63results about How to "Extended Diffusion Path" patented technology

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 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 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 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 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 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 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.

The invention relates to the technical field of waterproof coatings, and discloses an environment-friendly polymer cement waterproof coating and a preparation method thereof.The environment-friendly polymer cement waterproof coating is composed of a liquid material and a powder material according to the mass ratio of 1: 0.8-1.1, and the liquid material is prepared from acrylic emulsion, a coalescing agent, a defoaming agent, an inorganic modified material, a functional compound and water; the powder material comprises the following raw materials: cement, quartz sand, ground calcium carbonate, sodium stearate, wollastonite and a water reducing agent; by adding the inorganic modified material, the prepared waterproof coating has excellent waterproof performance, a water molecule diffusion path is prolonged, and water molecule permeation is effectively delayed; by adding the functional compound, the prepared waterproof coating has excellent bonding strength and ultraviolet resistance, can be tightly combined with a bonded base material, can still keep stable performance under long-term ultraviolet irradiation, and has long service life.

This invention relates to the field of corrosion protection, specifically to a wear-resistant and corrosion-resistant material and coating, their applications, and a wear-resistant and corrosion-resistant paint, its preparation method, and applications. The wear-resistant and corrosion-resistant material of this invention includes a wear-resistant and corrosion-resistant coating, the composition of which includes: epoxy resin, phenol-modified graphene, filler, nonionic dispersant, and curing agent; the epoxy resin includes phenolic epoxy resin and bisphenol A epoxy resin; the phenol-modified graphene includes graphene oxide and phenolic substances formed on the graphene oxide. The wear-resistant and corrosion-resistant paint of this invention has advantages such as good stability, good brushing performance, and simple construction process; the prepared coating exhibits excellent wear resistance, good acid / alkali resistance, strong adhesion, and good toughness.

A lithium-ion battery electrode, a preparation method thereof, and a lithium-ion battery are disclosed. The electrode includes a current collector and n electrode plate layers laminated on the current collector, n being an integer greater than or equal to 2. The electrode plate layer contains a pore-forming agent. A content of the pore-forming agent in the electrode plate layers gradually increases along a direction gradually away from the current collector. The pore-forming agent is selected from an electrolyte solution additive which is solid at normal temperature.

The invention discloses an epoxy resin anti-collision, anti-corrosion and wear-resistant material and a preparation method thereof, and the invention relates to the technical field of epoxy resin materials, comprising the following components in parts by weight: 2.5-4 parts of anti-corrosion filler, 1.8-2.5 parts of wear-resistant filler, 25-30 parts of epoxy resin, 10-15 parts of diluent, 1.5-2 parts of defoamer, and 1.5-2 parts of toughening agent; the diluent is a mixed solution of xylene and n-butanol in a volume ratio of 1:2. The epoxy resin anti-collision, anti-corrosion and wear-resistant material and a preparation method thereof, because graphene oxide itself has a two-dimensional flaky structure, bears a certain load in the epoxy resin matrix, disperses stress, and at the same time, modified zirconium oxide particles have higher hardness and strength, and the two act synergistically, so that the modified zirconium oxide fills the gap between the graphene oxide sheets, making the internal structure of the material more compact, reducing the penetration channel of corrosive substances, thereby improving the anti-corrosion performance of the epoxy resin.

The invention discloses a method for preparing a high-entropy silicide composite coating on the surface of an Nb521 alloy through a single-step slurry melting method and application, and relates to the technical field of high-temperature alloy thermal protection. The method comprises the following steps: uniformly mixing refined Nb powder, Mo powder, Cr powder, Ta powder, W powder, Zr powder, Hf powder, Y powder, Ge powder and a cosolvent through ball milling to obtain slurry I; si powder, Cr powder, V powder, Fe powder and Ti powder are subjected to ball milling and mixed to be uniform, and slurry II is obtained; and a separation coating method is adopted, the slurry I and the slurry II are sequentially brushed or dip-coated on the surface of an Nb521 alloy matrix, heat treatment is conducted for 30-90 min at the temperature of 1450-1550 DEG C, and then the high-entropy silicide composite coating is obtained on the surface of the Nb521 alloy. The refractory high-entropy metal silicide composite protective coating with metallurgical bonding and high compactness is prepared by adopting a staged slurry permeation sintering method of a metal framework and a silicon source.

