122results about How to "Extended Diffusion Path" patented technology

The invention belongs to the technical field of preparation of electrode materials, and particularly relates to a high-tap-density spherical ferric sodium pyrophosphate electrode material and a preparation method thereof. According to the preparation method, a uniform precursor is prepared by utilizing solution gel, and a strategy of combining spray drying with secondary sintering is adopted, so that uniform carbon coating and doping modification of ferric sodium pyrophosphate can be successfully realized, and the strategy provides an important experimental basis for an industrialization process of a sodium ion battery. And the method has great potential of large-scale preparation.

The utility model provides a battery, a battery pack and an energy storage system, the battery comprises a shell, a pole core, a mylar film, an insulating porous film and a bottom support sheet, and the pole core, the mylar film, the insulating porous film and the bottom support sheet are accommodated in the shell; the bottom surface of the pole core, the mylar film, the insulating porous film and the bottom support sheet are sequentially stacked, and the insulating porous film positioned on the bottom surface comprises a plurality of through holes. The through holes of the insulating porous membrane can reduce the circulation of dust falling from the pole core between the pole core and the shell, and reduce the possibility of micro short circuit between the bottom surface of the pole core and the shell.

The invention discloses a grouting reinforcement method for a coal mine working face collapse and burst broken area, which comprises the following steps: S1, on-site investigation and survey are carried out, end face leakage and burst conditions are mastered, and collapse and burst broken reasons are quantitatively analyzed from two aspects of geological factors and engineering factors; s2, the grouting opportunity, the grouting position, the grouting material and the grouting parameters are determined through theoretical calculation, physical experiments and numerical simulation; and S3, a deep and shallow hole grouting mode is adopted for conducting grouting reinforcement on the caving and breaking area of the coal mine working face. According to various factors of coal mine working face collapse, a grouting mode combining deep and shallow holes is provided in a targeted mode, low-pressure slow grouting is adopted for the shallow holes, the shallow holes are used for sealing coal cracks in the working face superficial range, forming a curtain and preventing grout from leaking, floral tube grouting is adopted, the grout diffusion path is increased, and effective diffusion of grout is guaranteed; then deep hole grouting is carried out, and grouting modification is carried out on the coal body with the relatively low deep fracture development degree; therefore, the completeness and strength of the advanced coal body of the working face are improved, the caving condition is improved, top coal and a top plate are better supported, and then top coal leakage is controlled.

The invention discloses an environment-friendly stainless steel passivation solution and a preparation method and application thereof.The preparation method includes the steps that firstly, an epoxy silane coupling agent is adopted for treating nano silicon dioxide, then carboxymethyl chitosan is grafted to the surface of the nano silicon dioxide through the crosslinking effect of epoxy groups, the carboxymethyl chitosan has good film forming performance, and the surface of the nano silicon dioxide is coated with the carboxymethyl chitosan; a film layer is formed on the surface of the metal material, meanwhile, hydroxyl and amino in carboxymethyl chitosan can chemically react with epoxy groups in epoxy resin, the film layer is more compact, a corrosion medium is prevented from permeating the film layer, and then the corrosion resistance of the metal material is improved. Then, acrylamide and allyloxy polyoxyethylene ether are adopted to modify the sepiolite powder, so that the sepiolite powder can be better dispersed in the epoxy resin, and meanwhile, amide groups contained in a polymer can form chemical bonds with hydroxyl and amino in carboxymethyl chitosan and epoxy groups in the epoxy resin, so that the physical shielding effect is further enhanced; and the metal substrate is protected.

The invention relates to the technical field of thermoplastic elastomers, and discloses a bending-resistant data line material and a preparation method thereof. The data line material comprises the following raw materials in parts by weight: 60-80 parts of SEBS, 10-18 parts of a composite flame retardant, 12-18 parts of polypropylene, 10-20 parts of ethylene propylene diene monomer, 4-9 parts of a thermoplastic polyurethane elastomer, 8-15 parts of white oil, 0.8-2 parts of an antioxidant and 1-2 parts of stearic acid. The material is synthesized by adopting SEBS, polypropylene and ethylene propylene diene monomer which are excellent in bending resistance as main raw materials, and various auxiliaries are added, so that the comprehensive performance of a matrix is improved; the thermoplastic polyurethane elastomer is introduced, so that the wear resistance and the mechanical property of the matrix are improved; in the composite flame retardant, organic flame retardance and inorganic flame retardance are combined, so that the flame retardance of a matrix is comprehensively improved.

