3410 results about "Sulfonate" patented technology

It is disclosed new conducting and stretchable hydrogels and “one-pot” process to making them from natural and eco-friendly components, including gelatin, chitosan, and glycerol. Various conducting materials, such as poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS), thermally reduced graphene (TRG), or MXene are introduced in the hydrogels to enhance their conductivity. The resulting conducting hydrogels exhibit remarkable robustness, do not require crosslinking agent, and possess a unique thermo-reversible property, simplifying the fabrication process and ensuring enhanced long-term stability. Moreover, their fabrication is sustainable, employing environmental-friendly materials and processes, while retaining their skin-friendly characteristics. It is also disclosed hydrogel electrodes that were tested for ECG signal acquisition and outperformed the commercial electrodes. The hydrogel-based electrodes deliver high-quality ECG signals, boasting a superior signal-to-noise ratio (SNR) and remarkable resilience against interference and motion artifacts, compared to their commercial AgCl counterparts.

The invention relates to the technical field of fracturing fluids, and discloses a preparation method of a temperature-resistant and salt-resistant fracturing fluid, which comprises the following steps: carrying out polymerization reaction on acrylamide, acrylic acid and an acrylamide sulfonic acid monomer to obtain a polymer thickening agent, and compounding the polymer thickening agent with a cross-linking agent, a clay stabilizer and the like to obtain the temperature-resistant and salt-resistant fracturing fluid. The polymer thickening agent contains long-chain alkyl, a physical cross-linked spatial network structure can be formed through a hydrophobic association effect, the hydrodynamic volume is increased, a good tackifying effect is achieved, and after high-speed shearing, the long-chain alkyl can be cross-linked again to form a spatial network structure, so that a solution still keeps very high apparent viscosity, and the viscosity of the solution is improved. Good anti-shearing performance is realized. The acrylamide sulfonic acid monomer contains a sulfonate group and is used as a temperature-resistant and salt-resistant monomer, so that the polymer thickening agent has good temperature resistance and salt resistance, and the fracturing fluid still keeps relatively high apparent viscosity after being subjected to high-temperature heat treatment and in formation water with high salinity.

The invention belongs to the technical field of cement manufacturing, and particularly relates to high-strength weather-resistant environment-friendly cement and a preparation method thereof. The environment-friendly cement is prepared from the following raw materials in parts by mass: 40 to 55 parts of Portland cement, 15 to 25 parts of fly ash, 10 to 15 parts of slag powder, 6 to 12 parts of biomass reinforced composite mineral material, 2 to 4 parts of nano silicon dioxide, 1 to 4 parts of modified polymer emulsion and 1 to 3 parts of additive. The biomass reinforced composite mineral material is prepared from zeolite, bentonite, sepiolite and chitosan; the modified polymer emulsion comprises a modified polyacrylate emulsion and a modified polystyrene-butadiene emulsion in a mass ratio of (1-3): 1; the additive is prepared from basalt fiber, sodium lignin sulfonate, a rosin thermopolymer and sodium gluconate. The environment-friendly cement prepared by the invention not only has high strength and good weather resistance, but also remarkably reduces carbon footprint and saves natural resources.

The preparation method comprises the following steps: S1, mixing a hydrochloric acid solution with organic sodium sulfonate, then adding aniline and water, stirring and dissolving, then adding an oxidizing agent to carry out doping reaction, and carrying out suction filtration, washing, drying and grinding on a reaction product to obtain sodium-modified polyaniline; s2, uniformly mixing a negative electrode active material, a conductive agent and polytetrafluoroethylene, and then adding sodium polyaniline and an organic sodium supplement agent in a nitrogen or inert atmosphere for fibration treatment to obtain fibration powder; and S3, performing hot pressing on the fiberized powder onto the current collector to obtain the lithium ion battery. The prepared pre-sodium-modified negative electrode dry-method electrode has relatively good peeling strength and pole piece flexibility, and the condition that a traditional wet-method thick electrode is easy to crack is relieved; meanwhile, the dry-method electrode subjected to sodium modification treatment can induce uniform deposition of sodium ions, so that the dynamic performance of the whole sodium battery is improved, the problem of cyclic sodium precipitation is avoided, and the service life of the battery is further prolonged.