The invention discloses a preparation process of an ivermectin waste liquid liquid fertilizer, and relates to the technical field of liquid fertilizers. When the ivermectin waste liquid liquid fertilizer is prepared, nitric acid, urea and tetrabutyl titanate react to prepare nano titanium dioxide; performing ultrasonic treatment on nano titanium dioxide and lanthanum nitrate to obtain a waste liquid treatment agent; the preparation method comprises the following steps: reacting cellulose with pentenedioic acid and N, N-methylene bisacrylamide to prepare modified cellulose; treating the ivermectin waste liquid by using a flocculating agent to obtain pretreated ivermectin waste liquid, treating the pretreated ivermectin waste liquid by using a waste liquid treating agent, and adding the modified cellulose to obtain the ivermectin waste liquid liquid fertilizer. The ivermectin waste liquid liquid fertilizer disclosed by the invention has good water retention and slow release effects and has a good degradation rate.

The invention discloses a high-barrier polyester bottle-grade slice and a preparation method thereof, and belongs to the technical field of polyester. The invention discloses a preparation method of 4, 4 '-dihydroxy 4, 4 '-diaminostilbene and succinic anhydride react to prepare a third monomer containing an amido bond, a benzene ring and an unsaturated double bond, the third monomer, terephthalic acid and ethylene glycol are subjected to esterification and polycondensation reaction under the action of a catalyst, sulfydryl modified cellulose / montmorillonite is added into a polycondensation reaction system, and a polyester bottle-grade slice finished product is prepared. Double bonds in a stilbene structure of the third monomer and benzene rings on the two sides form a pi-pi conjugated system, the rigidity of polyester molecular chains is enhanced, amido bonds and ester bonds of polyester can form strong hydrogen bonds, the acting force between the molecular chains is improved, the introduced unsaturated double bonds react with sulfydryl of sulfydryl modified cellulose / montmorillonite under the high-temperature condition, and the sulfydryl modified cellulose / montmorillonite has the high-temperature resistance. The polymer and the sulfydryl modified cellulose / montmorillonite have a synergistic effect, so that the polyester bottle-grade slice has high barrier property.

The invention discloses kaolin-graphene composite aqueous slurry and a preparation method thereof. The preparation method comprises the following steps: S1, proportioning and mixing: mixing kaolin and amorphous carbon powder to obtain a solid mixture; s2, conductive networking and forming: adding a conductive auxiliary agent into the solid mixture obtained in the step S1, uniformly mixing, and then tabletting or granulating the mixture to obtain a to-be-treated blank; s3, ultrafast carbon heat treatment: carrying out ultrafast carbon heat treatment on two ends of the to-be-treated blank obtained in the step S2 in a negative pressure environment to obtain a composite filler; and S4, wet dispersion pulping: adding the composite filler obtained in the step S3 into a water-phase dispersion medium, and carrying out high-speed shearing dispersion, so as to obtain the kaolin-graphene composite water-based slurry. The waterborne epoxy anticorrosive coating has the advantages that stable dispersion and constructability can be realized in a waterborne system, and a multi-scale layered shielding network is constructed in a coating film, so that the barrier property and durability of the waterborne epoxy anticorrosive coating are improved.

The invention provides a jujube fruit cracking prevention film agent as well as a preparation method and a use method thereof.The jujube fruit cracking prevention film agent is prepared from the following raw materials in parts by mass: 1-5 parts of a polyvinyl alcohol solution, 1-5 parts of a polyacrylamide solution and 0.5-1 part of a modified oxidized humic acid solution; wherein the polyvinyl alcohol solution is prepared from the following components in parts by mass: 1 to 5 parts of polyvinyl alcohol, 0.1 to 0.5 part of cross-linking agent and 50 to 120 parts of water; the polyacrylamide solution is prepared from the following components in parts by mass: 1 to 5 parts of polyacrylamide, 0.1 to 1 part of hydrophobic monomer and 80 to 150 parts of water; the modified oxidized humic acid solution is prepared from the following components in parts by mass: 1 to 2 parts of modified oxidized humic acid, 0.05 to 0.1 part of calcium salt, 0.05 to 0.1 part of phosphorus salt, 0.05 to 0.1 part of silicon fertilizer, 0.05 to 0.1 part of borax, 0.05 to 0.1 part of growth promoting agent and 30 to 80 parts of water. The jujube fruit cracking prevention film agent can prevent jujube fruit cracking.

