21results about How to "Strong intermolecular forces" patented technology

The invention relates to the technical field of batteries, in particular to a hydrogel adhesive, a preparation method thereof, a negative electrode and a battery. The invention discloses a hydrogel adhesive which comprises the following raw materials: a flexible hydrogel polymer, an alginate polymer and a self-healing polymer, and the weight ratio of the flexible hydrogel polymer to the alginate polymer to the self-healing polymer is (3.2-3.5): 1: (3.2-3.5). The hydrogel adhesive provided by the invention has a chain entanglement foam structure, can effectively solve the problem of expansion of a Si-based negative electrode, and improves the cycle life and cycle stability of a battery.

The invention relates to the technical field of UV curing resin, and discloses high-temperature-resistant UV curing resin and a preparation method thereof. The UV curing resin prepared by the invention is prepared from the following components in parts by weight: 20 to 30 parts of acrylic resin, 30 to 40 parts of urethane acrylate, 15 to 25 parts of modified acrylic resin, 4 to 8 parts of trimethylolpropane triacrylate, 3 to 10 parts of reinforcing filler, 2 to 3 parts of photoinitiator, 0.3 to 0.5 part of defoaming agent and 0.5 to 1 part of flatting agent. The coating is prepared by taking acrylic resin, polyurethane acrylic resin and modified acrylic resin as base resin, adding a reinforcing filler, a functional additive and the like, and stirring and mixing, wherein the reinforcing filler is added, so that the high temperature resistance and the mechanical property of the matrix are improved; the modified acrylic resin is added, so that the wettability of the matrix is improved, and the adhesive force of the matrix is further improved. Therefore, the UV-cured resin can be widely applied to the fields of coatings, printing ink, adhesives and the like.

The invention provides composite aramid paper and a preparation method thereof. The preparation method comprises the following steps: preparation of a heterocyclic aramid stock solution: mixing p-phenylenediamine, a diamine monomer containing a heterocyclic structure and terephthaloyl chloride in a solvent for polymerization to obtain the heterocyclic aramid stock solution; preparing heterocyclic aramid nanofibers: diluting the heterocyclic aramid stock solution with a solvent, mixing the diluted heterocyclic aramid stock solution with a poor solvent, stirring, shearing, dispersing, and cleaning to obtain the heterocyclic aramid nanofibers; preparation of mixed slurry: mixing and pulping para-aramid and the heterocyclic aramid nanofiber to obtain the mixed slurry; and papermaking of the composite aramid paper: performing papermaking on the mixed pulp to obtain the composite aramid paper. And papermaking of the composite aramid paper: performing papermaking on the mixed pulp to obtain the composite aramid paper. According to the method, the heterocyclic aramid nanofiber is introduced into the para-aramid paper, so that the interface bonding problem of the para-aramid paper can be improved, and the internal bonding strength, the mechanical property and the electrical insulating property of the para-aramid paper are improved.

The invention discloses high-nitrogen-doped layered porous waxberry kernel-based activated carbon and a preparation method and application thereof.The preparation method of the activated carbon comprises the steps that waxberry kernels are washed with water, dried, crushed into particles, screened, soaked in a nitric acid solution for pretreatment, washed and dried to obtain a pre-oxidized precursor, then the pre-oxidized precursor is mixed with a nitrogen source and a potassium activating agent, and the high-nitrogen-doped layered porous waxberry kernel-based activated carbon is obtained. The preparation method comprises the following steps: firstly, preparing a one-step impregnated nitrogen-doped carbon precursor, heating, stirring and drying in deionized water to obtain the one-step impregnated nitrogen-doped carbon precursor, then calcining and activating in a mixed atmosphere of nitrogen and ammonia gas, finally soaking in a hydrochloric acid solution, washing, filtering, drying and screening to obtain the final finished product nitrogen-doped layered porous activated carbon. According to the activated carbon, the waxberry kernels serve as raw materials, urea and ammonia gas serve as nitrogen sources, KHCO3 serves as an activating agent, the activated carbon is heated, stirred and reacted in water and then calcined and activated, high-temperature activation and synergistic nitrogen doping are achieved, and compared with a traditional nitrogen doping mode, the activated carbon is higher in nitrogen doping rate, richer in specific surface area and pore structure and obvious in performance advantage.

