1145 results about "Magnesium chlorate" patented technology

A fireproof magnesium oxide board is prepared by mixing the following raw materials, the raw material names and weight parts are as follows: 80-100 parts of magnesium oxide; 20-30 parts of anhydrous magnesium chloride; 10-20 parts of modified expanded vermiculite foaming agent; 20-30 parts of aluminum silicate fiber; 5-10 parts of sawdust; 10-15 parts of fly ash; 8-12 parts of glass magnesium board crushed powder; 1.5-5 parts of non-woven fabric; 10-20 parts of water; wherein the modified expanded vermiculite is prepared by the following steps: (1) Vermiculite is incompletely expanded and calcined; (2) acrylic acid monomer, sodium hydroxide, acrylamide monomer, initiator potassium persulfate, crosslinking aid pentaerythritol polyglycidyl ether, incompletely expanded vermiculite, and water are taken, stirred evenly and ultrasonically dispersed to obtain a first reaction solution, which is placed in a reactor for reaction to obtain a gel material; (3) the gel material is preliminarily crushed and dried, and then further crushed in a ball mill to obtain a fire-resistant expanded vermiculite with water absorption performance.

The invention relates to a synthesis method of 1, 2-bis (4-vinyl phenyl) ethane, which comprises the following steps: 1) under the action of magnesium or zinc, carrying out self-coupling reaction on benzyl halide at a benzyl position to obtain 1, 2-bis (4-halogen phenyl) ethane, and 2) preparing the 1, 2-bis (4-vinyl phenyl) ethane from the 1, 2-bis (4-halogen phenyl) ethane, which is selected from any one of the following schemes: 2i: carrying out self-coupling reaction on the 1, 2-bis (4-vinyl phenyl) ethane obtained in the step 1) to obtain the 1, 2-bis (4-vinyl phenyl) ethane. The preparation method comprises the following steps: preparing a Grignard reagent from 1, 2-bis (4-halogen phenyl) ethane, and coupling the Grignard reagent with vinyl chloride to prepare 1, 2-bis (4-vinyl phenyl) ethane; and (2iii) coupling the 1, 2-bis (4-halogen phenyl) ethane obtained in the step (1) with vinyl magnesium chloride to prepare the 1, 2-bis (4-vinyl phenyl) ethane. According to the invention, the 1, 2-bis (4-vinyl phenyl) ethane is prepared from p-benzyl halide through two-step reaction at a relatively high yield, and the yield of the two-step reaction can reach 86.9%.

The invention discloses a preparation method of capillary crystalline self-repairing concrete, which comprises the following steps: adding zeolite powder into a urease solution for dipping treatment to obtain pretreated zeolite powder; adding the pretreated zeolite powder into a mixed solution A containing urea and sodium alginate, adding a calcium chloride solution A, and separating a solid phase to obtain coated zeolite powder; fumed silica is added into a magnesium chloride solution to be mixed, polyethylene glycol is added, ultrasonic dispersion is conducted, and dispersion liquid is obtained; mixing the coated zeolite powder with the dispersion liquid, adding a sodium alginate solution, mixing, adding a calcium chloride solution B, and separating a solid phase to obtain modified zeolite powder; mixing preparation raw materials including the modified zeolite powder, the cement, the fly ash, the polycarboxylic acid water reducing agent and the aggregate to obtain the concrete. The concrete prepared through the method is good in crack self-repairing effect and good in mechanical strength, and the durability and the service life of the concrete can be improved easily.

