38results about How to "Increase surface polarity" patented technology

The invention discloses a modified polylactic acid material applied to high-speed 3D printing and a preparation method of the modified polylactic acid material. The modified polylactic acid material comprises the following components in parts by weight: 50-80 parts of a polylactic acid material, 10-30 parts of inorganic powder, 1-10 parts of a toughening agent, 0.1-0.5 part of a coupling agent, 0.1-0.4 part of a hindered phenol antioxidant, 0.1-0.4 part of a phosphite antioxidant and 0.2-0.6 part of a plasticizer. The invention has the following beneficial effects: PLA with different flowability is compounded as a base material and is blended with inorganic powder, so that the printing speed of the material reaches 500mm / s, and excellent printability of high precision, no wiredrawing and layer grain covering is achieved; the coupling agent is introduced into a system of the PLA and the inorganic powder, so that the surface polarity of the inorganic powder is improved, the inorganic powder has good compatibility with a resin matrix, and the interlayer adhesive force and the mechanical property of the material are further improved.

The invention discloses a sulfur-doped carbon-based composite wave-absorbing material as well as a preparation method and application thereof. Sulfonated resin is used as a carbon source, is impregnated with a salt solution of iron, nickel, cobalt and other metals, and then is subjected to high-temperature carbonization in an inert atmosphere, so that the sulfur-doped carbon-based composite wave-absorbing material is prepared. The content of the magnetic components in the composite wave-absorbing material can be adjusted by adjusting the concentration of the metal salt solution, and the electromagnetic wave absorption performance can be further adjusted and controlled in a wide range. The raw material components are stable, the cost is low, and the preparation method is simple and suitable for industrial production; sulfur-containing sulfonated resin is used, after heat treatment, a defect and a functional group introduced by sulfur doping serve as a dipole center, dipole polarization is induced under a high-frequency electromagnetic field, and the dielectric loss capacity of the material can be improved; the composite wave-absorbing material has multiple electromagnetic loss mechanisms, and is wide in effective absorption frequency band, light in weight, thin in thickness and high in wave-absorbing performance.

The invention belongs to the technical field of artificial board manufacturing, and particularly relates to a formaldehyde-free adhesive as well as a preparation method and application thereof, raw materials for preparing the formaldehyde-free adhesive comprise a flowable agent and a filling agent, and the formaldehyde-free adhesive is obtained by combining the raw materials through molecular acting force among the raw materials. The formaldehyde-free adhesive has the advantages of being high in bonding strength, stable in physical and chemical properties and not prone to deterioration, epoxy groups and carboxyl or anhydride groups in the formaldehyde-free adhesive can be directly reacted and coupled with groups on the surfaces of biomass fibers, the surface polarity of the formaldehyde-free adhesive after curing is large, the acting force between the formaldehyde-free adhesive and the biomass fibers is strong, and the formaldehyde-free adhesive is not prone to deterioration. The formaldehyde-free adhesive is high in strength after being cured; in addition, the formaldehyde-free adhesive subjected to complete curing reaction still has reversibility, the formaldehyde-free adhesive can be re-melted after being heated again, leftover materials generated by cutting in the later period of plate making can be subjected to hot pressing plate making without adding glue, secondary utilization of artificial plate waste is facilitated, resources are saved, and the environment is protected.

The invention relates to the technical field of powder coatings, in particular to high-fluidity superfine molding powder and a preparation method thereof. The high-fluidity superfine plastic powder comprises the following components in parts by weight: 40-50 parts of epoxy resin, 15-25 parts of a curing agent, 2-4 parts of a catalyst A, 3-5 parts of a plasticizer, 5-8 parts of polyacrylic acid and / or polyacrylate, 3-5 parts of a silane coupling agent, 10-20 parts of filler and 4-6 parts of other auxiliaries, the curing agent at least comprises a fluorine modified amine curing agent; and the median particle size D50 of the powder coating is 10-20 [mu] m. The powder coating adopting the epoxy resin / fluorine-modified amine curing agent system has better flowability and uniformity, charged powder particles can be guided to the surface of a workpiece under the action of an electric field to form a uniform thin coating, the powder particles are easier to carry charges with the same polarity, repulsive force among the particles is increased, and the powder coating can be applied to the surface of the workpiece. Uniform dispersion of powder particles can be kept, and the phenomenon of particle agglomeration is reduced.

