124results about How to "Reduce add" patented technology

The utility model discloses a wet-process phosphoric acid purification and arsenic removal system, and relates to the technical field of wet-process phosphoric acid purification and impurity removal. The system comprises a phosphoric acid raw material tank, a Venturi jet reactor, a tubular washing absorber, a reaction washing curing tank and a hydrogen sulfide reactor which are sequentially connected, wherein the hydrogen sulfide reactor is also communicated with the Venturi jet reactor; the reaction washing and curing tank is communicated with an arsenic removal filtering assembly; and the arsenic removal filtering assembly is communicated with the phosphoric acid raw material tank. The problems that an existing arsenic removal system is large in sodium sulfide adding amount, hydrogen sulfide leakage is prone to occurring, the system is complex, and the arsenic index is difficult to control flexibly are solved.

The invention discloses a black box confrontation sample generation method for a speech recognition system. The method comprises the following steps: inputting an original speech sample and a target text into an integrated attack output initial momentum and an initial confrontation sample; finite difference gradient estimation is carried out every fixed times, a current dominant frame in a voice confrontation sample is determined firstly, then the initial probability of selection of each sampling value is given, the final probability of selection of each sampling value is calculated according to the probability of selection of the dominant frame, and then finite difference gradient estimation is carried out; obtaining a gradient estimation value to update the probability that the sampling value is selected; for other iterations, selecting part of frames in the voice confrontation sample according to the probability that the dominant frame is selected, and adding a disturbance value to the selected frame to form a disturbed voice confrontation sample; the method has the advantages that on the premise that the voice content is not seriously damaged, it can be guaranteed that the voice is recognized as the pre-designed malicious content, and the mobility, the concealment, the query efficiency and the attack success rate of resisting the sample attack are greatly improved.

The invention discloses a treatment process of photovoltaic cell production wastewater, and relates to the technical field of industrial wastewater treatment. Comprising the following steps: treating dilute acid and dilute alkali through a reclaimed water recovery membrane system to obtain first produced water and reclaimed water concentrated water; treating the concentrated acid wastewater and the reclaimed concentrated water through a fluorine-calcium crystallization system to obtain defluorinated concentrated water and calcium fluoride crystals; treating the RO concentrated water and the defluorinated concentrated water by a hardness removal recycling system to obtain hardness-removed concentrated water and second produced water; treating the concentrated alkali wastewater through an alkali recovery membrane system to obtain purified alkali and alkali-removed concentrated water; hardness-removed concentrated water and alkali-removed concentrated water are treated by a comprehensive physicochemical system, and then are sequentially treated by a high-power concentration membrane system and a zero-discharge crystallization system to obtain solid wastes. The photovoltaic cell production wastewater treatment process provided by the invention achieves an economical and feasible zero-emission solution.

The invention provides clarified defatted coconut milk, a preparation method thereof and application of the clarified defatted coconut milk in tea beverages. The preparation method of the degreased coconut milk comprises the following steps: S1, crushing and squeezing coconut meat to obtain coconut milk; s2, the coconut milk is filtered and centrifuged, a grease layer and an insoluble substance layer are removed, and degreased coconut milk is obtained; s3, sequentially adding pectinase and protease into the degreased coconut milk for enzymolysis, and filtering to obtain filtered pulp; and S4, adding a compound enzyme preparation into the filtered slurry, carrying out ultrasonic treatment, enzyme deactivation and filtration, centrifuging the filtrate, taking a clear juice layer, and filtering to obtain the clarified degreased coconut milk. According to the method, coconut pulp is taken from coconuts with proper fruit age and is juiced to prepare the coconut milk, and then proper filtration, clarification and centrifugal extraction conditions are combined, so that carbohydrates in the coconut milk can be better reserved, and substances such as protein and pectin in the coconut milk can be effectively removed or degraded, so that the degreased coconut milk becomes clear, and the quality of the coconut milk is improved. And turbidity or precipitation can be effectively avoided after the defatted coconut milk tea beverage is compounded.

