194 results about "Vinylsilane" patented technology

The invention belongs to the technical field of low-temperature HIB steel, and particularly relates to modified magnesium oxide and a preparation method and application thereof. The modified magnesium oxide provided by the invention comprises a magnesium oxide matrix as well as calcium oxide and vinyl silane which are adsorbed on the surface of the magnesium oxide matrix, the 40% CAA of the magnesium oxide matrix is 60-70 s, and the 70% CAA of the magnesium oxide matrix is 125-145 s. Calcium oxide is introduced into silicon steel grade magnesium oxide, so that the alkalinity of modified magnesium oxide is further improved; under the combined action of calcium oxide and vinyl silane, the reaction activity of modified magnesium oxide and silicon dioxide on the surface of a silicon steel sheet is improved, 70% CAA seconds are reduced under the condition that 40% CAA activity seconds are not changed, the synthesis capacity of a magnesium silicate bottom layer is improved, and the uniformity and surface quality of the magnesium silicate bottom layer synthesized by low-temperature HIB steel are improved; therefore, the properties of iron loss and magnetic induction intensity of the low-temperature HIB steel are ensured.

The present application relates to the technical field of aluminum electrolytic capacitors, and specifically discloses a low-temperature, medium- and high-voltage aluminum electrolytic capacitor. Among them, the electrolyte of the low-temperature, medium- and high-voltage aluminum electrolytic capacitor includes the following raw materials: a main solvent, a low-melting point co-solvent, a main solute, an auxiliary solute, a flash voltage enhancer, a hydrogen remover, and a waterproofing auxiliary agent. Among them, the flash voltage enhancer is modified nano-silica. The present invention uses a vinyl silane coupling agent to modify the surface of nano-silica, and then esterifies polyvinyl alcohol and allyl succinic anhydride to form allyl succinic anhydride-grafted polyvinyl alcohol, and effectively combines it with silanized nano-silica, so that the nano-silica particles can be evenly dispersed in the electrolyte to increase the flash voltage of the electrolyte, and by introducing a low-melting point co-solvent, the melting point of the electrolyte system can be effectively reduced, so that the capacitor can maintain low viscosity and good electrical properties in a low-temperature environment.

The invention relates to the technical field of chemical grouting materials, in particular to a preparation method suitable for nano-silica sol grouting under a high-temperature condition, and aims to solve the problems that an existing grouting material cannot be used at a high temperature, and the gel strength is low and the gel rate is uncontrollable when single silica sol is used at the high temperature. The invention provides a preparation method suitable for nano-silica sol grouting under a high-temperature condition, which comprises the following steps: step 1, carrying out surface modification on small-particle-size spherical nano-silica sol by using vinyl silane to graft carbon-carbon double bonds on the surface of the nano-silica sol to obtain modified nano-silica sol; step 2, adding a water-soluble vinyl monomer and an initiator into the modified nano silicon dioxide sol; and step 3, adding a proper amount of a gel accelerator, and enabling the system to be in an environment of 70-120 DEG C, so as to obtain the high-strength grouting material with controllable gelation time.

The invention belongs to the technical field of fabrics, and particularly relates to a graphene-based wear-resistant outdoor jacket fabric and a preparation method thereof. The graphene-based wear-resistant outdoor jacket fabric comprises base cloth and a wear-resistant layer on the surface of the base cloth, the base cloth comprises graphene polyamide fibers and polyester fibers; the wear-resistant layer comprises the following raw materials in parts by weight: 3-8 parts of a vinyl silane coupling agent modified wear-resistant agent, 1-4 parts of vinyl POSS, 1-5 parts of an emulsifier, 0.1-0.5 part of a photoinitiator and 100 parts of water; the wear-resistant agent comprises fluorinated graphene and cubic boron nitride. The wear-resistant outdoor jacket fabric provided by the invention has excellent wear resistance, water resistance and soaping resistance.