The invention discloses a fluorine-containing polyimide-based composite solid electrolyte, a preparation method thereof and a lithium battery. The preparation method comprises the following steps: preparing fluorine-containing polyimide by adopting a chemical imidization method, enabling the interior of the fluorine-containing polyimide to generate crosslinking by adding a cross-linking agent, then dissolving SN and LITFSI in N, N-dimethylformamide, adding into an imidized cross-linked fluorine-containing polyimide solution, and then preparing into a film. And carrying out suction filtration on the obtained membrane in a sand core funnel by using a nano filter membrane to form a porous membrane, soaking the porous membrane in absolute ethyl alcohol, removing the solvent, and carrying out thermal crosslinking to obtain the fluorine-containing polyimide-based composite solid electrolyte. According to the preparation method disclosed by the invention, the FPI and the SN can be mixed to prepare the uniform electrolyte membrane, so that the rate capability of the lithium ion battery is remarkably improved, and meanwhile, the mechanical property of the electrolyte membrane is enhanced.

The invention relates to the technical field of modifiers, in particular to a plant shell powder modifier and a preparation method thereof.The preparation method includes the steps that walnut shell powder, phenolic compounds and amine compounds are added into a stirrer with a temperature control jacket, stirred to be uniform and dried in vacuum, and performance characterization parameters of the plant shell powder modifier are calculated to obtain the plant shell powder modifier. According to the method, the phenolic compound and the amine compound are added into the walnut shell powder to modify the walnut shell powder, the compatibility between the modified plant shell powder modifier and rubber is improved, the dispersing performance is improved, the process is simple, the cost is low, and the method is suitable for industrial production. The performance of the plant shell powder modifier and the performance of a rubber product prepared by adding the plant shell powder modifier are evaluated, and whether the performance of the plant shell powder modifier meets the standard or not can be reliably evaluated.

The invention relates to the technical field of concrete material preparation, and particularly discloses a homogeneous multi-dimensional basalt reinforced material as well as a preparation method and application thereof. The reinforcing material comprises basalt fibers and basalt fiber powder anchored on the surfaces of the fibers through silicon dioxide amorphous layers formed on the surfaces of the fibers in situ. The preparation method comprises the following steps: (1) dispersing basalt fibers into ethanol in which tetraethoxysilane is dissolved, heating, and then adding acid liquor to carry out hydrolysis reaction on the tetraethoxysilane, so that a silicon dioxide amorphous layer is formed on the surface of the basalt fibers; and (2) adding basalt fiber powder, stirring until the solution is clear, cooling to room temperature, and continuing to age the silicon dioxide amorphous layer. And after the reaction is finished, separating out a solid product, washing and drying to obtain the homogeneous multi-dimensional basalt reinforced material. According to the invention, not only is the dispersity of the basalt fiber improved, but also the corrosion resistance of the basalt fiber in an alkaline environment generated by muddy water is improved.

The invention discloses a preparation method of a mesoporous carbon loaded platinum-based catalyst, and relates to the technical field of catalysts, and the preparation method comprises the following preparation steps: carrying out acid-alkali treatment on mesoporous carbon at normal temperature, and then washing and drying; the preparation method comprises the following steps: preparing a platinum nano particle suspension, placing the platinum nano particle suspension in a vacuum tank, reducing the vacuum degree of the vacuum tank to 0.05-0.15 atmospheric pressure, keeping vacuum, adding the platinum nano particle suspension into the vacuum tank, carrying out ultrasonic treatment under a vacuum condition, gradually adjusting the pressure from a vacuum state to normal pressure, repeating the pressure circulation for several times, and filtering to obtain the platinum-containing mesoporous carbon. Normal-temperature inert gas is used for purging the platinum-containing mesoporous carbon; and drying the purged platinum-containing mesoporous carbon, and calcining the dried platinum-containing mesoporous carbon in an inert gas to finally obtain the mesoporous carbon loaded platinum-based catalyst. The mesoporous carbon loaded platinum-based catalyst prepared by the method can ensure that nano particles are uniformly filled in pores, and the high activity and long-term stability of the mesoporous carbon loaded platinum-based catalyst are improved.

