157 results about "Calcium alginate" patented technology

The invention provides a photo-thermal evaporation material based on black titanium dioxide as well as a preparation method and application of the photo-thermal evaporation material. The preparation method comprises the following steps: mixing urea, absolute ethyl alcohol and tetrabutyl titanate into a solution A, mixing absolute ethyl alcohol, ultrapure water and hydrochloric acid into a solution B, dropwise adding the solution B into the solution A, mixing to form a white colloid, heating in a water bath, drying, and calcining in a nitrogen atmosphere to obtain black titanium dioxide powder; the preparation method comprises the following steps: fully mixing a certain amount of black titanium dioxide, sodium alginate and ultrapure water to form a uniform dispersion liquid, dipping the pretreated polyurethane sponge in the dispersion liquid, and crosslinking with a calcium chloride solution to prepare the photo-thermal evaporation material of the black titanium dioxide-calcium alginate composite hydrogel. The photo-thermal evaporation material breaks through the photo-thermal application bottleneck of traditional titanium dioxide, has excellent evaporation rate and seawater desalination performance, and can effectively remove various printing and dyeing wastewater to obtain clean water.

The invention relates to the technical field of soil amendments, in particular to a soil amendment containing earthworm enzymatic hydrolysate and a preparation method of the soil amendment. The soil conditioner containing the earthworm enzymatic hydrolysate comprises the following components: earthworm enzymatic hydrolysate microcapsules and adjuvant particles in a mass ratio of (2-4): 1, the earthworm enzymatic hydrolysate is prepared by performing enzymolysis on fresh earthworm homogenate by compound enzyme, and the compound enzyme comprises cellulase and protease; the wall material of the earthworm enzymatic hydrolysate microcapsule comprises at least one of chitosan, calcium alginate, gelatin and Arabic gum; the auxiliary agent comprises humic acid and inorganic natural minerals. According to the soil conditioner containing the earthworm enzymatic hydrolysate, the earthworm enzymatic hydrolysate is wrapped by the microcapsules, the retention rate of active ingredients in the earthworm enzymatic hydrolysate can be remarkably increased, and the soil condition can be further improved by matching with humic acid and inorganic natural minerals for use.

The application discloses a degradable cotton soft towel and a preparation method thereof, relates to the technical field of fiber composite materials, and belongs to the patent classification D01F8 / 02. The preparation method comprises the following steps: performing alkali treatment and enzymolysis on Egyptian long-staple cotton fibers to obtain pretreated cotton fibers, and preheating, stretching and setting poly-caprolactone fibers to obtain pretreated poly-caprolactone fibers; mixing and opening the two kinds of fibers, and then air-laying to form a fiber web; constructing a super water-absorbing network by impregnating a main network solution carboxymethyl chitin and oxidized cellulose nanofilament and an auxiliary network dispersion liquid calcium alginate gel microspheres and a hyaluronic acid crosslinking body; forming micron protrusions through hexagonal nickel template hot pressing, and obtaining a base by electrostatic spraying modification of nano silicon dioxide; and obtaining the cotton soft towel through vacuum drying, slitting and sterilization after spraying of an essence liquid. The cotton soft towel has excellent water absorption performance through the synergistic effect of multistage pores, a super water-absorbing network and micro-nano surface modification, and the poly-caprolactone fibers and the cotton fibers used in the cotton soft towel are mixed, and both have good biodegradability.

The invention relates to the technical field of sewage treatment, and particularly discloses a high-porosity slow-release microelement anti-mineralization sulfur autotrophic denitrification filter material and a preparation method thereof. The sulfur autotrophic denitrification filter material is of a core-shell structure, a complex of sulfur, volcanic rock micro powder and a curing fungicide is used as an inner core, and a hydrophobic polymer coating layer and a porous ceramic bonding layer are sequentially coated on the surface of the inner core; the hydrophobic polymer coating layer is a hydrophobic breathable composite film formed by crosslinking a polydimethylsiloxane prepolymer and calcium alginate. The volcanic rock natural trace elements are utilized to realize waste control by waste, surface mineralization is effectively prevented through the hydrophobic middle layer, the activity of the microbial inoculum is protected in combination with a low-temperature flexible sintering process, and the whole device has the advantages of high porosity, light weight, quick start, long service life, low backwashing energy consumption and the like. Compared with the prior art, the invention has remarkable innovativeness and creativity in the aspects of structural design, material selection and process integration.