The invention belongs to the technical field of synthesis of magnesium hydroxide flame retardants, and provides a synthesis method and flame-retardant application of hexagonal flaky magnesium hydroxide, and the synthesis method comprises the following steps: step 1, dissolving a mineralizer, a crystal form control agent and magnesium chloride in water in proportion; step 2, putting a certain amount of the mixed solution into a high-pressure reaction kettle for hydrothermal reaction; step 3, after the reaction is finished, taking out the cooled solution from the high-pressure reaction kettle, and filtering and separating out a white product; 4, drying the sample, and grinding to obtain pure magnesium hydroxide powder; through reasonable process design and optimization, the prepared magnesium hydroxide not only has regular morphology and better dispersity, but also has excellent performance in the field of flame retardance of high polymer materials, meets the requirement of environmental protection, has the production advantages of low cost and high efficiency, and is suitable for industrial production. The method not only can effectively improve the overall utilization rate of salt lake resources, but also has remarkable economic and application values, and has wide industrial application prospects.

The invention relates to a design method for the mix proportion of carbonized 3D printing concrete and the carbonized 3D printing concrete. Carbon dioxide is introduced into cement-based printing slurry, the introduction amount of the carbon dioxide is controlled, and when the carbon dioxide is introduced into the cement-based printing slurry, the use amount of magnesium chloride is calculated according to the content of a carbonization reaction product CaCO3 and the proportion of calcite to aragonite in a required concrete mixture. Magnesium chloride and carbon dioxide are added into the cement-based printing slurry at the same time for full reaction, and finally the 3D printing concrete material is prepared. By adding magnesium chloride and generating aragonite type calcium carbonate, the thixotropic behavior of the material is improved, the constructability of the cement slurry is higher, the orientation of the nano-scale aragonite fibers is arranged according to the printing direction, the reinforcing and toughening effects are excellent, and the bending resistance, bending resistance and compressive strength are all improved.

The invention discloses a multi-dimensional rapid evaluation method for snow-melting agent corrosion resistance of stainless steel, and relates to the technical field of stainless steel performance evaluation.The multi-dimensional rapid evaluation method comprises the steps that sodium chloride, calcium chloride and magnesium chloride are weighed by mass and dissolved in deionized water, acetic acid and sodium hydrogen sulfite are added after dissolution, and the pH value is adjusted to 4-6; performing potentiodynamic polarization scanning and electrochemical impedance spectroscopy testing on the stainless steel sample to obtain pitting potential and impedance modulus; the method comprises the following steps: placing a stainless steel sample in a cyclic corrosion experiment box, carrying out a corrosion experiment under the conditions of controlling the cyclic temperature change of an environment temperature and periodically carrying out cyclic switching of a spraying mode, a humid mode and a drying mode, taking out the sample every set time, and measuring the corrosion rate and the maximum pitting depth; and according to the pitting potential, the impedance modulus, the corrosion rate and the maximum pitting depth, carrying out graded judgment on the corrosion resistance of the stainless steel. According to the method, the corrosion resistance of the stainless steel can be accurately evaluated in a short time.

The invention relates to the technical field of particle refining agents, in particular to a 7-series aluminum-zinc alloy particle refining agent which comprises the following raw materials in parts by weight: 35-45 parts of potassium chloride, 10-15 parts of calcium fluoride, 7-11 parts of a graphene modifier, 6-8 parts of a modifier based on modified sol and 5-8 parts of magnesium chloride. According to the particle refining agent, potassium chloride, calcium fluoride and magnesium chloride are adopted as a refining agent matrix, the graphene modifier and the modifier based on modified sol are added to be blended, coordinated and jointly synergized, the obtained refining agent product can optimize the hydrogen removal rate and the slag removal rate performance, meanwhile, the effect of improving the strength and the elongation performance of aluminum-zinc alloy is obvious, and the refining agent is suitable for industrial production. And the corrosion resistance and the heat-resistant stability of the product are optimized.

