25 results about "Sodium trimetaphosphate" patented technology

The invention discloses a preparation method of phosphorus-doped and closed-pore synergistically regulated biomass hard carbon and application of the phosphorus-doped and closed-pore synergistically regulated biomass hard carbon in a negative electrode of a sodium-ion battery, and belongs to the technical field of electrode materials. The preparation method comprises the following steps: preparing a water-based starch suspension with a certain mass fraction by taking starch as a biomass precursor, carrying out a cross-linking reaction through sodium trimetaphosphate to form a phosphate ester bond bridged stable network structure, pre-oxidizing the cross-linked precursor, and then carbonizing in a high-temperature inert atmosphere to obtain the water-based starch composite material. And the hard carbon material with expanded interlayer spacing, phosphorus doping and high closed pore volume is prepared. The material shows high reversible capacity, high initial coulombic efficiency, excellent rate capability and cycling stability when being used as a sodium-ion battery negative electrode active material. According to the preparation method disclosed by the invention, through a simple cross-linking-carbonizing process, cooperative regulation and control of heteroatom doping and a closed-pore structure are realized, and a new strategy is provided for large-scale preparation of the high-performance biomass hard carbon negative electrode.

The invention belongs to the technical field of fine chemical engineering, and discloses hydroxypropyl crosslinked starch as well as a preparation method and application thereof. The preparation method of the hydroxypropyl crosslinked starch comprises the following steps: mixing starch and water to prepare starch milk; adding sodium phytate and urea; adding sodium sulfate and sodium hydroxide after cooling; adding epoxypropane for reaction; and adding sodium trimetaphosphate to react to prepare the hydroxypropyl crosslinked starch. The hydroxypropyl crosslinked starch prepared by the preparation method disclosed by the invention has excellent shear resistance, acid resistance and oxidation resistance.

The invention belongs to the field of novel food flavors, and particularly discloses a high-temperature-resistant natural milk flavor as well as a preparation method and application thereof, and the high-temperature-resistant natural milk flavor comprises the following components: 10-30 parts of butter enzymatic hydrolysate, 80-150 parts of reconstituted milk enzymatic hydrolysate, 20-30 parts of whey protein powder, 100-130 parts of maltodextrin, 100-120 parts of composite modified starch, 1-5 parts of a high-temperature protective agent and 300-500 parts of deionized water. The preparation method comprises the following steps: respectively preparing butter enzymatic hydrolysate and reconstituted milk enzymatic hydrolysate; mixing and emulsifying the whey protein powder and the composite modified starch with a wall material system consisting of the whey protein powder, the maltodextrin and the composite modified starch, homogenizing and sterilizing, and spray-drying to obtain the whey protein powder. The composite modified starch is prepared by performing octenyl succinic anhydride esterification and sodium trimetaphosphate cross-linking composite modification on cassava raw starch. Through the synergistic effect of composite enzymolysis, a specific wall material system and a high-temperature protective agent, the industrial problems that the fragrance of the natural milk-flavored essence is easy to lose and the flavor is unstable during high-temperature processing are successfully solved.

The invention relates to a preparation method of acetylated distarch phosphate with high transparency, and belongs to the technical field of starch deep processing. The method comprises the following steps: by taking waxy corn starch as a raw material, dispersing the waxy corn starch into starch milk, and carrying out ultrasonic pretreatment; then sequentially carrying out acetylation and cross-linking reaction under a step-by-step optimization condition: firstly, taking acetic anhydride as a reagent, carrying out reaction at the pH value of 8.0-9.0 and the temperature of 20-35 DEG C, neutralizing until the pH value is 6.0-7.0, then taking sodium trimetaphosphate as a cross-linking reagent, adding sodium chloride as an accelerant, and carrying out reaction at the pH value of 10.0-11.0 and the temperature of 35-50 DEG C; and finally, neutralizing, washing with a 70-90% ethanol water solution, and drying to obtain the product. The product disclosed by the invention is excellent in transparency and good in freeze-thaw stability, and can be efficiently applied to preparation of transparent gel foods, frozen desserts and neutral transparent beverages.