The invention discloses a lithium iron phosphate positive electrode material as well as a preparation method and application thereof. The lithium iron phosphate positive electrode material comprises a lithium iron phosphate matrix (LFP) and a coating layer coated on the surface of the lithium iron phosphate matrix, wherein the coating layer contains aromatic polyamide and carbon. The lithium iron phosphate positive electrode material can improve the electrochemical performance of LFP at low temperature, and improve the low-temperature cycling stability and capacity retention ratio of the battery.

The invention relates to a novel high Abbe number 1.56 acrylic lens, which is characterized in that monomers for synthesizing a lens material contain modified methyl methacrylate, an acrylate monomer with hydroxyl, a polymethacrylate monomer and high refractive index epoxy resin, the modified methyl methacrylate is obtained by polyaddition reaction of methyl methacrylate, methacrylic acid and allyl methacrylate, and the mass ratio of methyl methacrylate, methacrylic acid and allyl methacrylate is (15-20): (3-5): (5-10). The abbe number, the hardness, the visible light transmittance, the impact resistance, the thermal stability, the ultraviolet aging resistance, the curvature stability and other properties of the lens are effectively improved.

This invention discloses a tensile-strength steel-cored aluminum stranded wire, relating to the technical field of steel-cored aluminum stranded wire. The tensile-strength steel-cored aluminum stranded wire of this invention comprises at least: a steel core; a Zn-Ni-WC composite coating, electroplated on the steel core; aluminum strands, stranded on the steel core coated with the Zn-Ni-WC composite coating; and an anti-corrosion coating applied to the stranded aluminum strands. The anti-corrosion coating comprises the following raw materials in parts by weight: 60-70 parts of long-chain modified polyurethane acrylate prepolymer; 25-30 parts of acrylate isoborneol ester; 15-20 parts of dopamine-modified sustained-release microcapsules; 2-5 parts of photoinitiator; 0.5-1.5 parts of leveling agent; and 0.5-1.5 parts of dispersant. This invention, by setting a Zn-Ni-WC composite coating on the steel core and an anti-corrosion coating on the steel-cored aluminum strands, enables the prepared tensile-strength steel-cored aluminum stranded wire to possess superior corrosion resistance and ultra-long-term tensile strength retention.

The invention discloses an organic association molecule / polyetherimide energy storage composite dielectric film as well as a preparation method and application thereof, and belongs to an energy storage dielectric material as well as a preparation method and application thereof. The invention aims to solve the problems of poor insulation property, high conductivity loss and low energy storage density of the existing polyetherimide-based energy storage composite medium. The invention relates to an organic association molecule / polyetherimide energy storage composite dielectric film which is formed by compounding organic association molecules and polyetherimide, the organic association molecule is formed by associating an electron-repelling small organic molecule and an electrophilic small organic molecule through a non-covalent bond; the organic molecule associated filler has strong intermolecular acting force, and can form more delocalized structures, thereby enhancing the electron capture effect and avoiding charge accumulation through strong scattering effect. The organic association molecule / polyetherimide energy storage composite dielectric film is used as an energy storage material of a pulse capacitor or used for a pulse energy storage device under the condition of electrothermal field coupling.

The invention discloses sec-ethyl phosphate as well as a preparation method and application thereof, and belongs to the technical field of synthesis of flame retardants. Tri (2-ethoxyl) isocyanurate, phosphorus oxychloride and an alcohol compound are used as raw materials, the cyan phosphate is prepared through three-step reaction of preparing phosphoryl chloride diester, refining the phosphoryl chloride diester and synthesizing the cyan phosphate, the molecular structure contains a phosphate group and a triazine ring conjugated structure, and a carbon source, a gas source and an acid source are integrated. The thermal decomposition temperature of the sec phosphate is greater than or equal to 320 DEG C, the UL94V-0 level flame retardant standard can be reached by adding 12%-15% of sec phosphate into a high polymer material, and the sec phosphate has the characteristics of high flame retardant efficiency, good compatibility, strong migration resistance, excellent thermal stability, environmental protection and low toxicity; the synthetic preparation method is stable in process, easy in condition control and high in product purity, can be widely applied to flame-retardant modification of high polymer materials such as polyvinyl chloride, polyurethane and epoxy resin, and has important industrial application value.

