340 results about "Cellulose methyl" patented technology

The invention discloses a lignin-inorganic oxide composite binder, preparation thereof and application of the lignin-inorganic oxide composite binder in a hard carbon negative electrode. The preparation method comprises the following steps: firstly, carrying out quaternization modification on lignosulfonate to obtain quaternized lignosulfonate, and then utilizing the action of quaternary ammonium and sulfonate of the quaternized lignosulfonate, hydroxyl and inorganic oxyacid radicals of inorganic nano oxide and carboxyl and hydroxyl of sodium carboxymethyl cellulose to prepare the modified lignosulfonate. The lignin-inorganic oxide composite binder with the interpenetrating network structure is formed. According to the binder, sodium carboxymethyl cellulose serves as a hard phase to enhance the mechanical rigidity, quaternized lignosulfonate rich in flexible long chains serves as a soft phase to bear part of loads, and inorganic nano oxide rich in hydroxyl serves as a crosslinking point or physical filler to enhance the structural stability of the binder. Besides, a multi-network structure formed by hydrogen bond crosslinking not only endows the binder with an excellent ion transmission rate, but also helps to enhance the interfacial compatibility of the binder with an ester electrolyte, thereby significantly improving the rate capability and cycle performance of the hard carbon negative electrode.

The invention discloses a preparation method of salt-resistant sodium carboxymethyl cellulose, and relates to the technical field of petroleum fracturing materials. The preparation method comprises the following steps: reacting stearic acid with ethylenediamine to obtain a monosubstituted intermediate, reacting the monosubstituted intermediate with cocoyl chloride to obtain an intermediate 1, reacting the intermediate 1 with epoxypropane to obtain an intermediate 2, and reacting the intermediate 2 with paratoluensulfonyl chloride to obtain a hydrophobic intermediate; reacting a sodium carboxymethyl cellulose solution with the hydrophobic intermediate to obtain modified sodium carboxymethyl cellulose, and sulfonating the modified sodium carboxymethyl cellulose with sulfamic acid to obtain crude salt-tolerant sodium carboxymethyl cellulose; and reacting the crude product salt-resistant sodium carboxymethyl cellulose with borax to obtain the salt-resistant sodium carboxymethyl cellulose. The salt-resistant sodium carboxymethyl cellulose prepared by adopting a step-by-step synthesis strategy has excellent salt resistance, temperature resistance, shearing resistance and dissolution rate, and is suitable for thickening and sand carrying of high-temperature and high-salt oil and gas field fracturing fluid.

The invention relates to the technical field of biomedical materials, and provides a preparation method and application of cross-linked carboxymethyl cellulose. The preparation method comprises the following steps: S1, dissolving anhydrous calcium chloride in absolute ethyl alcohol, sterilizing and filtering to obtain a sterile calcium chloride solution; s2, adding the dehydrated and purified sodium carboxymethyl cellulose into a sterile calcium chloride solution, and stirring for reaction; s3, after the reaction is finished, suction filtration is performed, filter residues are collected and washed, residual calcium chloride is removed, then vacuum drying is performed, and cross-linked carboxymethyl cellulose is obtained. The cross-linked carboxymethyl cellulose and sodium carboxymethyl cellulose have high consistency in chemical activity, physiological and biochemical activity, biocompatibility and safety risk, but in physical performance, the cross-linked carboxymethyl cellulose is hydrogel fiber, is insoluble in water, can more remarkably maintain the volume of a filling part, and is longer in duration time, so that the cross-linked carboxymethyl cellulose is more stable in filling. And the effects of instant filling and long-acting filling of the microsphere-containing surface filling agent are realized.

The invention discloses a graphene oxide-chitosan-carboxymethyl cellulose composite aerogel and an application of the graphene oxide-chitosan-carboxymethyl cellulose composite aerogel in adsorption of amaranth. The preparation method comprises the following steps: mixing a carboxymethyl cellulose aqueous solution with a chitosan acetic acid solution, adding gallic acid, stirring until the gallic acid is completely dissolved, adding the graphene oxide dispersion liquid, and stirring until a system forms uniform and stable gel; the gel is firstly subjected to ultralow-temperature freezing and then subjected to freeze drying, and finally the graphene oxide-chitosan-carboxymethyl cellulose composite aerogel is obtained. The aerogel prepared by the method is environment-friendly and stable in pore structure, and is a composite aerogel material with high adsorption capacity and good regeneration performance on anionic dyes. The adsorption capacity of the aerogel to amaranth can reach 125 mg / g, the adsorption rate is still kept at 77% after the aerogel is recycled for 3 times, and the aerogel is suitable for efficient treatment of dye wastewater.