The invention belongs to the field of functional polymer materials, and particularly relates to a temperature-sensitive core-shell moisture absorption microsphere based on a biomass source and a preparation method. The preparation method comprises the following steps: dissolving methyl cellulose in water to prepare a solution A; dissolving calcium lactate and LiCl in water according to a mass ratio of 1: (2-14) to prepare a solution B; uniformly mixing the two to obtain functionalized core liquid; and dropwise adding the core liquid into a sodium alginate coagulating bath to carry out ionic cross-linking reaction to form gel microspheres, and washing and freeze-drying to obtain the product. According to the invention, a stable structure with moisture absorption salt / temperature-sensitive methyl cellulose as a core and calcium alginate gel as a shell is constructed in one step through a reverse instillation molding technology. The structure can effectively prevent moisture absorption salt from leaking, efficient release of moisture can be achieved at the low temperature by means of the temperature-sensitive characteristic of methyl cellulose, and desorption energy consumption for taking water from air is remarkably reduced. The raw materials are green, the process is simple, and the prepared microspheres are good in moisture absorption performance, high in cycling stability and suitable for atmospheric moisture collection.

The invention relates to the technical field of adsorption materials, in particular to a high-performance seaweed carbon fiber material based on microsphere phase change and a preparation method of the high-performance seaweed carbon fiber material. The method comprises the following steps: carrying out component separation on a seaweed raw material to construct a core-shell structure microsphere phase change unit which takes calcium alginate microspheres as a shell and seaweed active polysaccharide as a phase change medium, introducing sulfonic cellulose nanocrystals and polyacrylonitrile to be blended to prepare a composite spinning solution, dispersing the microsphere phase change unit into the composite spinning solution, and preparing the composite spinning solution. After electrostatic spinning, catalytic carbonization and water vapor activation, the seaweed carbon fiber material is finally prepared, a sulfonic acid group effectively catalyzes a polyacrylonitrile cyclization reaction in the carbonization process, the compactness of a carbon skeleton is remarkably enhanced, and the sulfonic acid group and a microsphere phase change unit generate a multi-stage synergistic enhancement effect, so that the material has ultrahigh strength and high adsorbability at the same time; the technical problem that the mechanical property and the adsorption property of the biomass carbon fiber are difficult to consider at the same time is solved.

The invention relates to the technical field of radiotherapy auxiliary instruments, in particular to an injectable calcium sodium alginate hydrogel spacer for radiotherapy and a preparation method of the injectable calcium sodium alginate hydrogel spacer. Nano calcium carbonate is used as an adjusting switch, an adjustable mechanical and degradation performance foundation of the hydrogel is laid, and the material is endowed with unique bifunctional characteristics through the synergistic effect of the nano calcium carbonate, a contrast agent iodized oil and a degradation liquid diethylenetriamine pentaacetic acid. The hydrogel can quickly form gel after being injected, keeps long-term structural stability and clear CT imaging capability in vivo, and can monitor the position and form of the hydrogel in a lossless manner; and when the radiotherapy period is finished, the on-demand and rapid degradation of the hydrogel can be realized only by injecting the diethylenetriamine pentaacetic acid, so that the risk of long-term retention is avoided. In-vitro and in-vivo experiments prove that the material has good biocompatibility, can significantly reduce the radiation dose of normal tissues such as rectum and the like, realizes the technical span from invisibility and difficult degradation to visibility and degradability, and has great clinical transformation value.

The application discloses a kind of magnetically responsive hydrogel optical fiber and its preparation and application, belong to medical biomaterial field.The optical fiber includes from inside to outside: polyethylene glycol diacrylate and acrylamide photocrosslinking light transmission core layer;Calcium alginate low refractive index skin layer;Doped nano-magnetic response layer of ferriferrous oxide;And polydopamine grafting polyvinylpyrrolidone lubricating layer.It is prepared by coaxial extrusion and light / calcium step-by-step crosslinking.The structure realizes the spatial isolation and anti-interference of light transmission and magnetic drive, has low background light loss and anti-bending stability, has biomechanics matching, ultra-low friction and magnetic field accurate active navigation ability, solves the pain point that extremely soft optical fiber is difficult to directional intervention.Suitable for deep tissue precise photothermal therapy, in vivo continuous optical sensing and minimally invasive diagnosis and treatment integration and other frontier medical fields.

