41 results about "Phytenic acid" patented technology

The invention relates to the field of film materials, and discloses a degradable antibacterial film material and a preparation method thereof.The film material comprises degradable matrix resin, a modified additive, a plasticizer and a lubricant; the modified additive is prepared by loading a natural antibacterial agent on a modified flame-retardant composite filler; the modified flame-retardant composite filler is prepared by reacting cinnamyl aldehyde with a flame-retardant composite filler and forming a complex with zinc acetate dihydrate; the flame-retardant composite filler is prepared by reacting epoxidized composite filler with 1, 5-naphthalene diamine and then further reacting with phytic acid; according to the invention, the natural antibacterial agent is loaded in the modified flame-retardant composite filler through a vacuum impregnation method, and the mechanical property, antibacterial property and flame-retardant property of the material are enhanced by adding the modifying additive, so that the flame-retardant and antibacterial composite material has the advantages that the flame-retardant and antibacterial properties of the material are improved, and the service life of the material is prolonged. Meanwhile, diffusion / permeation of gas and water molecules in the film is adjusted.

The invention provides an additive composition containing a bioactive enzyme and a preparation method of the additive composition, and belongs to the technical field of biological enzymes. The preparation method comprises the following steps: fixing phytic acid and cyclodextrin on hydroxyapatite, modifying with tannic acid, reacting with dithiothreitol modified lysozyme to prepare an immobilized compound, adding 2, 2-dimethoxy-2-phenylacetophenone and methyl methacrylate, and carrying out irradiation reaction with an ultraviolet lamp to prepare the additive composition containing the bioactive enzyme. The broad-spectrum antibacterial property and the antiviral property of the lysozyme are greatly improved, the sterilization effect on gram negative bacteria is obviously improved, meanwhile, the stability of enzyme is greatly improved, the enzyme is not prone to inactivation, the preservation time of the enzyme is prolonged, the application effect of the enzyme is widened, meanwhile, the lysozyme has good killing capacity on oral bacteria and viruses, the addition of preservatives is reduced, and the cost is reduced. The cleaning effect and stability of the product are improved, tooth demineralization can be prevented, decayed teeth can be prevented, and wide application prospects are achieved.

The invention relates to the technical field of ecological agriculture, and discloses a phytase fungicide fertilizer as well as a production method and application thereof. 1-10 parts of a phytase high expression strain; 1-8 parts of a phytase solution; 1.7 to 9 parts of an embedding material; 3-8 parts of pH buffer particles; 10-30 parts of a micro-carbon carrier; 0.02 to 0.10 part of an indoleacetic acid microcapsule; and 30-60 parts of humus powder. The invention further provides a production method of the phytase fungicide fertilizer. The method comprises the following steps: S1, performing liquid fermentation on a phytase high-expression strain; s2, mixing the thalli with an enzyme solution; s3, adding pH buffer particles into the embedded particles; s4, drying the granules in a spray drying manner; and S5, mixing the dried product with humus powder, and granulating. By constructing a microbial inoculum system containing a phytase high-expression strain, efficient activation and conversion of organic phosphorus resources are realized, and the release efficiency of the fertilizer to phosphorus resources is improved.

The invention belongs to the technical field of green prevention and control of agricultural pests, and particularly relates to application of a phytase gene set of orius guttatus in the aspect of RNAi-mediated pest prevention and control. The gene set comprises a gene RP382, a gene RP382L1, a gene RP382L2 and a gene RP382L3, amino acid sequences of proteins coded by the gene RP382, the gene RP382L1, the gene RP382L2 and the gene RP382L3 are sequentially shown as SEQ ID NO: 5-8, and nucleotide sequences of the gene RP382, the gene RP382L1, the gene RP382L2 and the gene RP382L3 are sequentially shown as SEQ ID NO: 1-4. According to the invention, through systematic analysis, four phytase gene family members are identified in the Eriomycorus lividus for the first time, and the phytic acid metabolism capability of pests is destroyed by interfering the expression of the genes, so that the death rate of the pest Eriomycorus lividus is obviously increased to 50%.

