191 results about "Hygroscopicities" patented technology

The invention discloses a preparation process of a composite rotating wheel for adsorption and dehumidification in a low-dew-point environment, which comprises the following steps: adding metal salt into a solution of a mixed organic ligand, adding an organic solvent, mixing with water, completely dissolving, carrying out solvothermal reaction, cooling to remove unreacted monomers and impurities, cleaning, and drying to obtain an MIL-101 (Cr) precursor adsorption material; the method comprises the following steps: dipping an adsorption material in different hygroscopic salt solutions to obtain a modified adsorption material; carrying out activating treatment; preparing the activated MIL-101 (Cr) adsorption material into slurry, coating the surface of glass fiber paper with the slurry, drying the glass fiber paper, and feeding the glass fiber paper into a rotating wheel; according to the present invention, the regular pore channel of MIL-101 (Cr) is adopted as the carrier so as to uniformly disperse the hygroscopic salt, such that the capture efficiency of the water molecules under the low humidity is enhanced, and the equilibrium adsorption capacity and the adsorption dynamic performance of the material under the low dew point environment are significantly improved;

The invention relates to the technical field of humidity control materials, in particular to a UV curing humidity control material and a preparation method thereof. The UV curing humidity control material comprises the following raw materials: UV resin, a reactive diluent, a photoinitiator and a humidity control additive, and the humidity control additive comprises one or more of hygroscopic salt, polysaccharide derivatives and polyhydric alcohols. The UV curing humidity control material provided by the invention adopts a substrate-free photocuring polyurethane system, on the basis of retaining an excellent humidity control effect, the UV curing humidity control material also adapts to the installation requirement of a narrow space in the camera, realizes rapid and convenient assembly, can be customized as required according to the specific size of the camera, and has good application flexibility; and meanwhile, the adhesive has the advantages of high curing speed and high production efficiency, and can still keep stable and excellent adhesive property after long-period aging, so that the long-term use reliability of the product is guaranteed.

The invention belongs to the field of functional polymer materials, and particularly relates to a temperature-sensitive core-shell moisture absorption microsphere based on a biomass source and a preparation method. The preparation method comprises the following steps: dissolving methyl cellulose in water to prepare a solution A; dissolving calcium lactate and LiCl in water according to a mass ratio of 1: (2-14) to prepare a solution B; uniformly mixing the two to obtain functionalized core liquid; and dropwise adding the core liquid into a sodium alginate coagulating bath to carry out ionic cross-linking reaction to form gel microspheres, and washing and freeze-drying to obtain the product. According to the invention, a stable structure with moisture absorption salt / temperature-sensitive methyl cellulose as a core and calcium alginate gel as a shell is constructed in one step through a reverse instillation molding technology. The structure can effectively prevent moisture absorption salt from leaking, efficient release of moisture can be achieved at the low temperature by means of the temperature-sensitive characteristic of methyl cellulose, and desorption energy consumption for taking water from air is remarkably reduced. The raw materials are green, the process is simple, and the prepared microspheres are good in moisture absorption performance, high in cycling stability and suitable for atmospheric moisture collection.

The invention discloses a film-forming composition and a preparation method thereof, a film-forming agent, application and cosmetics, and belongs to the technical field of cosmetic film-forming agents, the film-forming composition comprises the following components by mass: 7-30% of povidone, 10-24% of polyesteride-5, 0.1-2% of hydroxypropyl starch and the balance of water. The hydroxypropyl starch with the degree of substitution (DS) of 0.12-0.16 is matched with polyesteride-5 and povidone, so that the problems of high brittleness, easiness in tightening and high hygroscopicity when povidone is independently formed into a film are solved, and the mechanical property of the formed film is improved. The prepared film-forming agent keeps the characteristics of freshness and non-stickiness while providing strong makeup fixing power, reduces the skin tension, and meets various requirements of consumers on makeup fixing spray and liquid foundation.

The invention relates to the technical field of drying agents, in particular to a porous composite gel drying agent and a preparation method thereof. Conventional desiccants are difficult to give consideration to both stable chemical properties and high moisture absorption capacity. In order to solve the problems, the porous composite gel drying agent is provided, lithium chloride, calcium chloride and other hygroscopic salts are introduced to serve as additives in a porous polymerization network of the drying agent and are compounded with the polymer network, and the intrinsic moisture absorption capacity of the material is remarkably improved. The moisture absorption capacity of the obtained porous composite gel drying agent is far higher than that of traditional silica gel, the long-acting moisture absorption requirement in the high-humidity environment can be met, and the porous composite gel drying agent is particularly suitable for the high-end fields of precision electronics, new energy batteries, biological agents and the like with strict requirements for humidity control precision.