The invention provides a temperature-sensitive hydrogel additive, a preparation method thereof and a hydrogel fire extinguishing agent. The temperature-sensitive hydrogel fire extinguishing additive comprises the following raw materials: a temperature-sensitive substance, a thickening agent, a cross-linking monomer, an initiator and a cross-linking agent in a mass ratio of (0.3-1.7): (0.2-0.9): (2-10): (0.1-0.3): (0.01-0.05), the temperature-sensitive substance is methyl cellulose and / or carboxymethyl cellulose, the thickening agent is carboxymethyl chitosan and / or chitosan, and the cross-linking monomer is acrylic acid. The temperature-sensitive type hydrogel fire extinguishing agent additive for the lithium battery fire disasters solves the problems that an existing fire extinguishing agent is weak in cooling capacity, low in fire extinguishing efficiency, poor in adhesiveness, high in reburning rate, not environmentally friendly in material and the like when coping with the lithium battery fire disasters, and can rapidly release water to absorb heat and cool under the high-temperature condition; meanwhile, a compact closed film layer is formed on the surface of the battery to isolate oxygen from being in contact with electrolyte, so that reburning is effectively prevented.

The invention provides light non-sintered ceramsite and a preparation method thereof, the non-sintered ceramsite is of a core-shell structure, an inner core is expanded perlite, a shell takes granite stone powder and desulfurized gypsum as main raw materials, and an interface modifier is added into the non-sintered ceramsite; the interface modifier comprises the following components in percentage by mass: 3%-8% of a silane coupling agent, 10%-18% of a nano silicon dioxide dispersion liquid, 25%-35% of a polyvinyl alcohol aqueous solution, 1.5%-3% of sodium carboxymethyl cellulose and the balance of deionized water. An interface modifier is added into the unfired ceramsite which takes expanded perlite as an inner core and takes a solid waste mixture such as granite powder and desulfurized gypsum as a shell, and the interface modifier can improve the physical and chemical characteristics of the surface of the expanded perlite and also can promote hydration reaction and interface bonding of shell slurry through a multi-component synergistic effect; the mechanical property and the stability of the unfired ceramsite are obviously improved.

The invention discloses a preparation method of an environment-friendly lithium battery fire extinguishing agent based on nanofiber gel, and relates to the technical field of fire extinguishing. When the environment-friendly lithium battery fire extinguishing agent is prepared, nano sodium carboxymethyl cellulose reacts with N-isopropylacrylamide and N, N-methylene bisacrylamide to prepare semi-interpenetrating network hydrogel; the semi-interpenetrating network hydrogel and calcium lactate are cross-linked, and nano sodium carboxymethyl cellulose hydrogel is prepared; and mixing and stirring the nano sodium carboxymethyl cellulose hydrogel, the modified silicon carbide and a flame retardant to prepare the environment-friendly lithium battery fire extinguishing agent. The prepared environment-friendly lithium battery fire extinguishing agent has good fire extinguishing performance.

The invention belongs to the technical field of chemical production, and particularly relates to a sodium carboxymethyl cellulose processing and feeding device which comprises a rack, a conveying belt is arranged on the rack, and a flow dividing assembly is further arranged on the rack; the shunting assembly comprises a second frame body fixedly connected to one side of the upper end of the rack, the upper side of the second frame body is transversely distributed at equal intervals and sleeved with a plurality of connecting rods, the connecting rod on the leftmost side is fixedly connected with the second frame body, the other connecting rods are slidably connected with the second frame body, and a first check block is rotationally arranged on one side of the lower end of each connecting rod; the first check block is connected with a second check block in an inserted and sliding mode. According to the material receiving device, a plurality of feeding channels matched with the material receiving openings in position and specification can be formed on the conveying belt according to the number of the receiving devices and the width of the material receiving openings through the flow dividing assembly, production materials can accurately fall into all the material receiving devices along the feeding channels, and the material receiving effect is guaranteed.

