309 results about "Sodium Acrylate" patented technology

The invention relates to the technical field of medical dressings, in particular to a perianal drug dressing of a multi-layer flow guide composite fabric and a preparation method and application of the perianal drug dressing of the multi-layer flow guide composite fabric. The perianal drug dressing is of a four-layer structure, a wet tissue adhesion layer is made of polydopamine modified chitosan / oxidized hyaluronic acid hydrogel, and wet-state adhesion is achieved; the drug sustained-release layer is used for dispersing mesoporous silica loaded with ciprofloxacin hydrochloride / defensin and chitosan microspheres loaded with epidermal growth factors / lonicera japonica into a polycaprolactone fiber membrane to achieve synergistic antibacterial and healing promotion; the directional flow guide layer is of a gradient wettability sandwich structure with a bionic micro-channel, and one-way rapid drainage can be achieved; the high-absorption outer layer is carboxymethyl cellulose / sodium polyacrylate composite sponge, liquid is locked efficiently, the wound surface is kept dry and comfortable, the clinical problem in perianal infection wound treatment can be effectively solved, and the treatment effect and the patient comfort are remarkably improved.

The invention discloses a preparation method and application of a ceramic glaze layer protecting and repairing material, and belongs to the technical field of cultural relic protection. The preparation method comprises preparation of a core-shell self-repairing nanocapsule, and the preparation of the core-shell self-repairing nanocapsule comprises the following steps: reacting a calcium chloride solution with a sodium hydroxide solution, then adding sodium polyacrylate and nano ZnO, and carrying out dispersion, centrifugation, washing and other operations to prepare the nano Ca (OH) 2-ZnO composite material. The nano Ca (OH) 2-ZnO composite material of the core-shell self-repairing nanocapsule can be rapidly released through the 3.5 nm aperture of the mesoporous SiO2 shell, glaze layer cracks are physically filled and react with CO2 in air to generate CaCO3 crystals, crack plugging is achieved, meanwhile, dynamic disulfide bonds of a PU layer are broken and recombined under stress stimulation, a crack interface is repaired through chemical bonding, and the performance of the core-shell self-repairing nanocapsule is improved. The 24-hour crack repair rate is greater than or equal to 96%, and the limitation of'one-time repair 'of a traditional material is solved.

The invention relates to the technical field of polyurethane impermeable materials, and particularly discloses a high-molecular impermeable material with oil resistance and impermeability as well as a preparation method and application thereof, and the high-molecular impermeable material comprises the following components in parts by weight: 120 parts of a polyurethane prepolymer, 20-45 parts of a diluent, 10-30 parts of an auxiliary agent, 15-20 parts of a micro-powder filler, 10-15 parts of carboxymethyl cellulose and 3-8 parts of dibasic hydrogen phosphate; wherein the polyurethane prepolymer is prepared from a diisocyanate compound and polyether polyol through a reaction; wherein the micro powder filler is a mixture of sodium acrylate hydrogel micro powder and sodium alginate hydrogel micro powder; wherein the dibasic hydrogen phosphate is monovalent ion salt. The high-molecular anti-seepage material has excellent anti-seepage performance in an oil storage environment, has relatively high adhesive force, and can be suitable for grouting in a humid environment; and water resistance and oil resistance of an underground water-sealed stone cavern oil depot environment can be better realized.