The invention provides a wet response directional self-cleaning down-proof fabric, a preparation method thereof and a down feather product, the preparation method of the wet response directional self-cleaning down-proof fabric comprises the following steps: S1, adding polyester polyurethane and microcapsules into an organic solvent to obtain a spinning solution; the microcapsule comprises a photocatalyst and a shell layer wrapping the photocatalyst, the shell layer comprises a component A and a component B, the component A comprises at least one of gelatin, Arabic gum, carrageenan and starch, and the component B comprises calcium alginate; s2, a knitted fabric serves as a receiving substrate, the spinning solution is subjected to electrostatic spinning, drying and hot pressing, the knitted fabric contains cellulose fibers, and the mass percentage content of the cellulose fibers in the knitted fabric is larger than 50%. The down-proof fabric capable of conducting moisture in one direction can be prepared, moisture of a quilt is accumulated on one side of the nanofibers in the using process, the self-cleaning function is triggered in the moisture accumulation state, and the down-proof fabric has the advantages of being breathable and soft.

The invention belongs to the technical field of tert-butylamine preparation, and particularly relates to a preparation process for synthesizing tert-butylamine by adopting methyl tert-butyl ether. The preparation process comprises the following steps: preparing calcium alginate microspheres; preparing an SAPO precursor solution; performing composite crystallization; preparing an SAPO-11 carrier; preparing an ammonium type SAPO-11 carrier; preparing a metal supported catalyst; preparing an activated catalyst; methyl tert-butyl ether and liquid ammonia are used as raw materials, and tert-butylamine is prepared under the catalysis of an activated catalyst. According to the preparation process for synthesizing the tert-butylamine by adopting the methyl tert-butyl ether, the process of catalytically synthesizing the tert-butylamine by taking the methyl tert-butyl ether and the ammonia as raw materials follows an acid catalytic cracking nucleophilic addition coupling mechanism, and the prepared hierarchical pore CuZn / HSAPO11 catalyst remarkably reduces the reaction activation energy through the synergistic effect of B acid, L acid and metal active sites; high-activity and high-selectivity catalytic conversion at low temperature is realized, and high-purity tert-butylamine is prepared.

The invention discloses a metal ion induced alginate aerogel fiber as well as preparation and application thereof. The method comprises the following steps: pre-mixing a sodium alginate solution with a coagulating bath solvent to obtain a uniform spinning solution; extruding the spinning solution into an alcohol coagulating bath through wet spinning to form sodium alginate primary gel fibers; then, introducing the nascent fiber into a calcium ion cross-linking solution with a specific concentration for cross-linking and curing; and finally, drying at normal temperature and normal pressure to obtain the calcium alginate aerogel fiber. The method is simple in process and low in cost, and the obtained fiber has wide application prospects in the fields of adsorption separation, heat insulation, tissue engineering and the like.

The application discloses a sleep drink with emotion regulation function and a preparation method thereof, and comprises the following steps: taking GABA as a core, and coating an enteric layer to obtain GABA enteric microcapsules; embedding GABA-producing probiotics in calcium alginate gel microspheres to obtain probiotic microcapsules; mixing unembedded GABA, the GABA enteric microcapsules and the probiotic microcapsules with a liquid drink base, and adopting a double-dose packaging to obtain the sleep drink; in the application, a three-component design of immediate-release GABA, enteric-slow-release GABA and fast-release probiotic microcapsules is adopted to construct a two-stage delivery system, and the problem that when GABA and GABA-producing probiotics are simply combined in the same drink, the two cannot realize the dual functions of fast-acting and long-acting maintenance due to the non-synchronization of the action time of the two in the body is solved.