The invention provides a preparation method of a high-temperature-resistant graphite pipe for spectral analysis, and belongs to the technical field of spectral analysis, and the preparation method comprises the following steps: S1, preparing a high-purity graphite pipe matrix and carrying out surface activation treatment; s2, preparing composite sol, wherein the composite sol is formed by mixing silica sol, molybdate and phytic acid; s3, infiltrating the composite sol into the graphite matrix by adopting a vacuum-pressurization alternate impregnation process; s4, carrying out stepped heating heat treatment in an inert environment to form a SiC-MoSi composite reinforced phase; and S5, depositing a pyrolytic carbon layer on the inner wall of the graphite pipe. The silica sol, the molybdate and the phytic acid have a synergistic effect to form a SiC-MoSi composite phase, the phytic acid can prevent the molybdate from gathering and can promote the growth of SiC whiskers in heat treatment, so that the anti-oxidation temperature of the graphite pipe is increased, the temperature resistance and the heat stability of the graphite pipe are improved, and the anti-oxidation performance of the graphite pipe is improved. And finally, the use frequency of the graphite pipe is greatly increased.

The invention discloses a neutral phytase mutant as well as a gene and application thereof, and belongs to the technical field of enzyme engineering. The invention aims to solve the technical problems that the existing neutral phytase is poor in thermal stability, poor in acidic environment stability, narrow in pH application range, low in low-temperature catalytic efficiency and the like. According to the technical scheme, the phytase preparation PHY06 with high stability and the gene and application of the phytase preparation PHY06 are provided. The method comprises the following steps: carrying out T329G, D333V, T353F and A364F mutation on a PHY03 sequence of which the amino acid sequence is shown as SEQ ID NO.1, so as to obtain a mutant PHY06;

The invention provides an efficient fireproof aerogel steel structure coating and a preparation method thereof, and belongs to the technical field of fireproof coatings. The silicified polyacrylonitrile fiber three-dimensional network is constructed by combining pre-oxidation of the polyacrylonitrile fiber with vapor deposition and carbonization treatment, and excellent mechanical properties and heat-resistant stability are achieved; the light, high-strength, heat-resistant and flame-retardant composite hybrid aerogel is formed through the synergistic reaction of polyacrylonitrile fibers and tetraethoxysilane and the complexing action of boric acid, and the flame retardance and the structural stability are further enhanced through boric acid derivatives and two-step carbonization treatment; sodium lignin sulfonate and a melamine-phytic acid system are self-assembled, pores are filled, the free radical quenching efficiency is improved, and meanwhile, the toughness and impact resistance of the coating are enhanced through a supramolecular structure; the outer layer carbon-silicon aerogel and the inner layer expansion coating form double barrier, and the fire resistance and flame retardance of the coating are remarkably improved.

The invention relates to the technical field of cable materials, and provides an ultraviolet curing polyethylene cable material with high insulating property and a preparation process thereof. The polyethylene cable material is prepared from the following raw materials in parts by weight: 50 to 80 parts of first low-density polyethylene, 2 to 10 parts of second low-density polyethylene, 10 to 20 parts of high-density polyethylene, 5 to 15 parts of phytic acid-nano-TiO2 modified lignin, 1 to 4 parts of modified inorganic particle composite material, 1 to 4 parts of polyolefin elastomer, 0.5 to 1.5 parts of cross-linking agent, 0.5 to 1.5 parts of initiator and 0.2 to 0.8 part of antioxidant. The polyethylene cable material disclosed by the invention has the advantages of excellent mechanical property, aging resistance, insulating property and flame retardant property, high safety and long service life.