The present invention provides a liquid crystal polymer, an LCP fiber, and a preparation method and application thereof, and belongs to the technical field of polymer materials. The monomer unit of the liquid crystal polymer of the present invention includes NH- and O- groups, and the molar content of the monomer unit containing NH- is 1 to 15%. The preparation method of the LCP fiber of the present invention uses the above-mentioned liquid crystal polymer as a raw material, sprays an alkyl phosphate ester salt aqueous solution during the spinning process, and the alkyl phosphate ester salt reacts with the amide group of the liquid crystal polymer to form a hydrogen bond, so that the alkyl phosphate ester salt is tightly combined with the LCP fiber, greatly improving the surface polarity of the LCP fiber, thereby improving the binding force between the LCP fiber and other resins.

This invention pertains to compositions of polymeric compounds, specifically a recycled rubber powder modified asphalt based on a renewable composite activator, its preparation method, and its application. The recycled rubber powder modified asphalt comprises a base asphalt and activated rubber powder in a mass ratio of 1:(0.2~0.3). The activated rubber powder comprises waste tire rubber powder and a composite activator in a mass ratio of 10:(0.8~1.5). The composite activator comprises an organic phase and an inorganic phase in a mass ratio of (1.5~3):1. The organic phase is a chitosan-amino acid derivative, and the inorganic phase is a layered bimetallic hydroxide. Compared with existing technologies, the rubber powder modified asphalt prepared by this invention exhibits good high-temperature storage stability and interfacial structural integrity, demonstrating excellent anti-aging properties and high-temperature rutting resistance during long-term service.

The invention provides a carbon fiber reinforced polyether-ether-ketone self-lubricating composite material and a preparation method and application thereof.The preparation method comprises the steps that carbon fiber serves as an anode, voltage is applied to an electrolyte solution, electrochemical oxidation treatment is conducted, hydroxylated carbon fiber is obtained, the hydroxylated carbon fiber and 2-amino-5-nitrobenzothiazole are mixed, and the carbon fiber reinforced polyether-ether-ketone self-lubricating composite material is obtained. Adding an anhydrous modified reaction solvent, and reacting at 25-40 DEG C for 4-10 hours to obtain modified carbon fibers; and melting and granulating the self-lubricating composite material: mixing the modified carbon fiber, polyether-ether-ketone, a lubricant and an auxiliary agent in a high-speed mixer for 10-20 minutes, extruding by using a double-screw extruder, cooling, and granulating to obtain the carbon fiber reinforced polyether-ether-ketone self-lubricating composite material. The carbon fiber reinforced polyether-ether-ketone self-lubricating composite material is applied to self-lubricating mechanical parts. According to the self-lubricating composite material, the self-lubricating performance is improved, the interface bonding energy between the carbon fibers and the polyether-ether-ketone is enhanced, and the self-lubricating composite material has good mechanical performance.

The invention relates to a conductive agent and a preparation method thereof, a pole piece, a secondary battery and an electric device. The conductive agent comprises a nitrogen-doped porous carbon nanosheet with a lamellar structure. According to the conductive agent provided by the invention, the nitrogen-doped porous carbon nanosheet with the lamellar structure is adopted as the conductive agent, on one hand, the lamellar structure forms a large-area conductive network, so that electrons can be conducted in a two-dimensional space, and meanwhile, nitrogen is doped in the carbon nanosheet to introduce additional conductive contact sites; the porous structure effectively increases the specific surface area, so that the conductivity of the conductive agent is improved. And on the other hand, the material cost of the conductive agent is reduced, and through the synergistic effect of nitrogen doping and the porous structure, the dispersity of the conductive agent in the slurry is improved, the agglomeration phenomenon is reduced, the preparation yield of the pole piece is improved, and large-scale industrial application is further facilitated.