The invention relates to the technical field of sewage treatment, and provides a treatment system for reconstituted tobacco wastewater, which comprises a sewage pretreatment unit, a fiber recovery unit and a fiber drying unit, the sewage pretreatment unit comprises a first water collecting tank, a second water collecting tank, a coarse screen and a fine screen; reconstituted tobacco wastewater is introduced into the first water collecting tank; the water inlet of the second water collecting tank is communicated with the water outlet of the first water collecting tank; the fiber recovery unit comprises a third water collecting tank, a recovery plate and a recovery box; the water inlet of the third water collecting tank is communicated with the water outlet of the second water collecting tank; the fiber drying unit comprises a sedimentation tank and a sludge treatment tank; a water inlet of the sedimentation tank is communicated with a water outlet of the third water collecting tank, and a sludge outlet of the sedimentation tank is connected with a sludge inlet of the sludge treatment tank. According to the method, the fibers can be effectively recycled, the chromaticity and COD of the wastewater are reduced, and the reconstituted tobacco wastewater treatment efficiency and effect are improved.

Rare earth iron nitrogen (R-Fe-N) magnetic powder is further compounded with ferrite magnetic powder, an elastic base material and a flame retardant are added to obtain a flame-retardant magnetic layer material, a wire core and the flame-retardant magnetic layer material are subjected to co-extrusion molding, and the wire is obtained through magnetization. And a wire preparation scheme with minimum addition of the flame retardant, highest magnetic attraction performance and optimal mechanical performance at present can be realized. The prepared wire rod has good flexibility and also has good tear resistance and tensile property, the excellent flame retardant property can still be kept under the condition that the adding amount of the flame retardant is reduced, and meanwhile the high magnetic attraction force of the wire rod is achieved.

The present invention provides a leaching method for sulfide minerals, which comprises: grinding the sulfide minerals for a second time, adding concentrated sulfuric acid during the second grinding for pre-activation, and obtaining a second-grinded material; adding the second-grinded material into a sulfuric acid solution for normal pressure leaching to obtain a normal pressure leaching slurry; wherein, at least one of stirring, introducing oxygen, and maintaining the normal pressure leaching temperature is performed during the normal pressure leaching process; filtering the normal pressure leaching slurry to obtain normal pressure leaching slag and normal pressure leaching liquid; slurrying the normal pressure leaching slag with sulfuric acid solution, and then performing pressure leaching, and performing at least one of introducing oxygen, adjusting the air pressure, and adjusting the initial temperature of the pressure leaching during the pressure leaching process, filtering after the reaction is complete, and obtaining a pressure leaching liquid and a pressure leaching slag. The method can improve the leaching rate of the target metal in the normal pressure leaching stage, reduce the processing amount of sulfide minerals in the pressure leaching stage, and reduce energy consumption, cost, and safety hazards.

The invention provides a segmented direct vat set chilli sauce composite leavening agent and a method for preparing chilli sauce by using the same, and belongs to the technical field of food fermentation. The composite leavening agent comprises a leavening agent 1 and a leavening agent 2, wherein the leavening agent 1 is prepared from freeze-dried powder of plant lactobacillus CICC 25125, freeze-dried powder of lactobacillus acidophilus CICC 6094 and freeze-dried powder of leuconostoc mesenteroides CICC 24385, and the leavening agent 2 is prepared from freeze-dried powder of saccharomyces cerevisiae, a fermentation accelerant and garlic essential oil. The composite leavening agent can effectively control the fermentation process, perform segmented intensified inoculation, increase the acid production rate, shorten the fermentation period and reduce the generation of nitrite in the fermentation process. The invention further provides a method for preparing the chilli sauce by using the composite leavening agent, and the prepared chilli sauce is low in nitrite content, presents soft and rich fruity flavor and is high in flavor.

The invention discloses a construction method and application of Kluyveromyces marxianus capable of producing succinic acid, and belongs to the technical field of biology. According to the invention, an ethanol metabolism pathway gene PDC1 is knocked out, succinic acid reduction synthesis pathway related genes are overexpressed in cells, the PDC1 gene is knocked out by adopting a CRISPR-Cas9 technology, overexpression of the pathway gene in the cells is realized by adopting an NHEJ technology, and an excellent strain for high yield of succinic acid is constructed. After the strain constructed by the invention is subjected to fed-batch fermentation culture in a 5L fermentation tank, the yield of succinic acid reaches 42.9 g / L, and the conversion rate reaches 0.37 g / g glucose. The strain constructed by the invention has a good application prospect in the fields of chemical engineering, degradable materials and food.