The invention discloses a phytase mutant AppA as well as a coding gene, a preparation method and application thereof. The phytase mutant AppA is obtained by mutating amino acids at the 137th site, the 185th site and the 255th site of wild type phytase AppA from asparagine, aspartic acid and tyrosine into valine, asparagine and aspartic acid respectively; the amino acid sequence and the nucleotide sequence of the gene are SEQ ID NO.1 and SEQ ID NO.2 respectively. The catalytic efficiency of the mutant enzyme AppA provided by the invention on sodium phytate is improved by 2.5 times compared with that of a wild enzyme AppA; under the condition of 70 DEG C, the half-life period of the mutant enzyme AppA is 3.4 times that of the wild enzyme AppA. The mutant enzyme AppA has the characteristic of high enzyme activity under a high-temperature condition, which indicates that the mutant enzyme AppA has an important application prospect in industrial production of a feed in which phytic acid needs to be degraded under the high-temperature condition.

The invention relates to the technical field of polymer coatings, in particular to a solvent-free permeation-resistant anti-corrosion polymer coating and a preparation method thereof. The invention relates to a preparation method of a solvent-free permeation-resistant anti-corrosion polymer coating. The preparation method comprises the following steps: preparation of an MXene nanosheet, preparation of a modified MXene filler, preparation of a slow-release corrosion inhibitor and preparation of a polymer coating. The double modified MXene and the slow-release corrosion inhibitor are adopted to synergistically improve the corrosion resistance of the coating. Modified MXene is subjected to intercalation modification by tannic acid and phytic acid, so that the modified MXene has physical barrier and chemical corrosion inhibition characteristics, the compatibility with a resin interface is enhanced, and the permeation resistance of a solvent-free coating is improved; according to the slow-release corrosion inhibitor, porous titanium-based oxide is used for loading MBT, slow release is triggered when the coating is damaged, active repairing is achieved, the pain point that a traditional coating is damaged and fails is solved, and the corrosion resistance in the severe environment is greatly improved.

This invention relates to the field of porous thermal insulation materials, and discloses a fireproof and heat-insulating material and its preparation method. The material is an aerogel comprising a polyimide framework, two-dimensional transition metal carbonitride nanosheets, and phytic acid. The aerogel contains multiple unidirectional, parallel tubular or layered channels, each surrounded by a pore wall. The pore wall is composed of a cross-linked network formed by chemical bonds connecting phytic acid, two-dimensional transition metal carbonitride nanosheets, and the polyimide framework. This invention uses phytic acid as a cross-linking agent and an in-situ catalytic charring agent, overcoming the defect of easy agglomeration of nanosheets and generating a dense carbonized layer upon heating, effectively supporting the pore walls and preventing the porous framework from collapsing. Combined with the heat conduction blocking effect of the unidirectional channels, the material exhibits excellent low thermal conductivity, high mechanical strength, and extremely stable high-temperature shrinkage insulation properties, making it suitable for fireproof and heat-insulating protection in extreme environments.

The utility model discloses a corn soaking water recycling device which comprises a primary pulp tank, a silicon carbide ceramic membrane filtration system, a light pulp tank, a continuous ion exchange system, a nanofiltration membrane filtration system, a slurry tank, a concentration tower, a drying tower and a protein storage tank which are communicated with one another, the continuous ion exchange system is also respectively communicated with a desorption agent storage tank and a phytic acid solution storage tank; the silicon carbide ceramic membrane filtering system comprises a first silicon carbide ceramic membrane assembly and a second silicon carbide ceramic membrane assembly which are connected in parallel, a first pneumatic valve and a first pressure gauge are arranged on a connecting pipeline of the first silicon carbide ceramic membrane assembly and the primary pulp tank, and a second pneumatic valve and a second pressure gauge are arranged on a connecting pipeline of the second silicon carbide ceramic membrane assembly and the primary pulp tank; the device further comprises a controller, and the first pneumatic valve, the first pressure gauge, the second pneumatic valve and the second pressure gauge are electrically connected with the controller. According to the device, the corn soaking water is treated, phytic acid and protein are recycled, wastewater in the treatment process is effectively recycled, and reasonable utilization of the corn soaking water is achieved.