This invention relates to a volatile organic compound (VOC) adsorbent material and its preparation method. The method involves first modifying a 5A molecular sieve with lithium, followed by vanadium modification to obtain a Li-V-5A adsorbent material. Based on the total mass of the adsorbent material, the Li content is 0.8%–4.5%, and the V content is 0.2%–1%. The adsorbent material obtained by this invention, using a 5A molecular sieve as a matrix and modified to obtain the Li-V-5A adsorbent material, has advantages such as good adsorption effect on low-carbon hydrocarbons and strong resistance to sulfur poisoning, especially high adsorption and removal rate of ethane.

The invention relates to the technical field of decorative films, in particular to a high-strength PP material and application thereof in decorative films. The prepared high-strength PP material is applied to a decorative film, and the technical problems that the decorative film is low in mechanical strength and poor in anti-corrosion and antibacterial performance are solved. The high-strength PP material is finally prepared by preparing the base layer and preparing the pigment layer and the wear-resistant layer on the surface of the base layer, and the high-strength PP material is applied to the surface of wooden furniture to obtain the decorative film. The raw material dosage of the base layer is changed; adjusting the dosage of raw materials for preparing the bis (pinacol) diboronic acid modified ethyl acrylic acid; the dosage of the cubic boron nitride, the wear-resistant layer and the oxabicyclo heptane is changed; cubic boron nitride is used for loading antibacterial liquid; performing plasma treatment on the PP material; the prepared high-strength PP material is good in mechanical property, and the decorative film is high in strength and good in antibacterial property.

The invention belongs to the technical field of composite material forming, and particularly relates to a silicon-containing coating and a preparation method thereof as well as a modified nylon material as well as a preparation method and application thereof. Polysiloxane with small molecular weight is adopted, so that the product can be cured and formed at low temperature, energy consumption in the production process is reduced, and the thermal shrinkage phenomenon of nylon fibers in a high-temperature process is avoided. The silicon-containing coating provided by the invention not only can be cured and molded at low temperature, but also can resist higher temperature, the raw materials are easy to obtain, and the cost is controllable. According to the modified nylon material provided by the invention, the surface polarity of the nylon fiber is improved by utilizing the silicon-containing coating, the obtained modified nylon material not only has good thermal stability and no silicon migration, but also is easy to remove from the surface of a composite material product after being used, and grains of fiber cloth are reserved on the surface of the product, so that the post-treatment time of the product is shortened, and the service life of the product is prolonged. And the production efficiency of the composite material is improved.

The invention discloses a POK quantum dot diffusion plate and a preparation method thereof, wherein the diffusion plate comprises the following components in parts by mass: 85-95 parts of POK resin, 0.8-2.4 parts of quantum dots, 1-3 parts of organosilicon light diffusers, 0.15-0.45 parts of antioxidants, 1-5 parts of mineral oils, 0.6-1.2 parts of light stabilizers, 0.4-0.8 parts of ultraviolet absorbers, 0.05-0.15 parts of brighteners, and 1-2 parts of dodecylamine. The product has the advantages of stable luminescence, good toughness, high light transmittance, and not easy to age and turn yellow, while maintaining high water and oxygen barrier properties and luminescence efficiency. It has good comprehensive performance and strong market competitiveness.

The invention discloses a silk-screen printing in-mold decoration method. The method comprises the following steps that firstly, a thin film is pretreated; 2, carrying out corona treatment on the pretreated film; 3, designing a plurality of layers of patterns, and manufacturing a corresponding screen printing plate; pouring printing ink into a screen printing plate according to the color requirement of the first layer, uniformly imprinting the printing ink to the surface of a film by using a scraper, and drying; according to the number of layers needing to be printed, the printing step of the first layer is repeated; wherein in the silk-screen printing process of a certain layer or several layers, corona treatment is carried out at the same time; and 4, cutting, forming, punching, inspecting, in-mold injection molding, film covering and inspecting are conducted on the printed film, and the decorative product is obtained. According to the in-mold decoration method disclosed by the invention, the ink can be more easily spread on the surface of a thin film, so that the adhesiveness of the ink is remarkably improved; meanwhile, the interaction force and the chemical bonding force between the ink and plastic film molecules are enhanced, and the firmness and the durability of printed patterns are ensured.

