1023 results about "Phytic acid" patented technology

The invention discloses a composite electrode material for removing uranium through photoelectrocatalysis and a preparation method and application of the composite electrode material, and belongs to the technical field of catalytic materials and wastewater treatment.The preparation method of the composite electrode material comprises the following steps that a ZIF-8 material, copper salt and ferric salt are mixed, and a first metal composite material is prepared; reacting the first metal composite material with a KOH solution to prepare a second metal composite material; carrying out carbonization treatment on the second metal composite material, and then carrying out acid treatment by using acid to obtain a bimetallic atom catalytic material; the preparation method comprises the following steps: dispersing a bimetallic atom catalytic material and a g-C3N4 material in a mixed solution containing phytic acid and a Nafion solution to obtain catalyst ink; and coating the catalyst ink on a substrate, and carrying out illumination drying to obtain the composite electrode material. According to the composite electrode material, under the synergistic effect of the bimetallic single atomic cluster catalyst and g-C3N4, respective advantages are fully exerted, and efficient deposition removal of uranium is achieved.

The invention belongs to the field of flame-retardant finishing of textiles, and discloses a phytic acid-based flame retardant and a preparation method of a flame-retardant cotton fabric. Natural phytic acid, polyethylene glycol, melamine and metal salt are used as main raw materials, the environment-friendly characteristic of a biomass material is combined, an efficient and environment-friendly flame retardant is prepared, the prepared flame retardant is arranged on a cotton fabric through a traditional impregnation method, and the flame retardance and smoke suppression performance of the arranged cotton fabric are greatly improved. The method not only has a good flame retardant effect, but also avoids potential hazards of a traditional flame retardant to the environment and human health, and has a wide application prospect. The flame-retardant cotton fabric can be widely applied to the fields of household textiles, protective clothing, fire-fighting equipment and the like, and has remarkable economic benefits and social benefits. The invention not only provides an efficient and environment-friendly flame retardant preparation method, but also opens up a new way for application of biomass materials in the field of flame retardance, and has important scientific significance and practical value.

The invention relates to the field of packaging materials, and discloses low-temperature heat-sealing water-based coated paper and a preparation method and application thereof.The water-based coated paper comprises a base paper layer and a water-based coating, and the water-based coating comprises water-based ethylene-acrylic acid copolymer emulsion, modified nano-silica, a coalescing agent and water; a cardanol derivative is introduced into the water-based ethylene-acrylic acid copolymer emulsion as a functional component; the cardanol derivative is prepared by reacting epoxidized cardanol with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide and then grafting with acryloyl chloride. The preparation method comprises the following steps: reacting epoxidized cardanol with 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; the modified nano silicon dioxide is prepared by mixing aminated nano silicon dioxide and chitosan and adding a cross-linking agent prepared by grafting phytic acid and ethylene glycol diglycidyl ether. The water-based coating paper prepared by the invention overcomes the defects that the existing BOPP film is not environment-friendly, and the conventional coating paper is high in heat sealing temperature and easy to stick; meanwhile, good mechanical properties, water resistance and flame retardance are achieved.

The invention belongs to the technical field of flame-retardant polyether polyol, and particularly relates to a preparation method and application of multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol. The preparation method of the multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol comprises the following steps: taking phosphorus-containing polyether polyol and a nitrogen-containing compound as composite initiators, and carrying out polymerization reaction on the phosphorus-containing polyether polyol and the nitrogen-containing compound and an epoxy compound under the self-catalysis action to obtain the reaction type anti-dripping flame-retardant polyether polyol. According to the preparation method of the multi-element synergistic reaction type anti-dripping flame-retardant polyether polyol provided by the invention, phosphorus, nitrogen and chlorine elements are embedded into the polyether polyol by constructing a ternary synergistic system, so that the problems of poor compatibility, migration and precipitation of an externally added flame-retardant system are solved; in the preparation process, low-cost bio-based phytic acid is adopted as a raw material, no catalyst needs to be introduced, the operation is simple, the prepared polyether polyol is used for preparing a waterborne polyurethane film, the flame-retardant characteristic of the material is improved, and meanwhile, the good anti-dripping characteristic is achieved.