This invention discloses a probiotic liquid core ball cultured under polysaccharide confinement, its preparation method, and its application in improving children's intestinal flora. Belonging to the field of probiotic preparation technology, it employs an extrusion method combined with calcium alginate cross-linking technology, using xanthan gum and other thickening polysaccharides to optimize the types and concentrations of polysaccharides to construct the confinement space. The effects of different oxygen conditions on the encapsulation of different proportions of *Lactobacillus rhamnosus* LRa05 and *Bifidobacterium animalis* BLa80 were investigated to obtain the optimal probiotic liquid core ball cultured under polysaccharide confinement. This process is simple, uses safe raw materials, and after confinement culture, the viable bacteria count is ≥10⁹ CFU / g. It can directionally increase the abundance of beneficial bacteria in children's intestines, inhibit opportunistic pathogens, enhance flora diversity and stability, and is suitable for children's dietary scenarios, providing a safe and efficient intestinal flora regulation solution.

This invention discloses a method for cultivating Spirulina, relating to the field of microalgae biotechnology, aiming to overcome the shortcomings of existing technologies in terms of low Spirulina biomass yield and protein content. The method includes: in a first cultivation stage, inoculating Spirulina into a basal culture medium and conducting photoautotrophic cultivation at a light intensity of 5000-10000 lux until the optical density (OD560) reaches 0.6-0.8; in a second cultivation stage, reducing the light intensity to 1000-3000 lux and adding calcium alginate-encapsulated sodium bicarbonate microspheres, cultivating until the algal cell dry weight reaches 1.5-2.0 g / L; in a third cultivation stage, increasing the light intensity to 8000-12000 lux and adding sodium nitrate slow-release granules supported on anion exchange resin. This invention can achieve a synergistic increase in Spirulina biomass dry weight and protein content.

The invention relates to a macadamia nut flower and fruit retention synergistic method which comprises the following steps: in the early stage of flower bud differentiation, annularly applying slow-release granules to the root of a macadamia nut tree, and spraying fructan emulsion to the crown at the same time; in the early flowering period, a water dispersible sustained release preparation containing microencapsulated compound sodium nitrophenolate is sprayed to tree crowns of macadamia nuts, sodium alginate embedded borax sustained release microsphere suspension liquid is sprayed to leaf surfaces, and a hydrogel complexing agent containing sustained release monopotassium phosphate and amino acid is sprayed to the leaf surfaces; in the full-bloom stage, a composite slow-release emulsion containing liposome-embedded compound sodium nitrophenolate and brassinolide is sprayed to tree crowns of the macadamia nuts, slow-release gel microsphere suspension liquid of borax and amino acid is sprayed to leaf surfaces, and slow-release nano-emulsion containing beta-cyclodextrin-embedded bee wax volatile substances is sprayed to the tree crowns; in the initial fruit setting stage, sulfur-coated slow-release compound fertilizer is applied to the roots of macadamia nut trees, and ionic cross-linked calcium alginate microsphere embedded amino acid slow-release foliar fertilizer is sprayed to the leaf surfaces of the macadamia nut trees.

The application discloses a high-stability immobilized mannanase and a preparation method and application thereof, and belongs to the technical field of enzyme immobilization. The preparation method uses PAMAM modified SBA-15 / calcium alginate composite microspheres as a carrier to fix mannanase in an enzyme solution by adopting an embedding-covalent crosslinking method, so as to obtain the high-stability immobilized mannanase. The preparation method uses the PAMAM modified SBA-15 / calcium alginate composite microspheres as the carrier to fix the mannanase by adopting the embedding-covalent crosslinking synergistic method, so that the pH tolerance, the circulation stability and the hypoglycemic efficiency of the enzyme are improved, and the problems of the traditional immobilized enzyme, such as large enzyme activity loss, easy leakage and poor stability under high temperature, are solved.

The invention belongs to the technical field of traditional Chinese medicine preparations, and provides a pharmaceutical composition for recurrent urinary tract infection and a preparation method thereof. According to the invention, a compound extract for warming yang, promoting diuresis and activating blood and baicalin are synergistically compounded in an ion composite network formed by sodium alginate and chitosan, and are subjected to shear dispersion or homogenization treatment to form ion composite nanoparticles, and then the ion composite nanoparticles are subjected to calcium chloride cross-linking solidification and chitosan coating to prepare a multi-layer synergistic carrier design of the pellet; the dispersion uniformity, the forming strength, the pH response release and the storage stability of the ionic composite nanoparticles under the condition of high drug loading capacity are realized, and the core contradiction that the mechanical strength, the in-vivo swelling response release and the low-water-content storage and transportation stability are difficult to consider at the same time in the existing calcium alginate carrier system is solved; the method has wide clinical application value in comprehensive prevention and treatment of recurrent urinary tract infection.