The invention relates to the technical field of ceramic products, and discloses a recycled daily-use ceramic product and a production process thereof. The ceramic product consists of a ceramic body and a glaze slurry coated on the surface of the ceramic body; the ceramic body is made of waste ceramic products after processing; the glaze slurry comprises the following raw materials: potassium feldspar, sodium feldspar, calcite, quartz, kaolin, silicon dioxide, aluminum oxide, calcium oxide, pigment, paraffin, inorganic antibacterial agent, inorganic modified additive, and deionized water; wherein the inorganic antibacterial agent is copper ions and zinc ions adsorbed on illite powder; the inorganic modified additive is sepiolite fiber combined with glass flake powder through electrostatic adsorption. The ceramic product prepared by the invention has excellent antibacterial performance, corrosion resistance and mechanical properties, and prolongs the service life of the ceramic product.

The invention belongs to the technical field of metal adsorption material preparation, and particularly relates to a preparation method of an attapulgite composite cellulose hydrogel material, which comprises the following steps: (1) uniformly dispersing acid modified attapulgite in water, then adding sodium alginate and polyvinyl alcohol, heating and stirring; (2) adding sodium carboxymethyl cellulose, and continuously stirring to obtain a mixed solution; and (3) injecting the mixed solution into a mold by using an injector, freeze-thawing, freeze-drying, immersing into a CaCl2 solution, cross-linking, washing for multiple times, and freeze-drying again to obtain the attapulgite composite cellulose hydrogel material. Sodium alginate, polyvinyl alcohol, sodium carboxymethyl cellulose and acid modified attapulgite in a proper proportion are matched with a multiple freeze drying method to construct a three-dimensional structure with multiple chemical adsorption, high specific surface area, long diffusion channel and abundant pores, so that the adsorption efficiency and the adsorption capacity of the composite material are improved, and various application requirements are met.

The invention discloses an easy-to-tear high-barrier film, which belongs to the technical field of film packaging, and comprises a base material layer, a binder and a barrier layer from top to bottom, the barrier layer is prepared from the following raw materials in parts by weight: 70 to 90 parts of ethylene-vinyl alcohol copolymer, 5 to 15 parts of modified hexagonal boron nitride, 5 to 8 parts of plasticizer, 1 to 2 parts of lubricant and 0.05 to 2 parts of antioxidant. The prepared high-barrier film is a barrier layer prepared by taking an ethylene-vinyl alcohol copolymer as a main raw material and adding modified hexagonal boron nitride, a plasticizer, a lubricant and an antioxidant, and then the barrier layer is compounded with a base material layer and a binder, so that the high-barrier film with excellent tensile strength and elongation at break is obtained, meanwhile, the oxygen permeability is obviously reduced, and the service life of the high-barrier film is prolonged. And the film also has a certain antibacterial effect, can be widely applied to the fields of food packaging, medical packaging and the like, and has extremely high application value.

The invention provides a Ti3C2 (at) PDA (at) MMT-Zn composite material, a preparation method thereof and a composite coating. The Ti3C2 (at) PDA (at) MMT-Zn composite material is prepared from the following components in parts by mass: 0.2 part of Ti3C2, 0.2 part of MMT, 0.2 part of a zinc nitrate corrosion inhibitor, 0.2 part of dopamine hydrochloride, 0.5 part of a trihydroxymethyl aminomethane Tris buffer solution, 0.1 part of a pH regulator and 120 parts of deionized water. Wherein the Ti3C2 two-dimensional nano material is obtained by taking Ti3AlC2 as a precursor and an HF aqueous solution as an etching system through mixing and stirring. According to the Ti3C2 (at) PDA (at) MMT-Zn composite material disclosed by the invention, not only can the dispersity and compatibility of the composite material in an epoxy coating be ensured, but also the physical shielding effect of a two-dimensional material and the active self-repairing performance of a corrosion inhibitor can be effectively combined to synergistically improve the corrosion resistance of the coating.