The invention relates to the field of cosmetics, in particular to sea rice fermentation filtrate, a preparation method thereof and a whitening cosmetic. Inoculating the first fermentation seed solution and the second fermentation seed solution into a fermentation culture medium, fermenting at 25-30 DEG C to obtain a fermentation product, and removing thalli in the fermentation product; the fermentation culture medium is prepared from the following components in percentage by mass: 5 to 10 percent of sea rice powder, 1 to 5 percent of saccharides and the balance of water; the pH value of the fermentation culture medium is 4-5; the first fermentation seed solution is a saccharomyces cerevisiae strain fermentation seed solution; the second fermentation seed solution is a lactobacillus plantarum strain fermentation seed solution. The method can promote the growth of saccharomyces cerevisiae and lactobacillus plantarum while promoting the release of an active component phytic acid in the sea rice, and has a remarkable effect of removing excessive free radicals and inhibiting the activity of related enzymes for synthesizing melanin; therefore, the whitening effect of the cosmetic can be effectively improved.

The invention relates to the technical field of collagen peptide extraction, and particularly discloses aquatic collagen tripeptide and a processing technology thereof, and the processing technology comprises the following steps: step S1, fish skin pretreatment; step S2, performing enzymolysis; step S3, fermentation; step S4, separation and purification; starting from three aspects, firstly, a modified degreasing agent is added in the degreasing treatment process, the modified degreasing agent takes 1-ethyl-3-methylimidazole acetate, zinc phytate and calcium citrate as main components according to a specific mass ratio, and secondly, gel emulsion is added in the enzymolysis process, so that the modified degreasing agent is prepared. The gel emulsion has an oil gel structure, grape seed oil and sodium lignin sulfonate, and 3, a composite strain is added in the fermentation process, the composite strain is prepared by mixing bacillus natto and lactobacillus plantarum according to a specific proportion, and the purity and the extraction rate of the aquatic collagen tripeptide are improved through the synergistic effect of all the procedures.

The invention relates to a natural antioxidant for prefabricated vegetables and a preparation method of the natural antioxidant, and belongs to the technical field of food additives. The antioxidant is prepared from rosmarinic acid, carnosic acid, drug-loaded cellulose and double-phase chelating microspheres; the drug-loaded cellulose is prepared by modifying cellulose with quercetin, loading anthocyanin and then wrapping with a trehalose-gamma-polyglutamic acid composite film; the biphase chelating microspheres are phytic acid-citric acid biphase sustained-release microspheres formed by wrapping phytic acid and citric acid with a chitosan and sodium alginate composite film. Through multi-component functional complementation, multi-stage slow release design and physical-chemical synergistic barrier, comprehensive inhibition of the oxidation problem of the prefabricated vegetable is realized, a'free radical scavenging-metal chelating-phase interface stabilization 'triple protection system is constructed, accurate oxidation resistance in different stages of processing, storage and transportation is realized, and the prepared vegetable has good market prospects. The bottlenecks of short action period and single protection dimension of a natural antioxidant are broken through.

The invention relates to the technical field of aerogel, in particular to flexible flame-retardant aerogel and a preparation method thereof.The flexible flame-retardant aerogel is prepared from modified graphene, modified polyvinyl alcohol, silver nanowires, phytic acid and epoxy resin E-51; the furan group is introduced into the aerogel through the modified graphene, the furan group and the maleimide group are subjected to a D-A reaction, an adhesive is prevented from being used when the aerogel is bonded with a screen backboard, the D-A reaction is reversible, and lossless reworking can be realized. PVA and epoxy resin E-51 are added together, so that the heat resistance and mechanical strength of the material are improved. PVA is grafted with a large-steric-hindrance amine group, weak interaction with a furan group is generated, side reaction with an epoxy group of epoxy resin E-51 is avoided, and when aerogel is bonded to an OLED screen backboard, the protective layer is reversibly released, so that D-A reaction can be smoothly carried out. The hydrophobic treatment of the modified graphene and the modified grafting of the polyethylene to the mPEG can effectively improve the agglomeration of the modified graphene and ensure the uniform dispersion of the modified graphene.