The application discloses starch-based colon double-targeting microgels, a preparation method and application thereof. The preparation method comprises the following steps: covalently connecting chondroitin sulfate to beta-cyclodextrin by EDC to prepare beta-cyclodextrin-chondroitin sulfate; encapsulating a hydrophobic bioactive substance in the hydrophobic cavity of the beta-cyclodextrin in the beta-cyclodextrin-chondroitin sulfate to prepare beta-cyclodextrin-chondroitin sulfate loaded with the bioactive substance; modifying dextrin by octenyl succinic anhydride to prepare modified dextrin; and making a first mixed reaction system comprising the beta-cyclodextrin-chondroitin sulfate loaded with the bioactive substance, the modified dextrin and sodium trimetaphosphate to have a crosslinking reaction to prepare starch-based colon double-targeting microgels. The starch-based colon double-targeting microgels have good encapsulation and protection effects on the bioactive substance, and have a targeting effect in the colon, so that the bioactive substance can be more effectively delivered.

The invention relates to the technical field of dust suppression materials, in particular to a multifunctional dust suppressant suitable for a coal mine and a preparation method and application of the multifunctional dust suppressant. Gastrodia elata polysaccharide and solani gum are used as base materials, the gastrodia elata polysaccharide is subjected to carboxymethylation modification so as to remarkably improve the wettability of the gastrodia elata polysaccharide, sodium trimetaphosphate is used as a cross-linking agent, and stable phosphodiester bonds are formed between carboxymethylated gastrodia elata polysaccharide and solani gum molecules under the alkaline condition; sodium dodecyl benzene sulfonate is compounded, so that the wetting and infiltration capacity of the whole system is further enhanced. Through targeted adjustment of raw material selection and raw material ratio cooperation, the prepared dust suppressant can simultaneously realize high wettability, strong cohesiveness and good water retention, and can rapidly wrap coal dust to form a compact consolidation layer with high mechanical strength, actually, the coal dust settling time is less than 20 seconds, the hardness of the consolidation layer exceeds 80 HA, and the dust suppressant has good dust suppressant performance. The dust suppression efficiency on PM10 reaches 98% or above, and good wind erosion resistance and rain erosion resistance are achieved.

This invention provides a hemostatic composition, its preparation method, and hemostatic products. The raw materials of the hemostatic composition include the following components in parts by weight: 0.01-0.5 parts cannabidiol, 10-150 parts tannic acid-modified carboxymethyl chitosan, and 5-250 parts cross-linked starch. The raw materials of the tannic acid-modified carboxymethyl chitosan include the following components in parts by weight: 45-55 parts carboxymethyl chitosan and 0.5-1.5 parts tannic acid. The raw materials of the cross-linked starch include the following components in parts by weight: 95-105 parts carboxymethyl enzymatically hydrolyzed starch and 2-5 parts sodium trimetaphosphate. This hemostatic composition has good hemostatic effect, and its use in hemostatic products can enable the hemostatic products to have good hemostatic effect.

The invention relates to an embolism microsphere with a photothermal effect and a preparation method and application thereof, and belongs to the technical field of embolism microspheres. The preparation method comprises the following steps: mixing starch and a cross-linking agent in water to obtain an aqueous phase solution; adding the water-phase solution into the oil-phase solution, and carrying out reversed-phase suspension polymerization reaction to obtain starch hydrogel microspheres; wherein the cross-linking agent comprises at least one of sodium trimetaphosphate or sodium tripolyphosphate; oxidizing the starch hydrogel microspheres with sodium periodate to obtain oxidized starch microspheres; the oxidized starch microspheres are subjected to surface modification by adopting dopamine, a polydopamine coating layer is formed on the surfaces of the oxidized starch microspheres, and the embolism microspheres with the photothermal effect are obtained. The embolism microspheres have degradability and drug loading performance at the same time, embolism-chemotherapy-photothermal triple therapy is cooperated, drug release can be controlled through the photothermal effect, and therefore the embolism microspheres can be effectively used for TAE or TACE treatment.