The invention provides a polyurethane polishing pad and a preparation method thereof, the polyurethane polishing pad comprises a polyurethane mixture, the polyurethane mixture comprises a polyurethane prepolymer, a curing agent and a heat dissipation filler; in the polyurethane mixture, the mass percent of the polyurethane prepolymer is 50%-90%, the mass percent of the curing agent is 10%-30%, and the mass percent of the modified filler is 1%-10%; the water-soluble polymer compound system comprises polyvinylpyrrolidone, carboxymethyl cellulose and polyethylene glycol, the water-soluble polymer compound system is characterized in that the polyvinylpyrrolidone and the carboxymethyl cellulose are grafted to form a grafted copolymer, the grafted copolymer is compounded with the polyethylene glycol, and the mass ratio of the polyvinylpyrrolidone to the carboxymethyl cellulose in the grafted copolymer is 10: (1-2). The heat dissipation filler is added into the polyurethane, so that an effective heat dissipation effect can be achieved, the polishing uniformity is prevented from being affected by overheating of the polishing pad and the wafer, and the surface temperature of the polished wafer is moderate.

The present application belongs to the technical field of underground filling of metal mines, and particularly relates to an iron tailings powder-based cementitious material for mine full tailings cemented filling, a preparation method and application thereof. The geopolymer-based anti-cracking mortar is made of iron tailings ultrafine powder, ore powder, sulphoaluminate clinker, Portland cement clinker, desulfurization gypsum and methyl cellulose ether. The iron tailings powder-based cementitious material can completely replace ordinary Portland cement in full tailings filling and achieve better cementing effect than cement, thereby greatly reducing the consumption of cement and other cementitious materials, lowering the filling cost, reducing carbon emissions and increasing the utilization rate of tailings. The rheological properties, mechanical properties and durability of the full tailings cemented filling material made of the iron tailings powder-based cementitious material can meet the requirements of mine filling, and the material can achieve the effect of expansion and roof contact without adding external additives, thereby solving the shrinkage problem of cement-based filling materials.

The invention belongs to the field of cellulose ether. The embodiment of the invention provides sodium carboxymethyl cellulose, a preparation method thereof and a dust suppressant. The method comprises the following steps: mixing cellulose, solid alkali and a solid etherifying agent to obtain a first mixture; adjusting the humidity of the first mixture by using a humidity adjusting medium to obtain flowable wet powder; mechanically activating the wet powder to obtain a second mixture; carrying out heating treatment on the second mixture, so that the second mixture is subjected to an alkalization reaction and an etherification reaction; carrying out neutralization treatment on the substance obtained by the heating treatment to obtain a neutral mixture; and sequentially carrying out dissolution treatment and purification treatment on the neutral mixture to obtain the sodium carboxymethyl cellulose. According to the method disclosed by the embodiment of the invention, a large amount of organic solvents such as isopropanol are not needed, so that the generation of waste liquid is reduced, and the environment-friendly treatment cost and the production safety risk are remarkably reduced.

The invention relates to the technical field of cellulose ether, and provides a method for reducing gel water insoluble substances in carboxymethyl cellulose. The method comprises the following steps: mixing alkali metal hydroxide, an organic solvent-water mixed solvent, a cellulose raw material and an additive, and carrying out alkalization reaction to obtain alkalization reaction liquid; the additive comprises a polyhydric alcohol; and mixing the alkalization reaction solution with an etherifying agent for etherification reaction to obtain the carboxymethyl cellulose. According to the method, the additive is added in the process of preparing the carboxymethyl cellulose by the slurry method, and a stable interface is formed among the cellulose, the alkali and the etherifying agent by utilizing the additive, so that the reaction uniformity is improved, and the content of gel water insoluble substances in the carboxymethyl cellulose is effectively reduced. The result of the embodiment shows that the content of gel particles in the product can be reduced from 49 to 23 by 53% when the carboxymethyl cellulose is prepared by adopting the method disclosed by the invention.