The present invention relates to a polyelectrolyte complex consisting of chitosan and phytic acid, the method for producing said polyelectrolyte complex using mechanochemical synthesis and its use as an antimicrobial and antioxidant bio-fire-retardant additive for epoxy resins. Furthermore, the present invention relates to a material comprising said polyelectrolyte complex and a polymer, preferably an epoxy resin, an article coated with said flame retardant and an article having said flame retardant embedded therein. Therefore, the present invention is framed within the fireproof plastics industry with high anti-fire demands such as the automotive industry, aeronautics, construction or the electrical-electronic sector.

The application provides a composite microbial agent for decomposing soil insoluble phosphorus and an application thereof, and relates to the technical field of microorganisms. Active ingredients of the composite microbial agent include Xanthomonas campestris, Burkholderia cenocepacia and Burkholderia parafungorum. The three strains have the ability to dissolve Ca3(PO4)2, FePO4, AlPO4, lecithin and calcium phytate, and can synergistically dissolve the above-mentioned five kinds of insoluble phosphorus sources. The phosphorus solubilizing activity of the composite microbial agent after oscillation culture can reach 53.32 mg·L ‑1 , and the phosphorus solubilizing function is stable. Meanwhile, the composite microbial agent has the characteristics of degrading lignin, producing siderophores and indole acetic acid. When applied to the rhizosphere soil of plants, the composite microbial agent has a significant phosphorus solubilizing and growth promoting effect, and solves the technical problems of single type of phosphorus source dissolved by the phosphorus solubilizing bacteria in the prior art or poor stability of the phosphorus solubilizing function.

This invention relates to the fields of modified graphene technology and anti-corrosion materials technology, specifically to a modified graphene material and its preparation method, an anti-corrosion coating and its preparation method and application, and an anti-corrosion coating and its application. The modified graphene material includes graphene oxide and ammonium phytate grafted onto the surface of graphene oxide via amide bonds. The structural formula of the ammonium phytate is shown in formula (I). In formula (I), * represents the N-linked site in the amide bond; R1 is selected from one of the groups formed by removing two terminal amine groups from a C2-C10 alkylene group or an n-ethylene(n+1)amine, where n is an integer and 2≤n≤6. The modified graphene of this invention has the advantages of strong dispersibility in water-based coatings and strong adhesion to metal substrates. When applied to water-based anti-corrosion coating resins, it improves the adhesion, high barrier properties, and corrosion resistance of the coating.

The invention discloses a functionalized polythiophene composite electrode material and preparation and application thereof in uranium-containing wastewater treatment, and a preparation method comprises the following steps: mixing a phytic acid solution with a 3-acetic acid-thiophene solution to obtain a mixed solution; and carrying out electro-deposition, washing and drying by taking carbon paper as a working electrode, a platinum sheet as a counter electrode, a calomel electrode as a reference electrode and the mixed solution as an electrolyte to obtain an electrode coated with polyphytic acid-3-acetic acid-thiophene, namely the functionalized polythiophene composite electrode material. The invention solves the problems of low uranium reduction selectivity, low adsorption capacity, insufficient active sites and high material preparation cost of the existing adsorption material. The prepared electrode material structure has high selectivity and high adsorption capacity (greater than or equal to 1484 mg / g) on U (VI) in wastewater by virtue of excellent conductivity of polythiophene and the characteristic that P = O active sites can be regenerated in situ in an electric field, the adsorption rate is remarkably increased, and excellent electrochemical uranium extraction performance is shown.

The invention discloses a composite fireproof door and a preparation process thereof. The composite fireproof door comprises the following components: a galvanized steel plate, fireproof glass, a fireproof door core plate and a fireproof expansion sealing strip, the fireproof door core plate is prepared from expanded perlite, vermiculite, cement, a bio-based adhesive and water. Phenolic resin with high adhesive strength is obtained by adopting bio-based components, and then the phenolic resin and phytic acid are mixed to obtain the adhesive. The door core plate obtained after the adhesive and the filling material are mixed is applied to the fireproof door, and the obtained fireproof door is higher in mechanical strength and excellent in fireproof performance.