The invention discloses a saline-alkali soil improvement and disease resistance double-effect controlled release fertilizer and a preparation method thereof. The fertilizer comprises 18-22% of biochar, 12-18% of furfural residues, 8-12% of cow dung compost and 6-10% of potassium humate. 5-7% of aluminum sulfate, 4-6% of sulfur and 3-5% of zeolite; the microbial inoculum comprises the following components in percentage by weight: 1.5 to 2.5 percent of saline-alkaline bacillus, 0.8 to 1.2 percent of bacillus subtilis and 0.8 to 1.2 percent 8-12% of a sodium polyacrylate coating, 4-6% of a sulfur coating and 1-3% of polyglutamic acid; 0.8 to 1.2 percent of humic acid chelated iron, 0.8 to 1.2 percent of algal polysaccharide and 0.8 to 1.2 percent of urease inhibitor; 0.8 to 1.2 percent of zinc sulfate, 0.5 to 1.0 percent of manganese sulfate and 0.5 to 1.0 percent of borax. The fertilizer can reduce the pH and conductivity of soil, increase the organic matter content of the soil and effectively improve the physicochemical properties of the soil, meanwhile, by adding the microbial agent, the disease resistance of crops can be effectively improved, the morbidity and disease index of the crops can be reduced, and nutrient release of the fertilizer has a sustained and controlled release characteristic; the initial release rate and the cumulative release rate of nitrogen are both lower than those of common chemical fertilizers, and the cumulative release rate of nitrogen is moderate within 60 days, so that the nutrient requirements of crops in different growth stages can be met.

The invention discloses a multi-site intelligent response type CO2 gas channeling prevention gel and a preparation method, and belongs to the field of chemical oil displacement, and the preparation method comprises the following steps: taking a carbon dioxide response type monomer, acrylamide and sodium acrylate as monomers, and adopting water-soluble free radical polymerization to prepare a CO2 response type copolymer; the CO2 response type copolymer, a cross-linking agent, a stabilizer, a retarder and formation water are prepared into a polymer cross-linking agent mixed solution, a cross-linking reaction is carried out under the conditions of formation temperature and mineralization degree, and the multi-site intelligent response type CO2 gas channeling prevention gel is obtained. The gel effectively solves the problems that a traditional anti-channeling agent is poor in injectivity in a low-permeability and ultra-low-permeability oil reservoir and cannot achieve deep channeling sealing, CO2 gas channeling fractured channels can be effectively blocked, the carbon dioxide oil displacement effect is remarkably improved, and key technical support is provided for large-scale application of carbon dioxide displacement.

The invention relates to the technical field of functional coatings of medical instruments, in particular to a temperature-sensitive response type sodium polyacrylate catheter leakage-proof coating, a preparation method and application thereof, and the coating is of a three-layer composite structure. And the bottom bonding layer adopts a polydopamine modified silane coupling agent system, contains silver nanoparticles, has the thickness of 5-15 microns, and ensures strong bonding and antibiosis of the substrate. The middle functional layer is a three-dimensional cross-linking degree gradient interpenetrating network polymer, is composed of a plurality of monomers and nano materials, and is 50-100 [mu] m in thickness, the cross-linking degree of the middle functional layer is gradually increased from inside to outside, gradient transition of mechanical properties is achieved, the outer protective layer is composed of a copolymer, is 3-8 [mu] m in thickness, and provides excellent anti-fouling and biocompatibility. The coating is endowed with strong adhesive force, gradient mechanical property and surface stability, the sodium polyacrylate component absorbs water and expands in urine to form sealing, and the expansion degree of the sodium polyacrylate component is regulated and controlled by the pH value and ionic strength of the urine.

The invention discloses a relative permeability improver for efficient water control and oil increase and a preparation method thereof, belonging to the field of oil and gas field development. The relative permeability improver is a multi-component copolymerized polyacrylamide synthesized from acrylamide, sodium acrylate, 2-acrylamido-2-methylpropanesulfonic acid, a sulfonate ion-containing hydrophobic monomer, and a cationic adsorption monomer. The sulfonate ion-containing hydrophobic monomer and the cationic adsorption monomer are simultaneously introduced to cooperate with each other. Through the mutual synergy of the monomers, the water control and oil increase capability of the relative permeability improver in porous media is significantly improved, the flow resistance of the water phase in the porous medium is effectively increased, and the flow resistance of the oil phase can be further reduced due to the lubrication effect, thereby unexpectedly achieving an oil permeability effect, achieving an excellent water control and oil increase effect, and being able to have significant permeability selectivity under heterogeneous oil reservoir conditions. The invention provides key material support for the development of high-water-content oil and gas resources, ensuring the goal of efficient development of high-water-content oil and gas resources.