The invention relates to the technical field of adsorption materials, and discloses a wide-humidity-range moisture absorption aluminum-based MOF material and a preparation method thereof.The preparation method of the wide-humidity-range moisture absorption aluminum-based MOF material comprises the steps that S1, ligand pretreatment is conducted; s2, preparing a metal source; s3, mixing the ligand solution and the metal salt solution, uniformly stirring, transferring into a reaction kettle, and naturally cooling to room temperature after the reaction is completed; s4, centrifuging or filtering and separating the product obtained in S3 to obtain a solid product, washing with deionized water and an organic solvent, and drying to obtain an aluminum-based MOF material; and S5, the aluminum-based MOF material obtained in the step S4 is subjected to surface modification treatment, and the moisture absorption aluminum-based MOF material with the wide humidity range can be obtained. The moisture absorption aluminum-based MOF material with the wide humidity range is an MOF material with the wide humidity range and efficient moisture absorption performance, and has good application prospects in the fields of air dehumidification, water resource collection, industrial gas purification and the like.

This invention provides a phosphorus-containing flame retardant, its preparation method and application, and a resin composition and its application, specifically relating to the field of polymer materials technology. The phosphorus-containing flame retardant provided by this invention achieves an integrated design of the flame-retardant unit and the elastic matrix at the molecular scale by directionally and controllably grafting phosphorus-containing groups M onto the active sites of the polybutadiene soft segments in a styrene-butadiene-styrene block copolymer via covalent bonds. This structure retains the inherent high flexibility, impact resistance, and processing rheological properties of the styrene-butadiene-styrene block copolymer while imparting intrinsic, durable, and uniformly distributed flame-retardant capabilities to the material. Simultaneously, because the phosphorus element is anchored to the polymer backbone / side chain, no small molecule polar impurities are introduced, significantly suppressing dielectric polarization loss and hygroscopicity increases. This provides a structural basis and performance guarantee for the subsequent construction of a high-end thermosetting resin system for copper-clad laminates with low Dk / Df, high Tg, and low CTE.

A composition for a anticaking coating additive, which comprises: derivatized carbohydrates like alkyl derivatized polyglycosides, glycolipids, glycerol glycolipids, sphingo glycolipids, sulfolipids, phospholipids, glucosides, rhamnolipids, sophrolipids, and others.

The invention relates to graphene for preparing conductivity-enhanced long carbon chain nylon and a preparation method thereof, and is characterized in that graphite is used as an anode, a platinum sheet is used as a cathode, a eutectic solvent is used as an electrolyte, a stripping process is triggered by applying a dynamic voltage, few-layer graphene is successfully prepared, and the yield is up to 85%. And carrying out suction filtration, collection and drying on the stripped sample to obtain the graphene filler. Graphene is prepared by using a dynamic potential regulation and control technology, the method is efficient and environment-friendly, the obtained graphene filler has good compatibility with nylon and glass fibers, and the graphene reinforced nylon composite material with high conductivity, low hygroscopicity and excellent mechanical properties is developed.

The invention discloses a high-elongation dielectric composition, a preparation method and an application method thereof, and a substrate. The dielectric composition with high elongation rate comprises high-molecular resin and inorganic filler, wherein the polymer resin comprises bonding resin, and the bonding resin comprises epoxy resin and phenolic resin; the structural resin is selected from at least one of a polymer with a main chain containing an aromatic ring and / or a heterocyclic ring and a rubber polymer; the dielectric constant of the inorganic filler is not less than 2000 in the frequency range of 1kHz to 1GHz. Through a specific synergistic resin system, the high dielectric constant and the high elongation rate are achieved at the same time, the excellent melt viscosity, the excellent heat resistance, the low thermal expansion coefficient and the low hygroscopicity are achieved, and the defects of layering and plate explosion caused by poor fluidity, poor mechanical performance and mismatching of thermal stress in the manufacturing process of an existing high-Dk material are overcome.