The invention provides tartary buckwheat herbal baijiu and a preparation method thereof.The method aims at solving the problems that existing tartary buckwheat baijiu is lost in active ingredient, single in flavor and unstable in baijiu body, firstly, tartary buckwheat submicron powder, radix puerariae submicron powder and rhizoma polygonati submicron powder are put into Maotai-flavor base liquor together, and two-section type closed extraction is conducted at the normal temperature and then at the low temperature, adding a part of citric acid solution to adjust the pH at the initial stage of extraction; squeezing and filtering extract liquor, immediately adding bamboo leaf extract and phytic acid to carry out synergistic anti-oxidation treatment, and carrying out short-term aging; and finally, blending with the residual base wine. According to the preparation method disclosed by the invention, the retention rate of active ingredients such as tartary buckwheat flavone and the stability of the wine body are remarkably improved through staged extraction and dual antioxidant protection, the wine body is successfully endowed with coordinated baking fragrance, sauce fragrance and herbal flavor, and the taste is mellow and mild.

The invention relates to the field of coatings, and discloses a biomass-based oil-resistant coating and a preparation method thereof, the coating comprises an additive solution, a paraffin solution and gallic acid; the paraffin solution is obtained by dissolving paraffin in absolute ethyl alcohol; a preparation method of the additive solution comprises the following steps: mixing chitosan powder and an acetic acid aqueous solution to prepare a chitosan solution, ultrasonically dispersing functionalized montmorillonite in deionized water to prepare a suspension, then uniformly mixing the chitosan solution and the suspension, adding modified phytic acid prepared by grafting phytic acid and ethylene glycol diglycidyl ether, and stirring to react; the functional montmorillonite is prepared by modifying modified montmorillonite with titanium dioxide and zinc oxide, then activating the modified montmorillonite with 3-aminopropyltriethoxysilane and succinic anhydride, and then carrying out a ring-opening reaction with glycidyl neodecanoate. The coating prepared by the invention has high water resistance, the Kit oil-proof grade is kept at grade 12, and the oil-proof performance of the coating is greatly improved. Meanwhile, the antibacterial performance, the tensile index and the ultraviolet aging resistance are relatively high.

The invention discloses a flame-retardant thermoplastic polyurethane elastomer material and a preparation method thereof, and belongs to the technical field of modified nano materials. The preparation method comprises the following steps: dissolving melamine, phytic acid and boron nitride in deionized water, carrying out oil bath, adding a coupling agent, stirring, carrying out vacuum filtration, washing with water, and drying to obtain a layered nano flame retardant; the preparation method comprises the following steps: dispersing a flame retardant in deionized water containing a nonionic dispersant, and carrying out ultrasonic treatment; the preparation method comprises the following steps: reacting polyether polyol with diisocyanate to obtain a primary prepolymer; adding other auxiliary agents, stirring, and carrying out gradient heating polymerization; and injecting into a mold, curing for 6-12 hours at 105-125 DEG C, and drying for 12-24 hours at 80-90 DEG C. A phosphorus-nitrogen-silicon ternary synergistic flame-retardant system is introduced, the boron nitride nanosheet surface grafting and dynamic pre-polymerization-gradient heating process is optimized, the dispersity is improved, and smoke suppression and thermal stability are achieved. Compared with the prior art, the flame retardant efficiency is high, the mechanical property is excellent, and environmental friendliness is achieved.