The invention relates to the technical field of agriculture, in particular to a plant nutrient solution for saline-alkali soil improvement and a preparation method thereof. The invention relates to a preparation method of a plant nutrient solution for improving saline-alkali soil. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides and acid modified calcium-based montmorillonite; preparing humic acid chelated calcium magnesium powder; preparing a binary compound; and preparing the plant nutrient solution. The preparation method comprises the following steps: preparing NO3-intercalated layered double hydroxides from calcium nitrate tetrahydrate and aluminum nitrate nonahydrate, carrying out acid modification on calcium-based montmorillonite by using dilute sulphuric acid, purifying humic acid, and mixing with calcium chloride and magnesium chloride hexahydrate to prepare humic acid chelated calcium magnesium powder. Finally, the three components are added into pig excrement fermentation liquor to prepare a plant nutrient solution, an adsorption-replacement-leaching closed loop can be formed, the desalination and alkali reduction efficiency is remarkably improved, the soil structure is improved, the effect of synergistically improving the saline-alkali soil is achieved, and therefore plant growth is promoted.

The invention provides a uniaxially stretched polyethylene composite film material as well as a preparation method and application thereof, and belongs to the technical field of film materials. According to the invention, through ultrasonic stripping, 3-aminopropyltriethoxysilane modification and N, N-dimethyl octadecyl ammonium chloride intercalation, the dispersibility and interfacial compatibility of montmorillonite are improved, and zinc oxide is introduced to endow antibacterial and ultraviolet shielding functions; maleic anhydride grafting enhances the interface bonding force; in metallocene polyethylene modification, through synergistic grafting of maleic anhydride and glycidyl methacrylate, a polar group is introduced, so that the compatibility of the metallocene polyethylene and a polar nano material is improved, and the flexibility and the processability are improved; magnesium chloride promotes grafting efficiency, and tributyl phosphate improves dispersibility and fluidity. The barrier property, the mechanical property and the processability of the composite material are enhanced through the synergistic effect, and the application requirement of a high-performance film is met.

The invention belongs to the technical field of building materials, and particularly relates to magnesium oxychloride cement mortar containing polyaluminum chloride water purifier waste residues as well as a preparation method and application of the magnesium oxychloride cement mortar. The magnesium oxychloride cement mortar containing the polyaluminum chloride water purifying agent waste residues is prepared from the following components in parts by mass: 45 to 55 parts of magnesium oxychloride cement and gypsum, 100 to 150 parts of the polyaluminum chloride water purifying agent waste residues, 0 to 3.6 parts of citric acid, 0 to 14 parts of styrene-acrylic emulsion, 130 to 170 parts of river sand and 160 to 200 parts of water, the magnesium oxychloride cement is prepared from 480 to 520 parts of magnesium oxide and 190 to 320 parts of magnesium chloride hexahydrate. The magnesium oxychloride cement mortar containing the polyaluminum chloride water purifying agent waste residues can be used as a cement-based pavement patching material, a large amount of polyaluminum chloride water purifying agent waste residues can be consumed, the problem of environmental pollution caused by the waste residues is effectively solved, the water resistance of the magnesium oxychloride cement mortar can be effectively improved, and efficient resource utilization of industrial solid waste is achieved.

The present invention provides a hemodialysis concentrate and a preparation method thereof, belonging to the technical field of pharmaceutical preparations, the hemodialysis concentrate includes liquid A and liquid B; liquid A includes sodium chloride, potassium chloride, magnesium chloride, calcium chloride and citric acid; liquid B includes sodium bicarbonate; the method for preparing liquid A is: sodium chloride, potassium chloride, calcium chloride and magnesium chloride are added to dialysis water, and the feed is fed once, stirred evenly and then filtered in a circulation manner; after the quality inspection is qualified, citric acid is added for secondary feeding, pH=1.5~1.7 is controlled, stirred and circulated, and liquid A is obtained after the citric acid is tested and qualified; the method for preparing liquid B is: sodium bicarbonate is added to dialysis water, stirred evenly and then filtered in a circulation manner, and liquid B is obtained after the quality inspection is qualified. The present invention uses citric acid as the acid solution of liquid A, adopts secondary feeding when preparing liquid A, adjusts the addition order of the liquid preparation raw materials, and controls the temperature and pH value, so as to prepare a hemodialysis concentrate with high stability and strong quality and safety.