The invention relates to a porous starch microsphere as well as a preparation method and application thereof, and belongs to the technical field of embolism microspheres. The preparation method comprises the following steps: heating and gelatinizing starch in an alkaline aqueous solution, and adjusting the pH value to 7-8 to obtain a starch solution; mixing the starch solution, a cross-linking agent and a polyvinyl alcohol aqueous solution to obtain a water phase; wherein the cross-linking agent comprises sodium trimetaphosphate and / or sodium tripolyphosphate; mixing the water phase and the oil phase, and carrying out a cross-linking reaction to obtain gel microspheres; and placing the gel microspheres in water, and heating until the polyvinyl alcohol is dissolved to obtain the porous starch microspheres. Starch is used as a raw material, polyvinyl alcohol and sodium trimetaphosphate and / or a sodium tripolyphosphate cross-linking agent are not easy to react, and a porous structure with a controllable aperture is formed in situ, so that various types of drugs can be effectively embedded and loaded, and efficient loading and slow release of the drugs are realized in combination with the degradable characteristic of the starch.

A new technology has been developed to produce RS4 resistant starch by chemically modifying starch with sodium tripolyphosphate (STPP) and sodium trimetaphosphate (STMP) to crosslink the starch in a semi-dry state. Compared to the conventional wet slurry modification process using purified starch, the process of the invention is economical and more sustainable with less chemicals, less water, simple mixing with low energy and has high reaction efficiency. The invention is exemplified with the use of pea starch to make a new pulse starch product comprising 60-85% wt / wt starch and 5-10% wt / wt protein, wherein at least 50% of the starch is crosslinked starch and the pea product contains at least 60% dietary fibre by wt / wt, however, the invention is applicable to cereal grains, roots, tubers or other pulse starches.

The application discloses a preparation method of high-substitution-degree hydroxypropyl distarch phosphate, which comprises the following steps: preparing a starch milk solution; performing multi-gradient pretreatment on the starch suspension emulsion; collecting the pretreated starch sample; placing anhydrous Na2SO4 in water, stirring until completely dissolved, then adding the pretreated starch sample, and uniformly stirring; adjusting the pH value of a reaction system, adding propylene oxide, and reacting; adding sodium tripolyphosphate and sodium trimetaphosphate, and reacting; and stopping the reaction to obtain high-substitution-degree hydroxypropyl starch. The preparation technology of the high-substitution-degree hydroxypropyl distarch phosphate in the application does not use organic solvents and does not pollute the environment; the modification reaction process in the technology can be carried out in a closed manner at normal temperature, and the requirement on equipment is low; and the hydroxypropyl substitution degree of the hydroxypropyl distarch phosphate prepared by using the patent technology is between 0.5 and 1.0.

The present application relates to a kind of liquid-solid phase change autogenic hydroxyapatite microspheres solution and its preparation method and application.The liquid-solid phase change autogenic hydroxyapatite microspheres solution includes calcium source solution, composite phosphorus source solution and composite regulator solution;The calcium source solution includes calcium salt;The composite phosphorus source solution includes phosphorus salt;The phosphorus salt includes the combination of any two or at least three of sodium tripolyphosphate, sodium hexametaphosphate, sodium trimetaphosphate or sodium hexametaphosphate;The composite regulator solution includes urea and organic acid.The liquid-solid phase change autogenic hydroxyapatite microspheres solution of the present application can generate hydroxyapatite microspheres in situ under specific temperature conditions by hydrothermal reaction, and can be used as proppant in the fracture after oil and gas reservoir fracturing, has good flow conductivity, thereby improving recovery efficiency.

The application relates to the technical field of soil improvement, in particular to a soil loosening agent and a preparation method and application thereof. The raw materials of the soil loosening agent include, by mass fraction, 5-10 parts of corn starch, 1-3 parts of sodium trimetaphosphate, 1-2 parts of amylase, 5-15 parts of acrylamide, 0.1-1 part of ammonium persulfate, 1-5 parts of a crosslinking agent, 1-2 parts of an emulsifier, 5-15 parts of methyl methacrylate, 1-5 parts of dopamine, 1-3 parts of a compound microbial agent, 10-20 parts of bentonite and 1-5 parts of humic acid. The application has good soil loosening effect, can promote the formation of granular structure, has excellent water retention and ventilation effects, guarantees the good growth of plant roots, makes the soil more suitable for crop growth, improves the growth and development characteristics of crops, and increases the yield and income of crops.