The invention relates to the technical field of preparation of surfactants, in particular to a PPO / PEO block Gemini ductile surfactant suitable for high-temperature and high-salt oil reservoirs and a preparation method of the PPO / PEO block Gemini ductile surfactant. The preparation method comprises the following steps: by taking fatty alcohol as an initial raw material, carrying out gradual addition on the fatty alcohol, propylene oxide (PO) and ethylene oxide (EO) through a potassium hydroxide / 18-crown ether-6 catalytic system to prepare an APOnEOm intermediate; the preparation method comprises the following steps: carrying out esterification with a polyethylene glycol bismaleate connecting group, and finally sulfonating with sodium hydrogen sulfite to obtain polyethylene glycol bismaleate diester sodium sulfonate (T-APOnEOm-S). By regulating and controlling the PPO / PEO block ratio, the product has excellent temperature resistance and salt resistance, is suitable for high-temperature and high-salt oil reservoirs, has strong emulsifying capacity, can reduce the oil-water interfacial tension to 10 <-3 > mN / m level, and remarkably improves the oil recovery rate. The preparation process is mild in condition and adjustable in product performance, and has important application value in the field of tertiary oil recovery.

The invention relates to the field of agricultural microbial preparations, in particular to a complex microbial inoculant sustained-release granule for preventing and treating sweet potato stem nematode disease and a preparation method of the complex microbial inoculant sustained-release granule. Comprising the following components in parts by weight: 15-25 parts of paecilomyces lilacinus viable bacterium powder, 10-20 parts of bacillus thuringiensis viable bacterium powder, 10-20 parts of streptomyces viable bacterium powder, 5-15 parts of bacillus subtilis viable bacterium powder, 15-25 parts of charcoal, 5-15 parts of sodium alginate, 5-15 parts of humic acid, 5-10 parts of chitosan, 3-8 parts of calcium silicate, 1-5 parts of mannitol and 1-5 parts of sodium lignin sulfonate. Four microorganisms with complementary functions, namely paecilomyces lilacinus, bacillus thuringiensis, streptomycete and bacillus subtilis, are adopted, the sweet potato stem nematode disease is synergistically controlled through multiple action mechanisms, and the control effect and the stability are remarkably improved.

The invention discloses a sulfonate-based electrolyte and a preparation method and application thereof, and belongs to the technical field of electrolyte preparation, the electrolyte comprises a solute, a sulfonate-based compound and a cosolvent, the mass fraction of the solute is 1-90%, the mass fraction of the sulfonate-based compound is 0.1-99%, and the mass fraction of the cosolvent is 0-99%. According to the sulfonate-based electrolyte as well as the preparation method and the application thereof, the sulfonate-based solvent is used as a main solvent, a cosolvent, an additive and the like to develop a novel electrolyte, so that the balance between strong solvation and rapid charging capability of the electrolyte is promoted, and a high-voltage battery with high energy density is developed.

The invention discloses a high-RAP-doping-amount cold-mixed asphalt regenerant, and particularly relates to the technical field of asphalt regenerant, the high-RAP-doping-amount cold-mixed asphalt regenerant comprises the following raw materials: hydrogenated extract oil, acetyl tributyl citrate, a low-temperature penetrant, pre-swelling SEBS master batch, a crosslinking catalyst and a microcapsule antioxidant. Molecular-level branched-chain alkyl sodium sulfonate can be wedged into aged asphalt microcracks at the temperature of 65 DEG C, lost light components are balanced and supplemented through hydrogenated extract oil, an SEBS micro-crosslinking network forms an in-situ reinforcement effect at the temperature of 90 DEG C, the triple regeneration effect of regenerated asphalt is achieved, and the service life of the regenerated asphalt is prolonged. Nano-zinc oxide is treated by a silane coupling agent and then is modified by using methyl methacrylate and potassium persulfate, so that the nano-zinc oxide is coated with polymethyl methacrylate, the compatibility of the microcapsule antioxidant and the recycled asphalt can be improved, and the anti-aging performance of the recycled asphalt is improved.

