrylic acid/agar/polyvinyl alcohol three-network hydrogel has advantages of high mechanical strength and good self-repair performance, simple preparation process, wide raw material source, low cost and environmental protection, andcan be used as tissue engineering, scaffold repair materials, agricultural sensors and the like, and can be widely used in biomedical materials, agricultural materials and other fields.

The invention relates to a self-repairing and force-response polyurethane material and a preparation method and applications thereof, belonging to the field of polymer materials. The self-repairing and force-response polyurethane material is prepared from the following raw materials: diisocyanate, polyester polyol or polyether polyol, a diamine/diol chain extender and a metal salt cross-linking agent. A novel ligand is adopted as a chain extender preparation material, so that the cost is low, the preparation technology is simple, and large-scale production is easy; the prepared material has excellent performance, higher tensile strength and elongation at break, and excellent self-repairing performance; and the repairing conditions of the material are very mild, the material has the function of inducting external action force, and the fluorescence performance of the material can be changed under the action of force.

The invention discloses a nanometer colloid particle-assembled high-strength self-repairing injectable composite colloid gel material and a preparation method and application thereof. According to the preparation method, two-phase colloid particles with opposite electric charges are uniformly blended in an alkaline or acidic environment, an acidifying agent or alkalizing agent is added to induce the pH of the solution to recover the neutrality, electrostatic self-assembly among the two-phase colloid particles is initiated, and a uniformly-dispersed composite gel network is formed, wherein the gel is high in mechanical strength and wide in regulation and control range, the elasticity modulus of the gel can be regulated and controlled within the range of 10 Pa-100 kPa, and the self-repairing efficiency of the gel is higher than or equal to 100%. The silicon dioxide-gelatin composite colloid gel which has both the high mechanical strength and the self-repairing performance is finally and successfully prepared, and it is verified that the composite gel still can quickly recover the mechanical strength after being broken by shear force many times; in addition, the composite gel has the excellent injectable property and plasticity and can be used for an in-vitro cell culture matrix material by serving as an injectable biological material.

The invention discloses a preparation method for polyaniline-based self-repairing conductive hydrogel and belongs to the technical field of a high polymer material. The method is characterized in that polyaniline is used as a conductive high polymer material, and polymethylacrylamide is modified by a functional group dopamine and is endowed with a self-repairing property. The method comprises the following steps: firstly, modifying methacrylamide (DMA) with functional monomer dopamine, and performing photopolymerization, thereby preparing a series of hydrogel in different DMA contents; and adding aniline for performing in situ polymerization, thereby obtaining the self-repairing conductive hydrogel. The polyaniline hydrogel provided by the invention has a better self-repairing property and conductivity, and the property can be controlled by regulating the DMA content. The self-repairing conductive hydrogel prepared according to the invention is expected to be applied to a flexible super-capacitor with a self-repairing property.

The invention relates to a high-heat-resistance non-cured asphalt waterproof coating and a preparation method thereof and belongs to the technical field of waterproof coating. The high-heat-resistance non-cured asphalt waterproof coating mainly comprises: 150-220 parts of asphalt, 30-55 parts of softening oil, 0-20 parts of rubber, 0-12 parts of rosin resin, 0-15 parts of rubber powder, 0-14 parts of a plasticizer, 2-10 parts of oxidized polyethylene wax, 60-150 parts of a filler and 0-10 parts of a defoaming agent. The non-cured asphalt waterproof coating has the advantages that the heat-resistant temperature can reach 90 DEG C, the adhesive performance is good, the waterproof performance is excellent, the construction temperature range is wide, and cracks in the waterproof base can be automatically repaired. The coating can be used alone and can be also used in combination with asphalt rolled waterproof materials.

The invention discloses a preparation method of 3D printable iron ion double-crosslinked alginate-polyacrylamide acrylic acid high-performance hydrogel. The method comprises the following steps: firstly, evenly mixing sodium alginate, acrylamide, acrylic acid and a photo-initiator; pre-molding by using a mould or a 3D printing way; illuminating by using an ultraviolet lamp so as to realize copolymerization between an AAc monomer and an AM monomer; after the polymerization is completed, soaking a hydrogel scaffold into an Fe3<+> solution to form ionic cross-linking; finally, soaking the productinto deionized water for balancing so as to remove the unreacted monomers. Two networks are both Fe3<+> cross-linked, so that a common cross-linking point exists between the two networks, and the hydrogel is enabled to have excellent performance. In addition, the sodium alginate has good natural high polymer with good biocompatibility, and the viscosity is adjusted by adding a small amount of adhesive in a sol state, so that the hydrogel has good anti-collapse and rapid gelation characteristics; the hydrogel can be prepared into high porosity hydrogel with various complex structures by usinga 3D printing technology.

The invention relates to an amphoteric gel polymer electrolyte with good performance and preparation and application thereof. A series of zwitterionic gel electrolytes are prepared in the invention. An amphoteric gel electrolyte with high mechanical strength and a conductivity of 8.2 mScm-1 can be prepared by controlling the ratio of monomers and the concentration of lithium salt. The interfacialresistance between an electrode and the electrolyte is greatly reduced by immersing an AC electrode into a monomer solution for in-situ polymerization. The AC electrode with the in-situ polymerized electrolyte has a large area capacitance of 297mF cm-2 at a current density of 0.8 mA cm-2 and can remain 70% after 7000 cyclic tests. Remarkably, the combined solid capacitor not only have an area energy density up to 6.6 mWh cm-2 and a power density up to 2.4 W cm-2, but also have a good self-healing property. The work of the invention provides a new idea for the field of gel electrolytes, and obtains a zwitterionic gel electrolyte having great application potential in energy storage equipment.