The application discloses a cassava starch glue additive composition and a preparation method thereof in the technical field of material preparation, and comprises the following components in parts by weight: modified cassava starch 150 parts, modified zein fiber 30-50 parts, 10% sodium hydroxide solution 10-20 parts, sodium chloride 0.1-0.15 parts, borax 5-10 parts, water 250-300 parts, and sodium carboxymethyl cellulose 0.3-0.5 parts; the modified cassava starch is a product obtained after pre-gelatinized cassava starch is crosslinked with sodium trimetaphosphate; and the modified zein fiber is a zein fiber obtained after PEEK modification. The waterproof property, heat resistance and adhesion of the glue are improved by modifying the cassava starch and adding the modified zein fiber, so that the waterproof property, heat resistance and adhesion strength of the cassava starch glue additive composition are improved.

The invention relates to the technical field of biological materials, in particular to a premixed injectable deciduous tooth root canal filling material and a preparation method and application thereof.The premixed injectable deciduous tooth root canal filling material is prepared from solid raw material powder alpha calcium sulfate hemihydrate, iodoform, barium sulfate, calcium oxide, calcium salt, sodium tripolyphosphate, sodium trimetaphosphate, calcium tetraphosphate, sodium chloride, an antibacterial agent and biological polyphenol; mixing with non-aqueous liquid glycerol and polyethylene glycol-400 / 600, and performing ball milling in a zirconium oxide ball milling tank to obtain the biological ceramic paste. The pre-mixed injectable calcium sulfate-based self-curing biological ceramic has the advantages that the pre-mixed injectable calcium sulfate-based self-curing biological ceramic has good operation performance, has good sealing performance on root canals, meets the international standard of ISO standard (ISO 6876-2012) Dentistry-Root Canal sealing bacteria, and has the advantages of absorbability, antibacterial property, anti-inflammatory property and good biocompatibility. The invention further provides a preparation method of the pre-mixed injectable calcium sulfate-based self-curing biological ceramic, and the preparation method of the pre-mixed injectable calcium sulfate-based self-curing biological ceramic has the advantages that the pre-mixed injectable calcium sulfate-based self-curing biological ceramic can be used for preparing the biological ceramic;

The application discloses a high-temperature environment adaptive concrete hydration temperature rise inhibitor and a preparation method thereof. The concrete hydration temperature rise inhibitor is a solid powder prepared from a solid mixture of sodium trimetaphosphate ascorbic acid ester compounds and retarding components and molten paraffin wax; the sodium trimetaphosphate ascorbic acid ester compounds are ester compounds generated from sodium trimetaphosphate and ascorbic acid under alkaline conditions; and the paraffin wax has a melting point of 44-50 DEG C. The high-temperature environment adaptive concrete hydration temperature rise inhibitor is prepared by mixing sodium trimetaphosphate ascorbic acid ester compounds, retarding components and paraffin wax. The hydration temperature rise inhibitor has the hydration regulation performance, has little influence on the induction period, is suitable for being applied to high-temperature mold-entering concrete, and can ensure the 28d compressive strength of the concrete.

The invention discloses a high-water-solubility L-ascorbic acid-2-phosphate calcium sodium salt as well as a preparation method and application of the high-water-solubility L-ascorbic acid-2-phosphate calcium sodium salt. The 1% aqueous solution of the calcium sodium salt is free of precipitation after standing at 25 DEG C for 24 hours, and the 600 nm light transmittance of the 0.1% aqueous solution is greater than or equal to 95%. The preparation method comprises the following steps: reacting L-ascorbic acid with sodium trimetaphosphate to generate AMP sodium salt, slowly dropwise adding calcium lactate or calcium gluconate at low temperature, adding 0.1-0.5 wt% of sodium citrate as an anti-precipitation protective agent, and carrying out low-temperature spray drying (inlet air is 150-170 DEG C and outlet air is 65-75 DEG C) and cold nitrogen cooling to obtain the product. The product is specially applied to water sprinkling for aquaculture, can be completely dissolved within 30 seconds under the concentration of 10g / L, is clear and transparent in solution, effectively solves the problems of slow dissolution, turbidity and precipitation of the traditional AMP calcium sodium salt during water sprinkling, and remarkably improves the biological utilization efficiency.