The invention relates to the technical field of floating cables, and provides a waterproof corrosion-resistant floating cable which comprises a conductor, an insulating layer, a foaming layer and a sheath layer from inside to outside. The sheath layer comprises the following raw material components in parts by mass: 90-110 parts of a styrene-butadiene-styrene block copolymer, 60-80 parts of polypropylene, 80-90 parts of white oil, 15-25 parts of a filler, 2-3 parts of an antioxidant, 1-2 parts of a compatilizer and 1-3 parts of a dispersant; the filling agent is composite calcium carbonate; the preparation method of the composite calcium carbonate comprises the following steps: A1, adding calcium carbonate into an alkaline solution, and uniformly mixing to obtain a mixed solution; a2, adding magnesium chloride and aluminum chloride into water, and mixing to obtain a metal salt mixed solution; and A3, adding the metal salt mixed solution into the mixed solution, stirring, centrifuging, washing and drying to obtain the composite calcium carbonate. According to the technical scheme, the problem of poor acid corrosion resistance of the waterproof floating cable in the prior art is solved.

The invention discloses a preparation method of basic magnesium chloride, which comprises the following steps: dissolving magnesium chloride in water, heating to 50-95 DEG C, and stirring for 1-2 hours to obtain a colorless and transparent first solution; magnesium oxide is added into the first solution, alkali is added to adjust the pH to be 8-10, heat preservation is conducted, stirring continues for 1-4 h, and a second solution is obtained; pulping the second solution into a crystallization kettle, crystallizing, centrifuging, washing, drying a filter cake at 80-105 DEG C to obtain a white product basic magnesium chloride, and circulating mother liquor water for the synthesis reaction. The synthesis process provided by the invention is simple, high in product yield and yield and suitable for mass production, a common chemical synthesis kettle can meet production requirements, high-temperature and high-pressure procedures are avoided, and the production cost is reduced. The method is low in energy consumption, high in safety, free of wastewater and sewage discharge, green and environment-friendly.

The invention provides an efficient environment-friendly petroleum passivator as well as a preparation method and application thereof, and belongs to the technical field of passivators. The preparation method comprises the following steps: reacting bismuth nitrate with tetra (4-carboxyl phenyl) porphyrin and benzoic acid to prepare a carboxyl phenyl porphyrin bismuth-MOF material, reacting antimony nitrate with tetra (4-pyridyl) porphyrin and benzoic acid to prepare a pyridyl porphyrin antimony-MOF material, and performing sol-gel reaction on lanthanum isopropoxide and cerium isopropoxide to prepare lanthanum-cerium sol; the preparation method comprises the following steps: mixing calcium nitrate, magnesium chloride, organic acid, organic amine and hydrogen peroxide for reaction to prepare a calcium / magnesium organic matter, mixing the calcium / magnesium organic matter with other substances, adding the mixture into an acetonitrile / ethanol mixed solvent, and uniformly stirring and mixing to prepare the efficient environment-friendly petroleum passivator. The high-efficiency environment-friendly petroleum passivator prepared by the invention is green, safe, non-toxic and efficient, has better capturing and passivating effects on metal ions such as nickel and vanadium in the catalytic cracking reaction process of heavy oil, improves the activity of a catalyst, prolongs the service life of the catalyst, and thus, has a wide application prospect.