The invention relates to the technical field of waste asphalt regeneration, and particularly discloses nano microgel, a preparation method thereof and application of the nano microgel in repairing aged SBS modified asphalt. The nano microgel is prepared from the following raw materials in parts by weight: 33 to 44 parts of acrylic acid soft monomer, 3 to 4 parts of cross-linking agent, 1 to 2 parts of vinyl silane coupling agent, 1 to 2 parts of multifunctional epoxy monomer, 0.1 to 0.2 part of initiator, 0.3 to 0.5 part of terminating agent and 40 to 50 parts of solvent. The nano microgel provided by the invention can achieve a better repairing effect on the aged SBS modified asphalt in a conventional hot mixing mode or under a normal temperature condition, so that the regenerated SBS modified asphalt can achieve the initial pavement performance.

The invention relates to the technical field of preparation of cross-linking agents for rubber, in particular to a cross-linking agent, a preparation method of the cross-linking agent and application of the cross-linking agent in rubber preparation. The cross-linking agent is prepared through multi-stage structural design and functional modification and comprises the following steps: firstly, synthesizing a porous carrier by a template method, loading a divinyl benzene cross-linking agent after vinyl silane alkenylation modification, forming inner-layer packaging through Fe < 3 + >-tannic acid coordination, and performing surface functional modification by adopting 1, 9-decadiene to obtain the cross-linking agent. And finally, performing outer layer physical coating through low-melting-point paraffin. The cross-linking agent has a unique dual-threshold gating release characteristic, the outer paraffin provides physical protection at a mixing temperature, the inner coordination network is controllably dissociated at a vulcanization temperature, and on-demand release of cross-linking active components is realized. When the cross-linking agent is applied to rubber preparation, the uniformity of a cross-linking network can be remarkably improved, the cross-linking efficiency is improved, and the problems that a traditional cross-linking agent is easy to consume in advance, uneven in distribution and the like are solved.

The invention relates to the field of composite materials, and particularly discloses a bio-based silica gel material and a preparation method thereof.The preparation method comprises the following steps that S1, an alkylated castor oil derivative is prepared, specifically, castor oil and maleic anhydride serve as raw materials to react to generate castor oil-based polycarboxylic acid ester containing double bonds, then mixing and reacting with an amino silane coupling agent to prepare an alkylated castor oil derivative; s2, mixing the alkylated castor oil derivative prepared in the step S1 with vinyl silane, 4-hydroxy-3-methoxyphenylethylamine, hermetia illucens oil, a catalyst and a pretreatment filler, and carrying out a reaction to prepare a silane group; s3, hydrolytic polycondensation: adding water into the silane group prepared in the step S2, hydrolyzing under an acidic condition to generate a colloidal silica, and drying to obtain a silica gel material; the invention further discloses the bio-based silica gel material prepared by adopting the preparation method. The bio-based silica gel material has the characteristic of preparing the bio-based silica gel material with higher mechanical property and heat resistance.

The invention relates to the technical field of wire and cable insulating materials, and provides a room-temperature self-crosslinking flame-retardant insulating material and a preparation method thereof.The preparation method comprises the steps that a magnetic metal hydroxide flame retardant is prepared through a sol-gel method, and modified vinyl silane is prepared through a ring-opening polymerization reaction; the preparation method comprises the following steps: performing ordered grafting granulation on polyolefin resin, a magnetic metal hydroxide flame retardant and modified vinyl silane to prepare matrix granules; and blending the matrix granules with the catalytic granules, carrying out extrusion molding on the blended granules, and standing at room temperature to obtain the room-temperature self-crosslinking flame-retardant insulating material. According to the room-temperature self-crosslinking flame-retardant insulated cable and the preparation method thereof, the flame retardant property can be improved, the crosslinking efficiency and cost can be optimized, and the mechanical property and the insulating property can be optimized.

The invention relates to the field of adsorption materials, and discloses a lithium ion adsorbent and a preparation method and application thereof. The lithium ion adsorbent comprises a polyvinyl chloride molecular chain and a polymer molecular chain A, wherein the polymeric molecular chain A comprises a structural unit I from crown ether containing vinyl and a structural unit II from a vinyl silane modified lithium ion sieve. The vinyl silane modified lithium ion sieve in the lithium ion adsorbent can be connected with a polymer molecular chain through a chemical bond, so that the lithium ion sieve can be uniformly dispersed on a polymer skeleton, and the lithium ion adsorbent has excellent structural stability, high adsorption capacity and high magnesium-lithium selectivity; and the solution loss rate of the lithium ion sieve is obviously reduced.