The invention relates to the field of fabrics, in particular to a metallic yarn fabric based on a discontinuous aluminum layer and a processing technology thereof.The metallic yarn and polyester fibers are blended to serve as warps, the polyester fibers serve as wefts, the warps and the wefts are interwoven to obtain base cloth, the base cloth is subjected to discontinuous etching in the warp direction through etching liquid, and the pretreated base cloth is obtained; transferring the fabric into antibacterial finishing liquid for padding treatment to prepare the fabric. Modified waterborne polyurethane emulsion containing silicon and nitrogen elements is introduced into finishing liquid, polytetrahydrofuran glycol, hydroxyl-terminated polydimethylsiloxane and isophorone diisocyanate are used as raw materials, 2, 2-bis (hydroxymethyl) propionic acid is used as a hydrophilic chain extender, and cyanuric chloride derivative glycol based on menthol is used as a chain extender; the preparation method comprises the following steps: introducing nano zinc oxide as a finishing agent into a finishing liquid, firstly aminating the nano zinc oxide by using 3-aminopropyltriethoxysilane, then obtaining phytic acid modified nano zinc oxide by using electrostatic and hydrogen-bond interaction, and further grafting cyanuric chloride derivative diol based on menthol.

The invention discloses a multi-network anti-freezing hydrogel electrolyte, a preparation method thereof and application of the multi-network anti-freezing hydrogel electrolyte in an electrochemical device. The hydrogel is prepared by using polyvinyl alcohol (PVA) and polyacrylamide (PAM) to form a basic network skeleton, introducing phytic acid, ethylene glycol and lithium / zinc bimetal salt (Li2SO4 / ZnSO4), and carrying out thermal initiation polymerization and freeze thawing. The hydrogel prepared by the invention has a multiple physical cross-linked network formed by polymer molecular chain entanglement, hydrogen-bond interaction among functional groups and metal coordinate bonds constructed between phosphate groups and divalent metal ions, so that the hydrogel electrolyte has excellent mechanical properties. Due to introduction of ethylene glycol, formation of ice crystals is effectively inhibited, and the hydrogel is endowed with excellent anti-freezing performance; the high-concentration Li < + > and Zn < 2 + > ensure the high ionic conductivity. The supercapacitor assembled by using the hydrogel electrolyte shows relatively high specific capacitance and good capacitance retention rate under bending and freezing conditions, and has good electrochemical properties and safety performance.

The invention relates to the technical field of bacterium enrichment nutrient solutions, in particular to a bacterium enrichment nutrient solution for fermentation and a preparation method of the bacterium enrichment nutrient solution. The culture medium is prepared from the following raw materials in parts by weight: maltodextrin, crystalline glucose, low-pigment yeast extract powder, refined soy peptone, dipotassium phosphate, monopotassium phosphate, magnesium sulfate heptahydrate, sodium chloride, phytic acid, L-ascorbic acid, manganese sulfate monohydrate, biotin, thiamine hydrochloride and choline chloride. Through a double-carbon-source structure, maltodextrin and crystalline glucose cooperate, metabolic oscillation is avoided, and the energy utilization rate is increased; the low-pigment yeast extract powder and the refined soy peptone are complementary, so that the rapid growth requirement of thalli is met; phytic acid is chelated with metal ions to prevent precipitation, L-ascorbic acid is used for resisting oxidation, and biotin and thiamine activate a coenzyme pathway to realize accurate regulation and control of a metabolic network.

The invention discloses a preparation process of crocodile penis peptide wine for improving kidney deficiency, and relates to the technical field of biology, the process comprises the steps of raw material pretreatment, collaborative graded enzymolysis, starter propagation, sand feeding, sand roughening, starter addition and stacking fermentation, distillation for wine taking and fine adjustment. Wherein the synergistic graded enzymolysis adopts a mixed enzymolysis technology, lecithin and phytic acid are added, and natural pH gradient is combined, so that the problems of wine precipitation and taste layering are effectively solved, and the product stability and the polypeptide retention rate are improved. Meanwhile, a traditional Chinese medicinal material compound formula is fused in the process, and the health-care effect is enhanced through the synergistic effect of enzymolysis and fermentation. The wine can significantly increase the content of testosterone in serum and the physical endurance, and improve the symptom of kidney deficiency. The method is mature in process, high in product quality and suitable for large-scale production.