The invention discloses sodium titanate with a layered crystal structure, a preparation method of the sodium titanate and application of the sodium titanate in a water-based magnesium ion battery, and belongs to the technical field of water-based magnesium ion batteries. According to the invention, the sodium titanate with a layered crystal structure is used as the negative electrode material of the aqueous magnesium ion battery, and due to excellent chemical and structural stability, the sodium titanate can realize reversible Mg < 2 + > intercalation / deintercalation in an aqueous magnesium electrolyte. According to the invention, Na2Ti2O5 and Na2Ti3O7 materials are synthesized by a hydrothermal method and a high-temperature annealing process. In a magnesium chloride electrolyte, the two sodium titanate materials both show extremely low charge and discharge potentials (Na2Ti2O5,-1.3 to-0.6 V vs.SCE; sCE (-1.5 to-1 V vs.SCE) and relatively good cycling stability are achieved. In addition, the charge-discharge specific capacity of the Na2Ti2O5 half cell under the current density of 2A / g is up to 213mAh / g, and the high specific capacity of 150mAh / g is still kept under the high current density of 10A / g. The sodium titanate is an ideal aqueous magnesium battery negative electrode material, has the advantages of low cost and environmental friendliness, and has a great application prospect in the field of aqueous magnesium ion energy storage.

The invention provides anhydrous magnesium chloride and a preparation method thereof, and the preparation method comprises the following steps: mixing MgCl2. NH2O and ammonium chloride, carrying out ball milling, tabletting and granulating the mixed material, and heating and sintering the obtained flaky particles to obtain the anhydrous magnesium chloride, wherein n is an integer, and 0 < n < = 6. The water-containing magnesium chloride and the ammonium chloride can form an alternately coated sandwich structure through the pretreatment modes of ball milling and tabletting granulation, so that hydrogen chloride gas and ammonia gas generated during heating decomposition are diffused from the inside of the flaky particles to the outside, and meanwhile, the water-containing magnesium chloride in the particles can be fully exposed in a hydrogen chloride atmosphere; mgO generated in the sintering process is reduced; according to the tabletting and granulating method, large pores can exist among the flaky particles, generated water molecules can be taken away from a heating system from the pores existing among the flaky particles along with gas circulation in the heating and sintering process, and dehydration is better achieved. Meanwhile, the method is more beneficial to model selection of dehydration equipment.

The invention discloses a novel composite fog dispersal catalyst formula and a preparation method thereof, and belongs to the field of manual intervention weather catalyst manufacturing. The catalyst comprises a hygroscopic agent, which can be calcium chloride, magnesium chloride, sodium chloride, urea, calcium hydroxide or magnesium hydroxide; the carrier agent can be oxidized starch, bentonite, diatomite, a molecular sieve or cellulose; and the dispersing agent can be silicon dioxide, fatty alcohol-polyoxyethylene ether, polyethylene glycol, fatty glyceride or titanium dioxide. The prepared catalyst has good hygroscopicity and dispersibility, and when the catalyst is sown in dense fog, the dense fog can be rapidly dissipated. The raw materials have high water absorption characteristic and dispersity and can accelerate dissipation of warm dense fog and improve visibility, most of the carrier materials are non-toxic and harmless environment-friendly materials, the content of chloride ions and alkali metal ions in the composite catalyst is effectively reduced by controlling the proportion, the corrosion effect caused by various ions is reduced, and the requirement for environmental protection is met.

The invention provides a method for synthesizing high-valued amorphous calcium carbonate through carbon sequestration of carbide slag, and belongs to the technical field of carbon sequestration and high-valued utilization of industrial solid waste resources. The method comprises the following steps: carrying out active calcium extraction reaction on a dried and ball-milled carbide slag aqueous solution through ammonium chloride, stirring and filtering to obtain a calcium-containing solution; the method comprises the following steps: adding a certain amount of absolute ethyl alcohol and magnesium chloride into a calcium-containing solution, fully stirring, adjusting the pH value to a certain value, and introducing CO2 gas for mineralization reaction to obtain a turbid liquid containing calcium carbonate precipitate; and carrying out centrifugal separation, alcohol washing and drying on the turbid liquid to obtain powder calcium carbonate. According to the method disclosed by the invention, the calcium carbide slag active calcium liquid is extracted by adopting ammonium chloride, and absolute ethyl alcohol-magnesium chloride is added to precisely regulate and control the reaction steps of CO2 and the extracted calcium liquid, so that the CO2 is efficiently fixed, and meanwhile, mineralization is performed to obtain a mixed crystal type amorphous nano calcium carbonate product. According to the technology, double targets of synthesizing high-valued calcium carbonate through carbide slag carbon sequestration are achieved, and an innovative technical path is invented for current solid waste resource utilization.