The invention relates to the technical field of stainless steel pipe fittings, in particular to a high-performance anti-corrosion stainless steel pipe fitting and a preparation method thereof.The preparation method of the high-performance anti-corrosion stainless steel pipe fitting comprises the following steps that S1, mechanical polishing is conducted; s2, removing oil; s3, acid treatment is conducted, specifically, the stainless steel pipe fitting blank obtained after oil removal is soaked in an acid surfactant solution for 5-10 min, and the stainless steel pipe fitting blank is taken out, washed with water and dried; the solute in the acidic surfactant solution comprises acid and a cationic surfactant; s4, adsorption treatment is conducted, specifically, the stainless steel pipe obtained after acid treatment is soaked in an adsorption solution containing graphene oxide for 4-10 min, and the stainless steel pipe is taken out and dried; and S5, anti-corrosion coating treatment is conducted, specifically, anti-corrosion coating is sprayed to the surface of the stainless steel pipe fitting blank, drying is conducted, and the high-performance anti-corrosion stainless steel pipe fitting is obtained. The method has the advantage that the anti-corrosion performance of the organic anti-corrosion coating can be improved.

The invention discloses a strong acid and alkali resistant plastic material for fume hood surface decoration and a preparation method of the strong acid and alkali resistant plastic material, belongs to the technical field of plastic material processing, and aims at solving the technical problem that in the prior art, the acid and alkali resistance and the bending modulus of a plastic material for fume hood surface decoration need to be further improved. The preparation method specifically comprises the following steps: stirring amino-modified fluorosilicone resin, paraformaldehyde and 1, 4-dioxane in a reaction kettle, dropwise adding an anacardol solution, heating the reaction kettle to 85-95 DEG C, carrying out heat preservation reaction for 6-8 hours, and carrying out post-treatment to obtain the anacardol-based benzoxazine resin. Perfluoro-modified polysiloxane benzoxazine is prepared, naphthalene-containing epoxy resin and imidazole-modified silicon carbide microspheres are compounded, in-situ catalysis synergistic curing is carried out by using filler interface imidazole, a compact organic-inorganic hybrid interpenetrating network is constructed, and the strong acid and alkali corrosion resistance and bending modulus of the material are remarkably improved.

The invention provides a preparation method of a flexible hydrogen delivery pipe, and relates to the field of flexible hydrogen delivery pipe manufacturing, and the flexible hydrogen delivery pipe comprises the following raw material components: polytrifluorochloroethylene, nylon 11, polyvinylidene fluoride, a micro-nano carbon material, polyethyleneimine, a compatilizer, a cross-linking agent, an antioxidant, a dispersing agent and a light stabilizer, the cross-linking agent is a thermoplastic polyurethane copolymer, the micro-nano carbon material comprises graphene oxide and graphene nanoplatelets, the dispersing agent is one of EBS, EB-G and PE wax, the antioxidant is antioxidant 1076, and the light stabilizer is one of benzophenone and 2-hydroxybenzoate; the gas barrier material has the advantages of being good in gas barrier property and high in mechanical property on the whole.

The invention relates to the technical field of inorganic / organic composite film functional materials, and discloses a hydrotalcite material as well as a preparation method and application thereof. Carrying out a colloid mill nucleation reaction on the first mixed salt solution and an alkali solution to obtain hydrotalcite seed crystal slurry; mixing the second mixed salt solution, a slow-release precipitator, an anionic high-molecular polymer and a high-polarity polymer to obtain a mixed solution; dropwise adding the obtained mixed solution into hydrotalcite seed crystal slurry, and reacting to obtain a hydrotalcite material; wherein the first mixed salt solution and the second mixed salt solution both contain soluble divalent metal salt and soluble trivalent metal salt, and the types and the concentrations of the metal salts are the same. The hydrotalcite material provided by the invention has a larger plane size, and can effectively prolong the diffusion path of gas in a film and improve the gas barrier property when being added into a polymer matrix (such as polyurethane) as a functional aid.