The present application relates to the technical field of carbon nanotube composite material, in particular to a carbon nanotube / polystyrene composite material, a preparation method and application thereof, the preparation method comprising the following steps: (1) carbon nanotubes are soaked in acid solution, taken out after treatment under ultrasonic condition, and acidized carbon nanotubes are obtained; (2) the acidized carbon nanotubes are mixed with polystyrene particles, and the mixture is uniformly stirred by mechanical stirring to obtain a premix; (3) the premix is placed in a screw extruder, heated, melted, extruded and cooled to obtain the carbon nanotube / polystyrene composite material. The acidization treatment method of carbon nanotubes is adopted, hydrophilic functional groups such as hydroxyl and carboxyl are introduced, the surface polarity of CNT is improved, and the compatibility of CNT in the PS matrix is improved. The method is simple and easy to operate, can significantly improve the mechanical properties and conductivity of the composite material without introducing other impurities, the process is simple and controllable, and is suitable for large-scale continuous production.

The application discloses an enhanced polytetrafluoroethylene composite framework structure composite material and a preparation method thereof. The material is composed of polysulfone modified polytetrafluoroethylene resin, carbon fiber, molybdenum disulfide, a reactive silicone resin precursor and a platinum catalyst, a continuous three-dimensional siloxane network is constructed in situ at the interface through a silicon hydrogen addition cross-linking, and a multi-scale reinforced framework structure is formed in cooperation with the carbon fiber. The material has excellent mechanical properties, creep resistance and wear resistance, and is suitable for high-performance sealing and wear-resistant fields.

The present application relates to the technical field of paint, in particular to an alkali-resistant waterproof exterior wall paint and a preparation method thereof. In order to further improve the water resistance and alkali resistance of the stone-like paint, the stone-like paint is improved, a texture protective paint is added to the structure of the traditional stone-like paint, and colored sand is added to the components, so that a concave-convex texture can be provided for the surface of the stone-like paint after the stone-like paint is finally formed. In addition, boron nitride nanosheets are added to the texture protective paint and modified, and fluorine and silicon elements are introduced into the boron nitride nanosheets, so as to improve the chemical corrosion resistance of the resin, prevent the infiltration and invasion of external corrosive media, and effectively improve the acid and alkali resistance of the resin paint.

The invention relates to the technical field of para-aramid preparation, and discloses a high-strength and high-toughness modified para-aramid fiber and a preparation method thereof. According to the invention, a chlorine-containing diamine monomer with a molar ratio of 0.05-0.15 in diamine is introduced into a para-heterocyclic aramid fiber structure in a block copolymerization form through a two-pot method, so that when the fiber is subjected to heat treatment, a chlorine side group on a chlorine-containing block is broken and dechlorinated at a high temperature to generate a phenyl free radical, local chemical coupling reaction chain extension is realized between macromolecular chains, and the partial chemical coupling reaction chain extension is realized; the molecular weight is increased. Meanwhile, the polymerization degree ratio of the chlorine-free block to the chlorine-containing block is controlled to be 4.0-9.0, and the mobility of the whole macromolecular chain is maintained, so that the high-strength and high-toughness modified para-aramid fiber is prepared. The tensile strength of the prepared high-strength and high-toughness modified para-aramid fiber is 33-40 cN / dtex, the elongation at break is 4.5-8.0%, the toughness is 100-130 MJ / m < 3 >, the high-strength and high-toughness modified para-aramid fiber has good composite performance, and the strength of impregnated silk is 5.5-7.0 GPa.