The invention discloses a soil conditioner and a preparation method thereof, and relates to the field of soil conditioners, in particular to a soil conditioner and a preparation method thereof. The preparation method of the soda saline-alkali soil improver comprises the following steps: 1, taking fulvic acid, anhydrous calcium chloride, anhydrous magnesium chloride and anhydrous aluminum chloride for later use; 2, dissolving fulvic acid in a deionized water solution to prepare a fulvic acid solution, and then adding anhydrous calcium chloride, magnesium chloride and aluminum chloride into the fulvic acid solution; 3, uniformly stirring and mixing; 4, transferring the stirred mixed solution into a hydrothermal reaction kettle, and heating; 5, after the hydrothermal reaction is finished, cooling to room temperature, carrying out suction filtration, and drying filter residues at low temperature; and 6, grinding the dried filter residues to obtain the soda saline-alkali soil improver. The soda saline-alkali soil improver is an acidic Ca, Mg and Al hydrotalcite intercalation material; an anhydrous calcium sulfate phase and a compound (H3O) Al3 (SO4) 2 (OH) 6 phase containing aluminum and sulfate radicals are mainly used; the pH of the soda saline-alkali soil can be improved more quickly.

The invention relates to the technical field of trimethyl boron preparation, in particular to a high-purity trimethyl boron preparation method which comprises the following steps: S1, reaction raw material preparation: magnesium powder and methane chloride react to generate methylmagnesium chloride; reacting boron trifluoride with aluminum trichloride to generate boron trichloride; s2, taking methyl magnesium chloride and boron trichloride as raw materials, and carrying out dry reaction under the conditions that the pressure is 0-1.0 MPa and the temperature is 40-150 DEG C to generate crude trimethyl boron and magnesium chloride; s3, the crude trimethyl boron is subjected to condensation, adsorption and two-stage rectification in sequence, and a high-purity trimethyl boron product is obtained; and S4, magnesium chloride is electrolyzed to obtain magnesium powder and chlorine, and the magnesium powder and the chlorine are recycled. Compared with the prior art, the method has the advantages that the trimethyl boron is prepared by adopting the dry reaction, the reaction is more sufficient, the reaction efficiency is high, the crude trimethyl boron product is purified, the product purity is improved, in addition, the byproduct magnesium chloride can be recycled, and the resource waste is reduced.

The invention discloses a supported metallocene catalyst and a preparation method and application thereof, and belongs to olefin coordination polymerization catalysts. According to the invention, the carrier is dispersed in the inert organic solvent, the metallocene catalyst is synthesized in situ in the inert organic solvent carrier, the metallocene catalyst is loaded in situ, the carrier is contacted with the metallocene catalyst, and the metallocene catalyst is firmly loaded on the surface of the carrier; the method comprises the following steps: adding an alkyl (oxy) aluminum solution with a novel structure, which is produced by a contact reaction of an alkyl aluminum solution and a toluene aqueous solution, into a carrier which is silica gel, magnesium dichloride and the like or a mixture of silica gel, magnesium dichloride and the like in any proportion, and enabling the alkyl (oxy) aluminum solution with the novel structure to be in contact with an in-situ supported metallocene catalyst to obtain the efficient supported metallocene catalyst. The activity of the prepared catalyst is adjustable in the range of 7000-25000gPE / (gcat.2 h), the suitable polymerization temperature ranges from 20 DEG C to 200 DEG C, even if the polymerization temperature reaches up to 170 DEG C, the catalyst still has high activity, and the thermal stability of the catalyst is high.