The invention discloses a preparation method of a cyclotriphosphazene Schiff base carboxylic acid rare earth complex and application of the cyclotriphosphazene Schiff base carboxylic acid rare earth complex in preparation of a flame-retardant high polymer material. The cyclotriphosphazene Schiff base carboxylic acid rare earth complex is prepared by reacting raw materials including p-hydroxybenzaldehyde, anhydrous potassium carbonate, phosphonitrilic chloride trimer, p-aminobenzoic acid and rare earth chloride heptahydrate. The cyclotriphosphazene Schiff base carboxylic acid rare earth complex prepared by the invention has the effects of catalyzing char formation and capturing free radicals based on the combined action of rare earth elements and phosphorus elements, has an efficient flame retardant effect, is small in addition amount, and can effectively reduce the total addition amount of the flame retardant when being compounded with other halogen-free flame retardants.

The utility model relates to the technical field of soil stabilizer preparation, and discloses a preparation device based on an environment-friendly soil stabilizer, which comprises a preparation tank, a tank cover is detachably arranged at the top end of the preparation tank, a motor is embedded and connected in the center of the upper surface of the tank cover, and the power output end of the motor penetrates through the tank cover and extends to the upper end of an inner cavity of the preparation tank. The power output end of the motor is detachably connected with a transmission rod, the transmission rod is vertically arranged in the center of an inner cavity of the preparation tank and extends to the bottom end of the inner cavity of the preparation tank, a filter plate is detachably arranged at the upper end of the inner cavity of the preparation tank, and the center of the filter plate is arranged on the surface of the upper end of the transmission rod through a nested shaft sleeve; during preparation, the solid solvent can be crushed, so that the solid solvent can be quickly dissolved in a solution and fully mixed, the waste of raw materials can be avoided, and the preparation efficiency and quality of a fixing agent are improved.

This invention discloses a medium carbon steel for steering screws in new energy vehicles and its production method. The chemical composition of the medium carbon steel, by mass percentage, is as follows: C: 0.45%~0.70%, Si: 0.25%~0.55%, Mn: 0.45%~1.05%, Cr: ≤0.40%, Mo≤0.40%, Ni≤0.40%, P≤0.035%, S: 0.015%~0.035%, O≤0.0012%, with the balance being Fe and unavoidable impurities. The production method includes a complete process: molten iron pretreatment – ​​converter smelting – LF refining – RH furnace vacuum degassing – continuous casting – rolling – quenching and tempering – finishing – sub-critical quenching – low-temperature tempering. By controlling the composition to reduce the addition of expensive alloying elements, and through a composite heat treatment of "quenching and tempering + sub-critical quenching + low-temperature tempering," a hardness gradient of ≥60HRC on the surface and 22~28HRC in the core is achieved, with no decarburized layer on the surface. Simultaneously, strict control of non-metallic inclusions enhances the purity of the steel. This invention's product is compatible with cyclone milling processes, exhibits minimal quenching deformation, and can be straightened, meeting the high precision and long service life requirements of steering screws in new energy vehicles.

The invention discloses a preparation method of a composite catalyst for synthesizing 1, 4-butynediol, and relates to the technical field of BDO synthesis, the preparation method comprises the following steps: preparing a solution A from active metal salts of copper and zirconium, preparing a solution B from active metal salts of copper, bismuth and magnesium, and dissolving a precipitator in deionized water to prepare a solution C; synchronously dropwise adding the solution A and the solution C into a buffer solution at a constant speed to form slurry D; then the solution B and the solution C are dropwise added into the slurry D synchronously at a constant speed to form slurry E, and the slurry E is continuously subjected to a reaction or a hydrothermal reaction; and aging, filtering, washing and drying after the reaction is completed to obtain the catalyst. The composite catalyst prepared by the method is large and uniform in particle size, is beneficial to solid-liquid separation, shows relatively high activity and selectivity, and is mainly applied to the field of catalytic reaction for preparing 1, 4-butynediol.