The invention discloses a dynamic polymer with a hybrid cross-linked network structure. The dynamic polymer contains dynamic covalent bond crosslinking and supermolecular hydrogen bond crosslinking, wherein the dynamic covalent bond crosslinking is realized by associative exchangeable covalent bonds, and the supermolecular hydrogen bond crosslinking is realized by hydrogen bond groups on the sidegroups and/or side chains of a polymer chain framework and hydrogen bond groups on the optional chain frameworks. The polymer integrates dynamic characteristics of a supermolecule and dynamic covalentcharacteristics of glass-like matter; supermolecular hydrogen bonds give stimulative responsibility, energy dissipation performance and self-repairing performance to the material; the associative exchangeable covalent bonds give structural stability and mechanical strength to the covalent cross-linked polymer, and because the associative exchangeable covalent bonds have dynamic reversibility, thepolymer has self-repairing performance, recycling performance, reproducibility and the like. According to the invention, the dynamic polymer with the hybrid cross-linked network structure can be widely applied to vibration-absorptive cushioning materials, impact-resistant protective materials, self-repairing materials, toughness materials, sealing elements and the like.

The present invention relates to a kind of M/MO _x Composite hydrogen barrier coating, including stainless steel substrate and M/MO applied thereon _x Composite coating. The transition layer M in the composite coating is Al, zr, Er, Y, Cr, Mn, Fe metal, the hydrogen barrier coating MO _x It is the oxide of the transition layer metal. Composite hydrogen-resistant coatings are all prepared by reactive sputtering combined with negative bias technology, and can be a one-layer or multi-layer composite structure. The invention not only can effectively improve the binding force between the coating and the substrate, but also facilitates the improvement of the hydrogen resistance performance of the coating itself.

The invention provides a no-washing foam hand disinfection solution and a preparation method thereof, and belongs to the technical field of hand disinfection solutions. The no-washing foam hand disinfection solution comprises a surface active agent, a foam stabilizing agent, ethanol, a sterilizing agent, an emollient and essence and is prepared through a simple process. The no-washing foam hand disinfection solution provided by the invention is an ethanol-containing no-washing foam hand disinfection solution, is broad-spectrum, antibacterial, especially suitable for medical workers, patients or family members in a hospital and has the advantages of good disinfection effect, long-acting bacteria inhibition and skin-protecting effect.

The invention discloses a self-repairing solid-state hybrid dynamic polymer. The self-repairing solid-state hybrid dynamic polymer contains sulfydryl-Michael addition bond dynamic covalent crosslinking and supermolecular hydrogen bond interaction, wherein the sulfydryl-Michael addition bond dynamic covalent crosslinking reaches above a gel point in at least one crosslinking network; sulfydryl-Michael addition bonds are obtained through sulfydryl-Michael addition reaction between sulfydryl groups and electron-deficient conjugate alkenes/enynes; the supermolecular hydrogen bond interaction contains hydrogen bond interaction involving at least one from side hydrogen bond groups, backbone hydrogen bond groups and other end hydrogen bond groups; with dynamic reversibility, the sulfydryl-Michaeladdition bonds and the supermolecular hydrogen bonds endow the self-repairing solid-state hybrid dynamic polymer with good plasticity, self-repairability, repeatability, reusability and recoverability and ensure that the self-repairing solid-state hybrid dynamic polymer can be widely applied to self-repairing materials, flexible materials, shape memory materials, energy storage device materials and the like.

The invention provides a preparation method of self-repaired waterborne polyurethane. The preparation method comprises the following steps: after thermal dehydration of macromolecular dihydric alcohol, stirring with diisocyanate for a reaction to obtain a first prepolymer; reacting the first prepolymer with an organic solvent, a micromolecular glycol chain extender containing furan rings, a hydrophilic chain extender, an end-capping reagent and a catalyst to obtain a second prepolymer; neutralizing the second prepolymer with a neutralizer, then reacting with a diamine chain extender in deionized water, and after high-speed dispersed emulsification, carrying out vaccum solvent removal to obtain a waterborne polyurethane emulsion; mixing the waterborne polyurethane emulsion with a maleinimide cross-linking agent, and carrying out a heating reaction to obtain the self-repaired waterborne polyurethane. The self-repaired waterborne polyurethane prepared in the invention can show good mechanical properties and self-repair performance under specific structure conditions, is high in emulsion stability, green and environmentally-friendly, can realize self-repairing under a heating condition, does not need a catalyst, and is mild in condition, simple in operation and good in repair effect.

The invention discloses a ballastless track-structured waterproof vibration-reducing flexible protecting structure and a paving method thereof. A waterproof linking layer and a buffer protecting layer are paved between the bottom of a ballastless track foundation plate and the top surface of a surface layer/bridge deck slab of a roadbed in a full-width manner. According to the ballastless track-structured waterproof vibration-reducing flexible protecting structure, by virtue of the linking layer and the buffer protecting layer which are paved on the full fracture surface, the overall stereoscopic water proofing and the integrality are realized; by regulating the dynamic modulus, the damping characteristic and the deformation adaptability of an asphalt concrete protecting layer by virtue of a special modifying enhancer, the rigidity matching and buffer vibration reducing functions are realized; and by enhancing the load diffusivity, the fatigue durability and the water damage resistance of asphalt concrete by virtue of the special modifying enhancer, the problems of premature failure, interlayer slurry extruding, disengaging, even frost heaving and the like of waterproof layers of existing ballastless track roadbeds are effectively solved, the integrality, the smoothness, the uniformity and the long-term stability of a lower base structure of a track are improved, and good and stable support is provided for a ballastless track plate, so that the fatigue life of the track plate is prolonged. The ballastless track-structured waterproof vibration-reducing flexible protecting structure is a long-lasting protection scheme.