The invention relates to the technical field of coatings, and discloses a graphene modified epoxy resin composite anticorrosive coating which is prepared by the following steps: reacting graphene oxide with epoxy chloropropane to obtain epoxidized graphene, reacting the epoxidized graphene with hydroxyl-terminated styrene-butadiene rubber under the action of a catalyst to obtain hydroxyl-terminated styrene-butadiene rubber modified graphene, and reacting the hydroxyl-terminated styrene-butadiene rubber modified graphene with toluene-2, 4-diisocyanate to obtain the graphene modified epoxy resin composite anticorrosive coating. The graphene modified epoxy resin composite anticorrosive paint is finally prepared by reacting isocyanate esterified styrene-butadiene rubber with graphene to obtain isocyanate esterified styrene-butadiene rubber modified graphene, further reacting the isocyanate esterified styrene-butadiene rubber modified graphene with N, N-carbonyldiimidazole to obtain imidazolyl styrene-butadiene rubber modified graphene, and blending the imidazolyl styrene-butadiene rubber modified graphene with epoxy resin, and graphene can absorb and disperse stress and can also form a physical barrier layer. And imidazole can provide free electrons and can form a stable monomolecular adsorption film on the surface of a matrix to prevent the corrosion process and further play a role in corrosion inhibition, so that the corrosion resistance of the epoxy resin coating is effectively improved.

The invention belongs to the technical field of material surface coatings, and provides high-temperature water vapor oxidation resistant coating slurry, a coating and a preparation method thereof, the high-temperature water vapor oxidation resistant coating slurry is obtained by mixing a solid phase component and a liquid phase component according to a ratio of 10g: (3-7) mL; the solid phase component is prepared from the following components in parts by mass: 50 to 60 parts of aluminum powder, 5 to 15 parts of silicon powder, 10 to 20 parts of aluminum oxide powder and 5 to 35 parts of MXene material; the liquid phase component comprises an aluminum dihydrogen phosphate solution, chromium trioxide and water glass; wherein the ratio of the aluminum dihydrogen phosphate solution to the chromium trioxide to the water glass is 100 mL: (10-30) g: (5-15) mL. A coating is prepared on the basis of the paint, and the crack resistance and the high-temperature water vapor oxidation resistance of the coating are improved.

The invention provides a high-pressure-resistant low-permeability hydrogen rubber sealing material and a preparation method thereof, and the sealing material comprises the following components by weight: 100 parts of ethylene propylene rubber; 4-8 parts of an active agent; 1-3 parts of an anti-aging agent; 20 to 50 parts of a nanometer material; 50 to 60 parts of a filling reinforcing agent; 2-5 parts of a coupling agent; 3-4 parts of a vulcanizing agent dicumyl peroxide; 1 to 2 parts of trialkenyl triisourea serving as an auxiliary vulcanizing agent; 3-8 parts of vulcanized resin; the invention also provides a preparation method of the high-pressure-resistant low-permeability hydrogen rubber sealing material. The preparation method comprises the following steps: pre-mixing, feeding and mixing, adding cross-linking components, standing and curing, hot-pressing and vulcanizing, post-curing and the like. The sealing material disclosed by the invention realizes high-level balance in the aspects of hydrogen permeation barrier, high-pressure burst resistance, wide-temperature interval tolerance and the like, and can effectively meet the sealing requirements of a hydrogen storage system and a high-pressure hydrogen conveying pipeline of a current hydrogen fuel automobile; the material has great advantages in the aspects of raw material cost, manufacturing process and performance stability.

The invention relates to the technical field of furniture boards, and discloses an environment-friendly shaving board and a preparation method thereof.The environment-friendly shaving board is prepared from pentaerythritol glycidyl ether, hexadecyl dimethyl tertiary amine, epoxy chloropropane and the like, an obtained polyepoxy quaternary ammonium salt cross-linking agent generates multiple bonding effects with soybean protein, polyhydroxy phytic acid and graphene oxide, and the environment-friendly shaving board is prepared. The obtained environment-friendly flame-retardant mildew-proof adhesive and bamboo wood shavings are subjected to glue mixing and hot press molding, and the environment-friendly shaving board is obtained. Polyhydroxy phosphoric acid is rich in phosphorus element and has a flame-retardant effect; the quaternary ammonium salt group has a relatively good prevention and treatment effect on molds and chromotropic bacteria; the polyepoxy quaternary ammonium salt cross-linking agent is equivalent to a physical cross-linking point in the shaving board, and is nailed and anchored together with the bamboo shavings due to an adhesive, so that microcracks are prevented from further expanding into large cracks, the board blank is denser, and the reinforcing and toughening effects are achieved; the raw materials are wide in source, non-toxic, harmless, free of formaldehyde release and environment-friendly.