The application discloses a rice straw-based liquid mulch emulsion and a preparation method and application thereof. The preparation method comprises the following steps: adding pretreated rice straw into a sodium hydroxide solution for alkali treatment, so as to obtain rice straw fibers and a silicon-containing black liquor; washing and bleaching the rice straw fibers, so as to obtain bleached rice straw fibers; first standing the silicon-containing black liquor, then adjusting the pH value, and continuing to stand, so as to obtain a silicon-containing dispersion liquid; mixing the bleached rice straw fibers with an alkaline alcohol solution and activating, then adding chloroacetic acid for etherification reaction, so as to obtain carboxymethyl cellulose; mixing a polyvinyl alcohol solution and the carboxymethyl cellulose solution, and adding the silicon-containing dispersion liquid under stirring, and then supplementing water, so as to obtain the rice straw-based liquid mulch emulsion. The rice straw-based liquid mulch emulsion prepared by the application can be applied to the covering of cultivation soil, has the advantages of excellent film forming strength, toughness, light shielding and soil covering adaptability, and the like, and has the advantages of wide raw material sources, simple preparation process and suitability for large-scale popularization.

The invention relates to a low-foam cleaning agent with cleaning waste liquid capable of being recycled for cutting fluid and a preparation method and a use method thereof, and relates to the technical field of cleaning agents, the low-foam cleaning agent with cleaning waste liquid capable of being recycled for cutting fluid comprises the following raw materials by weight: 2-10% of a silicon-containing low-foam surfactant, 5-15% of alkyl alcohol amine, 5-10% of a surfactant, 5-10% of a surfactant, and the balance of water. The cutting fluid comprises the following components in percentage by weight: 2%-10% of a tricarboxylic acid antirust agent, 1%-5% of hydroxyl organic acid, 0.1%-1.0% of benzotriazole, 1%-5% of short-chain fatty acid, 1%-8% of boric acid, 0.1%-0.5% of dodecyl dimethyl ammonium chloride and the balance of water. The cleaning agent provided by the invention is especially low in foam, strong in cleaning force and free from any corrosion to cast iron, carbon steel and aluminum alloy, waste liquid after cleaning can be directly discharged into a cutting fluid groove in a machine tool, the use of cutting fluid is not influenced, zero wastewater discharge of the cleaning agent is realized, the cleaning agent is more environment-friendly, and the defects of the existing cleaning agent are overcome.

The invention discloses a cool regenerated colored polyamide fiber and a preparation method thereof, and belongs to the technical field of chemical fiber preparation. The preparation method comprises the following steps: firstly, melting and spinning cool master batch, regenerated chinlon chips and other raw materials to prepare cool regenerated chinlon POY (Polyester Pre-Oriented Yarn) fibers; meanwhile, melt spinning is conducted on the color master batch, the regenerated chinlon slices and other raw materials, and stock solution coloring regenerated chinlon POY fibers are prepared; and finally, stranding the two functional POY fibers through a false twist texturing process to prepare the cool regenerated colored chinlon DTY fiber. By means of the step-by-step spinning and plying elasticizing integrated technology, the cool feeling, coloring and regeneration environment-friendly characteristics are combined in the fiber manufacturing stage, and the final product has the comprehensive advantages of being excellent in cool feeling durability, high in color fastness, simplified in production technology and environmentally friendly.

The present invention belongs to the technical field of chemical detection, and discloses a method for determining the content of ethylene glycol and diethylene glycol in laundry beads by gas chromatography. The detection method of the present invention comprises the following steps: weighing the laundry beads, dissolving them in methanol after crushing, fixing the volume, and then ultrasonically extracting, centrifuging, filtering, and diluting to obtain a sample solution to be tested; subjecting the sample solution to be tested to gas chromatography-mass spectrometry detection to determine whether it contains ethylene glycol and diethylene glycol; conducting gas chromatography detection to obtain the area of ​​the chromatographic peaks of ethylene glycol and diethylene glycol, bringing them into the standard working curve, and obtaining the concentration of ethylene glycol and diethylene glycol, and calculating the content of ethylene glycol and diethylene glycol in the laundry beads. The present invention can accurately measure the content of ethylene glycol and diethylene glycol components, promote a more standardized market for laundry beads products, reduce the addition of components toxic to the human body, such as ethylene glycol and diethylene glycol, in production, and better protect the rights and interests of consumers.