The present application relates to the field of fine chemical industry, and particularly to a preparation method of sodium tetrafluoroborate; the present application uses hydrofluoric acid, boric acid and soda to prepare sodium tetrafluoroborate; the present application uses evaporation, polar organic solvent dissolution, separation, modified polytetrafluoroethylene membrane fine filter filtration, cooling crystallization and the like to purify sodium tetrafluoroborate; the present application uses a polytetrafluoroethylene membrane filter core, vinyl guanidine, sodium acrylate, 1-allyl-3-ethyl imidazole tetrafluoroborate, an initiator and deionized water to prepare a modified polytetrafluoroethylene membrane filter core; the modified polytetrafluoroethylene membrane filter core prepared by the present application can effectively improve the purity of sodium tetrafluoroborate; the present application has the characteristics of low cost, simple process, low toxicity and environmental friendliness; the present application has mild reaction conditions in the preparation process, is easy to operate, has low energy consumption and high product purity.

The invention discloses a solid ultrasonic gel patch as well as a preparation method and application thereof, and belongs to the technical field of medical chemistry. The solid ultrasonic gel patch is prepared from an acrylamide monomer, polyvinyl alcohol, sodium polyacrylate, sodium carboxymethyl cellulose, nano silicon dioxide, propylene glycol, glycerol, acrylic acid, triethanolamine, a cross-linking agent, an initiator and water according to a specific ratio. The prepared solid ultrasonic gel patch is highly matched with human soft tissue in acoustic impedance (about 1.62-1.63 * 10 < 6 > Pa.s / m), low in acoustic attenuation coefficient (less than or equal to 0.034 dB / (cm.MHz)), moderate in skin adhesion, excellent in flexibility and moisture retention, capable of solving the problems that a traditional ultrasonic coupling agent is inconvenient to use, easy to dry, poor in experience and the like, and suitable for acoustic wave conduction in ultrasonic examination and treatment.

The invention discloses a collateral-dredging and pain-relieving gel plaster and a preparation method thereof. The collateral dredging and pain relieving ointment is prepared from the following raw materials in percentage by mass: camphor, borneol, menthol, absolute ethyl alcohol, collateral dredging and pain relieving volatile oil, a surfactant, collateral dredging and pain relieving extract, tartaric acid, purified water, partially neutralized sodium polyacrylate, a cross-linking agent, an adhesive, glycerol, EDTA-2Na (Ethylene Diamine Tetraacetic Acid) and a filling agent. The plaster disclosed by the invention is high in application comfort, breathable, free from aching feeling after being uncovered, free from residue on skin and not sticky when being in contact with sweat; the use of an organic solvent is basically avoided in the production process; the matrix contains components such as water and glycerol, has the effects of moistening the skin and promoting skin hydration, and is free of irritation and sensitization to the skin; repeated uncovering and pasting can be achieved, and the viscosity influence is small.

The invention relates to anti-abnormal-sound low-noise ABS (acrylonitrile butadiene styrene) and a preparation method thereof. The anti-abnormal-sound low-noise ABS is prepared from the following raw material components: ABS resin, modified ceramic hollow microspheres, modified polyacrylate and auxiliaries, wherein the modified ceramic hollow microspheres are polymers obtained by grafting hydroxylated ceramic hollow microspheres with KH-570 and then polymerizing the grafted hydroxylated ceramic hollow microspheres with sodium acrylate; the modified polyacrylate is obtained by polymerizing sodium acrylate, butadiene, styrene and tetradecyl acrylate. According to the invention, the ABS resin, the modified ceramic hollow microspheres and the modified polyacrylate are compounded; compared with the prior art, the composite material disclosed by the invention has the advantages of good compatibility among various components, high bonding strength, effective reduction of noise and abnormal sound, guarantee of the mechanical strength of the composite material, solving of the problems in the prior art, and good application prospect.

