97 results about "Sodium lignosulfonate" patented technology

This invention discloses a denitrification agent for low-temperature denitrification and its preparation method, belonging to the field of denitrification technology. The denitrification agent is prepared using diatomaceous earth as the matrix framework, compounded with calcium chloride, calcium bicarbonate, chitosan, sodium lignosulfonate, and TRIS (tris(hydroxymethyl)aminomethane). The components synergistically optimize the pore structure. Chitosan and sodium lignosulfonate achieve self-assembly through hydrogen bonding and electrostatic attraction. Nitrogen oxides are removed through a dual action of alkaline absorption and electrostatic adsorption. The TRIS can be regenerated and reused after alkali washing. This invention's denitrification agent solves the problems of high reaction temperature, poor low-temperature activity, low efficiency in removing low-concentration nitrogen oxides, and easy ammonia escape in traditional SCR denitrification technology, and can meet the requirements for NO removal in flue gas from power plants. x ≤15mg / m 3 It has ultra-low emission indicators, and features excellent low-temperature activity, high denitrification efficiency, and recyclability. It is suitable for denitrification treatment of low-temperature flue gas in power plants, etc.

This invention provides a soil stabilizer and its construction method, belonging to the field of road construction. The soil stabilizer comprises a water-reducing and densifying powder, a hydration-resistant stabilizing liquid agent, and a cementing material. By mass fraction, the water-reducing and densifying powder comprises 20-30% zeolite powder, 5-8% aluminum sulfate, 3-7% lithium carbonate, 2-4% silica fume, and the balance metakaolin. By mass fraction, the hydration-resistant stabilizing liquid agent comprises 5-8% polyamide resin, 3-5% alkyltrimethylammonium chloride, 2-4% organosilane coupling agent, 1-2% sodium lignosulfonate, and the balance liquid polyethylene glycol. The stabilizer of this invention consists of three main functional modules: the water-reducing and densifying powder, the hydration-resistant stabilizing liquid agent, and the cementing material. These components work synergistically to achieve efficient stabilization of silty soil.

The application discloses a preparation method of a pesticide lignosulfonate sodium dispersant composition and belongs to the technical field of dispersants. The method comprises the following steps: S1, taking papermaking black liquor as raw material, performing standing precipitation, flocculation precipitation, membrane concentration and acid precipitation treatment to obtain purified lignin; S2, adding the purified lignin into water, adjusting the pH of the system to 10-11, then adding hydrogen peroxide to perform pre-oxidation, then adding formaldehyde and sodium sulfite to perform sulfomethylation reaction, and adding formaldehyde to perform polycondensation reaction; cooling and discharging, and performing spray drying to obtain lignosulfonate sodium; and S3, adding the lignosulfonate sodium and 1-ethyl-3-methyl imidazolium L-lactate into water and stirring and uniformly mixing, adding stevioside to perform ultrasonic treatment, forming a homogeneous system, and performing spray drying to obtain the pesticide lignosulfonate sodium dispersant composition. The lignosulfonate sodium dispersant composition can effectively improve the pesticide dispersion stability and pesticide biological activity, and meets the pesticide use requirement.

This invention discloses a pesticide composition for controlling guava nematodes and its preparation method, belonging to the field of pesticide technology. By weight, the raw materials of the pesticide composition include the following components: 8-12 parts of neem seed extract, 8-12 parts of pyrethrum extract, 5-8 parts of tongkat ali extract, 5-8 parts of croton fruit peel extract, 5-8 parts of guava leaf extract, 20-25 parts of compound microbial agent, 3-5 parts of sodium lignosulfonate, 5-8 parts of xanthan gum, 4-6 parts of trehalose, and 80-100 parts of water. The above components work synergistically to achieve excellent control of guava nematodes.