The invention relates to the technical field of plastic products, and discloses a degradable automobile recycled plastic product and a preparation method thereof. According to the plastic product disclosed by the invention, degradable polylactic acid is taken as a main raw material, and automobile recycled plastic particles are added to reduce the utilization of polylactic acid, so that the environmental pollution caused by waste plastic particles is reduced through waste utilization, and the production cost is reduced; in the composite reinforcing agent, firstly, the three elements N, P and B have a synergistic effect to improve the flame retardant property of a matrix, meanwhile, the nanosheet with a layered structure is used for synergistic flame retardance to further improve the flame retardant property of the matrix, the nanosheet introduced into the composite reinforcing agent further has certain photocatalytic performance, macromolecular polymers can be catalytically degraded into micromolecular substances, and the flame retardant property of the matrix is further improved. The degradation rate of the matrix is improved. Therefore, the plastic product disclosed by the invention not only has excellent flame retardant property and degradability, but also reduces the production cost.

The invention discloses a high-performance degradable polyvinyl alcohol-thermoplastic starch food preservative film which is prepared from the following raw materials in parts by weight: 50-65 parts of pre-plasticized polyvinyl alcohol, 35-50 parts of thermoplastic starch, 1-10 parts of modified cellulose, 0.1-3 parts of a cross-linking agent, 0.1-0.5 part of a bacteriostatic agent, 0.1-1 part of an antioxidant and 1-3 parts of a lubricant, and also discloses a preparation method of the product. The polyvinyl alcohol-starch-based composite film prepared by the method disclosed by the invention can be completely biodegraded in a natural environment, serious white pollution caused by discarding plastics into the natural environment is avoided, the polyvinyl alcohol-starch-based composite film is safe and environment-friendly, and meanwhile, cellulose components can be derived from grain processing by-products, so that high-added-value utilization of agricultural and sideline products is also facilitated.

The invention discloses an environment-friendly stainless steel passivation liquid and a preparation method and application thereof. The invention firstly uses an epoxy silane coupling agent to treat nano silicon dioxide, and then grafts carboxymethyl chitosan on the surface of the nano silicon dioxide through the cross-linking effect of epoxy groups. The carboxymethyl chitosan has good film-forming performance and forms a film layer on the surface of a metal material. At the same time, hydroxyl groups and amino groups in the carboxymethyl chitosan can react chemically with epoxy groups in an epoxy resin, so that the film layer is more compact and prevents corrosive media from passing through the film layer, thereby improving the corrosion resistance of the metal material. Then, acrylamide and allyloxy polyoxyethylene ether are used to modify sepiolite powder, so that the sepiolite powder can be better dispersed in the epoxy resin. At the same time, the polymer contains amide groups, which can form chemical bonds with hydroxyl groups and amino groups in the carboxymethyl chitosan and epoxy groups in the epoxy resin, further enhancing the physical shielding effect and protecting the metal substrate.

The invention relates to the technical field of pipelines, in particular to a plastic pipeline containing plant fibers and a preparation method. The material is prepared from the following raw materials: PVC resin, modified plant fiber, zinc stearate, calcium stearate, polyethylene wax, 2, 6-butylated hydroxytoluene, acrylic acid and a chlorinated polyethylene-epoxidized soybean oil blend. The PVC resin provides basic strength and stability for the pipeline. The nano silicon dioxide on the surface of the modified plant fiber forms a physical barrier, the compatibility with PVC is enhanced through maleic anhydride grafting, the interface defects are reduced, the fiber dispersity is improved, and the mechanical performance is enhanced. The chlorinated polyethylene-epoxidized soybean oil blend forms a two-phase structure of a continuous phase and a dispersed phase, the diffusion path of VOCs is prolonged, a compact barrier system is constructed, in addition, the chlorinated polyethylene enhances the structural stability, and the epoxidized soybean oil optimizes interface bonding.