The invention belongs to the technical field of polyurea coatings, and particularly relates to a single-component high-performance polyurea coating and a preparation method thereof. The europium-doped molybdenum sulfide modified polyurethane resin is prepared from the following raw materials in parts by weight: 60 to 100 parts of diisocyanate, 30 to 50 parts of a diluent, 100 to 140 parts of polyether polyol, 0.3 to 0.5 part of a flatting agent, 0.6 to 1 part of a defoaming agent, 30 to 50 parts of a silane coupling agent, 30 to 35 parts of a chain extender, 3 to 5 parts of a catalyst and 10 to 20 parts of tin phytate coated europium-doped molybdenum sulfide, and 5 to 15 parts of Cu3P ZIF-7. According to the invention, by adding the europium-doped molybdenum sulfide coated with the tin phytate and the Cu3P ZIF-7 and utilizing the interaction of the components, the flame-retardant and mechanical properties of the polyurea coating are promoted to be remarkably improved, and the polyurea coating is excellent in performance and wide in application range.

The invention discloses a preparation method of phytic acid copper co-pyrolysis lignin graded porous carbon. The preparation method comprises the following steps: preparing a copper-phytic acid amorphous coordination polymer Cu-PA aCP template; preparing a composite precursor; performing pyrolysis carbonization and graded pore forming; and post-processing the product. According to the preparation method, Cu-PA aCP is originally used as a template, and the unique decomposition behavior of Cu-PA aCP in the pyrolysis process can be accurately induced to form a through macropore, mesopore and micropore hierarchical pore network, so that the problem that the pore structure cannot be controlled by a traditional method is effectively solved; according to the prepared hierarchical porous structure, the transmission path of electrolyte ions is greatly optimized, the diffusion resistance is remarkably reduced, and the specific capacitance, the rate capability and the cycling stability of the carbon electrode are greatly improved; when the lignin carbon is used as a zinc ion capacitor electrode, the energy density and the power density of the lignin carbon are superior to those of traditional lignin carbon.

The invention provides a high-strength degradable flame-retardant composite material as well as a preparation method and application thereof, and belongs to the technical field of degradable flame-retardant materials. The high-strength degradable flame-retardant composite material provided by the invention is prepared from the following raw materials in parts by mass: 72 to 85 parts of PET (Polyethylene Terephthalate), 0.2 to 0.5 part of a flame retardant, 1.0 to 1.5 parts of modified fibers, 12 to 20 parts of modified lignin, 5 to 10 parts of a compatilizer, 0.3 to 1.0 part of an antioxidant and 0.5 to 0.8 part of a lubricating agent, the modified fibers are fibers modified by a silicon flame retardant; the modified lignin is lignin modified by a coupling agent and phytic acid. The fiber and lignin are added to improve the mechanical property of the composite material, and the fiber and lignin are modified to improve the compatibility of the components and PET, so that the mechanical property is improved on the basis of improving the flame retardance of the composite material.

The invention relates to the technical field of water shutoff and profile control agents, in particular to a delayed crosslinking water shutoff and profile control agent for oil extraction and a preparation method thereof.The delayed crosslinking water shutoff and profile control agent is prepared from, by weight, 25-30 parts of modified polyacrylamide, 12-15 parts of composite crosslinking agent, 8-10 parts of stabilizer and 2-3 parts of deoxidant; by taking Na-montmorillonite as a carrier, loading a zirconium phytate organic cross-linking agent and introducing a Schiff base structure, the composite cross-linking agent has good slow-release delayed cross-linking performance through the slow-release effect of a nano material, and the problem that the blocking effect is reduced due to the fact that an existing water shutoff profile control agent is cross-linked in advance is solved; and modified polyacrylamide with a telechelic structure is synthesized, so that the plugging performance of the water plugging and profile control agent is further enhanced.