The invention discloses a bio-organic fertilizer for enhancing disease resistance of plants, and relates to the field of bio-organic fertilizers. The organic fertilizer is prepared by compounding brown algae residues, corn straws, composted chicken manure, sodium lignin sulfonate, a compound microbial agent and alginic acid-carboxymethyl cellulose composite gel. The preparation process comprises the following steps: a raw material pretreatment stage: crushing and drying brown algae residues, mixing the crushed and dried brown algae residues with corn straws subjected to alkaline hydrolysis treatment and decomposed chicken manure, and adding sodium lignin sulfonate for pre-fermentation; the compound microbial agent is compounded after being cultured step by step through bacillus subtilis and streptomycete; alginic acid and carboxymethyl cellulose are subjected to ionic crosslinking and ultrasonic treatment to form a three-dimensional gel network; mixing the pretreated substrate, the complex microbial inoculant and the gel, performing three-stage fermentation of heating, high temperature and cooling, granulating, and forming the slow-release particles by adopting a starch-alginic acid coating.

The invention discloses a fluoride-free strong-acid-free reverse flotation method for extracting a high-purity quartz sand flotation product from granite pegmatite, and belongs to the technical field of mineral flotation. The method comprises the following steps: carrying out graded crushing and ore grinding on granite pegmatite to obtain slurry to be treated; carrying out wet magnetic separation on the to-be-treated slurry to obtain ore pulp after magnetic separation and magnetic-containing minerals; the pH value of the ore pulp is not adjusted, reverse flotation is carried out in the presence of a quartz mixed inhibitor, and a feldspar product and a quartz product are obtained; the quartz mixed inhibitor is a combination of a component A and a component B, wherein the component A is selected from at least one of sodium metasilicate, sodium tripolyphosphate, sodium hexametaphosphate, carboxymethyl cellulose and salinized water glass; the component B is selected from at least one of guar gum, Arabic gum, sodium humate and citric acid. The method is free of fluorine and strong acid, green and efficient, and is a method for preparing high-purity quartz sand from pegmatite with high industrial application feasibility.

The invention relates to the technical field of asphalt mixture processing, in particular to a high-asphalt-aggregate-ratio durable basalt fiber asphalt mixture with low-temperature crack resistance and a preparation method of the high-asphalt-aggregate-ratio durable basalt fiber asphalt mixture. The preparation method comprises the following steps: (1) soaking cleaned basalt fibers in a hydrochloric acid solution for pretreatment to obtain pretreated basalt fibers; (2) adding nano-hydroxyapatite, carboxymethyl cellulose and dodecanoic acid into an ethanol water solution for heating reaction, and collecting a product after purification; (3) adding the product into acetone, then adding the pretreated basalt fibers, and stirring to obtain modified basalt fibers; and (4) uniformly mixing the modified basalt fiber, the asphalt, the mineral powder and the aggregate in parts by weight, thereby obtaining the composite material. The preparation method is simple and easy for large-scale production, and the prepared mixture has excellent low-temperature crack resistance, water stability and high-temperature stability, which is of great significance for improving the quality of road engineering and prolonging the service life.

The invention discloses a preparation method and application of a composite phase change material functional current collector, and relates to the technical field of functional current collectors. The composite phase change material obtained by compounding polyethylene glycol, graphene oxide, hydroxypropyl methyl cellulose and polyethyleneimine is roller-coated on the surface of the current collector, and is applied to a battery material to realize thermal management at high and low temperatures; the preparation method comprises the following specific steps: mixing and heating graphene oxide and polyethyleneimine to obtain polyethyleneimine modified graphene oxide, heating and melting polyethylene glycol, adding hydroxypropyl methyl cellulose, stirring, adding the polyethyleneimine modified graphene oxide, and continuously stirring to obtain the composite phase change material.

The utility model relates to the technical field of reaction kettles, and particularly discloses a sodium carboxymethyl cellulose esterification synthesis reaction kettle which comprises a reaction kettle body, a heating mechanism is arranged on one side of the reaction kettle body, a stirring mechanism is connected in the reaction kettle body and comprises a stirring shaft, a centrifugal disc is fixedly connected to the upper portion of the stirring shaft, and the centrifugal disc is fixedly connected to the lower portion of the stirring shaft. The heating mechanism comprises a heating box, a water inlet pipe and a water outlet pipe are respectively communicated between the upper part and the lower part of one side of the heating box and the reaction kettle, and a spiral pipe is connected between the water inlet pipe and the water outlet pipe; the spiral pipe is embedded in the reaction kettle, and the cross section of the spiral pipe is flat; according to the reaction kettle, the stirring sufficiency and the heating uniformity of raw materials can be improved, the layering phenomenon of the raw materials during reaction or the local high temperature or low temperature condition in the reaction kettle is avoided, and the reaction effect is ensured.