The invention relates to the technical field of dispersing agents, and particularly discloses a high-concentration water-based graphene dispersing agent. The high-concentration water-based graphene dispersing agent is prepared from the following raw materials in parts by weight: 25 to 30 parts of a modified nonionic surfactant, 8 to 12 parts of sodium lignin sulfonate, 0.4 to 0.8 part of a de-foaming agent and 90 to 100 parts of de-ionized water, the modified nonionic surfactant is prepared by the following steps: carrying out dehydration esterification reaction on 1-pyrene butyric acid and N-hydroxysuccinimide, carrying out nucleophilic substitution reaction on the obtained product and polyethylene glycol monododecyl ether to obtain modified 1-pyrene butyric acid, and finally polymerizing the modified 1-pyrene butyric acid and n-butyl acrylate. The method is easy to operate, graphene does not need to be subjected to oxidation reduction, the integrity of a graphene sheet layer can be completely kept, and the performance of the graphene can be fully exerted; the prepared graphene dispersing agent realizes efficient dispersing effect, excellent stability and environment-friendly safety characteristics, and provides solid technical support for wide application of graphene in multiple fields.

The invention provides loofah sponge nanocellulose hydrogel and a preparation method thereof.The preparation method comprises the following steps that anhydrous citric acid, choline chloride and water are mixed to react, and a ternary eutectic solvent is obtained; dispersing loofah sponge purified cellulose in a ternary eutectic solvent, washing and filtering a product to be neutral, dispersing the product in water, and performing ultrasonic treatment to obtain loofah sponge nanocellulose turbid liquid; dissolving sodium lignin sulfonate and lithium chloride in a sodium hydroxide solution to obtain a precursor solution; mixing the loofah sponge nanocellulose suspension with water, polyacrylamide, ammonium persulfate and N, N-methylene bisacrylamide, pouring the precursor solution into the loofah sponge nanocellulose suspension, uniformly stirring the mixture, pouring the mixture into a mold, and sealing the mold; and forming to obtain the loofah sponge nanocellulose hydrogel. The invention also provides an application of the hydrogel. The hydrogel disclosed by the invention has excellent biocompatibility, mechanical property and conductivity, has a wide application prospect in the field of flexible electronics, and is simple in preparation process, low in cost, green and environment-friendly.

To provide a water-soluble chelating polymer that can rapidly trap a trace amount of heavy-metal ions to reduce the amount of heavy-metal ions to a ppm level or lower in a short time.Use a water-soluble chelating polymer comprising an anionic polymer having a carboxy group, a sulfonate group and / or a sulfate group bonded through an ionic bond to a chelating functional group having a cationic functional group, wherein the water-soluble chelating polymer contains 0.2 to 6 mmol / g of the chelating functional group and has a weight-average molecular weight in the range of 30,000 to 1,000,000.

The invention provides highly phase-separated polyurethane as well as a preparation method and application thereof, and belongs to the technical field of high polymer materials. The highly-phase-separated polyurethane is prepared from the following raw materials: hydrophilic modified polyether polyol, an isocyanate monomer, a catalyst and a chain extender, the hydrophilic modified polyether polyol is prepared from the following raw materials: a ring-opening initiator and an epoxy compound; the ring-opening initiator comprises dihydroxy carboxylic acid and / or dihydroxy sulfonate. The highly-phase-separated polyurethane is clear and stable in microphase structure and has excellent mechanical properties and water resistance.