The present application relates to the technical field of rubber processing aids, and particularly relates to a dispersant for rubber, a preparation method and application thereof.The dispersant for rubber comprises the following raw materials in parts by weight: 20-30 parts of stearic acid, 5-10 parts of microcrystalline wax, 1-5 parts of monoglyceride fatty acid ester, 2-7 parts of dispersing aid, and 1-5 parts of modified sodium lignosulfonate.The dispersant for rubber can improve the wetting and coating capacity of fillers, reduce the Mooney viscosity of rubber compounds, and improve the flowability of mixing and processing.In addition, the dispersant for rubber can improve the dispersion uniformity of fillers in the rubber system, and improve the interfacial bonding strength between fillers and rubber.Meanwhile, the dispersant for rubber can effectively avoid the migration and blooming of small molecule additives, and improve the appearance stability of rubber products.

This invention belongs to the field of biological agents for aquaculture, and discloses a compound biological pond-cleaning agent containing tea saponin and its preparation method. The compound biological pond-cleaning agent of this invention comprises the following components by weight: 3-10 parts tea saponin, 60-70 parts roe beetle root powder, 10-20 parts Buddleja officinalis, 5-10 parts compound microbial powder, 3-8 parts adjuvants, and 10-20 parts carrier; the adjuvant is a mixture of sodium lignin sulfonate and sodium dodecylbenzene sulfonate; the compound microbial powder is a mixture of Bacillus subtilis and photosynthetic bacteria; and the carrier is diatomaceous earth. This invention combines three natural active ingredients—tea saponin, roe beetle root powder, and Buddleja officinalis—with suitable adjuvants and a carrier, which can expand the pond-cleaning range and has good killing or inhibitory effects on harmful organisms such as wild fish, shrimp, crabs, and snails, as well as various pathogens. The pond-cleaning is thorough, and the raw materials are easily degradable, leaving no residue. It is environmentally friendly and has a long-lasting effect, which is of great significance for promoting the green and sustainable development of aquaculture.

This invention discloses a method for preparing high-whiteness kaolin using coal gangue with high yield, belonging to the field of high-value utilization technology of solid waste. The method involves crushing coal gangue, mixing and grinding it with oligosaccharides and water to obtain a slurry. The slurry is then filtered and dried to obtain powder. The powder is calcined and then vibrated to obtain more powder. Water is added to the powder to form a slurry, and sodium hydroxide, sodium hexametaphosphate, and sodium lignosulfonate are added sequentially under strong stirring to obtain another slurry. The slurry is then subjected to magnetic separation to remove iron and calcined in air to obtain kaolin. This method achieves high-yield purification of kaolin, with a yield exceeding 90%, and reduces the Fe content in the kaolin to below 0.25%, achieving a calcined whiteness of over 96%. The process is also simple and suitable for industrial production.

The application relates to a grinding aid and a preparation method and application thereof, the grinding aid comprising a to-be-treated solution and a surfactant; the to-be-treated solution contains sodium acrylate, sodium hydroxide and sodium p-toluenesulfonate; and the surfactant comprises at least one of sodium dodecyl benzene sulfonate, sodium lignosulfonate, allyl polyether, fatty alcohol polyoxyethylene ether, alkyl phenol polyoxyethylene ether and nonyl phenol polyoxyethylene ether. The specific surfactant in the grinding aid cooperates with the to-be-treated solution, synergistically improves the interface wetting performance of the material, weakens the powder aggregation phenomenon, reduces the surface energy, and further improves the dispersibility of the material and the gradation and fluidity of the material.

This application provides a composite porous fiber aerogel, its preparation method, and its application, belonging to the field of functional materials. The method involves dissolving polyvinyl alcohol (PVA) and sodium lignosulfonate (LS) in water to obtain PVA and LS solutions, respectively. The PVA and LS solutions are then mixed uniformly in a specific ratio to obtain a spinning solution. This spinning solution is atomized into droplets and sprayed into a uniformly stirred coagulation bath. Under the stirring and stretching action of the coagulation bath, the droplets form fibers, simultaneously undergoing solvent-non-solvent exchange and phase separation to form nascent composite porous fibers. These nascent composite porous fibers are then placed in a coagulation bath containing a crosslinking agent for crosslinking treatment and phase separation to obtain crosslinked composite porous fibers. After dispersion, freezing, and freeze-drying, the composite porous fiber aerogel is obtained. This application utilizes the covalent composite of PVA and sodium lignosulfonate and the hierarchical pore structure to enable the composite porous fiber aerogel to exhibit high adsorption capacity for positively charged proteins and excellent regeneration performance.

