264 results about "Gum arabic" patented technology

The invention relates to the technical field of soil amendments, in particular to a soil amendment containing earthworm enzymatic hydrolysate and a preparation method of the soil amendment. The soil conditioner containing the earthworm enzymatic hydrolysate comprises the following components: earthworm enzymatic hydrolysate microcapsules and adjuvant particles in a mass ratio of (2-4): 1, the earthworm enzymatic hydrolysate is prepared by performing enzymolysis on fresh earthworm homogenate by compound enzyme, and the compound enzyme comprises cellulase and protease; the wall material of the earthworm enzymatic hydrolysate microcapsule comprises at least one of chitosan, calcium alginate, gelatin and Arabic gum; the auxiliary agent comprises humic acid and inorganic natural minerals. According to the soil conditioner containing the earthworm enzymatic hydrolysate, the earthworm enzymatic hydrolysate is wrapped by the microcapsules, the retention rate of active ingredients in the earthworm enzymatic hydrolysate can be remarkably increased, and the soil condition can be further improved by matching with humic acid and inorganic natural minerals for use.

The invention relates to a counter-ion adsorption high-voltage electrostatic spraying device and application thereof to preparation of a food sugar coating, and belongs to the technical field of equipment machinery and food processing. The device comprises a material conveying system, a high-voltage electrostatic spraying system, a sugar liquid supply system, a gas supply system, a sugar liquid recovery system, a microwave vacuum drying system and a control cabinet, the sugar liquid supply system and the gas supply system are both connected with the high-voltage electrostatic spraying system, the material conveying system is arranged below the high-voltage electrostatic spraying system, the material conveying system is connected with the microwave vacuum drying system, and the sugar liquid recovery system is further arranged below the material conveying system; the above systems are all controlled by a control cabinet. Through pulse switching of a high-voltage electrostatic field and a sugar liquid material, counter-ion charge accumulation of sprayed sugar liquid is realized, namely, positive charge sugar liquid (chitosan and the like) and negative charge sugar liquid (Arabic gum, carrageenan and the like) are alternately sprayed under the high-voltage electrostatic field, so that electrostatic adsorption and directional deposition of the sugar liquid on the surface of food are realized.

The invention relates to the technical field of biology, in particular to silymarin inclusion compound lipidosome and a preparation method and application thereof. The silymarin inclusion compound liposome is prepared from the following components in parts by weight: 10 to 48 parts of silymarin, 10 to 53 parts of phospholipid, 5 to 10 parts of Arabic gum and 25 to 70 parts of cyclodextrin. According to the invention, cyclodextrin and phospholipid are combined to form a double-drug-loading structure; on the basis, Arabic gum is used as a film-forming agent to form a protective film on the surface of the liposome, so that the stability of the system is further improved; the silymarin inclusion compound is encapsulated in a water phase in the liposome, and meanwhile, part of free silymarin is encapsulated in a lipid bilayer. According to the structure, the solubility and the encapsulation efficiency of the silymarin are remarkably improved, the liposome stability is enhanced, the drug release is effectively controlled, and the silymarin inclusion compound lipid is simple in preparation process and suitable for industrial production.

The invention discloses a fluoride-free strong-acid-free reverse flotation method for extracting a high-purity quartz sand flotation product from granite pegmatite, and belongs to the technical field of mineral flotation. The method comprises the following steps: carrying out graded crushing and ore grinding on granite pegmatite to obtain slurry to be treated; carrying out wet magnetic separation on the to-be-treated slurry to obtain ore pulp after magnetic separation and magnetic-containing minerals; the pH value of the ore pulp is not adjusted, reverse flotation is carried out in the presence of a quartz mixed inhibitor, and a feldspar product and a quartz product are obtained; the quartz mixed inhibitor is a combination of a component A and a component B, wherein the component A is selected from at least one of sodium metasilicate, sodium tripolyphosphate, sodium hexametaphosphate, carboxymethyl cellulose and salinized water glass; the component B is selected from at least one of guar gum, Arabic gum, sodium humate and citric acid. The method is free of fluorine and strong acid, green and efficient, and is a method for preparing high-purity quartz sand from pegmatite with high industrial application feasibility.