The invention discloses zwitter-ion supramolecular hydrogel based on anion-pi as well as a preparation method and application of the zwitter-ion supramolecular hydrogel. The hydrogel is formed by self-assembly of a zwitterionic copolymer and a p-styrenesulfonic acid copolymer. According to the supramolecular hydrogel disclosed by the invention, the supramolecular hydrogel can be rapidly formed only by simply mechanically mixing the zwitterionic polymer copolymer and the p-styrene sulfonate copolymer solution, and the supramolecular hydrogel is endowed with excellent injectability and self-repairing performance due to the dynamic cross-linking characteristic. The hydrogel is composed of zwitterions with excellent immunocompatibility and poly (p-styrene sulfonate) with heparin-imitating performance, so that the hydrogel has excellent immunocompatibility, can play a role in various in-vivo application scenes, and in addition, the hydrogel can be used for preparing an anti-inflammatory drug. The dynamic cross-linked network based on anion-pi interaction and the heparin-like structure are very beneficial to protein preservation, and have wide application prospects in the fields of protein delivery and cell encapsulation.

The invention relates to a phosphorus-free zinc-free seawater special-purpose scale and corrosion inhibitor, which comprises, by weight, 20-25% of sulfonic acid modified polyaspartic acid, 8-12% of quaternized chitosan, 5-10% of a sulfonate copolymer, 5-10% of polyepoxysuccinic acid, 1-3% of benzotriazole or methyl benzotriazole, 0.5-1% of sodium tungstate, and the balance of deionized water. According to the formula, traditional corrosion inhibitors such as phosphorus and zinc are completely abandoned, functions are achieved through natural polymer derivatives such as sulfonic acid modified polyaspartic acid and quaternized chitosan, and the scale and corrosion inhibitor has the following environmental protection advantages that the scale and corrosion inhibitor does not contain phosphorus and zinc elements at all, and water eutrophication and heavy metal accumulation caused by a traditional phosphorus and zinc formula are avoided.

The invention discloses a functional fracturing fluid directly prepared from flow-back fluid of complex water quality. The fracturing fluid is prepared by directly adding a salt-tolerant polymer and an ion trapping agent into the flow-back fluid. The addition amount of the salt-tolerant polymer accounts for 0.15-0.3% of the total mass of the fracturing fluid, and the addition amount of the ion trapping agent is 100-500ppm. The salt-tolerant polymer is prepared by copolymerization of acrylamide, a salt-tolerant monomer and an allyl quinoline monomer, and the molecular weight of the polymer is 4-15 million. The salt-tolerant monomer is acrylamide polyoxyethylene sodium benzenesulfonate or acrylamide sodium sulfonate. The ion trapping agent is prepared from amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), ethylene glycol bis (2-aminoethyl ether) tetraacetic acid, p-methylphenyl diethanol amine, 2, 3-epoxypropyl trimethyl ammonium chloride, fatty alcohol-polyoxyethylene ether, citric acid and tetrahydrofurfuryl acrylate. The fracturing fluid can be directly prepared from the flow-back fluid, the flow-back fluid does not need to be pretreated, and repeated utilization of the fracturing flow-back fluid is achieved.