The invention relates to a bacteriostatic washing machine tank cleaning block composition and a preparation method thereof, and the bacteriostatic washing machine tank cleaning block composition comprises the following components: peroxide salt, a surfactant, a chelating agent, an acid substance, modified silicon dioxide, an active oxygen activator, a release agent, an adhesive, a filler and water; wherein the modified silicon dioxide is obtained by firstly hydroxylating silicon dioxide, then carrying out esterification reaction with hexadecenoic acid and linolenic acid, and finally polymerizing with sodium acrylate. The modified silicon dioxide can generate mechanical friction with stubborn dirt to promote the dirt to fall off, a high-crosslinking-degree net-shaped organic chain segment formed on the surface of the modified silicon dioxide has amphipathicity, after the modified silicon dioxide is compounded with the surfactant and other components, a synergistic effect is generated to improve the decontamination effect, the compatibility of all the components can be improved, and the cleaning effect is improved. Falling stubborn dirt can be wrapped, and the decontamination effect is further improved; all the components are compounded, so that a good antibacterial effect and the like are achieved, and a good prospect is achieved.

The invention provides a hydrogel fire extinguishing additive, a preparation method thereof and a fire extinguishing agent. The hydrogel fire extinguishing additive comprises the following raw materials in parts by mass: 1-3 parts of a gelatinizing agent, 1-4 parts of a thickening agent, 1-3 parts of a stabilizer, 2-5 parts of a cross-linking agent, 1-3 parts of a surfactant, 2-6 parts of a phosphorus flame retardant and 3-5 parts of an antifreeze agent. The gelatinizing agent is selected from one or more of methyl cellulose, hydroxypropyl methyl cellulose and hydroxyethyl cellulose; the thickening agent is selected from one or more of sodium carboxymethyl cellulose, konjac glucomannan, sodium alginate, sodium polyacrylate and xanthan gum; the cross-linking agent is selected from one or more of calcium chloride, magnesium sulfate, calcium sulfate, magnesium chloride, potassium chloride and sodium nitrate. The temperature and pH double-response hydrogel fire extinguishing agent provided by the invention has the characteristics of quick response capability, high-temperature stability, good environmental adaptability, safety and environmental protection, and can be well used for efficient extinguishing and continuous cooling control of a lithium ion battery fire.

The invention discloses an expandable rubber cable pipe plugging device and a preparation method thereof.The expandable rubber cable pipe plugging device is prepared from, by weight, 100 parts of EPDM rubber, 0.5-1.0 part of graphene, 0.2 part of silane coupling agent KH550, 10 parts of sodium carboxymethyl cellulose, 15 parts of sodium acrylate-acrylamide copolymer, 5 parts of polyvinyl alcohol, 8 parts of bentonite, 5 parts of expandable graphite and 3 parts of 4, 4 '-oxybisbenzenesulfonyl hydrazide foaming agent. The anti-aging coating is prepared from the following components in parts by weight: 1 part of zinc stearate, 2.5 parts of peroxide DCP, 2 parts of assistant crosslinker TAIC, 5 parts of zinc oxide, 1 part of stearic acid, 30 parts of fumed silica, 5 parts of modified nano montmorillonite, 20 parts of light calcium carbonate, 1.5 parts of anti-aging agent TMQ, 1 part of anti-aging agent 6PPD, 0.5 part of hindered phenol antioxidant 1076, 2 parts of UV absorbent UV-3292, 8 parts of naphthenic oil, 10 parts of microcapsules and 0.5 part of boron trifluoride diethyl etherate complex catalyst.

The invention relates to preparation of hydrolyzed keratin capable of maintaining hair and application of the hydrolyzed keratin in shampoo. The shampoo capable of maintaining the hair and the keratin is prepared by compounding a surfactant, a modified silicone oil graft polymer, the hydrolyzed keratin and polydimethylsiloxane. According to the modified silicone oil graft polymer, hydrophilic sodium acrylate and hydrophobic N-vinyl pyrrolidone and acrylic ester are introduced into vinyl silicone oil, and N-vinyl pyrrolidone and acrylic ester can be adsorbed on the inner side of the hair surface; sodium acrylate with hydrophilicity is located on the outer side of the surface of the hair due to electrostatic repulsion between the negatively-charged hair and generates hydration with water molecules on the surface of the hair to form a water shell protection layer, so that the sodium acrylate can be more uniformly distributed on the hair to form an effective protection film, and during washing, the water washing property is greatly enhanced by the hydrophilic part of the sodium acrylate; non-specific deposition and residues in a scalp area are remarkably reduced, and the washed hair can be moisturized and lubricated.