The positive electrode for a lithium-sulfur battery according to the present invention contains a predetermined amount of polyacrylic acid, polyacrylamide, carboxymethyl cellulose, and styrene-butadiene rubber as a binder polymer. When used in a lithium-sulfur battery, the positive electrode for a lithium-sulfur battery can ensure high adhesive strength between the positive electrode active material layer and the positive electrode current collector, and sufficient output performance.

The present application provides a kind of waste oil transesterification reaction catalytic system, belong to biomass refining field.The preparation steps of catalyst include: in the solution containing Ni (NO3) 2 And Fe (NO3) 3 Carboxymethyl cellulose is added, then urea is added, reaction is carried out, and nano-porous NiFe2O4 is obtained, MgCl2 / ZnCl2 Solution and KOH / K2CO3 Solution are added to NiFe2O4 water dispersion, reaction is carried out, solid product is collected, calcination is carried out, and catalyst is obtained.Catalyst is added to waste oil to carry out catalytic reaction.The present application adopts carboxymethyl cellulose to regulate the crystal form, grain size and dispersity of catalyst carrier, and the obtained solid magnetic catalyst can improve the production efficiency of waste oil for preparing biodiesel.The catalyst has high active site, fast reaction rate, mild reaction condition, can reduce reaction energy consumption and production cost.The catalyst also has good magnetic property, is convenient for recovery.The catalyst has good stability, improves the controllability and stability of reaction.

The invention belongs to the technical field of drilling fluid, and provides drilling fluid for a sandstone heat storage geothermal well and a use method of the drilling fluid. The drilling fluid comprises base slurry, calcium chloride, polyacrylamide, carboxymethyl cellulose, hydrolyzed polyacrylonitrile ammonium salt, an anti-sloughing fluid loss agent and an extreme pressure lubricant. Wherein base slurry, calcium chloride and polyacrylamide are added during drilling, and calcium chloride and polyacrylamide are supplemented in the process of drilling to the position 200 m away from a heat reservoir roof; polyacrylamide, carboxymethyl cellulose, hydrolyzed polyacrylonitrile ammonium salt, an anti-sloughing fluid loss agent and an extreme pressure lubricant are supplemented in the process from the position 200 m away from the thermal reservoir roof to drilling completion. The drilling efficiency is effectively improved, the drilling fluid cost is reduced, and compared with the prior art, the drilling efficiency is improved by 20%, the waste slurry discharge amount is reduced by 30%, and the drilling fluid cost is reduced by 30%.

The invention discloses a modified raw soil material based on copper tailings and a preparation method thereof, and belongs to the technical field of building materials. The performance of a traditional raw soil material is optimized by using an alkali activator solution (prepared from a sodium hydroxide solution and a sodium silicate solution), copper tailings, sodium carboxymethyl cellulose, ceramic fragments and the like, and the reasonable adding amounts of the materials are as follows: 10% of copper tailings, 2% of sodium hydroxide, 4% of sodium silicate, 4% of sodium carboxymethyl cellulose, 4% of ceramic fragments and 0.6% of straw. The mechanical property, the water resistance and the like of the modified immature soil material are obviously improved, the copper tailings can be subjected to reduction, recycling and harmless utilization, the immature soil material has better regeneration value and environmental benefits, and the prepared immature soil material can be effectively applied to the fields of immature soil building reinforcement, cultural relic and ancient building restoration, civil engineering and the like.