The invention discloses an environment-friendly flame-retardant polyvinyl alcohol film and a preparation method thereof, and relates to the technical field of polyvinyl alcohol films. The polyvinyl alcohol film is prepared from the following components in parts by weight: 90 to 110 parts of polyvinyl alcohol, 0.4 to 1.2 parts of polydopamine modified cellulose nanocrystals, 8 to 15 parts of chitosan / phytic acid / boron nitride composite flame retardant and 0.6 to 0.9 part of plasticizer. The preparation method comprises the following steps: adding polyvinyl alcohol into deionized water, dissolving and mixing to obtain a polyvinyl alcohol aqueous solution, adding glycerol, continuously stirring for 1-2 hours, sequentially adding a chitosan / phytic acid / boron nitride composite flame retardant and polydopamine modified cellulose nanocrystals, and uniformly stirring and mixing at 50-70 DEG C to obtain a blended solution; and carrying out film casting on the blended solution. The limit oxygen index of the film is greater than or equal to 30%, the vertical combustion grade is V-0, the tensile strength is greater than or equal to 40%, the elongation at break is greater than or equal to 140%, and the light transmittance is greater than or equal to 85%.

The embodiment of the invention discloses a Yarrowia guilliermondii as well as a separation and screening method, an identification method and application of the Yarrowia guilliermondii. The preservation number of the Yarrowia guilliermondii is CGMCC (China General Microbiological Culture Collection Center) No.27603, and the preservation number of the Yarrowia guilliermondii is CGMCC No.27603. The Yarrowia guilliermondii disclosed by the embodiment of the invention has a very good prevention and control effect on postharvest diseases of fruits, and the prevention and control effect of the Yarrowia guilliermondii on the diseases can be enhanced by respectively adding auxiliary factors, namely calcium chloride, alginate oligosaccharide (AOS), phytic acid (PA) and metschhia yeast. Through identification, the antagonistic bacterium is a Yeyrozyma guilliermondii, and the antagonistic bacterium is a Yeyrozyma guilliermondii. The M.guilliermonii has a good control effect on gray mold, penicilliosis, black spot and aspergillus niger of strawberry, apple, pear and tomato fruits, can be rapidly colonized on fruit wounds, and can enhance the resistance-related enzyme activity of the fruits, occupy the wound space and induce the fruit resistance to reduce the morbidity of diseases.

The invention discloses a green construction of a porous separation membrane and an efficient uranium separation / enrichment method thereof.The method comprises the steps that firstly, mixed-dimension attapulgite clay acid etching powder is modified through phytic acid and then added into a saponin plant extracting solution, and then the mixture is mixed with a sodium alginate-chitosan double-network matrix; a film-forming solution with a high-mechanical-stability gas-liquid interface is obtained through a Pickering foam template method, and then the porous separation film is controllably constructed through cooperative strategies such as film casting, calcium cross-linking and carboxylation. Based on the advantages of a rod / sheet mixed dimension structure of minerals, synergistic interaction of plant derivatives and a spatial orientation regulation and control synergistic mechanism of functional groups, a porous separation membrane with a specific porous structure, excellent mechanical properties and uranium separation efficiency is constructed in a green manner, and the uranium separation efficiency is improved by combining optimization of membrane layer stacking and elution strategies. A high-efficiency uranium separation / enrichment method is developed, and a new normal form is provided for solving uranium pollution prevention and control and resource recovery and enrichment by a membrane separation technology.