The application relates to the field of food / medicine auxiliary materials, and more particularly to a compound functional starch composition and a preparation method thereof. The compound functional starch composition is prepared from the following raw materials in mass parts: 65-100 parts of a compound starch matrix, 1-5 parts of a thickening agent, 3-6 parts of a water retention agent, 1-3 parts of a compatibility agent, 0.1-0.3 parts of an antioxidant, 3-5 parts of microcrystalline cellulose, 1-3 parts of citric acid, 0.5-1.5 parts of sodium trimetaphosphate, 3-6.5 parts of a functional anhydride and 180-250 parts of deionized water. The finally obtained compound functional starch composition not only has excellent functionality, but also has good storage stability, compatibility stability and freeze-thaw stability; the compound functional starch composition can improve the loading efficiency and has good processing application performance, thereby greatly improving the functionality and functional stability of the compound functional starch composition, expanding the applicable range of the compound functional starch composition in the field of food / medicine auxiliary materials and having very excellent application prospect.

The invention discloses a chitosan modified covalent organic framework material as well as a preparation method and application thereof, and belongs to the technical field of functional materials. According to the material, benzenetricarboxaldehyde, tri (4-aminophenyl) amine and chitosan serve as raw materials, a covalent organic framework precursor is synthesized in a mixed solvent through a one-pot in-situ Schiff base condensation reaction, sodium trimetaphosphate serves as a cross-linking agent to conduct stabilizing treatment on the chitosan, and finally the composite material COF (at) CS high in crystallinity and good in stability is obtained. The preparation method does not need a post-modification step and is simple in process. The obtained material shows extremely high adsorption capacity and selectivity for gold ions (Au (III)) in an aqueous solution, the removal rate for the gold ions under the condition of multiple coexisting metal ions still reaches 96% or above, and the material has wide application prospects in the field of recovery of precious metal from electronic waste leachate and other secondary resources.

The invention belongs to the technical field of mineral processing engineering, and particularly relates to modified starch for selectively inhibiting iron ore as well as a preparation method and application of the modified starch. The modified starch is prepared by the following steps: by taking soluble starch as a raw material, carrying out ice-water bath ultrasonic pretreatment, reacting with sodium trimetaphosphate within a specific pH range, introducing a sorbitol-xylitol-glycerol ternary compound molecular regulator in the process to control a reaction path, and finally, carrying out precipitation, dialysis and freeze-drying to obtain the product. According to the method, the substitution degree of the product phosphate is accurately controlled to be 0.01-0.04, and the proportion of monoester bonds is not lower than 80%. The modified starch is applied as an inhibitor in reverse flotation separation of iron ore and silicate minerals, a selective adsorption layer is preferentially formed on the surface of the iron ore, efficient inhibition of the iron ore is achieved, meanwhile, excessive inhibition of silicate is avoided, a stable and adjustable separation window is formed in hard water and complex water chemical environments, and the separation efficiency is improved. The method is suitable for efficient separation of iron ore and silicate.

The optimization process comprises the following steps: S1, taking out polished round-grained rice, crushing the polished round-grained rice by using a crusher, removing the crushed rice, sieving the crushed rice for three times by using a 100-mesh sieve, mixing rice starch and 0.3% sodium hydroxide (1: 5) in a ratio, standing overnight, then removing supernate, taking a lower-layer white precipitate, centrifuging, regulating the lower-layer white precipitate to be neutral by using 0.1 mol / L hydrochloric acid, and drying the lower-layer white precipitate by using a drying oven at 40 DEG C; s2, taking rice starch, adding a proper amount of sodium hydroxide, and performing ultrasonic treatment in a water bath of 60 DEG C and 100 W for 45 minutes to obtain 20 mL of 10% starch milk; s3, oil phase: taking a proper volume of vegetable oil, heating in a water bath at 60 DEG C, adding a proper amount of emulsifier, stirring for 10 minutes, and cooling to room temperature; the water phase is poured into the oil phase, sodium trimetaphosphate is added in the stirring process, the mixture is stirred for 3 h and then centrifuged, the mixture is washed three times with ethyl acetate, absolute ethyl alcohol and acetone in sequence, and the mixture is dried by a centrifugal blower at 40 DEG C for 20 h. The preparation method has the beneficial effects that the water absorbability of the sticky rice starch particles is better than that of the polished round-grained rice starch particles, and the excellent adsorption performance plays a huge role in the medical field.