The present invention relates to the field of new material technologies, and discloses a flame-retardant fabric, a preparation method thereof and an application thereof. The method includes: (1) performing a first contact reaction on diethylenetriamine, vinylsilane and epoxy group-containing silane to obtain diethylenetriamine-silane; (2) performing a first dilution of the diethylenetriamine-silane in solvent I, adjusting the pH to obtain a diethylenetriamine-silane solution, immersing the fabric in the diethylenetriamine-silane to perform a first immersion to obtain a flame-retardant treated fabric I; (3) performing a second contact reaction on tetrakis(hydroxymethyl)phosphonium sulfate, urea and water to obtain a pre-polymerized tetrakis(hydroxymethyl)phosphonium sulfate flame retardant; (4) immersing the flame-retardant treated fabric I in the pre-polymerized tetrakis(hydroxymethyl)phosphonium sulfate flame retardant to perform a second immersion to obtain a flame-retardant fabric. The flame-retardant fabric prepared by the method provided by the present invention has excellent flame-retardant effect, the method is simple and efficient, and there is no need for gas to participate in the reaction, the cost is low, and it is suitable for mass production.

The invention provides a dispersing agent and a preparation method and application thereof, and belongs to the technical field of lithium batteries, the preparation method of the dispersing agent comprises the following steps: taking a first monomer, a second monomer, a chain transfer agent and an initiator as raw materials, and carrying out polymerization reaction at 45-75 DEG C to obtain the dispersing agent, wherein the first monomer comprises one or more of diethyl methyl vinyl silane, methyl vinyl bis (N-methyl acetamido) silane and 3-(dimethylamino) methyl acrylate, and the second monomer comprises one or more of methacrylic acid, 3-ethoxyacrylic acid and 2-hydroxy-2-methyl-3-butenoic acid. The dispersing agent prepared in the invention has strong adsorbability and strong dispersibility, and can improve the dispersibility of small particles in the preparation process of the lithium iron phosphate positive electrode material, so that the prepared lithium iron phosphate particles have no obvious adhesion, the particle size distribution interval is increased, and the compaction density and electrochemical performance of the lithium iron phosphate positive electrode material are improved.

The invention relates to the technical field of ink, and discloses polyurethane water-based ink and a preparation method thereof.The polyurethane water-based ink is obtained by adding water-based polyurethane resin, quaternary phosphonium salt modified imidazole, quaternized polyurethane, water-based pigment, a thickening agent, a flatting agent, a defoaming agent and deionized water into a stirrer and stirring. A quaternary phosphonium salt group and an imidazole group in the quaternary phosphonium salt modified imidazole have a relatively good antibacterial effect. A quaternary ammonium salt group in quaternized polyurethane also has a better antibacterial effect, and di (dimethylamino) methyl vinyl silane and 2-chloroethanol are subjected to quaternization reaction, so that the substitution degree of quaternary ammonium salt is improved, and the antibacterial effect of the quaternary ammonium salt is further improved; and the polyurethane structure also has relatively good wear resistance.

The invention relates to the technical field of high polymer materials, and discloses a low-smoke halogen-free irradiation crosslinking polyolefin cable sheath material and a granulation process thereof, the raw materials comprise an ethylene-vinyl acetate copolymer, an ethylene-octylene copolymer, an epoxy group-containing terpolymer and functionalized composite powder, the powder system superfine aluminum hydroxide is subjected to high-temperature grafting through vinyl silane, after cooling, an active coating layer is constructed by zinc methacrylate, active magnesium oxide and a lubricant, and the process adopts matrix resin main feeding, powder side feeding and low-temperature low-shear extrusion, and is subjected to air-cooled die surface hot cutting and electron beam irradiation crosslinking forming. The covalent bond and ionic bond synergistic enhancement mechanism is utilized, the contradiction between mechanical property loss and processing rheological property deterioration is solved under the high filling amount of 137-160 parts, the active components are effectively prevented from being scorched in the early stage, and the material is endowed with excellent tensile strength, elongation at break and surface quality.