The utility model provides humidity detection display card paper for textiles, which comprises detection card paper, the detection card paper comprises a water absorption substrate and a printing layer, a plurality of humidity detection areas are arranged on the water absorption substrate at intervals, and the humidity detection areas respond to different humidity threshold values and generate corresponding color changes; the printing layer is arranged on the water absorption substrate and provided with a plurality of display grooves, and the display grooves correspond to the humidity detection areas one to one and are used for exposing the humidity detection areas. The water absorption base plate has good moisture absorption performance, when the humidity of the textile is increased, the water absorption base plate can absorb moisture, and the color of the corresponding humidity detection area is changed. By observing the color change of the humidity detection area, the humidity state of the textile is intuitively judged, so that corresponding measures are taken, the use convenience and comfort are improved, and the device is particularly suitable for the textile, such as a dehumidification pad, a quilting pad, a blanket and the like.

The utility model discloses a moisture-permeable quick-dry four-proofing fabric, relates to the technical field of textiles, and aims to solve the problem that the moisture dissipation speed is reduced while the four-proofing effect of the fabric is improved, and adopts the technical scheme that a plurality of propping strips and a plurality of moisture dissipation grooves are arranged on one side of a base cloth layer, and a plurality of moisture dissipation blocks are arranged on the bottom surfaces of the moisture dissipation grooves; a plurality of moisture guiding blocks are arranged on the side, away from the moisture dissipation groove, of the base cloth layer, the waterproof moisture-permeable film is compounded on the top faces of the moisture guiding blocks, gaps between the moisture guiding blocks and the base cloth layer and between the moisture guiding blocks and the waterproof moisture-permeable film form ventilation spaces, and ventilation grooves communicated with the ventilation spaces are formed in the bottom face of the moisture dissipation groove. The internal pores and the surface area are increased after the polyester filaments are profiled, a hydrophilic layer is formed after the polyester profiled filaments are subjected to hydrophilic finishing, so that the hygroscopicity and the air permeability are improved, and the ventilation effect on the two sides of the fabric is improved through the ventilation grooves communicated with the ventilation space. The moisture dissipation speed of the fabric is accelerated.

The application belongs to the field of medicine and chemical industry, and discloses a mycophenolic acid medicine co-crystal and a preparation and application thereof. The co-crystal is prepared from mycophenolic acid and 4,4-bipyridine as raw materials. The co-crystal is a stoichiometric ratio diversity co-crystal. In the molecular structure of the co-crystal, the amount of substance of mycophenolic acid and 4,4-bipyridine is 1:1 or 2:1. The two kinds of mycophenolic acid medicine co-crystals prepared by a grinding method, a room temperature evaporation method or a slurry method are diversity co-crystals, and the diversity of the mycophenolic acid co-crystal has never been reported. The application solves the problems of poor stability and high hygroscopicity of mycophenolic acid, and the prepared co-crystal has low hygroscopicity and good stability.

The present application relates to a kind of compound NMNH calcium salt, especially to a kind of reduced beta-nicotinamide mononucleotide calcium salt Polymorph and its preparation method, and they are used as pharmaceutical ingredients, health product ingredients, cosmetic ingredients or as food additive, and preparation containing these salts, belong to medicine, health product, cosmetic, food additive field.The specific, the present application describes NMNH calcium salt Polymorph, the crystal shows long-term sustained stability, significantly better than the stability of NMNH disodium salt, anti-hygroscopicity, more conducive to long-term storage, popularization and marketing.The NMNH calcium salt crystal preparation process is simple, easy to control, suitable for large-scale production.

The utility model discloses a dehumidification structure and a dehumidification rotating wheel. The dehumidification structure comprises a moisture absorption medium layer, a sericin layer surrounding the peripheral side of the moisture absorption medium layer, a first connecting assembly and a second connecting assembly with elastic recovery capacity. The first connecting assembly comprises a plurality of fixed connecting columns capable of conducting heat, and the two ends of each fixed connecting column are connected with the moisture absorption medium layer and the sericin layer correspondingly; the second connecting assembly comprises a plurality of springback connecting columns; each springback connecting column penetrates through the moisture absorption medium layer in the thickness direction of the moisture absorption medium layer, and the two ends of each springback connecting column are connected with the corresponding sericin layers on the two sides respectively; according to the dehumidification structure, the moisture absorption performance can be improved by effectively utilizing the expansion characteristic of the moisture absorption medium layer, the expansion of the moisture absorption medium layer can be restrained to avoid excessive expansion, and the dehumidification structure can be used in the dehumidification rotating wheel.