The application discloses a synthesis process of special sodium lignosulfonate with high dispersing force, and belongs to the technical field of sodium lignosulfonate, and solves the problems of the sulfonation degree difference caused by the micro-heterogeneity of raw materials, the cross-linking formation of micro-gel and the elimination of abnormal signals, and the conformational heterogeneity in grinding, dyeing and heat storage, which respectively causes the efficiency reduction, filter cake blockage and thixotropic gelation of color spots. In the application, formaldehyde and hydrogen peroxide are synchronously activated to generate reaction sites under homogeneous alkaline conditions, and stepwise feeding sulfonation is carried out under high temperature and high pressure, so that the hydrophilic groups are uniformly distributed, the formaldehyde is cancelled and glyoxal and epichlorohydrin are used instead, the hydrophilic chain extension is cut off to cut off the micro-gel generation path, the skeleton is activated under the condition of no monomer, the mixed monomer is dropped to synchronously grow the side chain, a thick and uniform hydrophilic protective layer is formed, the internal polarity gap of the molecule is reduced, the grinding efficiency is improved, the particle residue is reduced, the dyeing filter cake blockage and fabric color spots are avoided, and the thixotropic gelation during long-term heat storage is avoided.

This invention discloses an environmentally friendly shale brick based on multi-source waste and its preparation method. Using shale as the matrix, it is compounded with fine powder from construction waste, sludge incineration ash, waste ceramic powder, and rice husk charcoal. Simultaneously, calcined kaolin, red mud, silane coupling agent, calcium stearate, sodium carboxymethyl cellulose, polyvinyl alcohol, and sodium lignosulfonate are introduced to form a composite system of "inorganic solid waste + mineral reinforcement + organic modification + low-temperature segmented sintering." The organic components play a role in plasticizing, binding, water retention, and crack reduction during the green body stage. They completely pyrolyze at high temperatures without residue and do not affect mineral phase formation. In synergy with the inorganic system, the green body achieves crack-free construction, extremely low shrinkage, and significantly improved strength.

The present disclosure relates to the technical field of concrete additive, and particularly relates to a concrete retarding water reducing agent and a preparation method and application thereof; the concrete retarding water reducing agent comprises a compound A, a component B, a component C and a solvent D; wherein the structural formula of the compound A comprises a polyphosphate chain segment and a polyether chain segment; the polyphosphate chain segment and the polyether chain segment are connected through a residue of a cyclic acid anhydride; the component B comprises the following: sodium lignosulfonate, sodium dodecyl sulfate, sodium gluconate and at least one organic acid; the component C comprises at least two of the following: borax, calcium silicate, fiber, magnesium sulfate and calcium chloride; and the solvent D is a mixture of water and an organic solvent. The present disclosure provides a novel concrete-based additive which can simultaneously play a good retarding and water reducing role.

This invention discloses a method for preparing avermectin nanoparticles supported on zein-sodium lignin sulfonate, and its applications. The preparation method involves dissolving avermectin and zein in an organic solvent to form a solution (stream 1), and dissolving sodium lignin sulfonate or modified sodium lignin sulfonate in deionized water to form a solution (stream 2). Both streams are simultaneously injected into a dual-channel confined counter-current mixer for rapid mixing. The resulting nanoparticle suspension is then collected, completing the preparation process. This invention utilizes the compatibility of hydrophobic zein with avermectin, combined with the self-assembly properties of zein and the use of sodium lignin sulfonate or modified sodium lignin sulfonate as a stabilizer, to prepare avermectin nanoparticles with high drug encapsulation efficiency and excellent drug release performance. Furthermore, these nanoparticles exhibit excellent resistance to UV photodegradation, effectively reducing the photodegradation of avermectin. The method is simple, rapid, and easy to control.