The invention belongs to the technical field of preparation of blocking removers, and particularly relates to a composite chelating blocking remover for an oil field and a preparation method of the composite chelating blocking remover. The composite chelating blocking remover for the oil field is prepared from the following raw materials in percentage by mass: 7 to 9 percent of 1-butyl-3-methylimidazole dodecyl sulfonate, 5 to 7 percent of erucamide propyl hydroxypropyl sulfobetaine, 3 to 4 percent of di-(2-ethylhexyl) sodium sulfosuccinate, 4 to 5 percent of ethylenediamine di-o-hydroxyphenylacetic acid, 5 to 7 percent of N, N '-di (2-hydroxybenzyl) ethylenediamine-N, N'-bis (2-hydroxybenzyl)-N, N '-bis (2-ethylhexyl)-N, N'-bis (2-hydroxybenzyl)-N, N '-bis (2-hydroxybenzyl)-N, N'-bis (2-hydroxyphenyl)-N, N '-bis (2-hydroxyphenyl)-N, N'-bis (2-hydroxyphenyl)-N The cleaning agent is prepared from the following components in percentage by weight: 3 to 4 percent of N, N '-diacetic acid, 2 to 3 percent of O-(3-(benzyloxy) propyl) hydroxylamine, 1 to 2 percent of heptadecenyl hydroxyethyl imidazoline quaternary ammonium salt, 1 to 1.5 percent of dimethyl diallyl ammonium chloride homopolymer and the balance of water. The composite chelating blocking remover for the oil field has excellent scale dissolution rate and paraffin inhibition rate when being applied to complex scale blocking removal of the oil field.

The present invention provides a multifunctional silane coupling agent, which is prepared from commercially available 3-aminopropylsilane coupling agent, acryloxy polyetheramine, and one of an alkylating agent, polyether sulfonate, γ-propane sultone or γ-butyrolactone through Michael addition reaction and quaternization reaction. The multifunctional silane coupling agent is a new variety carrying zwitterions, quaternary ammonium cations and polyether chains, enriching the functions and application scope of silane coupling agents. It can endow some modified materials with surface hydrophilicity, conductivity, antibacterial, antifogging, antifouling, biocompatibility, anticoagulant and wet lubrication properties, etc. at the same time.

The invention provides weather-resistant anti-freezing road concrete and a preparation method thereof, and belongs to the technical field of concrete. The concrete comprises the following components: sulphoaluminate cement, Portland cement, silica fume, fly ash, modified granite gravel coarse aggregate, medium sand fine aggregate, silica fume blended fiber, silica fume blended polyacrylonitrile fiber, a composite air entraining agent, a functional modifier, a composite antifreeze agent, pre-absorbent zeolite powder and the like. The preparation method comprises the following steps: modifying granite macadam with Al (H2PO4) 3, SiO2 and methoxypolyethylene glycol triethoxysilane, and modifying with a lithium silicate aqueous solution to obtain the modified granite macadam coarse aggregate. The composite air entraining agent comprises a JRY-Q air entraining agent and sodium alpha-olefin sulfonate. The functional modifier is prepared from gas phase method spherical nano silicon dioxide and nano alpha-Al2O3. The composite antifreeze agent comprises ethylene glycol butyl ether acetate and modified calcium carbonate. The modified calcium carbonate is obtained by sequentially modifying nano calcium carbonate with calcium chloride, a KH-550 silane coupling agent and stearic acid.

The invention discloses high-specific-surface-area micro-mesoporous biomass porous carbon as well as a preparation method and application thereof. The method comprises the following steps: performing hydrothermal catalytic reaction on tobacco stems in an H2O2 solution to loosen a compact structure and increase oxygen-containing functional groups, fully mixing pretreated tobacco stem hydrothermal carbon and sodium lignin sulfonate in an aqueous solution in a solid-liquid form, adding glutaraldehyde to perform cross-linking reaction, and drying to obtain the tobacco stem hydrothermal carbon / sodium lignin sulfonate composite material. The preparation method comprises the following steps: preparing CaCO3 and tobacco stem into a composite biomass charcoal source with a stable three-dimensional network structure, preparing a composite biomass / CaCO3 precursor through an in-situ coprecipitation method, and finally carrying out high-temperature carbonization to obtain the tobacco stem / lignin composite porous carbon with a micro-mesoporous structure, a high specific surface area and a stable structure. The porous carbon material not only has abundant and mutually communicated hierarchical porous structures and high specific surface area, but also contains abundant active oxygen-containing functional groups, so that the surface characteristics of the porous carbon are improved, more adsorption sites can be provided, and the adsorption performance of the porous carbon material is greatly improved.