The invention belongs to the technical field of organic silicon coatings, and discloses an anti-aging organic silicon insulating waterproof coating as well as a preparation method and application thereof. The preparation method comprises the following steps: carrying out mixed reaction on a hydrogen-containing ring body and a vinyl silane coupling agent under the condition of a hydrosilylation catalyst to obtain a cyclosiloxane cross-linking agent; and uniformly mixing the obtained cyclosiloxane cross-linking agent with alpha, omega-dihydroxy polysiloxane, polydimethylsiloxane, a dialkoxy epoxy silane coupling agent, fumed silica, an antistatic agent, fluorine-containing silicon resin, a catalyst and solvent oil in a protective atmosphere to obtain the anti-aging organic silicon insulating waterproof coating. Compared with the conventional alkoxy silane cross-linking agent and ketoxime silane cross-linking agent, the specific cyclosiloxane cross-linking agent adopted by the invention can obviously improve the mechanical properties, weather resistance and storage stability of the obtained organic silicon coating.

This application is applicable to the field of material technology, and provides a composite phase change material, a preparation method thereof, a potting material, and an electronic device; the composite phase change material has a phase change microcapsule as the inner layer, and carbon nanotubes and silicon dioxide are sequentially coated on the surface layer of the phase change microcapsule, and is obtained by modification with a vinyl silane coupling agent. This application can take into account high thermal conductivity and high enthalpy value, without the need to be used in combination with thermal conductive powders, and improves the flammability defect of conventional organic phase change materials when used alone; in addition, the potting material prepared from this composite phase change material can take into account excellent properties such as high enthalpy value, high thermal conductivity, high fluidity, insulation, and flame retardancy; and this composite phase change material has good compatibility with the silicone matrix, will not cause phase separation, and can prevent sedimentation; its surface contains vinyl groups, which can participate in the silicone addition reaction during curing, and after curing, the phase change material and the silicone matrix form a quasi-3D network structure, and the composite thermal conductive phase change filler is more closely combined with the silicone matrix.

The invention relates to the technical field of high polymer materials, in particular to high-barrier modified polyethylene which comprises high-density polyethylene, vinyl silane, montmorillonite, alkali, an antioxidant, nano silicon dioxide, a polyolefin grafted compound, a plasticizer and a stabilizer. According to the invention, additives such as vinyl silane, modified montmorillonite and the like are introduced into high-density polyethylene, and an irradiation crosslinking process is adopted, so that the gas barrier property and the mechanical property of polyethylene are remarkably improved; through surface modification of the montmorillonite, the compatibility of the montmorillonite and a polyethylene matrix is improved, so that the polyethylene matrix is more uniform in microstructure, and the barrier effect is effectively enhanced; by adopting an irradiation crosslinking technology, not only is the barrier property of polyethylene improved, but also the heat resistance and the mechanical strength of the polyethylene are enhanced, so that the material can keep stable performance in a harsh environment; compared with a traditional modification method, the method has the advantages that the production process is simplified, and the dependence on chemical additives is reduced.

The invention discloses a high-strength antibacterial polypropylene staple fiber and a preparation method thereof. The polypropylene staple fiber comprises the following raw materials in parts by mass: 100 parts of polypropylene and 1-3.5 parts of modified nano titanium dioxide, the modified nano titanium dioxide comprises the following raw materials: nano titanium dioxide, a vinyl silane compound, double-end hydrogen-containing silicone oil and styrene in a mass ratio of 100: (3-5): (10-30): (2-5), and the double-end hydrogen-containing silicone oil has two silicon hydrogen end-capping groups; the nano titanium dioxide is subjected to surface treatment by a vinyl silane compound, and then is subjected to hydrosilylation reaction with double-end hydrogen-containing silicone oil and styrene under the action of a platinum catalyst. According to the invention, the polysiloxane chain segment with enhancing, plastifying and broad-spectrum antibacterial effects is introduced to graft the nano titanium dioxide, so that the balance of various properties such as mechanical strength, antibacterial efficiency and softness of the polypropylene staple fiber is realized.