This invention provides a biomass-based hydrogel loaded with eutectic urea, its preparation method, and its application, belonging to the field of agricultural fertilizer technology. This invention uses sodium alginate-calcium gel to encapsulate urea and water, achieving storage and continuous supply of both. The sodium lignin sulfonate layer contains a large number of negatively charged sulfonic acid groups, and the chitosan layer contains a large number of positively charged amino groups. This alternating arrangement achieves mutual attraction between the charges of the sodium lignin sulfonate and chitosan layers, improving structural stability. Simultaneously, both the sulfonic acid and amino groups are highly hydrophilic, enabling the slow release of water from the sodium alginate hydrogel. By using eutectic urea, urea molecules are locked within the eutectic crystal and released slowly through dissolution, avoiding nitrogen loss caused by a large supply of urea in a short period. Furthermore, the simultaneous supply of urea and water avoids the problem of fertilizer being present but water is lacking in simple encapsulation methods, making it difficult for crops to absorb urea.

The present application relates to the technical field of agricultural liquid fertilizer, and specifically relates to a water-soluble organic suspended silicon liquid fertilizer, which is composed of a silicon source, a compounded organic carrier, a composite dispersion stabilizer, a defoaming agent and water; the compounded organic carrier comprises humic acid and amino acid; the composite dispersion stabilizer comprises sodium lignosulfonate and xanthan gum; the silicon source comprises potassium silicate; the weight of each component is as follows: potassium silicate 6-12 parts, humic acid 3-5 parts, amino acid 2-3 parts, sodium lignosulfonate 0.8-1.5 parts, xanthan gum 0.3-0.5 parts, defoaming agent 0.08-0.12 parts, and water is supplemented to 100 parts. The present application is designed in cooperation with the compounded organic carrier and the composite dispersion stabilizer, the organic carrier and the silicon source form a stable complex structure, the composite dispersion stabilizer inhibits the agglomeration of silicon particles through component cooperation, and a low-temperature aging process is matched, so that the suspension stability of the product is greatly improved.

This invention discloses a low-temperature negative electrode lead paste formulation and its preparation method. The raw materials are as follows by weight percentage: lead powder: 82%-88%, barium sulfate: 5%-12%, sodium lignosulfonate: 0.2%-1.0%, humic acid: 0.5%-1.0%, carbon black: 1%-2%, expanded graphite: 1%-2%, graphene: 0.5%-1.5%, and deionized water: balance. A mixture of spherical lead powder and flake lead powder (spherical powder accounting for 60%-70%) is used. The high specific surface area of ​​the spherical lead powder improves the wettability of the electrolyte, while the layered structure of the flake lead powder increases the porosity. The synergistic effect of these two materials increases the porosity of the negative electrode active material to 65%-70% (compared to approximately 55%-60% in traditional lead paste), accelerating the dissolution of lead sulfate and the diffusion of Pb²⁺.

The application provides a preparation method of a self-supporting graphene film with reversible conversion capability between two-dimensional and three-dimensional structures, and relates to the technical field of two-dimensional functional material preparation.The polyvinyl alcohol, agarose and sodium lignosulfonate are dissolved in deionized water to prepare a precursor solution and dry into a film, a femtosecond laser is used to induce the formation of a graphene film layer on the surface of the composite precursor film, and the interface desorption is triggered in a water environment, so that the graphene film is spontaneously detached as a whole and does not need to be mechanically peeled or chemically etched.The detached graphene film can exist independently without an external supporting substrate, and is curled into a three-dimensional structure in the form of a reel in water, and is restored to a two-dimensional flat structure under the spreading action of external force, so that reversible conversion between the two-dimensional and three-dimensional structures is realized.