The invention is suitable for the technical field of inorganic powder surface modification, and provides super-hydrophobic caustic-burned magnesia powder and a preparation method thereof. The super-hydrophobic light-burned magnesia powder comprises the following raw materials in parts by weight: 60-70 parts of 85% light-burned magnesia powder, 8-12 parts of modified SiO2 nanoparticles, 10-15 parts of tetraethoxysilane, 5-8 parts of hexadecyl trimethoxysilane, 80-100 parts of ethanol, 3-5 parts of ammonia water, 2-4 parts of modified zirconium oxide and 1-3 parts of a fluoride additive. According to the preparation method, SiO2 nanoparticles and zirconium oxide are modified, so that the hydrophobic property, hydration resistance stability and high-temperature service reliability of the light-burned magnesia powder are remarkably improved, the technical problems that traditional light-burned magnesia powder is high in hygroscopicity and prone to caking are solved, and the preparation method is simple in preparation process, controllable in cost and suitable for multiple industrial fields such as metallurgy and refractory materials.

Solvents for agrochemical formulation with lesser toxicity and at least comparable physiochemical characteristics as compared to existing agrochemical solvents are described. The solvent may have similar or higher flash point than existing agrochemical solvents. The solvent may have the same or lesser hygroscopicity than existing agrochemical solvents. The solvent may prevent crystallization or precipitation of the agrochemical formulation at temperatures below or equal to zero degrees Celsius.

The invention relates to an air dehumidification system and method for an agricultural greenhouse, the air dehumidification system comprises a solution dehumidifier and a solution regenerator which are connected through a solution circulation pipeline, and the solution dehumidifier takes a hygroscopic solution as a medium to dehumidify air; the dehumidified hygroscopic solution enters the solution regenerator through the solution circulating pipeline, and returns to the solution dehumidifier after being concentrated and regenerated; an evaporator is connected between a solution outlet and a solution inlet of the solution dehumidifier; a condenser is connected between the solution outlet and the solution inlet of the solution regenerator; the evaporator is connected with the condenser through an air compression circulating device; and the air dehumidified by the solution dehumidifier is introduced into the agricultural greenhouse. The pressurizing mode can be operated at night to enhance the mass transfer driving force between gas and liquid, so that the lower air supply moisture content is achieved, and the requirement difference of the day and night moisture content of crops is effectively met. According to the invention, air humidity control in the greenhouse can be accurately realized, and different humidity requirements of crops day and night are met.

The utility model relates to wall body technical field of damp proof function discloses a wall body with damp proof function, the utility model discloses cement wall body layer that reinforced concrete constitutes, is equipped with latex paint layer on the wall surface of cement wall body layer, and is equipped with damp proof composite coating wallpaper through the glue pasting and is fixed outside latex paint layer, damp proof composite coating wallpaper is composed of multilayer structure, wherein at least including a layer of hygroscopic structure, and the hygroscopic performance is higher than the hygroscopic performance of latex paint layer. The utility model is based on the reasonable, scientific innovation improvement of existing wall body structure, through the damp proof composite coating wallpaper of the surface of wall body pasting can absorb moisture and refuse water, and the vast majority of water vapor is excluded, and the certain breathing permeability of concrete wall body is guaranteed, and compared with prior art, the cavity damp proof performance of plum rain weather is effectively improved.

In this three-fluid heat exchanger, a plurality of heat exchange units are stacked in the vertical direction, each of the heat exchange units having: a tubular heat transfer tube inside which a heat medium fluid is made to flow and in which minute irregularities are formed on the outer peripheral surface from one end to the other end in a cross-section viewed along the axial direction; a spray tray in which a slit having an edge extending along the axial direction of the heat transfer tube is formed in a bottom plate, a radially outer upper part of the heat transfer tube is positioned in contact with the edge from one end to the other end, and a hygroscopic liquid is supplied so as to flow down from the slit to the outer periphery of the heat transfer tube; and a filler that brings the hygroscopic liquid and a gas to be treated into contact with each other below the spray tray.