The invention relates to a preparation method of a high-abbe-number modified acrylate optical material, which is characterized in that monomers for synthesizing the optical material contain modified methyl methacrylate, an acrylate monomer with hydroxyl, a polymethacrylate monomer and high-refractive-index epoxy resin, the modified methyl methacrylate is obtained by polyaddition reaction of methyl methacrylate, methacrylic acid and allyl methacrylate, and the mass ratio of methyl methacrylate, methacrylic acid and allyl methacrylate is (15-20): (3-5): (5-10). The abbe number, the hardness, the visible light transmittance, the impact resistance, the thermal stability, the ultraviolet aging resistance, the curvature stability and other properties of the optical material prepared by the method are effectively improved. The preparation method is simple in procedure, safe and controllable, no waste is discharged in the preparation process, and the green and environment-friendly industrial production requirement can be met.

The application provides a low-temperature laminated co-extrusion adhesive film and a preparation method and a photovoltaic module, and relates to the technical field of photovoltaic devices.The low-temperature laminated co-extrusion adhesive film comprises a laminated EVA film layer and a TPO film layer, and the EVA film layer and the TPO film layer are fused at the interface part; the content of vinyl acetate in the EVA film layer is 15-40%, and the crosslinking degree of EVA is not less than 65%; the raw material for forming the TPO film layer comprises an ethylene-alpha olefin copolymer; the melt index of the ethylene-alpha olefin copolymer is 0.5-10 g / 10 min, and the melting point is 50-115 DEG C; the light transmittance of the low-temperature laminated co-extrusion adhesive film for light with a wavelength of 380-1100 nm is greater than 88%. The low-temperature laminated co-extrusion adhesive film provided by the application not only can realize low-temperature crosslinking, but also has high bonding performance with a base material and long-term anti-creep performance.

The invention relates to the technical field of dispersing agents, and discloses a preparation method of a dispersing agent for resin-free color paste.The preparation method comprises the steps that malonyl chloride and 5-hydroxyisophthalaldehyde are subjected to a reaction, and a tetraaldehyde compound is obtained; the preparation method comprises the following steps: carrying out a reaction with N, N-dimethylglycine, then reacting with single amino-terminated polyethylene glycol, and finally reacting with N, N-dimethylglycine to obtain the dispersant for the resin-free color paste. The dispersant contains a plurality of organic amine anchoring groups of tertiary amines and imino groups, has relatively strong intermolecular force with pigments such as phthalocyanine blue, can be well adsorbed on the surfaces of the pigments, and contains a hydrophilic multi-arm polyethylene glycol molecular chain, so that the dispersion is more uniform and more uniform. A strong hydrophilic effect and a steric hindrance effect are formed on the surface of the pigment, dispersion and aggregation of the pigment are remarkably inhibited, so that the particle size of the pigment is reduced, sedimentation occurs due to overlarge surface particle size, and the pigment shows good dispersity in water and has good centrifugal stability.

The invention relates to the technical field of batteries, in particular to a solid-state electrolyte membrane and a preparation method thereof, a solid-state battery and an electric device. The solid electrolyte membrane provided by the invention comprises a lithium-containing solid electrolyte and a composite binder in a mass ratio of (99.2-99.9): (0.1-0.8), the composite binder comprises a first binder and a second binder; the first binder comprises polytetrafluoroethylene; the second binder comprises polyimide, and the polyimide has a structural unit as shown in a formula (I). Wherein each R1 is independently a single bond,-O-,-C (= O)-, an ester group, # imgabs 0 #, # imgabs 1 # or # imgabs 2 #; and L1, L2 and L3 are each independently an arylene group with a carbon atom number of 6 to 12. A ring is selected from a structure shown in a formula (A-1) to a formula (A-6), and R2 is independently H, halogen, alkyl with the carbon atom number of 1-8 or halogenated alkyl with the carbon atom number of 1-8 when appearing each time; m is a positive integer greater than or equal to 1.