This invention discloses a lignin-based nano-bactericide, its preparation method, and its application. The nano-bactericide is prepared from the following raw materials in parts by weight: 0.1-1 parts of the bactericide active component; 1-3 parts of sodium lignosulfonate; 4-7 parts of organic solvent; 0.8-2 parts of emulsifier; 1.0-2.0 parts of colloidal protectant; 4-7 parts of cationic monomer; 0.4-2 parts of soluble metal salt; and 40-70 parts of deionized water. This invention also specifically discloses the preparation method of the nano-bactericide and its application in preparing antibacterial agents. This invention utilizes clean, simple, and environmentally friendly electrostatic self-assembly to construct the nano-bactericide, and effectively reinforces the capsule with iron ions. While ensuring that the original antibacterial activity of the bactericide is not affected, it effectively prevents the bactericide from degrading due to contact with the external environment, further improving the stability and practical application effect of the bactericide.

The application discloses a kind of ultra-high temperature aerobic fermentation composite microbial inoculum for treating organic solid waste, belonging to solid waste biological treatment technical field.The composite microbial inoculum is compounded by functional microbial inoculum group and auxiliary group, the functional microbial inoculum group includes thermophilic side spore mold agent, thermophilic bacillus agent, high-temperature actinomycete agent, fecal alkali-producing bacteria agent, the auxiliary group is composed of modified diatomite, coated fungus bran carbon, oyster shell calcined powder, kitchen waste pretreatment powder, sodium lignosulfonate and sodium gluconate.The composite microbial inoculum is adapted to municipal sludge, livestock and poultry manure, open-air strip-pile type fermentation of kitchen waste mixed solid waste, can be quickly heated to 80 DEG C or more, ultra-high temperature duration is greater than or equal to 7.8 days, roundworm egg inactivation rate is greater than or equal to 99.9%, comprehensive antibiotic degradation rate is greater than or equal to 90.2%, heavy metal comprehensive passivation rate is greater than or equal to 85.5%, effectively control odor emission, can be applied to municipal sludge, livestock and poultry manure, open-air strip-pile type fermentation of kitchen waste mixed solid waste, and has good industrial application value.

This invention relates to the field of green materials engineering technology, and discloses a low-VOC environmentally friendly pressure-sensitive adhesive for vehicle body stickers and its preparation method. The adhesive comprises deionized water, enzymatically hydrolyzed sodium lignin sulfonate powder, hydrogenated rosin glycerol ester, oxidized starch aqueous solution, ammonia, glucono-δ-lactone powder, and zirconium carbonate ammonium solution. During preparation, a microemulsion is formed by dispersing hydrogenated rosin glycerol ester using the amphiphilic properties of lignin under a shear field. After mixing with oxidized starch, latent acid, ammonia, and a crosslinking agent are added under laminar flow conditions. This invention utilizes the physicochemical coupling mechanism of ammonia volatilization and the thermal release of acid from glucono-δ-lactone to achieve synchronous homogeneous crosslinking at a thick coating depth, solving the problem of cohesive gradient defects. Simultaneously, it utilizes high-valence zirconium ions to construct a dynamic reversible coordination dissipation network, effectively dissipating peel tensile stress, avoiding cohesive-destructive residues, and eliminating the risk of VOCs and interfacial pinholes caused by small-molecule emulsifier residues, significantly improving heat resistance and tack performance.