The invention discloses a blood fat reducing composition with homology of medicine and food and a preparation method thereof, and belongs to the technical field of homology of medicine and food. The medicinal and edible blood fat reducing composition comprises the following raw materials in parts by mass: 8-15 parts of peach kernels, 10-20 parts of sea-buckthorn, 6-12 parts of Chinese wolfberry fruits, 3-6 parts of platycodon roots, 4-8 parts of dried orange peel and 5-10 parts of microcapsules. The microcapsule consists of a core material and a wall material, wherein the core material comprises stigma croci, bamboo leaf flavone, earthworm protein peptide powder and natto; the wall material comprises gelatin, sodium carboxymethyl cellulose and Arabic gum-maltodextrin mixed powder. In addition, the invention also provides a preparation method of the blood fat reducing composition. The blood fat reducing composition provided by the invention realizes safe and efficient blood fat reduction.

The invention discloses antibacterial and antiskid PU leather and a preparation method and application thereof, and belongs to the technical field of PU leather.The preparation method comprises the steps that a ZIF-8 / g-CNcomposite photocatalyst is obtained through an in-situ growth method, silver-doped nano-hydroxyapatite is prepared through an ion replacement method, the ZIF-8 / g-CNcomposite photocatalyst and the silver-doped nano-hydroxyapatite are compounded through liquid phase adsorption, and the antibacterial and antiskid PU leather is obtained. The preparation method comprises the following steps: preparing composite antibacterial powder, uniformly dispersing the composite powder into acrylamide, Arabic gum and polyethylene glycol methyl ether methacrylate serving as monomers, initiating polymerization to form composite coating slurry, performing oxygen plasma activation on PU leather, blade-coating the composite coating slurry, and curing to obtain the antibacterial antiskid PU leather. The material integrates the functions of self-cleaning, antibiosis, skid resistance and wear resistance.

The invention relates to the technical field of toothpaste preparation, and particularly discloses bamboo leaf flavonoid toothpaste as well as a preparation method and application thereof. The bamboo leaf flavonoid toothpaste is prepared from the following raw materials in parts by weight: 26 to 30 parts of a wetting agent, 1.6 to 1.8 parts of a binding agent, 0.2 to 0.4 part of a sweetening agent, 20 to 24 parts of a friction agent, 1.2 to 1.6 parts of a surfactant, 0.3 to 0.5 part of a pH (Potential of Hydrogen) regulator, 2.4 to 2.8 parts of active microcapsules, 0.4 to 0.6 part of essence and 14 to 18 parts of de-ionized water. A core material of the active microcapsule is a nano-dispersion, a wall material of the active microcapsule is prepared from Arabic gum and chitosan through a complex coacervation method, the nano-dispersion is prepared from xanthan gum, a bamboo leaf flavone extract, xylitol, calcium chloride and modified pectin through a reaction, and the modified pectin is prepared by mixing degreased pectin and chlorogenic acid according to a specific proportion. Through the synergistic effect of the substances, the dispersibility and antibacterial and anti-inflammatory performance of the bamboo leaf flavonoid toothpaste are improved.

The invention discloses a monascus red pigment nano stabilized carrier constructed based on a hierarchical self-assembly strategy as well as a preparation method and application thereof, and belongs to the technical field of nano carriers. According to the invention, a beta-cyclodextrin-enzymolysis sodium caseinate-Arabic gum ternary supramolecular composite system is constructed, and efficient encapsulation, bitter taste shielding and stability improvement of pigment molecules are realized by virtue of a multi-stage self-assembly mechanism. According to the carrier, a hydrophobic core domain is constructed by virtue of an enzymolysis peptide fragment, bitter components are captured by virtue of an inclusion effect of beta-cyclodextrin, and the interface stability is enhanced by virtue of Arabic gum, so that a nano-scale delivery system with a clear structure and excellent performance is finally formed, and the photo-thermal stability and sensory quality of the pigment are remarkably improved; and the powder obtained by spray drying is good in flowability, easy to re-disperse and high in product applicability. The carrier is wide in raw material source, the preparation process is green and mild, large-scale amplification is easy, and the carrier has good application potential in the high-value-added fields such as high-end functional food, clarified beverages and pharmaceutical preparations.

This invention provides a microcapsule-based deodorizing cat litter, a concentrated granular cat litter, its preparation method, and its application, belonging to the field of cat litter preparation technology. The invention uses a complex of modified starch, gum arabic, polyvinylpyrrolidone, and sorbitol as the wall material to encapsulate fragrances and / or enzymes, resulting in microcapsules. The cat litter prepared from these microcapsules achieves intelligent targeted deodorization. The wall material ruptures upon contact with moisture in urine or feces, precisely releasing the active ingredients, allowing for a slow and continuous release of the deodorizing components. The cat litter provided by this invention exhibits excellent deodorization, as well as good water absorption, dust control, and clumping properties. This cat litter successfully balances superior functionality, production feasibility, and cost control, making it a high-end cat litter with significant market potential.