The invention discloses a method for reducing the odor grade of a polyolefin resin material through post-treatment, which mainly comprises the following steps of: preparing cocamidopropyl betaine, alkyl glycoside and water into a carrying agent, and removing odor small molecular substances in the polyolefin resin material through a supercritical CO2 extraction technology, so as to prepare low-odor low-VOC (Volatile Organic Compounds) polyolefin. The method disclosed by the invention can be used for removing the odor of various polyolefin finished product raw materials and effectively improving the quality of the polyolefin finished product, so that the method has relatively high economic value and popularization value.

This invention belongs to the field of membrane material technology, and particularly relates to a six-membered ring polyimide copolymer separation membrane, its preparation method, and its applications. This invention utilizes naphthalene dianhydride copolymerized with rigid diamine monomers such as BAPF and TrMPD. The rigid structure of the naphthalene ring and fluorene ring on the main chain, with their high electron cloud density, improves the gas separation performance of the polymer membrane. The six-membered ring polyimide obtained through this method exhibits excellent gas separation performance for CO2. 2 / N 2 The separation effect of the mixed gas is better than the test results in the pure gas, indicating its broad application prospects in the field of exhaust gas treatment.

The invention relates to the technical field of photosensitive polymer synthesis, and discloses a photosensitive monomer, photosensitive polyurethane and a preparation method and application thereof. The photosensitive monomer is prepared by reacting 5-hydroxy-2-nitrobenzaldehyde with a compound M and a compound N capable of accepting external electron pairs in a first polar solvent. The photosensitive monomer has high cross-linking activity, can be subjected to efficient polycondensation with isocyanate and the like to synthesize a polyurethane holographic high polymer material, and can endow the material with physical cross-linking photoisomerization performance, a pyridine structure generated under ultraviolet irradiation can form intermolecular hydrogen bonds with a hydrogen-containing structure in a molecular chain, reversible cross-linking is achieved, and the photoisomerization performance is improved. And complexation with metal ions can be realized. According to the photosensitive monomer, the selection range of the photosensitive monomer required by production of a holographic high polymer material can be widened, and the development of holography is effectively promoted. The photosensitive monomer synthesis process is simple, the yield is high, the product is easy to separate, the controllability is high, and low-cost continuous production can be realized.

The invention discloses pentaerythritol tetra (6-naphthyl hexanoic acid) ester and a preparation method and application thereof, the preparation method adopts two-step reaction of alkylation and esterification, the first step is that naphthalene and 5-hexenoic acid are subjected to alkylation reaction to generate 6-(1-naphthyl) hexanoic acid; and 2, carrying out a reaction on the 6-(1-naphthyl) hexanoic acid and thionyl chloride, and carrying out an esterification reaction with pentaerythritol to finally obtain the oily pentaerythritol tetra (6-naphthyl hexanoic acid) ester. The prepared pentaerythritol tetra (6-naphthyl hexanoate) ester has a structure with a symmetric four-arm core, a flexible alkyl chain and a rigid naphthalene end group, is shown as a formula (I), is used for lubrication and sealing of various equipment, and has the advantages of oxidation resistance, high and low temperature resistance, extreme pressure resistance, good lubrication and sealing performance and the like.

The invention belongs to the technical field of lithium ion batteries, and particularly relates to a lithium ion battery negative electrode bionic binder and a preparation method thereof, lithium ion battery negative electrode slurry and a negative electrode, and the binder is formed by free radical polymerization of a nucleic acid base acrylate monomer and an acrylic monomer in an aqueous solution; the nucleic acid base acrylate monomer is prepared by carrying out double-bond modification on a nucleic acid base, and the nucleic acid base comprises one of adenine, thymine, guanine, cytosine and uracil. The lithium ion battery negative electrode bionic binder with strong adhesive force in the electrolyte has excellent adhesion, can avoid cracking and powder falling phenomena of an electrode plate, can relieve internal stress generated by expansion of an active material, effectively inhibits electrode structure collapse caused by fragmentation of the active material, and improves the service life of the battery. The integrity of the electrode structure is maintained and the electrochemical stability of the lithium ion battery is improved.