The application provides a kind of fabric reinforced polymer composite material and preparation method, the method is first by hydroentanglement process thermoplastic fiber web is fixed on the two sides of fabric, and hydroentanglement makes thermoplastic fiber in thermoplastic fiber web and fabric interpenetration and hold together, and combine firmly;After drying, the polymer surface film is covered on the two sides of base cloth layer, and the polymer surface film is combined with base cloth layer by heating, because the surface of base cloth layer is the same material as the composition of polymer surface film, the material remains consistent, it is convenient for hot forming fusion, thereby increasing the peel strength, and improving the adhesion strength of composite material coating.Moreover, when the hydroentanglement medium is polymer solution, the polymer solution will remain in the pores of fabric and thermoplastic fiber web during the hydroentanglement process, and when subsequent drying and heating, the polymer in the pores will be integrated with the thermoplastic fiber web, thereby further enhancing the peel strength.

The invention relates to the technical field of printing films, in particular to a PET electronic tag printing film and a preparation method thereof.The preparation method comprises the following steps that S1, heat-resistant low-shrinkage functional master batch A is prepared, specifically, organic-inorganic hybrid functional powder P1 with an epoxy functional group is synthesized firstly, then the functional powder P1 and polyester chips are evenly mixed and extruded through a screw extruder, and the heat-resistant low-shrinkage functional master batch A is obtained; granulating to obtain a heat-resistant low-shrinkage functional master batch A; s2, preparation of the PET electronic tag film: mixing the functional master batch A, the opening master batch B and the polyester chips, and preparing the heat-resistant low-shrinkage PET electronic tag film by using a two-way stretching process; s3, preparing a water-based functional pre-coating layer; and S4, preparation of the PET electronic tag printing film: diluting the prepared water-based functional pre-coating glue, coating the water-based functional pre-coating glue on the PET electronic tag film prepared in the step S2, and drying to obtain the PET electronic tag printing film. According to the preparation method disclosed by the invention, the PET is modified by adopting a nano silicon dioxide in-situ copolymerized acrylic resin material with an epoxy functional group to improve the heat resistance and the heat shrinkage rate at high temperature.

The extra-black color paste for coloring the gum fiber stock solution comprises the following raw materials in parts by weight: 35-40 parts of modified carbon black, 10-15 parts of a dispersing agent, 2-4 parts of a pH regulator and 30-35 parts of water. According to the invention, the surface polarity of the carbon black can be improved, agglomeration can be reduced, ball milling coating is carried out through an additive solution (containing a basalt fiber modifier, boron nitride, chitosan and yttrium nitrate), the dispersion uniformity of carbon black particles is further improved, the light absorption capability can be enhanced through the uniform dispersion of the carbon black particles, the blackness of the color paste is greatly improved, and the coloring requirement of special black is met.

This invention relates to the field of textile fabric technology, specifically to a high-elasticity fiber fabric and its molding process. The fabric comprises a knitted base fabric woven from nylon-coated modified polyurethane elastic fiber-coated yarn. The modified polyurethane elastic fiber comprises a core elastic polyurethane phase and a surface hard-segment enriched phase. The surface phase is formed by a composite of polycarbonate diol-type high-hardness polyurethane prepolymer, hydrophilic fumed silica, hydrophobic fumed silica, and hydroxyalkyl-terminated polydimethylsiloxane. This invention significantly improves the interfacial stability between the core yarn and nylon without increasing fiber usage or fabric tightness, giving the fabric high elastic recovery rate, low dimensional change after washing, and excellent sweat and heat resistance, thus solving the problem of easy loosening and deformation in traditional high-elasticity fabrics.

The invention relates to the technical field of carbon materials, in particular to a modified graphene microchip and a preparation method and application thereof.The preparation method comprises the steps that S1, maleic anhydride and expanded graphite or worm graphite are stirred and mixed, and a first premix is obtained after cooling; s2, stirring and mixing the first premix with a liquid peroxide initiator to obtain a second premix; and S3, heating the second premix in vacuum and reacting for a certain time, and cleaning and crushing to obtain the modified graphene nanoplatelets. According to the preparation method, maleic anhydride is intercalated and grafted to expanded graphite or vermicular graphite in a low-cost environment-friendly manner, and the expanded graphite or vermicular graphite is stripped by utilizing gas generated by reaction to obtain the maleic anhydride grafted graphene nanoplatelets, so that the surface polarity of the graphene nanoplatelets is greatly improved, and the compatibility of the graphene nanoplatelets with resin, a solvent and the like is effectively improved.