The present application relates to a kind of carbonized silicon crucible for aluminum alloy smelting and its preparation method.The technical scheme is: carbonized silicon particle A, carbonized silicon particle B, carbonized silicon fine powder A, carbonized silicon fine powder B and xylitol are mixed, immersed in silica sol, dried, heat treated;Silicon dioxide coated carbonized silicon obtained by heat treatment is mixed with alumina powder, vanadium pentoxide and deionized water, to obtain mixed slurry, additional binder, sintering aid, polyacrylamide and gum arabic, mix, ball mill, to obtain carbonized silicon slurry.After exhausting, carbonized silicon slurry is placed in gypsum mold for preparing crucible, stand, pour out excess carbonized silicon slurry, continue to stand, take out the carbonized silicon body after standing, indoor curing, drying, heat treatment at 1300-1500 DEG C, to obtain carbonized silicon crucible for aluminum alloy smelting.The carbonized silicon body prepared by the present application is not easy to break, the sintering temperature of the product is low, the compressive strength is large, the thermal shock stability is high, and the resistance to aluminum alloy melt erosion is strong.

The application discloses a high-oil-content essential oil microcapsule powder and a preparation method thereof, and belongs to the technical field of microcapsules. The preparation method comprises the following steps: preparing a gelatin water solution, preparing an acacia water solution, preparing an acacia-starch water solution, preparing a chitosan-tannic acid water solution, preparing an emulsion, primary crosslinking, and secondary crosslinking. The essential oil microcapsule powder prepared by the method has high oil content, low surface oil content, excellent slow-release performance, solubility, long-term controlled-release performance and fluidity, and uniform particle size distribution.

This invention discloses a semi-solid candy similar to marshmallows, comprising a matrix component, a thickening and stabilizing system, a moisturizing and softening system, a flavor complex system, a nutritional fortification system, a functional auxiliary system, and a shaping and regulating system. This invention utilizes the combined action of the matrix component and the complex thickening and stabilizing system. Low-sugar matrices such as maltitol and erythritol are combined with gelatin, gum arabic, and compound colloids to form a three-dimensional network structure. Combined with a precise aeration process, the product possesses both the fluffy, airy feel of traditional marshmallows and the soft, delicate texture of semi-solid candies. It is soft and non-sticky in the mouth, leaves no residue after chewing, does not collapse or crumble, and is stable at room temperature. It is also resistant to softening and deformation at high temperatures, thus overcoming the shortcomings of existing products such as monotonous texture, easy deformation, and stickiness.

This invention discloses a microcapsule fire extinguishing agent based on a porous material-coated modified core, its preparation method, and its application. The modified core uses high-temperature resistant attapulgite-based porous ceramic particles coated with perfluorohexanone as the extinguishing medium, and gelatin and gum arabic are used to form the capsule wall. The resulting microcapsule fire extinguishing agent based on a porous material-coated modified core can quickly and effectively extinguish lithium-ion battery fires and effectively control the release rate of the extinguishing medium in the microcapsule fire extinguishing agent. Continuous release of the extinguishing medium inhibits the thermal runaway and reignition of lithium-ion batteries. Using high-temperature attapulgite-based porous ceramic particles to coat the modified core improves the storage stability and transportation stability of the microcapsule fire extinguishing agent, ensuring its safe use.

The application discloses a functional probiotic microencapsulated intestinal shield system and a preparation method and application thereof. A core layer comprises four probiotics, i.e., lactobacillus acidophilus La-14, animal bifidobacterium Bb-12, lactobacillus rhamnosus GG and lactobacillus reuteri DSM 17938, and the weight ratio is 3:4:2:1, and the total viable bacterial count is greater than or equal to 10^10 CFU / g. An inner layer is a targeted release control layer, which is composed of ethyl cellulose, polylactic acid, chitosan and lactose, can swell in a pH 5.5 to 6.5 environment and can dissolve in a pH 6.8 to 7.2 environment. A middle layer is a buffer protection layer, which is composed of calcium carbonate, disodium hydrogen phosphate and sodium alginate, and can maintain the internal pH of the microcapsule at 4.5 to 5.5 in a gastric acid environment. An outer layer is an intelligent response protection layer, which is composed of konjac glucomannan, xanthan gum and gum arabic, and can form a protective film in a gastric acid environment with a pH less than 3.0 within 5 minutes. Through the synergistic protection of the four-layer microcapsule structure, the probiotics can achieve a high survival rate in the gastric acid environment of cats, and can be accurately released at specific positions in the intestinal tract, which is helpful to improve the intestinal health of cats.