The invention relates to the technical field of bus ducts, and particularly provides a sealing plate assembly of a heat dissipation type bus duct connection area, which comprises a top plate, a bottom plate and two side plates arranged oppositely, the two side plates are arranged between the top plate and the bottom plate, and the two side plates, the top plate and the bottom plate enclose to form a connection area outer cover space. The top plate comprises lap joint sections located at the two ends of the top plate and a middle section located between the two lap joint sections, and the two lap joint sections are in lap joint with the outer sides of the tops of the adjacent bus duct sections respectively. A heat transfer path is formed between the closing plate assembly on the outer side of the connection area and the adjacent bus duct sections, heat generated in the operation process of the connection area can be diffused to the adjacent bus duct sections, the heat diffusion range is enlarged, local gathering of heat near the connection area is reduced, and the service life of the bus duct is prolonged. And the heat dissipation capability of the connection area is improved, and meanwhile, the sealing protection requirement of the connection area is considered.

This invention discloses a low-hydrogen flux-cored welding wire based on two-dimensional MXene surface self-assembly modification, its preparation method, and its application, belonging to the field of welding materials technology. The low-hydrogen flux-cored welding wire comprises a steel strip outer sheath and a flux core filled within it, the flux core being composed of metal alloy powder and modified composite flux core powder. Its preparation method includes: preparing a two-dimensional MXene colloidal dispersion using a chemical etching method; cationically modifying the insulating slag-forming powder; mixing the two and electrostatically self-assembling and coating them; after drying, mixing with the metal alloy powder; filling the steel strip; and rolling and drawing into shape. This invention constructs a three-dimensional continuous conductive network within the flux core through the MXene layer, improving arc stability; simultaneously, the MXene shell forms a physically water-blocking labyrinth, endowing the welding wire with ultra-low hydrogen characteristics; the active titanium released by the decomposition of MXene at high welding temperatures can refine the weld grains and improve mechanical properties. This welding wire can be widely used in automated gas-shielded welding processes for high-strength steel.

The invention discloses a waterproof barrier adhesive tape in an aircraft cabin and a preparation method thereof, and relates to the technical field of adhesives. When the waterproof barrier adhesive tape in the aircraft cabin is prepared, graphene oxide sequentially reacts with 2, 5-dimethyl-2, 5-hexanediol and 5-amino-4-imidazole formamide, and modified graphene oxide is prepared; the pre-modified polysiloxane is subjected to a reaction with dimethyl phosphorus and 1, 2-epoxy chlorobutane in sequence, and functional polysiloxane is prepared; the preparation method comprises the following steps: reacting polycarbonate diol, polyethylene glycol, hydroxyethyl methylacrylate, isophorone diisocyanate, 4, 5-bis (hydroxymethyl)-2-phenyl-1H-imidazole and bis (hydroxymethyl) phenylphosphine to prepare polyurethane particles, and carrying out extrusion casting to form a film; mixing a polyacrylate emulsion, functionalized polysiloxane and modified graphene oxide, coating a polyurethane film with the mixture, and drying to obtain the waterproof barrier adhesive tape in the aircraft cabin. The prepared waterproof barrier adhesive tape in the aircraft cabin has a good bonding effect and a good flame retardant effect.

This invention discloses a hydrocolloid material containing guaiac, its preparation method, and its application, belonging to the field of medical care materials technology. It includes a backing layer and a hydrocolloid functional layer. The hydrophobic elastomer matrix comprises polyisobutylene, styrene-isoprene-styrene block copolymer, tackifying resin, liquid paraffin, and optionally caprylic / capric triglycerides. The pre-wetted hydrophilic absorbent powder comprises sodium carboxymethyl cellulose, pectin, gelatin, calcium alginate, sodium alginate, and caprylic / capric triglycerides. The composite plant repair oil comprises a phellodendron amurense lipid dispersion, Lithospermum erythrorhizon-Angelica dahurica extract, borage oil, sandalwood seed oil, borneol, and DL-α-tocopherol. The guaiac nanoliposome lyophilized powder is obtained by sequentially coating a guaiac nanoliposome aqueous dispersion with quaternized chitosan and sodium hyaluronate, then adding a lyophilization protectant and freeze-drying. This invention solves the problems of poor dispersion stability, easy degradation, insufficient soothing and repairing ability of guaiac, and instability in oil-water blends.