The invention relates to the field of water treatment agents, and discloses a composition with scale inhibition and corrosion inhibition functions, the composition comprises a first component, a second component, a third component, a fourth component and an optional Schiff base compound; the first component is selected from at least one of a C2-C6 alcohol amine compound, a C4-C8 cyclic amine compound, a nitrogen-containing heterocyclic compound and gluconate; the second component is selected from at least one of a benzotriazole compound, a benzothiazole compound and a thiourea compound; the third component is an inorganic metal salt; the fourth component is selected from at least one of a sodium acetate compound, sodium polyacrylate, sodium polymaleate and polyepoxysuccinic acid. The composition has relatively strong scale inhibition and scale dissolving effects on a high-hardness and high-alkalinity circulating water system, has long-term corrosion inhibition on metals, and reduces the water supplementing and changing times of the circulating water system.

The invention discloses a cosmetic composition and a preparation method and application thereof, the cosmetic composition comprises functional powder, polyol, water, an emollient, a thickening agent, a surfactant and an emulsifier, the thickening agent comprises xanthan gum, sodium polyacrylate and a sodium acrylate / sodium acryloyldimethyl taurate copolymer, and the emulsifier comprises sodium polyacrylate and sodium acryloyldimethyl taurate. The surfactant is prepared from sodium stearoyl glutamate and potassium cetyl phosphate, and the emulsifier is prepared from polyglycerol-2 dipolyhydroxystearate; the cosmetic composition disclosed by the invention can realize phase inversion in a use process (the cosmetic composition is initially in an oil-in-water type and can be converted into a water-in-oil type in a smearing process), has relatively good stability and a relatively good water-resistant effect, and can simultaneously meet a refreshing skin feeling and a makeup-holding and sweat-preventing function.

The invention provides a temperature-sensitive hydrogel fire extinguishing additive, a preparation method thereof and a fire extinguishing agent. The temperature-sensitive hydrogel fire extinguishing additive is prepared from the following raw materials in parts by mass: 1 to 3 parts of methyl cellulose, 2 to 6 parts of cross-linking agent, 2 to 12 parts of lubricant, 10 to 20 parts of metal salt, 1 to 3 parts of hydrocarbon surfactant, 3 to 6 parts of phosphorus flame retardant, 3 to 5 parts of cosolvent and 1 to 5 parts of heat stabilizer. The cross-linking agent is selected from one or more of sodium alginate, sodium polyacrylate, polyacrylamide, carrageenan, guar gum, xanthan gum, genipin, tannic acid and sodium carboxymethyl cellulose, and the lubricant is polyethylene glycol and / or polyvinyl alcohol. The temperature-sensitive hydrogel fire extinguishing additive disclosed by the invention is non-toxic, harmless, non-corrosive, environment-friendly, easy to degrade, easy to prepare and store, low in viscosity, high in critical transition temperature and high in gelling speed, and can extinguish a fire disaster of the lithium ion battery more quickly, avoid re-combustion of the lithium ion battery and realize continuous cooling of the battery at the same time.

The invention discloses an antibacterial coating for a concrete surface as well as a preparation method and application of the antibacterial coating, and relates to the technical field of functional polymers. The antibacterial coating for the concrete surface is prepared from the following raw materials in parts by weight: 100 parts of a monomer mixture, 0.7 to 3.1 parts of an initiator, 0.3 to 2.0 parts of a chain transfer agent and 75 to 125 parts of a solvent, wherein the monomer mixture comprises a methacrylate monomer, an acrylate monomer, sodium acrylate, a urea methacrylate monomer and a capsaicin derivative in a molar ratio of (12-60): (20-60): (2-10): (2-10): (1-5). The antibacterial coating for the concrete surface is easy to prepare and operate, low in cost and environmentally friendly, and raw materials are easy to obtain; the capsaicin derivative monomer is introduced into the antibacterial coating for the concrete surface, so that the antibacterial activity of the resin is improved, and the problem of biological fouling of a concrete structure in marine infrastructure is solved.

