8results about How to "Good mechanical flexibility" patented technology

The invention discloses a force-induced discoloration elastic material based on a holographic photocuring technology and a preparation method. The force-induced discoloration elastic material comprises the following components in percentage by mass: 48%-90% of a polymer matrix, 0.3%-4% of a photo-initiation system and 6%-50% of a recording component, the polymer matrix comprises the following components in percentage by mass: 73%-89% of an acrylate monomer, 10%-25% of a thiol monomer and 0.5%-3% of a catalyst; the photo-initiation system comprises a photosensitizer and a co-initiator, and the dosages of the photosensitizer and the co-initiator respectively account for 0.05%-1% and 0.2%-3% of the total mass of the mechanochromic elastic material; the recording component comprises the following components in percentage by mass: 62%-85% of first fluorine-containing acrylate, 10%-35% of second fluorine-containing acrylate and 0-6% of a cross-linking agent. The mechanochromic elastic material has excellent mechanical properties and optical properties, can provide an important material basis for a new generation of intelligent flexible optical devices, and has a wide application prospect.

The invention discloses a microporous carbon-coated core-shell nano composite material, a preparation method and application, and relates to the technical field of lithium batteries, and the preparation method comprises the following steps: uniformly dispersing silicon powder and graphite in a solvent to form a core material suspension; dopamine hydrochloride and hydrogen peroxide are added into the nuclear material suspension, polymerization reaction is carried out at the temperature of 60-85 DEG C, composite slurry is obtained, and the ratio of the total mass of the silicon powder and the graphite to the mass of the dopamine hydrochloride is 1: (0.1-0.5); carrying out spray drying treatment on the composite slurry to obtain precursor powder; sintering the precursor powder at high temperature to obtain a microporous carbon coated core-shell nano composite material; the microporous carbon-coated silicon / graphite core-shell nano composite material is prepared by adopting a polydopamine in-situ polymerization technology initiated by hydrogen peroxide and combining a subsequent spray drying and carbonization process, and the material has good rate capability, cycling stability, charge-discharge efficiency and low interface impedance.

The invention discloses a core-shell nanofiber / MnO2 composite membrane material as well as a preparation method and application thereof, and belongs to the technical field of air purification materials. The preparation method comprises the following steps: respectively dispersing a carbon material and a high-molecular polymer in a solvent, and mixing and stirring to obtain a shell solution; dissolving polyurethane and a two-component cross-linking agent in a solvent to obtain a core layer solution; preparing a core-shell nanofiber membrane from the shell layer solution and the core layer solution through a core-shell electrostatic spinning device, and then carrying out heat treatment; polyvinylpyrrolidone is added into a KMnO4 solution, the pH is adjusted, then the core-shell nanofiber membrane subjected to heat treatment is added, a hydrothermal reaction is conducted, and the composite material is obtained. The invention also discloses the core-shell nanofiber / MnO2 composite membrane material prepared by the preparation method and application of the core-shell nanofiber / MnO2 composite membrane material. The core-shell nanofiber / MnO2 composite membrane material disclosed by the invention can solve the problems of large damage degree to a base material and short service life in the preparation process of the existing supported MnO2 composite membrane material, and has a wide application prospect.

This invention relates to the field of new materials technology, and more particularly to a polyaniline conductive ink and its preparation method, as well as the application of this ink in flexible electronic devices, especially micro supercapacitors. A polyaniline conductive ink comprises, by weight, 10-30 parts of conductive filler; 18-30 parts of binder; 32-69 parts of solvent; and 3-8 parts of additives; wherein the conductive filler is composed of graphite, carbon black, and polyaniline. The polyaniline conductive ink of this invention solves the problem that existing conductive inks struggle to simultaneously achieve high conductivity, excellent mechanical flexibility, and high energy storage capacity.

The invention discloses conductive ink based on high-entropy alloy aerogel and a preparation method and application of the conductive ink, and relates to the technical field of functional materials and printing electronics. Wherein the high-entropy alloy aerogel has a three-dimensional communicated nano porous structure, the specific surface area is 200-500m < 2 > / g, the density is lower than 0.05 g / cm < 3 >, and the average pore size is 10-200nm. By introducing a high-entropy alloy aerogel conductive skeleton with a three-dimensional nano porous structure, high conductivity, low-temperature sinterability and excellent mechanical flexibility of the conductive ink are achieved, and the problems that existing carbon-based and metal-based conductive ink is insufficient in conductivity, high in sintering temperature or poor in oxidation resistance and the like are solved.

This invention discloses a high-nitrogen-doped flexible porous carbon fiber membrane based on ammonia-activated flax, its preparation method, and its applications. Using biomass flax fabric as the carbon precursor, the membrane is first pre-carbonized at a programmed rate of 750-850℃ in an inert gas atmosphere, followed by activation treatment at 850-950℃ in a mixed atmosphere of ammonia and inert gas. This invention has the following advantages and effects: Through the aforementioned "Type IV" programmed ammonia activation strategy, this invention achieves simultaneous carbonization, activation, and nitrogen doping in a one-step process using biomass waste as raw material. The process is simple, green, and efficient.

The invention discloses a carbon cloth-based composite material, a preparation method and application in a supercapacitor, and belongs to the technical field of supercapacitor electrode materials, and the method comprises the following steps: dissolving nickel nitrate hexahydrate, copper nitrate pentahydrate and an organic ligand containing carboxyl and amino in N-methyl pyrrolidone, adjusting the pH value to 6.07.0, and stirring to form a uniform mixed solution; the preparation method comprises the following steps: carrying out ultrasonic and microwave synergistic activation on pretreated carbon cloth, immersing the carbon cloth in a mixed solution for gradient heating solvothermal reaction to obtain a flexible Ni-Cu bimetal MOF / carbon cloth composite material, immersing the flexible Ni-Cu bimetal MOF / carbon cloth composite material in a composite vulcanizing agent solution prepared from thioacetamide and potassium sulfide, and sequentially carrying out segmented water bath vulcanization and gradient calcination treatment to obtain the flexible Ni-Cu bimetal MOF / carbon cloth composite material. The carbon cloth-based composite material is obtained. The flexible core-shell porous sulfide / carbon cloth composite material with high specific surface area, high specific capacitance, excellent cycle stability and low internal resistance is prepared, the process is mild, the solvent can be recycled, and the composite material has good industrial economy and environmental friendliness.

The application belongs to the technical field of organic photovoltaic devices, and specifically discloses a kind of semi-transparent organic solar cell and its preparation method.The semi-transparent organic solar cell includes transparent substrate, bottom electrode, hole transport layer, organic active layer, composite top electrode and polymer optical adjustment layer arranged in sequence.The composite top electrode includes first inorganic oxide layer, metal nanowire conductive network layer and second inorganic oxide layer arranged in sequence;The first inorganic oxide layer is ZnO-PEI layer, which is arranged close to the organic active layer and serves as an electron transport layer;The second inorganic oxide layer is a pure ZnO layer;The polymer optical adjustment layer is placed on the second inorganic oxide layer of the composite top electrode;The refractive index of the polymer optical adjustment layer is lower than that of the electron transport layer;The material of the polymer optical adjustment layer is polymethyl methacrylate.