The invention provides high-weather-resistance and anti-aging silicone rubber and a preparation method and application thereof.The high-weather-resistance and anti-aging silicone rubber is prepared from, by mass, 100 parts of methyl vinyl silicone rubber, 30-60 parts of white carbon black, 6-8 parts of an alkyl silane coupling agent, 0.5-2 parts of a hindered amine silane coupling agent, 0.5-2 parts of a vinyl silane coupling agent and 3-5 parts of vinyl MQ silicone resin. 1-1.5 parts of vinyl hydroxyl silicone oil; 1-3 parts of organic peroxide; wherein the hindered amine silane coupling agent is obtained by reacting hindered amine with an isocyanate silane coupling agent. Through the formula design, the excellent toughness of the silicone rubber can be maintained, and meanwhile, the long-term weather resistance and the mechanical property retention rate of the material under ultraviolet radiation and humid and hot conditions can be remarkably improved.

The invention belongs to the technical field of polymer materials and electric wires and cables, and discloses a high-toughness cable composite material and a preparation method and application thereof. The preparation method comprises the following steps: (1) adding silane-terminated liquid polybutadiene, hydroxyl silicone oil and an organic tin catalyst into an anhydrous solvent, uniformly mixing, heating to 80-100 DEG C, carrying out dealcoholization condensation reaction, and evaporating to remove the solvent after the reaction is completed, so as to obtain an organic silicon modified polybutadiene cross-linking agent; and (2) adding the obtained organic silicon modified polybutadiene cross-linking agent, PE, EVA, a reinforcing filler and an initiator into an extruder in an oxygen-free atmosphere, carrying out melt blending cross-linking reaction, and carrying out extrusion molding to obtain the high-toughness cable composite material. Compared with a conventional vinyl silane cross-linking agent, the organic silicon modified polybutadiene cross-linking agent disclosed by the invention can remarkably improve the mechanical strength, flexibility and weather resistance of the obtained cross-linked polyethylene composite material.

The invention discloses a water-based organic silicon coating and a preparation method thereof, the water-based organic silicon coating is prepared by reaction of an organic silicon prepolymer and hydrogen-containing silicone oil, the organic silicon prepolymer is prepared by reaction of a siloxane reactant and a vinyl silane reactant, and no Si-H bond structure exists in the organic silicon prepolymer. The invention develops a synthetic route for preparing the metal protection type water-based organic silicon coating through two components, the number of Si-H bond structures in the reaction is reduced by controlling the Si-H bond structures in the organic silicon prepolymer, coating bubbling caused by generation of gas is prevented, and the crosslinking density is reduced. An inorganic-organic polymer coating with a certain space structure is formed under the action of nano-scale fumed silica through addition reaction of an organic silicon prepolymer and hydrogen-containing silicone oil and hydrolysis-condensation reaction of methoxyl of the organic silicon prepolymer, so that the performance stability of a finished product of the coating is improved; and the coating has excellent mechanical property, anti-sticking property and anti-corrosion property.

The invention belongs to the technical field of coating materials, and particularly relates to an ablation-resistant anti-aging coating on the surface of an aircraft and a preparation method of the ablation-resistant anti-aging coating. A silane coupling agent containing an epoxy group and vinyl and boric acid are used as raw materials, an organic silicon-boron hybrid oligomer with a Si-O-Si and Si-O-B bond stereo structure is obtained by adjusting the ratio of the silane coupling agent to the boric acid and serves as a bridge, and phenolic resin, hydrogen-containing silane and vinyl silicone rubber are combined together to form the ablation-resistant anti-aging coating. Wherein an epoxy group and a phenolic hydroxyl group are subjected to a condensation reaction, vinyl and a platinum catalyst form a compact cross-linked structure through hydrogen-containing silane, and the obtained coating has a lower ablation rate, better anti-UV weather resistance and higher flexibility, is suitable for long-time protection of the surface of an aircraft, and has a better ablation protection effect under shear airflow impact.