The invention relates to the technical field of battery materials, and discloses a nickel oxide composite electrode material and a preparation method thereof, and the electrode material comprises the following raw material components by weight: 25-30% of nickel oxide; 10%-15% of graphene; 3%-5% of silver nanowires; 5%-8% of silver fiber; 4%-6% of a nitrogen-doped carbon nanotube; 5%-8% of polyvinylidene fluoride; 10%-15% of lithium iron phosphate; 3%-6% of polyaniline; 3%-5% of carbon black; 2%-4% of polypyrrole; 1%-3% of sodium carboxymethyl cellulose; 5% to 10% of N-methyl pyrrolidone; 2%-4% of hydroxypropyl methyl cellulose; part of the raw material components are pretreated, the pretreated raw material components are mixed with other raw material components to form a precursor of the electrode material, then the precursor forming the electrode material is combined with a conductive substrate, compression molding and heat treatment are carried out, and finally the composite electrode material is prepared. The problems that a traditional nickel oxide electrode is poor in conductivity, cycling stability and rate capability and high in material cost can be solved.

The invention relates to the technical field of biomedical materials, in particular to hydrogel as well as a preparation method and application thereof. The hydrogel is obtained by crosslinking a polymer framework material, a functional additive and a shielding agent, the polymer framework material comprises any one or more of gelatin, carboxymethyl chitosan, hyaluronic acid, chitosan, collagen, polyvinyl alcohol, sodium carboxymethyl cellulose and sodium alginate; the functional additive comprises any one or more of tannic acid, tea polyphenol, vitamin C and procyanidine; the shielding agent comprises any one or more of barium sulfate, bismuth simple substance and bismuth-containing compound. The hydrogel provided by the invention can effectively isolate radiotherapy rays, reduce oxidative stress reaction, provide a protective barrier for normal tissues in a radiotherapy process and reduce radiation damage, has excellent tissue repair promotion capability, is safe in components, fast in metabolism and adjustable in flowability and adhesion, and is more beneficial to adaptation in rectum or skin tissues.

The application relates to the field of traditional Chinese medicine oral liquid preparations, in particular to a chitosan microsphere and a preparation method thereof and application of the chitosan microsphere in preparation of Baoyuan oral liquid preparations. The chitosan microsphere comprises, in weight parts, 80-120 parts of chitosan, 2-5 parts of an emulsifier and 30-40 parts of an oil phase; the chitosan microsphere is obtained by dissolving in an acid solution and then reacting with the emulsifier and the oil phase. The application adds a clarifying agent, i.e. a mixture of chitosan microspheres with different particle sizes, carries out flocculation adsorption, and adds a stabilizer sodium carboxymethyl cellulose CMC-Na; through the synergistic effect of the two, the quality and safety of the oral liquid are remarkably improved. The colloids after adsorption of the clarifying agent can be more stably dissolved in the medicinal liquid under the synergistic effect of the stabilizer sodium carboxymethyl cellulose, the preparation precipitation problem is solved, and the prepared Baoyuan oral liquid has good stability and immunoregulatory activity.

The application provides an in-situ liquid gel-forming water-retaining agent and a preparation method and application thereof. The water-retaining agent is composed of A component and B component which are applied in steps. The A component contains an aqueous solution of a natural modified polymer, and the natural modified polymer is selected from one or two of carboxymethyl chitosan, carboxymethyl cellulose or a sodium salt thereof. The B component contains an aqueous solution of a cationic crosslinking agent, and the cationic crosslinking agent is selected from one or more cations of copper nitrate, iron nitrate, zinc nitrate, manganese nitrate, chitosan quaternary ammonium salt, calcium nitrate and magnesium nitrate. The water-retaining agent can realize the integrated functions of slow release of trace elements, water retention, soil improvement and precise nutrition supply. Furthermore, the water-retaining agent is applied to crop growth in combination with the "step-by-step drip irrigation and in-situ gel formation" technology, so that the agronomic characters of crops can be significantly improved.

The present application belongs to the technical field of architectural coatings, and discloses a real stone paint coating prepared from liquid colored sand and granulation liquid and a preparation method thereof. The real stone paint coating prepared from the liquid colored sand and granulation liquid comprises liquid colored sand and granulation liquid, wherein the raw materials of the liquid colored sand comprise titanium dioxide, kaolin, quartz sand, cellulose, modified acrylate emulsion, protective glue solution and water; the raw materials of the granulation liquid comprise modified acrylate emulsion, surfactant, sodium carboxymethyl cellulose, propylene glycol, protective glue solution and water; the raw materials of the modified acrylate emulsion comprise comonomer, fluorine modifier, initiator and emulsifier. The preparation method of the real stone paint coating prepared from the liquid colored sand and granulation liquid comprises the following steps: (1) preparing protective glue latex; (2) preparing liquid colored sand and mixing it with the protective glue latex to prepare the real stone paint coating prepared from the liquid colored sand and granulation liquid. The real stone paint prepared by the present application from liquid colored sand and granulation liquid is more environmentally friendly, has better color stability, strong water resistance and good decorative effect.