The invention relates to the field of preparation of calcium hydroxide, and particularly discloses a digestion preparation method of high-purity calcium hydroxide, which comprises the following steps: S1, preparing calcium oxide; s2, pretreatment; s3, pre-digestion: mixing the pretreated calcium oxide powder with deionized water, and reacting to obtain primary feed liquid; s4, deep digestion: supplementing deionized water into the primary feed liquid, and reacting to obtain secondary feed liquid; s5, impurity removal and purification: adding sodium polyacrylate and polyacrylamide into the secondary feed liquid, uniformly stirring, standing for 6-8 hours, and circularly filtering by adopting a membrane filtration system to obtain a third feed liquid; and S6, calcium hydroxide preparation: performing impurity removal, dehydration, drying and screening on the third-time feed liquid to obtain calcium hydroxide. According to the invention, process optimization is carried out on the basis of a lime digestion method, so that the purity of the prepared calcium hydroxide reaches 96% or above, and the calcium hydroxide can be used in the industrial fields with high purity requirements, such as heat stabilizers.

The invention discloses a cement mortar reinforcing agent and a preparation method thereof, relates to the field of cement mortar reinforcing agents, and is characterized in that the limit ranges of the DEAIPA dosage (15-20 parts), the titanate coupling agent hydrolysis time (3-5 hours) and the main mixing reaction temperature (60-70 DEG C) are controlled. A titanate coupling agent is hydrolyzed at specific pH and temperature until the conversion rate of-SiOR groups is high, sodium polyacrylate adsorbs sodium bicarbonate to form CO2-loaded microspheres, then the CO2-loaded microspheres are mixed and reacted with raw materials such as calcium formate and DEAIPA at limited temperature, and finally the reinforcing agent is prepared. Ten groups of contrast experiments are designed for verification: 1-5 groups are conventional groups with parameters within a limited range, 6-9 groups are control groups with parameters exceeding the range, and 10 groups are traditional raw material blank groups. Experiments show that the 3-day / 28-day compressive strength and the total shrinkage rate of a conventional group are remarkably superior to those of an out-of-range group and a blank group, a nonlinear relation exists in the synergistic effect of parameters, and it is proved that the limited range has practical significance for improving the mechanical property and the crack resistance of the low-clinker cement.

The invention discloses a moss-microorganism synergistic nitrogen fixation bionic regreening method and system for a drought-resistant mine rock slope, and belongs to the technical field of ecological environment restoration. The method comprises the following steps: (1) slope pretreatment: drilling anchoring holes; (2) layered construction: (1) a fixation layer: spraying mixed slurry prepared from amylase and plant fibers to form a net-shaped substrate with the thickness of 1-2cm; (2) a nutrient layer: spraying a mixture of a complex microbial inoculant and a slow release fertilizer, wherein the thickness is 4cm; the mixed bacterial agent is prepared from the following raw materials in percentage by weight: 60 percent of phytonimum patenum spores, 25 percent of nostoc commune (Nostoc commune) and 15 percent of pseudomonas fluorescens (Pseudomonas fluorescens), and the mixed bacterial agent is prepared from the following raw materials in percentage by weight: 60 percent of phytonimum patenum spores, 25 percent of nostoc commune (Nostoc commune) and 15 percent of pseudomonas fluorescens (Pseudomonas fluorescens). And (3) a water retention layer: sodium polyacrylate resin is spread, the particle size of the sodium polyacrylate resin is 1-0.5 mm, soil covering and compaction are performed until the thickness of the water retention layer is 1-1.5 cm, and the use amount of the sodium polyacrylate resin is 2-1.5 wt% of the weight of the soil. According to the method, the nitrogen fixation efficiency can be improved by 40-60%, and the soil moisture content is kept gt under the drought condition; the survival rate of the seedlings is increased to 85% or above, the anti-scouring capacity of the side slope is improved by 50%, and the vegetation coverage rate of 70% or above is achieved within 6 months.