This invention discloses a composite expander and its application in the negative electrode plate of a lead-acid battery, belonging to the field of lead-acid battery technology. Ammonium persulfate is used as an oxidant, added to an ethanol solution mixture of pyrrole / aniline monomers (conductive monomers), sodium lignosulfonate, and acrylamide, causing an oxidation reaction. Subsequently, it is calcined at high temperature under a nitrogen or argon atmosphere to obtain a compound in which a composite polymer encapsulates sodium lignosulfonate. After calcination under a protective gas atmosphere, some of the composite material carbonizes, forming a carbon-encapsulated sodium lignosulfonate composite expander. The carbon-encapsulated composite expander can slow down the consumption of sodium lignosulfonate. Using the composite expander results in a higher hydrogen evolution overpotential and more durable low-temperature performance. The application of the composite expander in the negative electrode plate of a lead-acid battery improves the sulfation problem of the negative electrode plate operating under high efficiency partial charge conditions, extending the cycle life of the lead-acid battery.

This invention belongs to the field of battery technology and provides a lead paste for lead-carbon batteries' negative electrode based on inorganic additives to suppress hydrogen evolution. By weight fraction, it comprises: 100 parts lead powder, 0.1-0.15 parts carbon black, 0.08-0.15 parts graphene, 0.8-1.3 parts bismuth, 0.05-0.1 parts short fibers, 0.8-1 parts barium sulfate, 0.1-0.2 parts humic acid, 0.2-0.3 parts sodium lignosulfonate, 8-11 parts sulfuric acid solution, and 9-12 parts deionized water. This invention, by limiting the use of carbon materials and specifying the form of bismuth addition, suppresses the phenomenon of lead easily detaching during cycling due to changes in the deposition / dissolution crystallization habit, thereby delaying capacity decay.

This invention provides a method for preparing and applying a controlled-release agent of emamectin benzoate, belonging to the field of nanopesticide technology. This invention uses PFC-1, a hydrogen-bonded organic framework material with a porous structure, as a drug carrier. After loading emamectin benzoate through its porous structure, the loaded system is further modified by surface encapsulation with sodium lignosulfonate. The resulting nano-formulation with controlled-release function is called emamectin benzoate nano-controlled-release agent. The prepared drug-loaded system exhibits good insecticidal activity against diamondback moth. The preparation method includes a method for preparing emamectin benzoate-loaded agents. The prepared system has a high loading capacity of 19.6%. The drug-loaded system provided by this invention has good insecticidal effect against diamondback moth and exhibits pH-selective release effect in the midgut environment of the diamondback moth.

This invention relates to the field of sludge conditioner technology, specifically a modified starch-based sludge conditioner and its preparation method. The prepared conditioner is a green, environmentally friendly, and recyclable modified starch-based sludge conditioner. When used for sludge conditioning, component A and component B are used in combination to form a synergistic mechanism of oxidation-flocculation-skeleton, effectively weakening the water-holding capacity of the sludge while increasing its adsorption capacity for heavy metal ions. Component A is prepared by compounding a pH adjuster, persulfate, and sludge-based nitrogen-doped magnetic biochar. Magnetic particles are loaded onto sodium lignosulfonate using water as a solvent with ultrasonic assistance, then combined with chitosan, and subsequently reacted with acrylamide, cationic monomers, and hydrophobic monomers to obtain magnetic composite sodium lignosulfonate. Component B is prepared by compounding the magnetic composite sodium lignosulfonate, modified starch, and hydrotalcite.

This invention discloses a method for preparing hydrophobically modified alginate, belonging to the field of aerogel adsorption technology. The hydrophobically modified alginate of this invention can directionally adsorb chromium-containing wastewater, solving the problems of low capacity, poor water solubility, and slow adsorption rate of traditional biomass adsorbents. It also utilizes the synergistic effect of multiple functional groups to achieve full-coverage adsorption of chromium, exhibiting good adsorption capacity and stability in the deep treatment of industrial chromium-containing wastewater. This invention utilizes the oxygen-containing groups abundant in sodium lignosulfonate and sodium alginate, which can strongly complex and electrostatically adsorb chromium ions, and provide sites for subsequent chromium ion reduction. Furthermore, after modification with γ-aminopropyltriethoxysilane, potassium hexatitanate whiskers have amino groups on their surface, which can electrostatically attract chromium ions in water, achieving targeted capture of anionic chromium.