The invention discloses an ultra-soft flat cable with anti-electromagnetic interference capability and a preparation process thereof, and relates to the technical field of flat cable preparation, and the preparation process mainly comprises the following steps: S1, selecting a copper foil as a conductor, respectively laying an insulating material on the upper surface and the lower surface of the copper foil to form an insulating material-conductor-insulating material three-layer structure, and carrying out hot pressing and cooling solidification to obtain a conductor-insulating material three-layer structure; forming an insulating material coating the outer surface of the conductor to obtain a flexible flat cable; and S2, cutting the flexible flat cable, detecting the conductivity, and packaging after the flexible flat cable is qualified. The insulation material is obtained by mixing a GO / PET composite material and a filler, co-extruding and carrying out injection molding, and the GO / PET composite material contains isosorbide and 1, 4-cyclohexanedimethanol. The isosorbide can reduce gaps between molecular chains, block permeation of small molecules and improve the heat resistance of the composite material, and the 1, 4-cyclohexanedimethanol is good in heat stability, has certain rigidity and can improve the impact strength of the composite material.

The invention relates to the technical field of organosilicone addition type heat-conducting flame-retardant pouring sealants, and particularly discloses an addition type pouring sealant base coating liquid as well as a preparation method and application thereof. The addition type pouring sealant primer comprises the following components in parts by weight: 50-70 parts of a tackifier, 0.5-4 parts of a cross-linking agent, 0.001-0.1 part of a catalyst and 30-50 parts of a solvent, the tackifier is a functional titanate tackifier modified by titanate; the titanate modified functional type titanate tackifier is prepared from trimethylolpropane diallyl ether, ethyl acetoacetate and mono-alkoxy type titanate through an ester exchange reaction. The addition type pouring sealant disclosed by the invention can be used for improving the adhesion of each component in the driving power supply, preventing water vapor or moisture in the air from easily permeating into an electronic device through a combined surface of a material and a glue layer, and being beneficial to improving the waterproof and moistureproof performance of the LED driving power supply when the LED driving power supply is used outdoors.

The invention relates to a flame-retardant, low-toxicity and light composite armor which comprises m composite layers which are sequentially laid from bottom to top, m is larger than or equal to 2, each composite layer comprises, by mass, 15-20 parts of resin, 80-85 parts of fiber cloth and 0.1-1 part of modifier, and the resin is thermoplastic resin or thermosetting resin; the high-performance fiber composite material is used for armor protection, so that the armor mass can be greatly reduced, or higher protection performance can be provided under the same mass condition, and meanwhile, the armor has excellent flame retardant property.

The application discloses a preparation method of a high-fluorine-containing crosslinked polyimide nanofiber membrane, and comprises the following steps: synthesizing a polyamide acid precursor solution by mixing hexafluoro aromatic diamine and aromatic dianhydride in a solvent, preparing the polyamide acid precursor solution into a spinning solution, preparing a polyamide acid nanofiber membrane by a high-pressure electrospinning method, drying the polyamide acid nanofiber membrane in a vacuum environment at 100-200 DEG C for 0.5-1 h, then increasing the temperature to 200-300 DEG C and heating for 2-4 h, and finally increasing the temperature to 300-350 DEG C under nitrogen to perform thermal amidation and thermal crosslinking, and the holding time is 1-2 h. The application further discloses a lithium ion battery separator, which is the high-fluorine-containing crosslinked polyimide nanofiber membrane prepared by the above method. The introduction of dihydroxy and chemical crosslinking solve the problem that too high fluorine group content makes the solubilization ability of the polyimide membrane to the electrolyte too strong, and realize the application of the high-fluorine-containing nanofiber membrane as a high-performance lithium ion battery separator.