The application relates to a preparation method of an iron-manganese composite-based porous polyurethane cement sponge filler, and belongs to the technical field of sponge fillers. The method solves the defects of the existing sulfur autotrophic denitrification technology. The required proportions of ordinary Portland cement, anhydrous manganese chloride (MnCl2) and ferrous chloride tetrahydrate (FeCl2.4H2O) are weighed, mixed and stirred uniformly, a water phase solution containing a bonding agent polyvinyl alcohol (PVA) and a dispersant sodium polyacrylate (SPAN) is prepared, solid raw materials and the water phase solution are mixed, polyurethane sponge is added into the mixture and stirred, freezing and shaping are carried out, freezing drying is carried out, steam curing is carried out, then, after being cooled to room temperature, the material is washed with deionized water, and finally, drying treatment is carried out. The iron-manganese composite-based porous polyurethane cement sponge filler has a large specific surface area, porosity, rough surface and good hydrophilicity, and has high phosphorus adsorption and sulfur fixation capacity, thereby exhibiting excellent environmental purification performance and excellent microbial adhesion.

The utility model discloses a fresh-keeping device for agricultural product transportation, and relates to the technical field of agricultural product transportation, the fresh-keeping device comprises a box body, a sealing cover, a phase change material layer, a humidity adjusting system, a buffer structure and an intelligent monitoring module, the box body is of a double-layer heat insulation structure, the outer layer is an EPS heat insulation layer, the inner layer is a PE layer, and the middle is filled with phase change materials; the humidity adjusting system comprises a water absorption pad located at the bottom of the box body and a breathable film located at the top of the sealing cover, the buffering structure is a supporting frame, and the surface of the buffering structure is covered with a nano-silver antibacterial coating. Through the cooperation of the double-layer heat insulation structure (EPS + PE) and the phase change material (the phase change temperature of 0-10 DEG C), the temperature in the box is kept stable in a passive mode, the respiration and microbial activity of agricultural products are inhibited, and compared with traditional normal-temperature packaging, the fresh-keeping period is prolonged by 30%-50% (for example, the fresh-keeping period of strawberries is prolonged from 3 days to 7 days). The water absorption pad (sodium polyacrylate) absorbs condensate water, redundant water vapor is discharged in combination with the BOPP anti-fog breathable film (the micropores are 0.1-1 micron), and the humidity is accurately controlled to be 85%-95%.

The invention relates to a scale inhibitor for an industrial circulating water system and an intelligent adding method thereof, and belongs to the technical field of industrial water treatment.The scale inhibitor is composed of a component A and a component B. The component A comprises, by mass, 5-15% of sodium molybdate, 5-15% of sodium tungstate, 15-25% of sodium polyacrylate, 5-15% of sodium borate, 15-25% of zinc sulfate, 5-10% of zinc chloride, 3-8% of sodium silicate and 2-6% of benzotriazole; the component B is prepared from the following components in percentage by mass: 15 to 25 percent of HEDP, 15 to 25 percent of PBTC, 35 to 50 percent of AA / AMPS copolymer and 15 to 25 percent of deionized water. According to the scale inhibitor for the industrial circulating water system and the intelligent adding method of the scale inhibitor, a phosphorus-free and chromium-free environment-friendly formula with sodium molybdate and sodium tungstate as cores is adopted, and phosphorus pollution and heavy metal risks are fundamentally eradicated; according to the formula, through cooperation of multiple components, a layer of compact and stable composite passivation film with self-repairing capacity can be formed on the metal surface in severe water with high chloride ions, and the corrosion inhibition rate gt of carbon steel is achieved; the copper corrosion inhibition rate is gt; and 98%.