The invention discloses an all-weather and stretchable ionic liquid gel-based moisture power generation device and a preparation method thereof.The device is of a sandwich structure and comprises an ionic liquid gel moisture power generation functional layer, and a moisture-permeable top electrode and a moisture-resistant bottom electrode are arranged on the two sides of the ionic liquid gel moisture power generation functional layer respectively; the components of the ionic liquid gel moisture power generation functional layer comprise a polymer skeleton with electronegativity and a hygroscopic ionic liquid dispersion medium coupled with the polymer skeleton. Wherein the contact interface of the electrode and the functional layer has a charge adsorption effect generated by a weak oxidation-reduction reaction. The material components of the polymer network and the ionic liquid dispersion medium are regulated and controlled through gel molecular engineering, so that the functional layer has excellent mechanical properties and multifunctional characteristics; and meanwhile, a built-in electric field is introduced into an electrode / gel interface, so that the migration behavior of carriers generated by moisture can be effectively regulated and controlled, and the dependency of a moisture power generation technology on a high-humidity environment is reduced.

The invention provides a preparation method of refined glufosinate-ammonium salt soluble granules, which comprises the following steps: S1, crushing raw powder: crushing refined glufosinate-ammonium salt raw powder to obtain crushed raw powder; s2, jet milling: performing rotary cutting and drying on the crushed raw powder by using hot nitrogen, and performing cyclone separation to obtain dry powder; s3, raw material pretreatment: mixing the dry powder with a compound additive and water to form slurry, and adding a pH regulator to adjust the pH of the slurry; and S4, high-tower mixing granulation: atomizing the slurry through a nozzle at the top of a granulation tower, enabling the formed particles to freely fall to the bottom of the granulation tower, and carrying out whole-particle screening to obtain the refined glufosinate-ammonium salt soluble granules. The invention solves the problems of poor stability of active ingredients, strong hygroscopicity of particles, poor solubility, discontinuous production and the like in the prior art.

A separation system (100, fig.1) for a vacuum cleaner (10, fig.1), comprising a chamber 122 housing a first filter 202, preferably a mesh, for filtering airflow entering through an airflow inlet (140, fig.6), and a second filter 208, preferably a hygroscopic filter media with a hydrochromic indicator, underlying the first filter such that airflow flows through it after flowing through the first filter, wherein both the first filter and the second filter extend in a direction parallel to a first axis along which the airflow enters the chamber, wherein the airflow flows over the first filter in a direction generally parallel to the first axis, and wherein the first filter and the second filter are of different cross-sectional shapes, preferably U-shaped (i.e., C-shaped or curved) and flat, respectively, when viewed along a direction parallel the first axis. The filtered airflow may then flow to an outlet channel (310, fig. 17) that may underlie the second filter, which extends parallel to the first axis. The airflow may then enter a motor assembly (1000, fig. 1) before exiting the device. The chamber may be defined by a bin body 108 for collecting dirt.

The application discloses a double-layer nanofiber membrane humidity response actuator and a preparation method and application thereof, and belongs to the technical field of humidity response actuators. The double-layer nanofiber membrane humidity response actuator is a double-layer film structure, comprising a humidity response active layer and a humidity response inert layer. The humidity response active layer is a nanofiber membrane A prepared by electrospinning technology from a hygroscopic polymer material A, and the nanofiber membrane A has an orientation structure. The humidity response inert layer is a nanofiber membrane B prepared by electrospinning technology from a mixture of a hygroscopic polymer material B and a cellulose ether. The double-layer nanofiber membrane humidity response actuator adopts a double-layer nanofiber membrane structure, and the nanofiber membrane has very small bending stiffness. The characteristics make the humidity response actuator have a large driving stroke and a fast response speed. The humidity response inert layer and the humidity response active layer have good binding force, which guarantees excellent cycle stability of the actuator, and the actuator has a wide application prospect.

This invention relates to the field of microcapsules, specifically to a method for preparing low-hygroscopic egg white peptide microcapsules and their application. The method includes the following steps: (1) weighing sugars and soy protein isolate according to a certain ratio, mixing them in deionized water, dissolving them, and stirring evenly at a certain speed to form a composite wall material solution; (2) adding the egg white peptide solution to the composite wall material solution, stirring evenly to form a microcapsule solution; (3) using spray drying technology to evaporate and remove the moisture, obtaining egg white peptide microcapsule powder. This invention uses egg white peptide as the core material and polysaccharides and soy protein isolate as the composite wall material to prepare an egg white peptide microcapsule. This microcapsule has good encapsulation effect and low hygroscopicity, providing a research basis for the better development and utilization of egg white peptide.