This invention discloses a natural polysaccharide-based multilayer composite encapsulated probiotic and its preparation method, relating to the field of functional food and microbial preparation technology. This invention provides metabolic substrates for the probiotics through a probiotic-prebiotic co-encapsulation core located in the innermost layer, enabling them to maintain physiological activity during encapsulation. The first anionic polysaccharide encapsulation layer uses sodium alginate, which forms a three-dimensional gel network in a calcium-ion-containing curing solution. In the acidic environment of the stomach, the carboxyl groups in the calcium alginate gel undergo carboxylation, and the network shrinks and densifies, effectively blocking the invasion of hydrogen ions and pepsin, thus physically isolating the probiotics from gastric juice. When the encapsulated probiotics enter the small intestine and colon, the chitosan in the second pH-responsive composite encapsulation layer undergoes a conformational change due to amino deprotonation. Simultaneously, phosphate and citrate ions in the outer environment exchange ions with calcium alginate, achieving a triggered release of the probiotics in the colon.

The invention discloses a moisture power generation fabric, a preparation method and application. Comprising hygroscopic fibers and conductive fibers, and the hygroscopic fibers and the conductive fibers are interwoven with each other. The hygroscopic fibers are formed by cotton fibers or calcium alginate fibers loaded with lithium chloride or sodium phytate; the conductive fiber is composed of a polyester fiber with the surface modified with graphene, MXene or PEDOT: PSS. The problem that a functional layer is easy to fall off in a traditional coating method is solved, and the washing fastness of the fabric is remarkably improved. The moisture power generation fabric is soft and breathable, and has a wide application prospect in the field of intelligent wearable equipment.

The present application provides a kind of ship hull barnacle protection net.The support layer of the protection net is nanofiber membrane with micron pit array formed by laser etching, the inside is attached to the adhesive made of modified dopamine-acrylate copolymer, nano-silica, calcium alginate microspheres, chitosan, chitin nanofiber, lanolin and antioxidant, and the outside is compounded with stainless steel wire mesh.The present application realizes long-term inhibition of barnacles through the physical barrier of the hydrophobic support layer and the synergistic effect of the antifouling components in the adhesive without adding toxic antifouling agents, and has the characteristics of firm bonding, excellent mechanical properties, environmental protection and non-toxicity, effectively solves the problems of poor antifouling effect, insufficient bonding reliability and poor environmental protection of existing protection materials, and is suitable for barnacle protection of underwater parts of ship hull.

The application belongs to the field of environmental governance, and provides a water sodium manganese ore-oxygen releasing agent composite type sediment repair material and a preparation and application method thereof, which comprises modified oxygen releasing agent, water sodium manganese ore, microbial flora and embedding matrix, the embedding matrix comprises calcium alginate, polyvinyl alcohol and water cross-linked formed hydrogel, wherein the microbial flora comprises domesticated aerobic denitrification and phosphorus removal mixed flora.The water sodium manganese ore-oxygen releasing agent composite type sediment repair material utilizes the photoelectric catalytic activity of water sodium manganese ore and the oxygen releasing ability of oxygen releasing compound, improves the oxidation-reduction potential of sediment, enhances the sustained degradation ability of organic pollutants, cooperatively removes nitrogen pollutants in water environment, enhances the in-situ repair effect of sediment, is applied to sediment repair, and is more efficient, environment-friendly and has long-term effect.

The invention belongs to the technical field of medical dressings, and discloses a recombinant human collagen combined nano-silver ionic liquid-containing dressing and a preparation method thereof. The invention discloses a liquid dressing. Comprising the following raw materials: 8 to 15 parts of polyvinyl alcohol, 3 to 6 parts of calcium alginate, 1 to 3 parts of polydimethylsiloxane, 0.1 to 0.5 part of an antibacterial agent, 2 to 5 parts of bioactive protein, 1 to 4 parts of sodium hyaluronate, 2 to 5 parts of chitosan, 0.5 to 2 parts of tranexamic acid, 0.3 to 1 part of polypeptide, 0.2 to 0.8 part of an anti-inflammatory agent, 0.5 to 1.5 parts of ethylhexylglycerin, 10 to 20 parts of glycerin, 0.5 to 1.2 parts of carbomer, 0.1 to 0.3 part of biguanide hydrochloride and 40 to 60 parts of deionized water. The comprehensive improvement of the liquid dressing on the aspects of antibiosis, repair promotion, stability and safety is realized. All the components are matched to achieve the effects of broad-spectrum antibacterial property, healing time shortening and activity protection. Temperature gradient control, microwave activation and high-pressure homogenization are adopted in the process, the compatibility of all the raw materials is improved, the dressing is stable in physical performance, free of layering during storage and high in safety, and the requirements for skin wound protection and repair are met.