The invention belongs to the field of hydrometallurgy, and particularly discloses a high-purity vanadium oxide electrode and a preparation method thereof. The method comprises the following steps: pre-treating the alkaline vanadium leaching solution by using an activated aluminum oxide adsorption column to obtain a pre-treated solution; adding a composite impurity removal agent taking modified lignosulfonate as a main agent into the pretreatment liquid for primary impurity removal to obtain primary impurity-removed filtrate; adding a calcium hydroxide suspension and a flocculating agent into the primary impurity-removed filtrate for secondary impurity removal to obtain secondary impurity-removed filtrate; purifying the secondary impurity-removed filtrate by using an ion exchange column to obtain a purified solution; ammonium salt is added into the purified liquid for vanadium precipitation, and ammonium metavanadate crystals are obtained; calcining the ammonium metavanadate crystal to obtain high-purity vanadium pentoxide; and preparing the high-purity vanadium oxide electrode by using the high-purity vanadium pentoxide. According to the scheme, the high-purity vanadium pentoxide is prepared by taking the alkaline vanadium leaching solution as a raw material through a multi-stage deep impurity removal process, and the high-purity vanadium oxide electrode is prepared by taking the alkaline vanadium leaching solution as the raw material.

The invention discloses an artificial SEI material and a preparation method thereof, an artificial SEI film and an artificial SEI film modified negative electrode. The artificial SEI material is an organic polymer brush (CNF-g-PSSX) prepared by grafting cellulose nanofibers with polystyrene sulfonate. The polymer brush is of a crystal structure and has a firm framework; and the side chain of polystyrene sulfonate has rich-SO3 functional groups which are matched with cations in sulfonate, so that a rapid ion transmission channel is provided, high-current-density circulation can be realized, and good interface contact is ensured. Due to a special molecular topological structure and a multi-component synergistic effect, when the organic polymer brush forms an artificial SEI film, high mechanical strength, high ionic conductivity and low interface impedance can be obtained at the same time, and through strong electrostatic repulsion between a negatively charged-SO3 group and the surface of a negatively charged lithium dendrite tip, the electrochemical performance of the artificial SEI film is improved. An obvious inhibition effect is shown on the continuous growth of dendritic crystals.

The invention discloses an environment-friendly titanium alloy etching solution as well as a preparation method and an etching method thereof, and relates to the technical field of printed circuit board production. The environment-friendly titanium alloy etching solution comprises the following components in percentage by mass: 10-30% of ammonium fluoride, 5-15% of an oxidant, 0.1-1% of a wetting agent, 0.3-1.5% of a stabilizer, 2-10% of an accelerator and 0.5-3% of a lateral erosion inhibitor. The stabilizer is selected from at least one of Tween 20, Tween 40 and Tween 85; and the accelerator is selected from at least one of sodium methylene dinaphthalene sulfonate, sodium dibutyl naphthalene sulfonate and dodecyl benzoate. The environment-friendly titanium alloy etching solution disclosed by the invention can selectively and quickly etch titanium alloy without corroding a copper surface and other metals, so that etching factors are effectively increased, and the problem of lateral erosion of a fine circuit is solved. Meanwhile, ammonium fluoride is used as a main agent of the etching liquid instead of hydrofluoric acid, so that the environmental pollution can be effectively reduced.

The invention relates to a waste photovoltaic panel recycling method which comprises the following steps: crushing a waste photovoltaic panel until the size of the waste photovoltaic panel is 80-160 meshes, and preparing powder; carrying out acid leaching treatment on the powder, and respectively collecting a leaching solution and a solid material; an acid leaching solution adopted in the acid leaching treatment is a mixed acid aqueous solution of hydrochloric acid and sulfuric acid; the pH of the leachate is adjusted to be neutral with an alkaline agent, then the leachate is mixed with metal iron to be subjected to a replacement reaction, and metal copper is prepared; the solid material is mixed with water, hydrofluoric acid and a flotation agent are added into the obtained mixture for flotation treatment, floats and precipitates are collected respectively, the floats comprise silicon powder, the precipitates comprise glass powder, and the flotation agent comprises one or two of hexadecyl potassium hydrogen phosphate and sodium dodecyl sulfate. According to the recycling method, the silicon powder, the glass powder and the metal copper can be comprehensively recycled from the waste photovoltaic panel.