The invention discloses a chromium-free fingerprint-resistant coating agent for a galvanized steel sheet and a preparation method of the chromium-free fingerprint-resistant coating agent. The chromium-free fingerprint-resistant coating agent is prepared from the following elements in percentage by mass: 1%-5% of sodium molybdate or / and sodium tungstate, 0.5%-2% of a phytic acid-chitosan compound, 0.3%-1.0% of a chelating titanate coupling agent, 2%-5% of fluorosilane modified nano SiO2, 30%-55% of waterborne hyperbranched polyurethane resin, 0.5%-2% of oxidized polyethlene wax and the balance of deionized water. The chromium-free fingerprint-resistant coating agent disclosed by the invention has excellent fingerprint resistance, high adhesive force and environmental protection property, is free of white rust in neutral salt mist for 150 hours and red rust in neutral salt mist for 360 hours, the white rust area is less than 5%, the industrial requirements of galvanized steel sheet surface treatment are met, and the problem of environmental risk in the prior art is avoided by adopting the combination of bio-based corrosion inhibitors.

The invention discloses a high-efficiency enzymatic fermentation soy sauce production process, and relates to the technical field of soy sauce production processes, the high-efficiency enzymatic fermentation soy sauce production process comprises the following process steps: S1, material preparation, S2, material steaming, S3, inoculation, S4, fermented grain preparation and fermentation, S5, squeezing, and S6, sterilization and filling. The high-temperature-resistant amylase is added in the material steaming process, starch on the surfaces of the wheat and soybean meal raw materials is preliminarily decomposed, the starchy raw material can be decomposed in advance, growth of the aspergillus oryzae raw material in starter propagation is facilitated, clinker can be prevented from caking and being sticky, and the looseness of the starter material is improved; papain is added in the starter propagation process, and protein in wheat and soybean meal raw materials is continuously decomposed by aspergillus oryzae protease in starter propagation, so that the protein raw materials are quickly decomposed in advance, the growth of the aspergillus oryzae raw materials in starter propagation is facilitated, and the fermentation period is shortened; the compound clarification enzyme is added during fermentation to decompose intermediate products such as phytic acid, cellulose and the like which cause a large amount of aggregation after the raw soy sauce is heated, the clarification speed is high after the soy sauce is sterilized, and the precipitation amount is reduced by 50%-70%.

The invention relates to a soil remediation complex microbial inoculant composition and a preparation method thereof, and belongs to the technical field of soil remediation. Comprising the following raw materials: 10-15 parts of a microbial complex inoculant, 40-50 parts of a porous carrier, 20-25 parts of an organic matter and 3-5 parts of a surface protective agent, wherein the porous carrier is obtained by treating diatomite with phytic acid and polylysine. Paenibacillus polymyxa, trichoderma harzianum, bacillus subtilis and azotobacter chroococcum are taken as a microbial compound inoculant, modified diatomite is taken as a porous carrier, and the microbial compound inoculant is mixed with organic matters under the action of a protective agent, so that the soil remediation compound inoculant composition which can effectively improve soil and is excellent in strain activity is obtained.

The invention discloses a flame-retardant modified long glass fiber / polypropylene compound and a preparation method thereof, and relates to the technical field of high-molecular polymers. The preparation method comprises the following steps: adding modified carbon fibers and modified long glass fibers into a synergistic solution, uniformly mixing, drying, adding modified polypropylene particles, uniformly stirring, blending, extruding, cooling with water, and pelletizing to obtain the flame-retardant modified long glass fiber / polypropylene compound. The components such as gamma-aminopropyltriethoxysilane, trihydroxymethyl phosphorus oxide and phytic acid are introduced into the synergistic liquid, so that the flame retardance and thermo-oxidative aging resistance of the flame-retardant modified long glass fiber / polypropylene compound can be effectively improved; the modification process of the carbon fibers and the long glass fibers further improves the flame retardance and thermo-oxidative aging resistance of the flame-retardant modified long glass fiber / polypropylene compound. Therefore, the method has a wider application prospect.