The invention provides a preparation method of calcium alginate microspheres with uniform size, which comprises the following steps: S1) heating and mixing first edible oil and a first surfactant to obtain an oil phase; mixing sodium alginate with water to obtain a water phase; s2) respectively introducing the water phase and the oil phase into a crisscross microchannel to obtain a water-in-oil microsphere; and S3) curing the water-in-oil microspheres in a curing liquid to obtain the calcium alginate microspheres. Compared with the prior art, the preparation method has the advantages that the oil phase and the sodium alginate aqueous solution are sheared in the intersection channel to form the water-in-oil microspheres, then the water-in-oil microspheres are subjected to the curing reaction in the turbid liquid containing the calcium chloride microemulsion, and finally the calcium alginate microspheres are obtained, so that collision fusion after the water-in-oil microspheres are generated is reduced; therefore, the obtained calcium alginate microspheres have the characteristics of round and uniform shape, uniform size and high curing speed, meanwhile, the operation is simple, and the preparation cost is low.

The application relates to the embedding technical field, and particularly discloses a double emulsion gel bead embedding beta-carotene and probiotics and a preparation method thereof. The double emulsion gel bead comprises a composite layer, an oil phase and an inner water phase from outside to inside. The composite layer comprises an outer water phase and calcium alginate which are fused with each other. The outer water phase comprises a product after carrageenan and sodium caseinate are subjected to a Maillard reaction. The oil phase comprises beta-carotene, vegetable oil and a food emulsifier. The inner water phase comprises probiotics. In the gel bead, the beta-carotene and the probiotics are simultaneously embedded in the double emulsion gel bead, the calcium alginate hydrogel shell starts to decompose when entering the intestinal tract, then the double-layer emulsion is slowly decomposed after being subjected to chemical digestion of pancreatic juice, bile and small intestinal juice and mechanical digestion of the small intestine in the small intestine, and the beta-carotene and the probiotics are gradually released, the beta-carotene is converted into vitamin A in the intestinal tract and is absorbed, and the probiotics are delivered to the colon to play a probiotic effect.

A silane-modified epoxy resin-based underwater remediation material comprises: silane-modified epoxy resin, PEG-PAA graft copolymer, mussel biomimetic adhesive, hydrophobic nano-kaolin, hyperbranched polyester, carbon nanotube / montmorillonite hybrid material, temperature-controlled microcapsule material, cashew phenol-modified amine curing agent, nano-calcium carbonate whiskers, calcium alginate / PAM dual-network material, cellulose nanofibers, organic bismuth catalyst, and heavy calcium carbonate; this application also includes its preparation and application methods. The silane-modified epoxy resin-based underwater remediation material of this invention can form a strong and reliable bond in an underwater environment, exhibits a high thixotropic index, a low chloride ion diffusion coefficient, and strong resistance to water erosion, meeting the requirements for underwater use and construction; it also meets environmental protection requirements, reducing harm to the environment and construction personnel, and achieving green and environmentally friendly construction.

The application discloses a paper-based microfluidic intelligent wound monitoring bandage based on a laser-induced graphene electrode array and a preparation and signal processing method thereof. The bandage comprises a calcium alginate / zinc oxide antibacterial base, a wax-printed paper-based lateral chromatographic microfluidic channel layer, a CO2 laser direct writing LIG multifunctional electrode array, a colorimetric indication area, an NFC wireless communication module and a silver nanowire electrically controlled drug release module. The LIG electrode is fixed and modified by enzymes to detect uric acid, lactic acid, glucose and pH value respectively; the paper-based colorimetric disc detects bacterial protease and TNF-alpha; the NFC radio frequency field provides energy to realize battery-free operation. The built-in signal processing method comprises temperature compensation, cross interference elimination, multi-parameter fusion infection risk scoring and double-threshold closed-loop drug delivery decision. The preparation process mainly uses laser direct writing, screen printing and ion crosslinking, has low material cost and is green and environmentally friendly, and is suitable for closed-loop monitoring and treatment of chronic wounds at home and in clinic.