The invention relates to the field of frozen drinks, in particular to fresh milk ice cream and a preparation method thereof. The invention discloses a fresh milk ice cream which comprises the following raw material components in parts by weight: 4.5-6 parts of white granulated sugar, 4-6 parts of whole milk powder, 10-18 parts of single cream, 5-6.5 parts of maltitol, 4.5-6 parts of polydextrose, 1.5-3 parts of inulin, 0.3-0.6 part of a compound emulsifying thickener and 60-65 parts of fresh milk. On the basis of an existing cane sugar ice cream formula, 50% or more of cane sugar is reduced, the melting resistance of the ice cream is improved, the appearance quality of the ice cream in the transportation and storage process is facilitated, and on the basis that the smooth taste and pure flavor of the ice cream are reserved, the claim of high dietary fiber food in the national standard is met; and the healthy diet requirement of reducing sugar intake is met.

The present invention discloses a one-step method for directly synthesizing N-acyl amino acid compounds based on deep eutectic solution and using a deep eutectic solvent as a medium. The preparation method of the deep eutectic solvent provided by the present invention uses an amino acid surfactant to produce a substrate as a component, reduces the addition of additional compounds in the reaction system, reduces production costs, and simplifies the post-processing impurity removal process. The deep eutectic solvent used therein has the advantages of maintaining enzymatic properties and good substrate solubility, and can be used to catalyze the esterification reaction of fatty acids and amino acids to prepare N-acyl amino acid compounds. The preparation method of N-acyl amino acid compounds provided by the present invention has a simple preparation process, low production cost, and is green and safe.

The invention discloses a fire-resistant flame-retardant coating, a cable wrapping tape and a preparation method thereof, and the preparation method comprises the following steps: carrying out oxygen plasma bombardment treatment on fire-resistant particles to obtain surface hydroxylated fire-resistant particles; dispersing the surface hydroxylated fire-resistant particles and carboxylated nanocellulose in a dispersion liquid according to a mass ratio of (5-15): 1 to obtain a cellulose-coated fire-resistant particle buffer solution; 26-38 parts of a buffer solution, 40-50 parts of water, 18-25 parts of ammonium polyphosphate, 12-18 parts of a charring agent, 5-8 parts of a nitrogen flame retardant, 18-25 parts of an AVE emulsion and 0.4-0.8 part of a defoaming agent are fully and uniformly mixed, and the water-soluble fireproof flame-retardant coating is obtained. A phosphorus-nitrogen flame retardant is compounded with a carbon forming agent to form a carbon shell after combustion, optimized and dispersed fire-resistant particles are uniformly inserted into the carbon shell by virtue of the expansion effect of the carbon forming agent to form fire-resistant particle aerogel, a cross-interpenetrating network structure of the fire-resistant particle aerogel and the carbon shell is formed, and a cross-interpenetrating flame-retardant layer which is flame-retardant, heat-insulating and fire-resistant is formed after a surface coating is combusted; and a stable environment is provided for normal operation of the cable.

The invention discloses a genetic transformation method of taro, and belongs to the field of biotechnology. The genetic transformation method comprises the following steps: using the apical bud or axillary bud of taro as an explant to induce callus tissue to obtain a seedling; cutting off the stem segment or leaf of the seedling as an explant, and pre-culturing on a pre-culture medium; transferring to an Agrobacterium infection solution containing AS components for incubation to obtain an infected explant; transferring to a co-culture medium for co-culture; washing the explant obtained by the co-culture, transferring to a resistance dedifferentiation medium for subculture, and obtaining a resistant callus; placing the resistant callus on a recovery medium for subculture, and transferring to a differentiation medium containing activated carbon for culture to obtain a clustered bud; the clustered bud is rooted, hardened, transplanted and PCR identified to obtain a positive transgenic taro seedling. The genetic transformation method of the invention lays a foundation for establishing a stable and efficient taro genetic transformation system.