The invention provides modified zirconium silicate whisker reinforced aluminum oxide ceramic as well as a preparation method and application thereof, and belongs to the technical field of new materials. The preparation method comprises the following steps: modifying the surface of alumina powder with a silane coupling agent with sulfydryl to generate zirconium silicate in situ, uniformly mixing the zirconium silicate with zirconium silicate whiskers which are treated by hydrogen peroxide and modified by phytic acid and tannic acid and a CeO2-Y2O3-MgO-SiO2 compound, and performing spark plasma sintering to obtain the modified zirconium silicate whisker reinforced alumina ceramic. The modified zirconium silicate whisker reinforced aluminum oxide ceramic prepared by the invention has better interface bonding force, excellent mechanical properties and good wear resistance, realizes ceramic densification, and has wide application prospects.

The invention discloses preparation of a phosphate radical modified carbon quantum dot nickel-based catalyst and application of the phosphate radical modified carbon quantum dot nickel-based catalyst in alkaline seawater electrolysis, and belongs to the technical field of hydrogen production through electro-catalysis and seawater electrolysis. The preparation method of the phosphate radical modified carbon quantum dot nickel-based catalyst comprises the following steps: mixing citric acid and urea in water to obtain a carbon quantum dot precursor solution; and mixing the carbon quantum dot precursor solution, phytic acid and a nickel substrate, and reacting to obtain the phosphate radical modified carbon quantum dot nickel-based catalyst. The phosphate radical modified carbon quantum dot nickel-based catalyst is designed by introducing a composite modification layer of carbon quantum dots and phosphate radicals on the surface of a nickel substrate, and the phosphate radical modified carbon quantum dot nickel-based catalyst has an obvious promotion effect on the OER activity through the synergistic effect of PO4 groups and CDs in the phosphate radical modified carbon quantum dot nickel-based catalyst; therefore, the catalyst can show excellent oxygen evolution reaction activity and long-term stability in alkaline seawater containing Br <-> and Cl <->.

The invention relates to the technical field of recovery and regeneration of waste lithium ion battery materials, in particular to a method for synchronously realizing selective extraction of lithium and direct regeneration of iron phosphate. The method comprises the following steps: providing positive electrode powder of the waste lithium iron phosphate battery; a hydrogen bond donor and a hydrogen bond acceptor are mixed, heated and stirred to obtain the eutectic solvent, the hydrogen bond donor is one or more of formic acid, acetic acid, propionic acid, pyruvic acid, phytic acid and citric acid, and the hydrogen bond acceptor is ethylene glycol; adding water into the deep-eutectic solvent for dilution, then adding the positive electrode powder and an oxidizing agent, heating and stirring, and filtering to obtain a lithium-containing leaching solution and leaching residues; carrying out concentration treatment and impurity removal treatment on the lithium-containing leachate, and then adding a saturated sodium carbonate solution to carry out lithium precipitation reaction to obtain lithium carbonate; and calcining the leaching residues to obtain iron phosphate. According to the method, the specific eutectic solvent is adopted to treat the positive electrode powder of the waste lithium iron phosphate battery, and selective extraction of lithium and direct regeneration of iron phosphate can be synchronously realized under mild conditions.

The invention belongs to the technical field of flame retardance and antibiosis, and particularly relates to a flame-retardant and antibiosis composition for bamboos, flame-retardant and antibiosis bamboos, a preparation method and application, the flame-retardant and antibiosis composition for bamboos comprises the following components by weight: 5-8% of ammonium phosphate, 5-8% of nucleoside phosphate, 3-5% of phytic acid or phytate, 3-6% of urea, 1-3% of amino acid, and 8-12% of a hydroxyl-containing material; and the balance of water. The hydroxyl-containing material is one or more of soluble nano cellulose, a Tris reagent, sorbitol and erythritol; on the basis of keeping the original color of the bamboo, the flame-retardant and antibacterial effects of the bamboo are improved.