The present application relates to inorganic cementing material, solid waste resource utilization and soil solidifying material technical field, specifically relates to a kind of preparation method of micro-nano solid waste base soil solidifying agent.It aims at solving the technical problems of single function and insufficient durability in prior art.The present application grinds granulated blast furnace slag and calcium silicate hydrate seed together, to obtain modified slag micro powder;Steel slag and fly ash are ultrafine ground to obtain steel slag-fly ash composite micro powder;Preparation mesoporous nano slag-biochar composite core, after impregnation load sodium metasilicate and nano zero-valent iron, in turn deposit calcium alginate-cystosine intermediate shell layer and silane coupling agent modified nano silicon dioxide and nano waste concrete recycled micro powder composite outer shell layer, to obtain multi-layer coated active particle;Silicon dioxide, sodium sulfate and nano calcium hydroxide are ball milled into composite activator;The above components are compounded with dispersion stabilizer under inert gas protection.

The invention relates to the technical field of curtain manufacturing, in particular to a flame-retardant environment-friendly curtain fabric laminating composite material and a preparation method thereof.The flame-retardant environment-friendly curtain fabric laminating composite material is prepared from, by weight, 22-26 parts of filler, 50-60 parts of waterborne polyurethane emulsion, 1-2 parts of dispersing agent and 0.5-1.5 parts of thickening agent. According to the invention, the powder and the additive are coated by the calcium alginate gel, sodium sulfate and borax in the powder can release crystal water when being heated, and a flame-retardant barrier is formed by absorbing heat, cooling and diluting combustible gas, and in addition, the reed straw in the additive is treated to form a biomass charcoal material, so that the flame-retardant effect of the biomass charcoal material is improved. Glucose is oxidized by nitric acid and then reacts with melamine to form a compact expanded carbon layer, good heat insulation and oxygen isolation effects are achieved, molten drops are inhibited, flame spreading is prevented, finally, the compactness and stability of the carbon layer are further enhanced through the auxiliaries, and the flame retardant property of the material is improved through the synergistic effect.

The invention relates to the technical field of glass processing, in particular to food-grade cutting fluid for glass processing and a preparation method of the food-grade cutting fluid. The lubricating oil is prepared from the following raw materials in percentage by weight: 50-60% of food-grade base oil, 10-15% of a food-grade lubricant, 3-8% of a food-grade auxiliary stabilizing material and the balance of water, the food-grade auxiliary stabilizing material is composed of a 1, 3-dihydroxy acetone dimer, an emulsion stabilizer, an adsorption stabilizer and an enhancement and protection stabilizer; the emulsion stabilizer is emulsified calcium stearate dispersion liquid and / or sodium polyphosphate; the adsorption stabilizer is a composition of multiple of magnesium trisilicate, food-grade diatomite and food-grade activated clay; the reinforcing and protecting stabilizer is calcium alginate and / or food-grade titanium dioxide, food-grade raw materials are adopted, and the glass cutting agent has a good cutting effect and good quality stability when being used for glass processing.

This invention relates to the field of adsorption materials technology, specifically to a high-performance seaweed carbon fiber material based on microsphere phase change and its preparation method. The method involves separating the components of seaweed raw materials to construct a "core-shell" structured microsphere phase change unit with calcium alginate microspheres as the shell and seaweed active polysaccharides as the phase change medium. A composite spinning solution is prepared by blending sulfonic acid-based cellulose nanocrystals with polyacrylonitrile, dispersing the microsphere phase change unit within it. After electrospinning, catalytic carbonization, and steam activation, the seaweed carbon fiber material is finally obtained. The sulfonic acid groups effectively catalyze the cyclization reaction of polyacrylonitrile during carbonization, significantly enhancing the density of the carbon skeleton and producing a multi-level synergistic enhancement effect with the microsphere phase change unit. This results in a material that simultaneously possesses ultra-high strength and high adsorption capacity, solving the technical challenge of simultaneously achieving both mechanical and adsorption properties in biomass carbon fibers.