The invention provides a fresh-keeping and anti-corrosion method for low-alcohol grape wine, which comprises the following steps: screening and treating raw materials: transporting picked grape fruits to a brewing workshop within 2 hours, and then screening and cleaning; performing low-temperature fermentation: crushing the cleaned grapes, adding yeast, and performing fermentation under the condition of 15-20 DEG C; filtering and clarifying: after fermentation is finished, filtering the grape wine to remove residues and impurities generated in the fermentation process, and clarifying the filtered grape wine; sterile filling: filling the clarified grape wine in a sterile environment; micro-aerobic treatment: after filling the grape wine, carrying out micro-aerobic treatment; and low-temperature storage: storing the filled grape wine in an environment of 10-15 DEG C. The method provided by the invention effectively inhibits the growth and reproduction of microorganisms and reduces the oxidation of the wine, thereby prolonging the shelf life of the wine.

The invention discloses a method for treating radioactive waste through plasma, and belongs to the technical field of nuclear waste treatment. The method comprises the following steps: taking glass fibers, boron-containing concentrated solution evaporated salt and a glass additive as raw materials, and adjusting the chemical composition of the raw materials to obtain an adjusted waste material containing boron oxide, calcium oxide, aluminum oxide, sodium oxide and silicon dioxide; and carrying out plasma melting and curing treatment on the waste material subjected to chemical composition adjustment. According to the method for treating the radioactive waste through the plasma, the plasma high-temperature melting technology is adopted, the glass fiber, the boron-containing concentrated solution evaporation-dried salt and the glass additive serve as raw materials, and the chemical composition of the raw materials is adjusted, so that the melting temperature of the plasma high-temperature melting technology is reduced, the temperature of glass melt is reduced, and discharging is convenient; and the treatment of the glass fiber and the boron-containing concentrated solution can be realized, so that the volume of the glass fiber and the boron-containing concentrated solution can be reduced to the maximum extent, the addition of glass raw materials can be reduced, and the recycling and minimum treatment of radioactive wastes can be realized.

The invention discloses a method for producing a butanol system through fungus-bacterium co-culture fermentation alkali pretreatment of rice straw, and belongs to the technical field of microbial fermentation production of clean energy. The problem that a large number of cellulase preparations need to be used in the butanol fermentation process of existing lignocellulose biomass is solved. The method comprises the following steps: 1, pre-culturing clostridium beijerinckii in a reinforced clostridium culture medium; 2, culturing trichoderma reesei in potato dextrose agar, collecting spores, and inoculating the spores into a spore culture medium for culturing; and 3, inoculating the trichoderma reesei inoculum into a co-culture medium taking straws as a carbon source for culture, and then inoculating the clostridium beijerinckii inoculum. The method is used for a system for producing butanol by pretreating rice straws through fungus-bacterium co-culture fermentation alkali.

The invention belongs to the technical field of biological fermentation and single-cell protein production, and particularly relates to a method for preparing a single-cell protein feed through compound strain liquid-solid combined fermentation. The method comprises the following steps: S1, liquid fermentation: respectively preparing a neurospora crassa fermentation broth, a monascus fermentation broth, a bacillus fermentation broth, a candida utilis fermentation broth and a lactic acid bacteria fermentation broth; s2, solid-state fermentation: fully mixing the prepared fermentation liquor, and then adding the mixture into a solid-state fermentation culture medium for solid-state fermentation to obtain a material; and S3, bagging the material obtained in the step S2, sealing, stacking, and carrying out anaerobic fermentation to obtain the single-cell protein feed. According to the invention, a compound strain is adopted for fermentation, full utilization of a solid-state fermentation substrate can be promoted while a large number of thalli are obtained through liquid-state fermentation, the abundance of mycoprotein can be increased through coordinated fermentation, the content of restrictive amino acids in livestock and poultry can be increased, and the nutritional value of the mycoprotein can be further increased.