The invention discloses an efficient anticorrosive coating and a preparation method thereof, and relates to the technical field of coatings. The high-efficiency anticorrosive paint is prepared from a crosslinked membrane modified phytic acid loaded aluminum MCM-41 mesoporous silica composite synergistic filler, a polyurethane / epoxy resin composite emulsion system, titanium dioxide, a BYK-190 dispersing agent, a BYK-021 defoaming agent, a BYK-358N flatting agent, a BYK-425 thickening agent, hydroxyethyl cellulose and deionized water. A cross-linked membrane modified phytic acid loaded aluminum MCM-41 mesoporous silica composite synergistic filler is uniformly dispersed and deeply embedded into a polyurethane / epoxy resin composite emulsion system, countless chemical anchor points are established between the filler and a base material, and the interface bonding property with a resin system is also enhanced, so that the adhesive force of the coating is greatly improved, and meanwhile, the coating has the advantages that the service life of the coating is prolonged, and the service life of the coating is prolonged. And an active and passive three-dimensional protection system formed by the two is used for remarkably improving the corrosion resistance of the coating in the action modes of intelligent response, active repair and physical barrier.

The present invention relates to a bimetallic layered hydroxide / phytic acid synergistic flame-retardant nylon 6 composite material and its preparation method and application, belonging to the technical field of flame retardant material synthesis. The composite material is prepared from nylon 6, bimetallic layered hydroxide and phytic acid. Wherein, the phosphate functional group in the phytic acid can chelate with the metal ion in the bimetallic layered hydroxide, thereby forming a novel flame retardant. When combustion occurs, the layered structure and thermal decomposition products such as metal oxides, metal phosphates, and carbon-containing aromatic network structure substances in the flame retardant help to suppress the release of smoke and toxic gases, and the release of metal ions and phosphorus-containing free radicals helps to suppress the spread of fire. Compared with pure nylon 6, the peak heat release rate and total heat release rate of the composite material are greatly reduced, the limiting oxygen index is greatly increased, and the vertical combustion test reaches V-0 level. At the same time, the raw material sources in the preparation method of the composite material are abundant, the operation is simple, and it is suitable for scaled-up production.

The invention provides a lime-sand polymerized building material for inhibiting saltpetering and a preparation method thereof, and belongs to the technical field of novel building materials, the material comprises a composite matrix material, a composite alkali activator, a slow-release organic acid microcapsule, a modified layered double-metal hydroxide and an saltpetering inhibiting auxiliary agent; the composite base material is formed by compounding fly ash and slag; the composite alkali activator is compounded by water glass and a NaOH aqueous solution; the slow-release organic acid microcapsule is prepared by coating a compound acid formed by mixing citric acid and tartaric acid with hydroxypropyl-beta-cyclodextrin and sodium alginate; the modified layered double hydroxide is prepared by calcining MgAl-LDH, then carrying out surface modification by a silane coupling agent, and then loading nano SiO2; the saltpetering inhibition auxiliary agent is compounded by phytic acid modified lignin microcapsules and thermal response carbonate; the phytic acid modified lignin microcapsule is prepared by modifying sodium lignin sulfonate with phytic acid and then coating with ethyl cellulose and polyvinyl alcohol; the thermal response carbonate is prepared by coating calcium carbonate with stearic acid.

The invention discloses a full bio-based PHA (polyhydroxyalkanoate) liquid bioplastic emulsion and a preparation method thereof. The emulsion takes polyhydroxyalkanoate (PHA) as a matrix, alkyl polyglycoside, fermented glycolipid and a bio-based nonionic surfactant are compounded with pullulan, alginate or micro-nano cellulose to serve as a stable system, and plasticizers such as acetyl tributyl citrate and citric acid, phytic acid or tannic acid are added to serve as compacting agents. The solid content of the emulsion is 35-58%, the volume average particle size D50 is 0.12-0.90 [mu] m, the absolute value of Zeta potential is not less than 30 mV, and the content of volatile organic compounds (VOC) is not higher than 50 g / L; fluorine-containing organic matters are not artificially added, and the total organic fluorine is less than or equal to 100ppm. The overall bio-based carbon content of all organic components in the formula is not lower than 95% according to mass weighting calculation. The invention also provides application of the emulsion in the fields of paper barrier coatings, heat-sealing adhesives and non-woven fabric finishing.