The invention belongs to the technical field of chemical synthesis, and particularly relates to a preparation method of perfluorohexyl octane. The preparation method comprises the following steps: by taking perfluorohexyl ethyl iodide as a raw material, firstly carrying out Grignard reagent exchange with a reagent A, and then carrying out nucleophilic addition reaction with n-hexanal to obtain a compound III; carrying out esterification and substitution on the compound III to prepare a compound V, or carrying out an Apple substitution reaction to prepare the compound V; and carrying out reduction reaction on the compound V, rectifying and purifying to obtain a target product. The reagent A comprises an isopropyl magnesium chloride tetrahydrofuran solution, a methyl magnesium chloride tetrahydrofuran solution, a methyl magnesium bromide tetrahydrofuran solution, an ethyl magnesium chloride tetrahydrofuran solution, an ethyl magnesium bromide tetrahydrofuran solution and / or a phenyl magnesium bromide tetrahydrofuran solution. According to the method, the perfluorohexyl ethyl iodide and the n-hexanal are used as raw materials to prepare the perfluorohexyl octane, isomer impurities are fundamentally avoided, and the method has the advantages that purification is easy, the yield is high, the product purity is high, and industrial production is facilitated.

The invention provides a foam dust suppression material as well as a preparation method and application thereof. The foam dust suppression material comprises a foaming agent, a surfactant, a thickening agent, inorganic salt and a solvent; wherein the foaming agent comprises soybean protein isolate and / or collagen; the surfactant comprises an anionic surfactant and / or a nonionic surfactant; the inorganic salt comprises one or more of potassium sulfate, magnesium chloride, sodium sulfate and sodium chloride. According to the foam dust suppression material, specific components are adopted, all the components cooperate with one another, and the dust suppression material is high in foaming rate, good in stability, good in dust suppression effect, environmentally friendly, non-toxic to the human body, capable of protecting the health of workers and improving the comfort level of the working environment, low in cost and good in economic benefit and social benefit.

The invention discloses a high-bonding-strength magnesium adhesive as well as a preparation method and application thereof. The high-bonding-strength magnesium adhesive comprises the following components: 160-185 parts of light calcined magnesia, 40-54 parts of magnesium chloride, 36-46 parts of magnesium sulfate, 46-60 parts of water, 6-14 parts of soybean protein powder, 1-3 parts of a retarder, 2-6 parts of talcum powder, 3-5 parts of polyvinyl alcohol and 4-8 parts of a waterproof agent. The waterproof agent comprises sodium methylsilanolate and sodium silicate in a mass ratio of (2-5): 1. The soybean protein is used as the modifier and can be extracted with the magnesium adhesive to form a network interpenetrating structure, so that the number of structural voids and the flatness of the magnesium adhesive are improved, a flat and compact gel system is formed, and the bonding performance of the magnesium adhesive is effectively improved.

The invention provides a biological carbonized magnesium chloride cement residue soil brick and a preparation method thereof, and belongs to the technical field of building materials. The biological carbonized magnesium chloride cement muck brick is prepared from the following raw materials in parts by weight: 3 to 7 parts of muck, 0.6 to 3 parts of magnesium oxide, 0.02 to 0.1 part of magnesium chloride, 0.013 to 0.015 part of a retarder, 0.9 to 1.5 parts of a bacterial solution and 0.5 to 1.5 parts of a urea solution, the bacterial liquid comprises bacillus pasteurii. According to the invention, the muck is used as a main raw material, so that resource utilization of building wastes is realized; through the mutual cooperation of magnesium oxide, magnesium chloride, bacillus pasteurii and urea components and the synergistic effect of microbial mineralization (bio-carbonate) and magnesium chloride cement hydration (chemical gel), the limitation of a single curing technology on strength is broken through, and the compactness and compressive strength of the muck brick are improved.