The invention discloses a production process of a tumor swelling and pain relieving cataplasm patch, and belongs to the technical field of traditional Chinese medicine preparations. According to the process, rheum officinale, golden cypress, turmeric and tripterygium wilfordii stir-fried with vinegar are taken as monarch drugs and are matched with sculellaria barbata and oldenlandia diffusa to enhance the antitumor activity, pseudo-ginseng synergistically improves the transdermal efficiency, and the preparation is optimized through a segmented extraction and nano-targeting technology: 1) adopting supercritical COextraction to extract angelica dahurica and cinnamon volatile oil (20-25MPa and 40-50 DEG C), and carrying out beta-cyclodextrin inclusion; the preparation method comprises the following steps of (1) performing dynamic countercurrent extraction on non-volatile components (70% ethanol at a flow rate of 2.0 mL / min) of other medicinal materials, and coating triptolide (with a particle size of 80-150 nm) in combination with PLGA nanoparticles, and (3) mixing the extract and a composite matrix (sodium polyacrylate-sodium carboxymethyl cellulose-azone), and coating a pH response type chitosan-sodium alginate sustained release layer with the mixture to form the breathable patch.

The invention discloses a sodium polyacrylate and attapulgite dual-network hemostatic hydrogel and a preparation method thereof. The preparation method comprises the following steps: firstly, dispersing attapulgite in ethanol to form an attapulgite dispersion liquid; then modifying the surface of the attapulgite by utilizing a silane coupling agent; and dissolving a certain amount of surfactant, sodium acrylate and initiator, adding the modified attapulgite and cross-linking agent to obtain a water phase, slowly adding the oil phase material, and carrying out high-speed shearing and heating polymerization to obtain the double-network hydrogel with the hemostatic effect. Compared with a single-network hydrogel, the double-network hydrogel has the advantages that the strain linear viscoelastic area is wider, the deformation resistance is better, the hemostatic property and the mechanical strength are synchronously improved, and the organic-inorganic hybrid hydrogel has a good application prospect in the fields of hemostasis and wound healing and has a wide application prospect in the fields of hemostasis and wound healing. The device is especially suitable for acute wound hemostasis and medical scenes needing certain mechanical support, and has high practical application value.

The invention relates to the technical field of detergents, in particular to a dishwashing detergent for a descaling dishwasher and a preparation method of the dishwashing detergent, and the dishwashing detergent comprises non-fibrous components such as ethylene diamine tetraacetic acid, sodium hydroxide, sodium citrate, sodium polyacrylate, fatty alcohol-polyoxyethylene ether AEO-3 and the like. By optimizing the formula design, the problems of alkali scale and water scale residues are solved, phosphate is not contained, the efficient descaling capacity is achieved, and meanwhile the environmental protection performance is improved.

The invention discloses a polycarbonate composition as well as a preparation method and application thereof, and relates to the technical field of plastics. The polycarbonate composition provided by the invention comprises the following components in parts by weight: 44-85 parts of polycarbonate; 11 to 21 parts of surlyn resin A; 4 to 15 parts of surlyn resin B; 8 to 32 parts of glass fiber; 0.9 to 13 parts of a toughening agent; 4-11 parts of a flame retardant; the Surlyn resin A is an ethylene-(methyl) sodium acrylate ionic polymer, and the Surlyn resin B is an ethylene-(methyl) zinc acrylate ionic polymer. The polycarbonate composition provided by the invention has excellent weld line strength, flame retardant property and tensile strength.

The application provides an antimony-based composite negative electrode material and a preparation method and application thereof, and relates to the technical field of new energy batteries.The preparation method provided by the application comprises the following steps: mixing antimony metal powder with amorphous carbon, ball-milling, drying and calcining to obtain an antimony-based intermediate; performing acidification treatment on the surface of carbon nanotubes to obtain acidified carbon nanotubes, dispersing the acidified carbon nanotubes in an organic sodium modified solution, stirring, filtering, drying to obtain modified carbon nanotubes; mixing and dispersing the antimony-based intermediate, sodium polyacrylate and the modified carbon nanotubes to obtain a suspension, and then performing spray drying to obtain the antimony-based composite negative electrode material.The preparation method provided by the application can improve the problem of performance decline caused by the capacity attenuation of the antimony metal due to the huge volume expansion in the process of deintercalating sodium ions, and effectively improves the electrochemical performance of the antimony-based negative electrode material.