This invention relates to the field of carbon material preparation technology, specifically disclosing a method for preparing porous carbon materials using a hierarchical synergistic activation method and its application. This method uses waste biomass from *Siraitia grosvenorii* pomace as raw material, sequentially undergoing low-temperature pre-activation, water washing, high-temperature synergistic activation, and isothermal acid washing to obtain porous carbon materials with ultra-high specific surface area. Scanning electron microscopy analysis and pore structure detection results show that the carbon material exhibits a hierarchical porous layered structure. Electrochemical tests show that the material possesses excellent capacitance performance, with a specific capacitance reaching 200-450 F / g at a current density of 0.5 A / g. When this porous carbon material is assembled into a symmetrical supercapacitor, after 10,000 cycles at a current density of 10 A / g, the specific capacitance retention rate remains above 90%, demonstrating good cycle stability and showing promising application prospects in the field of energy storage.

The invention provides a silicon-based modified organophosphorus functional monomer and a method for preparing a bulk flame-retardant copolymer by using the same, and relates to the field of fireproof coatings. The silicon-based modified organophosphorus functional monomer is prepared from PAM100 and KH560 through a polymerization reaction, and the silicon-based modified organophosphorus functional monomer, an olefinic bond-containing monomer, a cross-linking material, an emulsifier, a PH buffer agent, an initiator and other raw materials can be used for preparing the bulk flame-retardant copolymer. According to the invention, the defects in the prior art are overcome, a core-shell emulsion polymerization mode is adopted, and the main silicon-based modified phosphate monomer and the monomer with carboxyl are used for preparing the shell layer, so that a better protection effect is formed on the surface of a polymer film through phosphorus, nitrogen and silicon, and the flame-retardant characteristic is achieved.

The present application relates to a kind of high flame-retardant low-toxicity environmental protection computer cable and its preparation method, belong to computer cable technical field.The insulating layer and / or sheath layer of the cable uses environmental protection toughening flame-retardant composite material, it is with polyolefin resin as matrix, compound modified nano-aluminum hydroxide with KH560 silane coupling agent, melamine cyanurate, gradient compound ethylene-vinyl acetate copolymer and maleic anhydride graft polyolefin, by limiting core component ratio and key parameter, realize high flame-retardant, low-toxicity environmental protection and low-temperature toughness Synergistic unity.The present application process is simple and easy industrialization, applicable to computer room, automation control system, instrument signal transmission and other scenes, practicality is strong.

The application discloses a kind of preparation methods of flame-retardant aging-resistant high-transparency polyurethane, the polyurethane is first with 2-amino-1,3-propanediol, 2-chloro-4,6-diphenyl-1,3,5-triazine, diphenyl phosphorochloridate and triphenylchlorosilane composite preparation DADT, then DADT is mixed with polyether polyol, isocyanate to obtain;The preparation method of the application is simple, the process is easy to control, the obtained polyurethane material limit oxygen index reaches 29.6%, meets commercial flame-retardant standard and reaches UL-94 V-0 flame-retardant grade;Material has excellent aging resistance, heat-oxygen tensile strength retention rate is 88.5%, heat-oxygen breaking elongation retention rate is 77.4%, and ultraviolet breaking elongation retention rate is 71.4%, can be applied to automobile ultraviolet protection diaphragm, flame-retardant filled foam, fire guide sign protection film and the like scene.

The utility model relates to lithium sink mother liquor recycling technical field, specifically disclose a lithium sink mother liquor recycling system, including the lithium sink mother liquor storage tank, neutralization device, filtering equipment, evaporator and centrifugal device connected in proper order through pipeline, the solid phase recovery device is connected to the solid phase outlet of centrifugal device, and the liquid phase recovery device is connected to the liquid phase outlet of centrifugal device, and the neutralization device includes neutralization jar, and the top of neutralization jar is provided with primary lithium sink mother liquor feeding port and sulfuric acid feeding port, and the sulfuric acid feeding port is connected with sulfuric acid storage tank through sulfuric acid pump, and the bottom of primary lithium sink mother liquor feeding port is connected with first spiral dispersion feeding pipe, and the bottom of sulfuric acid feeding port is connected with second spiral dispersion feeding pipe, and the pH monitor is arranged in neutralization jar, and the outside of neutralization jar is provided with temperature control jacket, and the circulating cooling water is circulated in temperature control jacket. The system can reduce the addition of auxiliary materials, reduce energy consumption, improve the resource utilization rate and economic benefit of lithium carbonate production.