The invention relates to a high-performance composite fiber and a warm-keeping and moisture-absorbing fabric made of the high-performance composite fiber, and belongs to the technical field of fabric manufacturing. The high-performance composite fiber is prepared from a raw material spinning solution through wet spinning, and the raw material spinning solution is prepared by mixing a solvent, polyethylene glycol terephthalate, modified cationic polyacrylamide and long alkyl chain modified graphene. According to the invention, by introducing the modified cationic polyacrylamide, the composite fiber obtained by spinning has good hygroscopicity, antistatic property and antibacterial property, and by introducing the long alkyl chain modified graphene, the cohesive property of the polyethylene glycol terephthalate and the modified cationic polyacrylamide is further improved; due to the existence of the long alkyl chain modified graphene, the intersticity and the diameter of the internal structure of the obtained composite fiber are increased, and the air permeability of the composite fiber is improved.

The present invention addresses the problem of providing a crystal of a compound having EGFR-inhibiting ability or a salt thereof, the crystal having excellent stability (heat resistance, purity) and / or low hygroscopicity. One aspect of the present invention provides a crystalline form of (S)-N-(4-amino-6-methyl-5-(quinolin-3-yl)-8, 9-dihydropyrimido [5, 4-b] indolizine-8-yl) acrylamide having a peak in a powder X-ray diffraction pattern at a predetermined angle (diffraction angle 2 [theta] + / -0.2 DEG).

The utility model relates to the technical field of elastomers, in particular to a supercritical foaming elastomer drying device which comprises a shell, the shell comprises a feeding pipe, a transmission frame, a screen frame, a motor, a transmission structure and a discharging pipe, the feeding pipe is fixed to the top end of the shell, the transmission frame is fixedly connected to the inner top end of the shell, and the motor is fixedly connected to the bottom end of the shell. Through sieving, uneven heating or local degradation during drying can be avoided, and the material purity is guaranteed; for the high-hygroscopicity elastomer, the subsequent foaming defect caused by impurity adsorption can be reduced through sieving; the particle uniformity is optimized, elastomer particles with uniform particle sizes can be screened out through screening, it is ensured that the heat transfer efficiency and the moisture escape efficiency are consistent in the drying process, and the drying effect is improved; the uniform particles are easier to form a stable gas saturation state in the supercritical fluid, so that the uniformity of subsequent foaming cells is facilitated.

The present application is named inert carbon and its preparation method and application, which can be applied to the field of manufacturing smoke and fire agent (medicine) and initiating explosive, completely replaces black powder and solves the emission of harmful gases of sulfur dioxide and nitrogen oxides after combustion and explosion, and greatly improves the launching power, sensitivity, smoke and hygroscopicity. The carbon source is crushed to form carbon powder, and the water-soluble substances with strong hygroscopicity in the carbon powder are removed by water washing to form clean carbon powder. The high-purity carbon powder can also be prepared by boiling the carbon powder with strong acid or strong base and then washing with water. Then, the carbon powder, clean carbon powder, high-purity carbon powder or mixed carbon powder is subjected to three-dimensional penetration coating by using high-temperature or high-temperature pressure pentaerythritol aqueous solution, so as to become a truly high-energy fast-burning inert carbon. Subsequently, the surface of the inert carbon can be modified and coated by using organic matter such as stearic acid to reduce the friction sensitivity and impact sensitivity of the smoke and fire agent (medicine), so as to replace sulfur and ordinary carbon powder, and make it perfectly applied in the smoke and fire agent (medicine) and initiating explosive.

The present application belongs to the technical field of food production and processing, and particularly relates to a method for preparing pineapple fruit powder by boiling granulation, which comprises the following steps: adding γ-cyclodextrin into pineapple juice, stirring and dissolving to obtain an inclusion liquid; subjecting the inclusion liquid to ceramic membrane microfiltration to obtain a dialysate; subjecting the dialysate to vacuum decompression concentration and filtration to obtain a concentrated liquid; weighing auxiliary materials according to the total solid mass of the concentrated liquid, and dividing the auxiliary materials into first auxiliary materials and second auxiliary materials; placing the first auxiliary materials into a boiling granulator, spraying the concentrated liquid to obtain shaped particles; preparing an embedding solution from the second auxiliary materials, and performing spray embedding, drying and sieving on the shaped particles to obtain pineapple fruit powder. The pineapple fruit powder prepared by the method has high solubility, good fluidity, low hygroscopicity, high nutrient retention rate, low processing cost and long product shelf life.