The invention provides a nitrogen-phosphorus co-doped carbon catalyst and a preparation method and application thereof, and belongs to the technical field of electric energy catalytic conversion. The method comprises the following steps: adding polyether F127, hexamethylenetetramine, phytic acid and 1, 3, 5-trimethylbenzene into a solution containing 3-aminophenol, and uniformly stirring to obtain a mixed solution; performing hydrothermal reaction on the mixed solution to obtain a reaction product; and calcining the reaction product to obtain the nitrogen and phosphorus co-doped carbon catalyst. The nitrogen-phosphorus co-doped carbon catalyst with mesoporous structures uniformly and orderly distributed on a solid sphere is prepared, the doping level of pyridine N is regulated and controlled through P doping, the content of pyridine nitrogen is increased, meanwhile, uniform and ordered mesopores are formed in the whole sphere, a developed pore structure is formed, exposed catalytic active sites are increased, and the catalytic activity of the catalyst is improved. And the directional adsorption of carbon dioxide is facilitated, so that the catalytic activity of the material is greatly improved, and the high-selectivity production of CO can be realized at lower overpotential.

The present invention discloses a stretchable polyaniline composite hydrogel based on ink direct writing 3D printing and its preparation method and application, which belongs to the field of flexible electronics and wearable devices. The preparation method of the polyaniline composite ink for ink direct writing 3D printing of the present invention comprises the following steps: (1) dissolving cellulose nanocrystals CNC in a phytic acid PA aqueous solution, adding polyvinyl alcohol PVA solution and aniline monomer, adding ammonium persulfate APS after mixing, and performing an in-situ polymerization reaction; (2) evaporating the product after polymerization in step (1) to remove 15-25wt% of water. The composite hydrogel material prepared by the ink 3D printing of the present invention has a uniformly and continuously distributed conductive cross-linked network and a high-precision flexible structure, and can be widely used in the personalized preparation of flexible sensor device materials.

The application discloses an antibacterial and breathable elastic fiber fabric and a preparation method and application thereof, and belongs to the field of high polymer fiber fabric preparation. The antibacterial and breathable performance and elasticity of the fiber fabric need to be further improved. The application is to prepare a fiber-forming elastomer containing a siloxane flexible chain segment, a disulfide bond unit and an unsaturated side group, to further prepare a bridged wetting functional body with a catechol group, a sulfur-containing group and a zwitterionic structure, and to construct an antibacterial and breathable finishing agent containing a silicon oxide network, a phytic acid-zinc coordination structure and a tannic acid multi-point binding action. The antibacterial and breathable elastic fabric is prepared through the synergistic action of the three. The antibacterial and breathable elastic fabric can consider the antibacterial property, the wetting property, the breathability and the elastic recovery performance of the fabric, and can improve the structural stability and the wearing comfort.

The application discloses a neutral phytase mutant, a gene thereof and application, and belongs to the technical field of enzyme engineering. The technical problem to be solved is that the existing neutral phytase has the problems of poor thermal stability, poor acid environment stability, narrow pH application range and low low-temperature catalytic efficiency. The technical solution is to provide a phytase preparation PHY06 with high stability, a gene thereof and application. The PHY03 sequence shown in the amino acid sequence of SEQ ID NO. 1 is subjected to T329G, D333V, T353F and A364F mutations to obtain the mutant PHY06.

The invention belongs to the field of nutriology, and particularly relates to a plant lactobacillus NuPlus-8 capable of synergistically promoting absorption of multiple mineral substances, a product and application. The plant lactobacillus NuPlus-8 disclosed by the invention is derived from healthy breast milk, has good acid-resistant and cholate-resistant characteristics, and can survive and keep activity in related environments of intestinal tracts. The strain has the effect of synergistically promoting absorption of eight nutrient substances including calcium, magnesium, zinc, selenium, iron, phosphorus, vitamin D and protein, and meanwhile promotes skeletal development; phytase can be secreted, phytic acid-mineral compounds can be degraded, combined calcium, magnesium, zinc, selenium, iron and phosphorus can be released, and the solubility and the availability of mineral substances can be improved; and transmembrane transport and absorption of intestinal epithelial cells to various minerals, VD and amino acids are significantly improved. The strain has a unique physiological function of synergistically promoting multi-nutrient absorption, can be used in products for improving nutrient absorption and utilization efficiency, and has remarkable application value and industrial prospect.