The invention discloses a high-initial-efficiency fast-charge graphite composite material and a preparation method thereof, the composite material is of a core-shell structure, the core is graphite, and the shell is lithium sulfonate / lithium molybdate and an amorphous carbon coating layer thereof; the mass ratio of the shell is 5-15 wt% according to the mass ratio of the composite material being 100%. The preparation method comprises the following steps: adding a molybdenum compound into a solvent to prepare a solution, adding graphite oxide, an inorganic lithium salt and a carbon nanotube conductive solution, reacting for 2-12 hours at the temperature of 50-120 DEG C, filtering, carbonizing filter residues to obtain a lithium molybdate conductive agent coated graphite material, and depositing a lithium sulfonate derivative on the surface of the lithium molybdate conductive agent coated graphite material by an atomization method to obtain the lithium molybdate conductive agent coated graphite material. The electron and ion conductivity of the material can be improved, and the rate and the first efficiency of the material can be improved.

The invention relates to the technical field of PC transparent flame-retardant toughening modification, in particular to phenolic hydroxyl-terminated modified polysiloxane with a side chain containing phenyl and sulfonate groups and a preparation method of copolymerized PC. The modified polysiloxane is prepared by the following steps: performing ring opening polymerization on phenol-containing double end sockets and cyclotetrasiloxane to obtain modified polysiloxane containing double bonds and phenyl functional groups, and grafting sulfonate through a thiol-ene click chemical reaction. Diphenyl carbonate, bisphenol A and the modified polysiloxane are used as raw materials, a polysiloxane-PC block copolymer is formed through copolymerization, efficient flame retardance and high transparency are achieved, and meanwhile extremely high low-temperature impact strength is achieved.

The invention provides a thermal response self-ceramization fireproof coating and a preparation method thereof. The thermal response self-ceramization fireproof coating is prepared from the following raw materials in parts by mass: 3 to 10 parts of acrylic monomer, 3 to 10 parts of organic sulfonate, 1 to 4 parts of silane coupling agent, 0.5 to 3 parts of silicate ester, 4 to 6 parts of ceramic precursor, 3 to 6 parts of fluxing agent and 0.05 to 0.4 part of initiator. The fluxing agent comprises a component A and a component B, the component A is one of boric oxide, zinc borate or low-melting-point glass powder, and the component B is one of phosphorus pentoxide and ammonium polyphosphate. The silane coupling agent can be copolymerized with an acrylic monomer to construct a C-C main chain, the C-C main chain and silicate ester are subjected to hydrolytic condensation to form a Si-O-Si three-dimensional network, a chemical cross-linked skeleton is formed, and the chemical cross-linked skeleton can generate silicon dioxide at high temperature to participate in a ceramization reaction; the ceramic precursor and silicate ester can form a strong physical cross-linking effect, so that the fireproof coating with a chemical and physical double-cross-linked network can be formed, and the fireproof coating has excellent mechanical property and machinability at normal temperature.