The invention relates to a tungsten-copper composite material forming part and a preparation method thereof, and belongs to the technical field of metal composite materials. The raw materials of the forming part are composed of a tungsten source, a copper source and a forming agent. The tungsten source consists of modified tungsten powder and tungsten powder; the modified tungsten powder is obtained by adding a reinforcing phase and an activating element, wetting and adhesion of a tungsten phase and a copper phase can be promoted, the sintering performance of the formed part is improved, and the comprehensive performance of the formed part is improved; the forming agent is added to ensure that the powder has good flowability and formability, the problems that a large-size tungsten-copper blank is poor in compression molding formability and high in manufacturing cost are solved, and a tungsten-copper composite material formed part which is uniform in structural component, low in cost and easy to form is obtained. The preparation method comprises the following steps: dispersing an activating element and a reinforcing phase into tungsten powder through a ball milling method to obtain modified tungsten powder, adding double-granularity composite powder of the modified tungsten powder and unmodified tungsten powder into a forming agent to obtain easily-formed composite powder, and pressing the composite powder into a large-size tungsten copper green body, the method has the characteristics of low cost, good repeatability, controllable process, raw material saving and the like.

The invention relates to a template molecule of a multifunctional saponin compound molecularly imprinted polymer, the molecularly imprinted polymer and application of the molecularly imprinted polymer, and belongs to the technical field of plant component refining. According to the molecularly imprinted polymer disclosed by the invention, a virtual template molecule is used, and the template molecule contains a hydrogen bond donor and a relatively strong electronic effect; the natural saponin compound molecules of rhizoma anemarrhenae saponin AIII, rhizoma anemarrhenae saponin BII, rhizoma anemarrhenae saponin BIII, notoginsenoside R1, ginsenoside Rg1, ginsenoside Rg3, ginsenoside Rh2, tribulus terrestris saponin K, tribulus terrestris saponin D, platycodin D, liriope spicata saponin B, polyphyllin I, polyphyllin II and polyphyllin VI can be well adsorbed by the natural saponin compound molecules of the rhizoma anemarrhenae saponin BIII, the ginsenoside Rg1, the ginsenoside Rg3, the ginsenoside Rh2, the tribulus terrestris saponin D, the platycodin D, the liriope spicata saponin B, the polyphyllin I, the polyphyllin II and the polyphyllin VI. The virtual template molecule is low in cost and can be used for large-scale preparation of molecularly imprinted polymers, and the extraction cost of natural saponin compounds is remarkably reduced.

The invention belongs to the field of modification of high-performance fiber materials and preparation of specialty paper, and discloses a modified aramid fiber, high-strength, high-uniformity and high-water-absorption aramid paper and a preparation method and application of the modified aramid fiber and the high-strength, high-uniformity and high-water-absorption aramid paper. The modified aramid fiber comprises bacterial cellulose and aramid fiber in a mass ratio of (0.1-1.5): (2-15). The aramid paper is prepared from the following components in parts by weight: 2 to 16.5 parts of modified aramid fiber, 0.16 to 1.2 parts of hot melting fiber, 0.4 to 2 parts of surfactant and 0.01 to 0.1 part of dispersing agent. Hydrophilic groups on the surfaces of the aramid fibers are effectively increased by utilizing interaction between the bacterial cellulose and the aramid fibers, the prepared aramid paper is high in strength, and compared with aramid paper not modified by the bacterial cellulose, the tensile property is remarkably improved by 244%-1294%, and the tensile strength of the aramid paper is greatly improved. And meanwhile, good uniformity and greatly enhanced water absorption are shown. In addition, the aramid paper has excellent absorption capacity on silica sol, and the application prospect is extremely wide.