This invention discloses a water-based acrylic anti-corrosion coating and its preparation method, belonging to the field of water-based coating technology. The coating consists of an intermediate component and a post-crosslinking agent component. The intermediate component includes group A of acrylate monomers, group B of a corrosion-inhibiting container composed of co-intercalated layered double hydroxides, end-sealing halloysite nanotubes, and phytic acid, group C of a magnetically responsive barrier system composed of polydopamine-coated two-dimensional fillers and magnetically responsive iron oxide, and group D of additives such as reactive emulsifiers. The post-crosslinking agent component is mixed with an aqueous solution of adipic acid dihydrazide before use. The monomers in group A undergo a three-stage emulsion polymerization to form a hard core-functional intermediate layer-self-crosslinking soft shell structure emulsion. During film formation, the two-dimensional fillers are oriented parallel to the substrate surface by a rotating magnetic field, forming a multi-level protection of passive shielding, interface passivation, and post-crosslinking curing, which improves adhesion, shielding properties, self-healing, and storage stability compared to existing coatings.

The application discloses a biomass-based carbon@iron oxide composite material and a preparation method and application thereof. The biomass-based carbon@iron oxide composite material is prepared from biomass, iron salt and ultrapure water through hydrothermal and calcination treatment. The biomass-based carbon@iron oxide composite material has a sheet structure, in which iron oxide particles are riveted on a carbon matrix. The diameter of the iron oxide particles is 16-28 nm, the BET specific surface area is 35.67-103.81 m2 / g, and the specific capacity is 1,000-1,500 mAh / g. 2 g ‑1 The biomass-based carbon@iron oxide composite material of the application is applied to lithium ion batteries, has the advantages of long cycle life, high specific capacity and the like, and is characterized by wide raw material sources, easy large-scale production, low price, safe operation, easy recovery of byproducts and green and pollution-free production.

The application belongs to the technical field of fertilizers, and particularly relates to a humic acid organic-inorganic compound fertilizer with slow release and improved fertilizer utilization rate and a preparation method thereof. The humic acid organic-inorganic compound fertilizer comprises the following raw materials in parts by weight: 22-30 parts of biogas residue, 35-55 parts of humic acid, 8-13 parts of fine columnar algae powder, 5-8 parts of urea, 12-17 parts of ammonium sulfate, 12-15 parts of superphosphoric acid calcium, 15-20 parts of potassium sulfate and 10-15 parts of slow release coating suspension. Test results show that the humic acid organic-inorganic compound fertilizer with slow release and improved fertilizer utilization rate prepared by the application can reduce the nitrogen and phosphorus release rates of the humic acid inorganic compound fertilizer, has better slow release effect, significantly promotes the plant height, stem diameter and root length of soybeans and corn, has obvious growth promotion effect, and has wide application prospect.

The present invention belongs to the field of material chemistry, and in particular to a barrier film and its preparation method and application. The barrier film provided by the present invention comprises a film substrate and a filler filled in the film substrate; wherein the film substrate is a polyurethane containing a soft segment, and the soft segment is a polydimethylsiloxane segment and a polyethylene glycol segment; the filler is a core-shell structure, the outer shell is titanium dioxide, the inner core is a natural mineral, and the shape of the inner core is sheet and / or rod; the filling amount of the filler in the barrier film is 30~65wt%. The barrier film provided by the present invention has both excellent light and heat control ability and gas barrier ability.

The invention relates to the technical field of materials, and discloses a tear-resistant flexible composite hose based on ultraviolet light curing and a preparation method thereof. The preparation method comprises the following steps: mixing the epoxy resin modified unsaturated polyester, the graphene / block copolymer composite material and a photoinitiator to prepare light-cured resin, and impregnating the glass fiber structure layer in the light-cured resin to obtain the ultraviolet light curing-based tear-resistant flexible composite hose. The composite hose has good tear resistance and flexibility when not subjected to light curing, construction is convenient, and after light curing, the waterproof and corrosion-resistant performance is excellent, and the mechanical property is good.