The application discloses a synthesis method of sodium trimetaphosphate, which adopts one-step solid-state mixing reaction with ammonium dihydrogen phosphate and sodium sulfate as raw materials, and has the advantages of shortened production process, reduced production cost, more neutral by-products in the reaction process, small corrosion to the equipment, easy collection, cheap raw materials, high economic advantages and the like, compared with traditional processes.

The invention belongs to the technical field of biological fermentation, and provides beer yeast vitamin B enriched fermentation liquor and a preparation method thereof. The preparation method comprises the following steps: extracting beer yeast cell wall polysaccharide by adopting an alkaline method, carrying out high-pressure homogeneous nano-fibrosis treatment, endowing negative charges through phosphorylation modification of sodium trimetaphosphate, and constructing a shell layer on the surface of a positive electricity coating beer yeast body formed by epsilon-polylysine through electrostatic deposition; core-shell ion cross-linked immobilized particles are formed by calcium ion cross-linking and used for fermentation, efficient enrichment with the vitamin B1 content being 1-50 mg / L and the vitamin B2 content being 0.5-30 mg / L is achieved, the particle shell thickness is 3-20 microns, the anti-shearing stability is guaranteed, efficient cross-shell mass transfer of substrate oxygen and products is considered, and the yield of the product is increased. The technical problems that structural stability and mass transfer efficiency of traditional immobilized fermentation are difficult to consider at the same time, rheological control of a high-solid-content system is limited, and long-term stability of a shell layer in a dynamic fermentation environment is insufficient are solved, and the method has wide application value.

The present application relates to the technical field of feed additive, in particular to a feed additive for enhancing immunity of ruminants and a preparation method thereof.The present application first reacts L-ascorbic acid with sodium trimetaphosphate to prepare an ascorbic acid phosphate intermediate, then esterifies and calcium-magnesium salts the ascorbic acid phosphate intermediate with lauric acid esterification and calcium-magnesium saltification under the catalysis of immobilized lipase to obtain a phosphorylated-lauric acylated calcium-magnesium ascorbate; subsequently, short-chain chitosan dispersion, first sodium phytate segment locking solution, long-chain chitosan dispersion and second sodium phytate segment locking solution are sequentially added to form modified ascorbic acid immune enhancement microparticles, which are then mixed with pregelatinized corn starch and malt dextrin and spray dried; the present application is conducive to improving the granulation stability, rumen retention and later-stage release and utilization of ascorbic acid active substances, and is suitable for ruminant immune stress period diet addition.

The invention relates to a fully biodegradable composite material as well as a preparation method and application thereof, and belongs to the technical field of biodegradable materials. The fully biodegradable composite material is prepared from the following components in percentage by mass: 32 to 36 percent of bamboo nano powder, 48 to 52 percent of carboxymethyl starch, 3 to 5 percent of cellulose nanocrystals, 5 to 7 percent of sodium citrate, 1 to 3 percent of sodium hydroxide and 1 to 4 percent of sodium trimetaphosphate. The fully biodegradable composite material is composed of natural and renewable biomass raw materials, does not contain any fossil-based polymer, and forms a three-dimensional network structure through a green physical / chemical crosslinking technology, and the final product can be rapidly and completely degraded in a natural environment or a composting condition without environmental residues; and the prepared composite material has good mechanical properties, water resistance and biodegradability, can be widely applied to the environmental protection fields of agricultural mulching films, food packaging and the like, and fundamentally solves the problem of white pollution.