The invention relates to the technical field of metallurgy, and provides a method and system for preparing a spongy TC4 alloy raw material, and the method comprises the following steps: heating and mechanically stirring titanium tetrachloride, aluminum trichloride and vanadium tetrachloride according to a component proportion required for preparing a TC4 alloy to form a uniform chloride mixture; the chloride mixture is subjected to a reduction distillation reaction in the presence of magnesium, and inert gas is continuously introduced in the reaction process for stirring; and after the reaction is completed, separating the byproduct magnesium chloride to obtain the spongy TC4 alloy raw material. According to the scheme, use of high-cost metal raw materials is avoided from the source, meanwhile, the complex steps of electrode preparation and repeated smelting are omitted through the one-step reduction distillation reaction, and energy consumption and time cost are greatly reduced.

The invention discloses a method for preparing calcium hydroxide with a high specific surface area by digesting calcium oxide, and relates to the technical field of preparation of calcium hydroxide with a high specific surface area. The method is characterized in that diethylene glycol / triethanolamine / magnesium chloride is adopted as a compound digestion aid through two processes of wet digestion and dry digestion; and calcium hydroxide with high specific surface area can be controllably prepared. The specific surface area of the calcium hydroxide prepared through wet digestion can reach 70 m < 2 >. G <-1 > or above, the specific surface area of the calcium hydroxide prepared through dry digestion is 45 m < 2 >. G <-1 > or above, the reaction activity of the calcium hydroxide is effectively improved, and the novel controllable method for preparing the calcium hydroxide with the high specific surface area is provided.

The invention relates to a liquid detergent composition comprising a first surfactant selected from fatty alcohol ether sulfates, a second surfactant selected from betaines, optionally at least one solvent selected from ethanol, propanol, isopropanol, ethylene glycol, butyl glycol, propylene glycol, polypropylene glycol, alcoholamine, monoethanolamine, glycerol and mixtures thereof, wherein the salt concentration in the composition is about 0.2 to about 10 wt.-% and wherein the salt is selected from the group consisting of sodium salts such as sodium chloride, sodium sulfate, sodium formate, sodium acetate or sodium propionate, potassium salts such as potassium chloride, potassium sulfate, potassium formate, potassium acetate or potassium propionate, magnesium salts such as magnesium chloride, magnesium sulfate, magnesium formate, magnesium acetate or magnesium propionate, and calcium salts such as calcium chloride, calcium sulfate, calcium formate, calcium acetate or calcium propionate, and mixtures thereof, and wherein the composition is a concentrate that can be diluted with water while maintaining or increasing the viscosity.The present invention further relates to the use of such a cleaning composition for cleaning hard surfaces, in particular dishes, and to a process for preparing a cleaning composition, the process comprising diluting the concentrated liquid cleaning composition with water.

A phase change material composition for latent heat storage is provided. The composition includes a eutectic mixture of two or more salt hydrates, and at least one salt additive each selected from a bromide salt and a bromide salt hydrate. The mixture of salt hydrates has a melting temperature above room temperature. The at least one salt additive decreases the melting temperature of the mixture and reduces a degree of supercooling of the mixture. The mixture of salt hydrates may be a mixture of calcium chloride hexahydrate and magnesium chloride hexahydrate. The salt additives may include both calcium bromide and magnesium bromide. The melting temperature of the phase change material composition may be in a range of approximately 15 to 25° C. A thermal energy storage system including the phase change material composition and a method of heat management in the thermal energy storage system are also provided.

The invention relates to the technical field of biological materials, in particular to a PDRN porous microsphere as well as a preparation method and application thereof. The PDRN porous microspheres are prepared from the following raw materials: PDRN, an oil phase matrix, a curing agent and metal salt, the curing agent is at least one of polyethylene glycol acrylate and polylysine; the metal salt is at least one of calcium chloride, zinc chloride, magnesium chloride and ferric chloride. The PDRN porous microsphere has the advantages of being controllable in size, excellent in disintegration resistance and excellent in swelling resistance, is high in moist heat sterilization tolerance and strength, can be used as a filling material for medical beauty or an ideal candidate material of a tissue engineering scaffold, and has potential application value.