The invention discloses hand feeling modified silica gel special for textiles and a preparation method of the hand feeling modified silica gel, and belongs to the field of functional textile coating materials. The high-temperature-resistant silicone oil composition is prepared from the following components in parts by weight: 45 to 65 parts of phenyl silicone oil matrix, 10 to 20 parts of polyether block copolymer, 5 to 12 parts of CaCO3 / glass bead compound, 1.5 to 3 parts of closed polyurethane siloxane, 2 to 4 parts of rosin derivative grafted vinyl silane and 0.5 to 1.5 parts of Pt / I-catalyst. The coating is endowed with low-temperature flexibility and initial high friction property through phenyl silicone oil; the polyether block copolymer realizes humidity response adjustment; nano CaCO3 and glass beads are compounded through KH-550 to form a gradient micro-nano structure, so that the air permeability is high, and the frictional resistance is reduced; closed polyurethane siloxane (120 DEG C deblocking-NCO) and rosin derivative silane (160 DEG C methoxy condensation) are subjected to sequential synergistic bonding of the chemical fiber, and high adhesive force is provided; the comprehensive performance of the coating is obviously improved.

The invention discloses a preparation method of active nano silicone rubber core-shell particle pre-dispersion liquid. The preparation method comprises the following steps: pre-emulsifying an organic silicon monomer, a silane coupling agent and a vinyl silane coupling agent, then carrying out hydrolytic polycondensation under the condition of an acid catalyst, synthesizing a nano silicon rubber core particle emulsion, taking the nano silicon rubber core particle emulsion as a seed, dropwise adding a double-bond-containing pre-emulsion under the condition of the catalyst, grafting a double-bond-containing monomer shell through the vinyl silane coupling agent, and carrying out vacuum drying to obtain the nano silicon rubber core particle emulsion. The preparation method comprises the following steps: preparing a nano silicone rubber core-shell particle emulsion, taking the nano silicone rubber core-shell particle emulsion as a seed, dropwise adding a functional monomer pre-emulsion, grafting a reactive group shell to obtain an active nano silicone rubber multi-layer core-shell particle emulsion, carrying out spray drying on the emulsion, and uniformly dispersing the emulsion in epoxy resin in a melt blending manner to prepare an active nano silicone rubber core-shell particle pre-dispersion liquid. The pre-dispersion liquid prepared by the invention has the characteristics of good UV light permeability, toughness, heat resistance, electrical performance and the like, so that the pre-dispersion liquid has good application value in the fields of 3D printing, electronics, aerospace and the like.

The invention relates to the technical field of flame-retardant clothing, and discloses a light flame-retardant fire-fighting jacket and application thereof.The jacket is prepared from flame-retardant aramid fabric, and the flame-retardant aramid fabric is prepared through the following steps that (1) surface treatment is conducted on the aramid fabric, vinyl functional groups are grafted on the surface of the aramid fabric, and a flame-retardant flame-retardant fabric is obtained; the surface modified aramid fiber fabric is obtained; (2) preparing a flame retardant with a core-shell structure; and (3) adding the compound in the step (2) into absolute ethyl alcohol, stirring to obtain a uniform suspension, adjusting the pH value to 3-4 by adding an acid solution, reacting at 180-200 DEG C for 8-12 hours, and then filtering and drying to obtain the flame retardant with the core-shell structure. (4) dispersing the flame retardant in the step (3) in ethanol, adding 2wt% of a vinyl silane coupling agent, uniformly mixing, and reacting for 3-6 hours; and adding the surface modified aramid fabric in the step (1) into ethanol, and adding an initiator for reaction. According to the application, the durability of the flame retardant property of the aramid fabric can be improved.

This invention relates to a method for producing a stable copolymer composition, comprising adding an organic solvent, an alkyl-alkoxysilane and / or a C1-C9 alcohol, a monomer, and a free radical initiator to a reactor. The copolymer composition is based on a vinyl-branched ester polymer modified with a vinylsilane and a dehydrating agent. The copolymer composition can be formulated to a desired viscosity, can be applied using conventional techniques, and can be optimized for curing as a single-package system at room temperature in the presence of a suitable catalyst.