The invention provides a low-temperature-impact-resistant food packaging material and a preparation method and application thereof.The low-temperature-impact-resistant food packaging material is prepared from, by mass, 100 parts of polylactic acid, 1-10 parts of modified layered double hydroxide and 5-40 parts of hyperbranched polyester; wherein the modified layered double hydroxide is obtained by treating layered double hydroxide with a composite anionic surfactant and then treating the treated layered double hydroxide with an organic cationic compound with a long alkyl chain; the composite anionic surfactant comprises a first anionic surfactant and a second anionic surfactant; wherein the first anionic surfactant comprises sodium dodecyl sulfate; the second anionic surfactant comprises a sulfonate anionic surfactant containing an amido bond and a catechol structure. Through the formula design, the impact toughness of the material at low temperature can be improved while the mechanical property of polylactic acid is maintained, and the material can be suitable for the field of food packaging.

The invention discloses a method for preparing a polyvinyl polyamide composite reverse osmosis membrane by coupling reversed-phase interfacial polymerization with lignosulfonate, which adopts a reversed-phase interfacial polymerization method and comprises the following steps: firstly adding an oil phase containing polyacyl chloride, and then adding a water phase containing amine monomers and lignosulfonate. Molecules of the lignosulfonate contain more sulfonate radicals, so that the lignosulfonate is endowed with hydrophilicity, meanwhile, a large number of active functional groups such as phenolic hydroxyl groups, alcoholic hydroxyl groups and carboxymethyl exist, and oxygen atoms, sulfur atoms and the like in the functional groups contain unbonded electron pairs and can participate in interfacial polymerization reaction to form a cross-linked structure; the trade-off effect of the flux and the rejection rate of the reverse osmosis membrane is broken, and the polyvinyl polyamide reverse osmosis membrane with high flux and high rejection rate is obtained. The raw material of the polyethylene base material is low in price, and the product can be applied to the fields of water treatment, seawater desalination, brackish water desalination and the like on a large scale.

The invention relates to a rapid detection kit for large yellow croaker pyramidal worm, and belongs to the field of pathogen biological diagnosis in aquaculture. The kit comprises a nucleic acid releasing agent and further comprises a primer and a probe which are used for detecting the large yellow croaker pyramidal worm. The kit comprises a nucleic acid releaser; the formula of the nucleic acid releasing agent comprises tris (hydroxymethyl) aminomethane hydrochloride with the final concentration of 100 mM, sodium chloride with the final concentration of 100 mM, sodium dodecyl sulfate with the final concentration of 1 wt%, sodium alpha-olefin sulfonate with the final concentration of 3 wt%, sodium lauroyl glutamate with the final concentration of 1.2 wt%, betaine with the final concentration of 1 wt% and water as a solvent. The sequences of the primer and the probe for detecting the Pseudosciaena crocea pyramidal are 5 '-TATGGGCAATTCTGAATCCT-3', 5 '-TCTTTTCTGATCCCTGAAT-3' and 5 '-FAM-GTCGGTGGAGTGATTTGTTTG-3'. The kit disclosed by the invention is simple to operate, provides a tool for diagnosis, prevalence monitoring, prevention and control of the Pseudosciaena crocea pyramidal, and has a very high application value.

The invention discloses high-performance anti-wear engine lubricating oil as well as a preparation method and application thereof. The high-performance anti-wear engine lubricating oil is prepared from the following raw materials: self-developed lubricating oil base oil, poly-alpha-olefin, zinc dialkyl dithiophosphate, calcium sulfonate, polyisobutylene succinimide, an antioxidant, polymethacrylate, an organic molybdenum complex, a de-foaming agent and a pour point depressant. The preparation method comprises the following steps: 1) synthesizing 9, 10-bis (2-tert-butyl-4-methylphenoxy) trimethylolethane stearate as base oil of the lubricating oil; and 2) mixing the base oil with other assistants to obtain the high-performance anti-wear engine lubricating oil. According to the preparation method, novel-like synthetic ester oil is firstly prepared, a phenol group and a large steric hindrance substituent group are introduced into a polymer, the anti-oxidation function is directly built in base oil molecules, meanwhile, super-strong heat resistance is achieved, and finally the high-performance anti-wear engine lubricating oil is obtained and can be applied to high-end application scenes such as aero-engines or gas turbines.