This invention relates to the field of polymer compound technology, specifically to an antibacterial food-grade plastic product for sealing and preservation and its preparation method, comprising an outer support layer and an inner antibacterial layer. The outer support layer is prepared by melt blending raw materials such as PBAT, PLA, and modified nano-calcium carbonate, wherein the mass ratio of PBAT to PLA is 90-100:10-20. The inner antibacterial layer is composed of nano-chitosan, tea polyphenols, essential oil microcapsules, glycerol, and agarose, composited on the surface of the outer support layer. The essential oil microcapsules have a core-shell structure, loading plant essential oils onto mesoporous silica as a carrier, and are coated with calcium alginate on the outer layer. The antibacterial food-grade plastic product prepared by this invention possesses long-lasting antibacterial properties, excellent mechanical properties, and heat-sealing strength, and has broad application prospects in the food packaging field.

The invention relates to a structural battery based on integration of a honeycomb composite material and an electrochemical energy storage unit. According to the structural battery, a force bearing function and an electric energy storage function are combined. According to the battery, a bionic honeycomb composite material is adopted as a matrix, and a lithium ion electrochemical unit is embedded into the matrix, so that the multifunctional structure battery with high mechanical strength and excellent electrochemical performance is formed. The honeycomb composite material is used as a carrier and an ion transmission channel of an electrode active material, and is also used as a bearing structure of a mechanical load. According to the design, the energy density, the safety and the cycle life of the battery are remarkably improved, and the battery is particularly suitable for the fields of electric automobiles, aerospace and the like with relatively high requirements on light weight and space utilization rate.

The invention discloses a continuous plastic dipping production process for C-shaped steel, and relates to the technical field of building materials. The C-shaped steel continuous plastic dipping production process comprises the steps that a core material is fed into heating equipment to be preheated; the preheated core material is fed into an inner tank of a boiling tank to be subjected to powder soaking, and then powder homogenizing is conducted through an outer tank of the boiling tank; the core material obtained after powder uniformizing is fed into a feeding area to be heated and fused, then cooling is conducted, a fully-wrapped plastic dipping layer is formed on the core material, and C-shaped steel is obtained; wherein the plastic dipping layer at least comprises modified polyethylene or modified polyvinyl chloride. According to the C-shaped steel continuous plastic dipping production process, continuous production is achieved, efficiency is improved, the plastic dipping labor intensity is reduced, port full protection and corrosion prevention are achieved, the corrosion prevention effect of the C-shaped steel surface is improved, and the problem that a port is prone to rusting is solved.

The application relates to the technical field of rare earth catalysts, in particular to a high-efficiency nickel-containing nanometer catalyst and a preparation method and application thereof. The preparation method of the high-efficiency nickel-containing nanometer catalyst comprises the following steps: a pre-prepared carrier is obtained by coordination of tetraethyl orthosilicate and carboxyl-terminated polyamide amine; nickel nitrate and yttrium nitrate are added into anhydrous ethanol and stirred uniformly, the pre-prepared carrier is added into the mixture and ultrasonically treated, the pH value of the system is adjusted and stirred, centrifugation, washing, vacuum drying and crushing are carried out to obtain pre-prepared materials; the pre-prepared materials are calcined at 450-500 DEG C, naturally reduced to room temperature, and reduced by introducing a reducing gas in a tube furnace and reduced to room temperature. The application has high-dispersed nickel active sites and a carrier microenvironment, the stable carrier structure endows the catalyst with outstanding anti-sintering and anti-carbon deposition capacity, guarantees the durability of long-term operation, has an excellent application prospect, and is suitable for large-scale popularization and application.