The invention discloses a wear-resistant anti-icing easy-to-deice coating for power equipment and a preparation method thereof, and relates to the technical field of coatings. The wear-resistant anti-icing easy-to-deice coating for the electrical equipment is prepared from the following raw material components in parts by weight: 40 to 60 parts of water-based fluorocarbon resin dispersion, 5 to 15 parts of perfluorosilane surface modified filler, 3 to 10 parts of light-absorbing heating material, 0.5 to 2 parts of wetting dispersant, 0.2 to 0.6 part of defoaming agent, 0.2 to 1 part of flatting agent, 0.5 to 1 part of anti-aging agent, 15 to 25 parts of deionized water and 12 to 20 parts of water-based isocyanate curing agent. The perfluorosilane surface modified filler is obtained by modifying a filler with a perfluorosilane coupling agent; the light-absorbing heating material is a Fe3O4 / C composite material or a product obtained by further modifying the Fe3O4 / C composite material through a vinyl silane coupling agent and then reacting and grafting with amino-terminated hyperbranched polyamide.

The present application discloses an aluminum oxide-coated film for aging-resistant packaging and a preparation method thereof, belonging to the field of thin films. An aluminum oxide-coated film for aging-resistant packaging comprises a substrate, one side of which is sequentially provided with a first polyurethane coating, a first aluminum oxide coating, a second polyurethane coating, a second aluminum oxide coating, and a third polyurethane coating; the first polyurethane coating, the second polyurethane coating, and the third polyurethane coating can all be cured by polyurethane coating, and the polyurethane coating contains a main agent, an isocyanate curing agent, an auxiliary agent, and water; the main agent contains a hydroxyl-terminated polyurethane emulsion, silica sol, and a modified aluminum sol, and the modified aluminum sol is obtained by reacting the aluminum sol with a vinyl silane coupling agent, and the resulting grafted mixture is then polymerized with a fluorine-containing acrylate monomer and styrene. The present application has the advantages of reducing the difficulty of producing solar photovoltaic backsheets and maintaining aging resistance.

The application provides a high-filler-filled biodegradable material and a preparation method thereof, and belongs to the field of polymer materials.The biodegradable film material comprises the following components: 30-65 parts of PBAT resin, 1-10 parts of PLA resin, 1-5 parts of a plasticizing coupling modifier, 35-55 parts of filler, and 0-1 part of an opening agent.The plasticizing coupling modifier is prepared by copolymerization of raw materials comprising a capped polyester plasticizer, a vinyl silane coupling agent and glycidyl methacrylate under the action of an initiator, and the side chain has a large number of polydiacid-diglycol ester plasticizing groups and silane coupling groups, so that the PBAT resin, the PLA resin and the filler can be combined through hydrogen bonds and chemical bonds, and are fully infiltrated, and the plasticizing coupling modifier also has an epoxy group, which increases the compatibility of the PBAT and the PLA resin.The prepared biodegradable film has a higher filler ratio, a lower cost, fewer film crystal points and good mechanical properties.

The present disclosure provides an electrolyte additive, an electrolyte, a battery, and an electric device. The electrolyte additive, which is for use in batteries having silicon-based negative electrodes, comprises a first additive and a first lithium salt, wherein the first additive comprises tetravinylsilane and tris(vinyldimethylsilyl) phosphate, and the first lithium salt comprises lithium tetrafluoro oxalato phosphate.

The invention relates to the technical field of batteries, in particular to a battery and a power utilization device, and the battery comprises a positive pole piece, a negative pole piece and electrolyte; the positive pole piece comprises a positive current collector and a positive active layer arranged on at least one surface of the positive current collector, the positive active layer comprises a positive lithium supplement agent, and the positive lithium supplement agent comprises at least one of lithium ferrite and lithium nickelate; the electrolyte comprises a first additive, the first additive comprises a compound with a structure shown in a formula (I), R1, R2 and R3 are respectively and independently selected from one of allyl, divinyl methyl silane, vinyl dimethyl silane or trivinyl silane, and at least one of R1, R2 and R3 is selected from one of divinyl methyl silane group, vinyl dimethyl silane group or trivinyl silane group. By adding the first additive into the electrolyte, dissolution of iron ions or nickel ions in the lithium supplement agent is inhibited, the structural stability of the positive electrode lithium supplement agent is enhanced, and the cycle life of the battery is prolonged.