The present invention relates to the technical field of electromagnetic shielding technology, and discloses a porous carbon nanomaterial, a preparation method, and an electromagnetic shielding film; the preparation method of the porous carbon nanomaterial is to use iron citrate and phytic acid as carbon sources, add an activator, and obtain porous carbon through carbonization; the porous carbon and a nano-metal precursor are obtained through hydrothermal reduction. The porous carbon nanomaterial provided by the present invention uses iron citrate and phytic acid as raw materials, assisted by adding an activator, and adopts a direct carbonization method to prepare a porous carbon material with a large number of micropores inside, and its specific surface area and pore size can also be regulated by controlling the amount of the activator. Then, by utilizing the microporous structure and high specific surface area of the porous polymer, the nano-metal precursor is subjected to hydrothermal reduction to achieve the loading of a nano-metal with an ultra-high content, and effectively prevent the aggregation of nanoparticles, thereby achieving a nano-content of more than 40 wt%.

The application discloses a modified cellulose slurry, a preparation method thereof and application of the slurry in the field of diaphragms, and relates to the technical field of diaphragm materials. The slurry comprises 18-28 parts of calcium phytate polyphenol interface fiber, 28-40 parts of cellulose nanofiber, 8-15 parts of bleached wood pulp fiber, 10-18 parts of inorganic heat-resistant filler, 2-5 parts of polyvinyl alcohol, 0.4-1.2 parts of sodium carboxymethyl cellulose, 0.2-0.8 parts of polyvinylpyrrolidone, a wetting agent, a defoaming agent and deionized water. The interface fiber has a cellulose nanofiber core layer, a chitosan-tannic acid oxidation coupling interface layer and a calcium phytate anchoring phase. The slurry is step-by-step pulped and wet-film-formed to obtain a diaphragm, and the slurry can improve filler agglomeration and insufficient interface combination, and improve the thermal dimensional stability, mechanical properties, electrolyte wettability and ion transmission performance of the diaphragm.

This invention relates to the fields of polymer materials and textile engineering, and discloses a high-toughness polyester fabric and its preparation method. The fabric is composed of polyester fibers, a borate-aluminum phytate-silica doped modifier, hydroquinone, and various auxiliaries. The borate-aluminum phytate-silica doped modifier is composed of a dynamic network of borate esters formed by boric acid and polyvinyl alcohol, a coordination structure formed by phytic acid and aluminum ions, and silica doping. By constructing a synergistic reinforcement system with dynamic reconstruction capabilities and multi-point interfacial interactions, and combining this with the regulation of intermolecular forces by hydroquinone, the modified structure is uniformly distributed at the interface and within the polyester fibers, thereby significantly improving the fabric's elongation at break, impact resistance, fatigue resistance, and abrasion resistance. The method of this invention is simple, highly applicable, and yields a polyester fabric with excellent comprehensive performance and promising application prospects.

The application discloses a composite copper foil and a preparation method and application thereof, and relates to the technical field of copper foil, and discloses a composite copper foil which comprises a copper foil and a molecular-level dense protective film coated on the surface of the copper foil, wherein the copper foil has a nano-twin crystal structure, and the molecular-level dense protective film is formed by using a composite passivation solution containing phytic acid and tannic acid for treatment. The pulse electroplating and the immersion coating passivation process are highly compatible with the existing industrial production line, and thus, large-scale production can be realized without major equipment modification. More importantly, a significant synergistic enhancement effect is generated between the nano-twin crystal substrate and the bio-based passivation layer, so that the final product reaches an optimal balance in terms of multiple key performance indicators such as electrical conductivity, thermal stability, and bonding force with the base material, and a solution with leading comprehensive performance is provided.