Disclosed herein is a hydrogel composition that includes a crosslinked collagen polymer, a carboxymethyl cellulose derivative, an aqueous sodium chloride solution, a humectant, and an antimicrobial agent. The crosslinked collagen polymer has collagen, a hydrophilic polyether, and a dicarbamate group linking the collagen to the hydrophilic polyether. The carboxymethyl cellulose derivative is selected from the group consisting of carboxymethyl cellulose, an alkali metal salt of carboxymethyl cellulose, an ammonium salt of carboxymethyl cellulose, and combinations thereof. The humectant is selected from the group consisting of glycerin, propylene glycol, and a combination thereof. The antimicrobial agent is a combination of glycine betaine and polyhexamethylene biguanide hydrochloride.

The invention discloses an efficient flame-retardant fire extinguishing agent for rapidly extinguishing a lithium battery fire and a preparation formula, and relates to the technical field of fire fighting. The fire extinguishing agent is composed of a liquid-phase component and a solid-phase component, wherein the liquid-phase component comprises ethylene glycol, triethanolamine, fluoroalkyl betaine, sodium dodecyl benzene sulfonate, a phosphate flame retardant, an orange peel extracting solution and purified water; the solid-phase component comprises dodecyl sulfate, ammonium phosphate, potassium perchlorate, sodium carboxymethyl cellulose, polyacrylamide, benzotriazole and the like. The method comprises the following steps: drying and activating solid-phase components after graded crushing, and stirring in a nitrogen atmosphere; carrying out segmented treatment on liquid-phase components, and carrying out ultrasonic emulsification on an orange peel extracting solution; and after solid-liquid mixing, carrying out vacuum defoaming, high-speed shearing dispersion and homogenization treatment. According to the lithium battery fire extinguishing agent, component particle sizes with different dissolution rates are matched through graded crushing, nanoscale dispersion is achieved through ultrasonic emulsification, the bubble residual rate is reduced through vacuum defoaming, and the problems that a traditional lithium battery fire extinguishing agent is low in insulativity, low in cooling efficiency and insufficient in flame retardant efficiency are solved.

The application discloses a kind of synthetic devices of carboxymethyl cellulose lithium prepared by slurry process, it is related to the technical field of processing device of carboxymethyl cellulose lithium.The outer side of the mixing tank main body is provided with linkage matching structure, the top of linkage matching structure is fixedly connected with a plurality of preliminary feeding structure, the side of the top of mixing tank main body is fixedly connected with feeding groove, preliminary feeding structure includes matching positioning plate, upper extension plate, driven module, driven execution module and material storage pushing module.The application is designed by linkage matching structure and preliminary feeding structure, so that the device is convenient to complete the preparation of raw materials for carboxymethyl cellulose lithium prepared by slurry process, and the material needed is fed according to the use requirement, and through the design of preliminary feeding structure, it is convenient to adjust the angle after pushing during use, which avoids blockage and improves the use convenience and input effect.

The invention relates to the field of slow-release fertilizers, in particular to preparation of a hydrogel slow-release fertilizer. The invention discloses a preparation method of a slow release fertilizer of polyaspartic acid, carboxymethyl cellulose hydrogel, stearic acid and urea. Comprising the following steps: (1) preparing polysuccinimide, (2) preparing a polyaspartic acid gel solution by using the polysuccinimide, and then preparing a polyaspartic acid / carboxymethyl cellulose hydrogel solution by using the polyaspartic acid gel solution; the method further comprises the following steps: (3) preparing stearic acid / urea particles; 4, the polyaspartic acid / carboxymethyl cellulose hydrogel solution and the stearic acid / urea granules are used for preparing and obtaining the polyaspartic acid-carboxymethyl cellulose hydrogel-stearic acid-urea slow-release fertilizer.By means of the method, the slow-release fertilizer with the dual functions of water retention and slow release can be prepared and obtained.