The present invention relates to a dry composition capable of being pressed, comprising: - at least one powdered polyol, - at least one powdered gelling agent having flow properties corresponding to a Carr index less than or equal to 25 and a Hausner ratio less than or equal to 1.34, - a combination of an ester and Acacia Senegal Gum, - optionally, at least one surfactant, - optionally, at least one internal lubricant, - optionally, at least one preservative, - optionally, at least one buffering and pH regulating agent, - optionally, at least one fragrance, - optionally, at least one disintegrating agent, said composition in the form of a pressable powder having flow properties corresponding to a Carr index less than or equal to 25 and a Hausner ratio less than or equal to 1.34.The present invention also relates to a solid product obtained by pressing the dry composition, to a cosmetic composition, as well as to their preparation process and their use.

The application relates to the technical field of textile materials, and provides hyaluronic acid microcapsules, hyaluronic acid-polyamide 6 master batches, hyaluronic acid-polyamide 6 filaments and preparation methods. The hyaluronic acid microcapsules are prepared by taking gum arabic and gelatin as wall materials, the hyaluronic acid-polyamide 6 master batches are prepared by using the hyaluronic acid microcapsules, and then the hyaluronic acid-polyamide 6 filaments are prepared by using the hyaluronic acid-polyamide 6 master batches. The hyaluronic acid microcapsules provided by the application can be uniformly dispersed in polyamide 6 fibers, and the spinnability and mechanical properties of the fibers are not affected, and the mechanical properties of the obtained filaments are excellent. The results of examples show that the breaking strength of the hyaluronic acid-polyamide 6 DTY filaments prepared by the application is 3.89-4.02 cN / dtex, and the breaking elongation is 26.31-28.02%.

The invention provides a wet response directional self-cleaning down-proof fabric, a preparation method thereof and a down feather product, the preparation method of the wet response directional self-cleaning down-proof fabric comprises the following steps: S1, adding polyester polyurethane and microcapsules into an organic solvent to obtain a spinning solution; the microcapsule comprises a photocatalyst and a shell layer wrapping the photocatalyst, the shell layer comprises a component A and a component B, the component A comprises at least one of gelatin, Arabic gum, carrageenan and starch, and the component B comprises calcium alginate; s2, a knitted fabric serves as a receiving substrate, the spinning solution is subjected to electrostatic spinning, drying and hot pressing, the knitted fabric contains cellulose fibers, and the mass percentage content of the cellulose fibers in the knitted fabric is larger than 50%. The down-proof fabric capable of conducting moisture in one direction can be prepared, moisture of a quilt is accumulated on one side of the nanofibers in the using process, the self-cleaning function is triggered in the moisture accumulation state, and the down-proof fabric has the advantages of being breathable and soft.

This invention provides a high-hygroscopic, water-free composite gel-type calcium and magnesium salt tablet and its preparation method, which is made from the following raw materials in parts by weight: 45-70 parts calcium and magnesium salt, 15-25 parts gum arabic, 3-15 parts mica powder, 2-12 parts polyethylene oxide, 0.5-2 parts sodium nitrite, and 2-30 parts gelatin. This tablet exhibits high hygroscopicity and excellent physical properties.

This invention discloses a mushroom-based edible paper and its preparation method, belonging to the field of food technology. The mushroom-based edible paper comprises the following raw material components: 100-500 parts wheat flour, 100-200 parts mushroom powder, 10-50 parts corn flour, 10-50 parts oat flour, 10-100 parts soybean flour, 1-10 parts probiotics, 10-50 parts gellan gum, 10-50 parts gum arabic, 10-100 parts glycerol, 1-50 parts calcium chloride, and 1-5 parts sodium bicarbonate. This invention combines mushroom powder with wheat flour, corn flour, oat flour, and soybean flour, and then ferments it with *Lactobacillus plantarum* MXC. The resulting mushroom-based edible paper overcomes the shortcomings of traditional edible paper, such as poor strength, difficulty in shaping, and poor texture. The prepared mushroom-based edible paper has the characteristics of low GI, enhanced paper strength and wet strength, resistance to breakage, long shelf life, and low water vapor permeability; moreover, it can be widely used as green packaging paper in the food, pharmaceutical, and other fields.

The invention discloses a multicomponent-based high-molecular polymer dust suppressant and a preparation method thereof, and is characterized in that the multicomponent-based high-molecular polymer dust suppressant is prepared from the following raw materials in parts by weight: 10-30 parts of sodium alginate, 5-14 parts of Arabic gum, 0.5-5 parts of ferric trichloride, 5-10 parts of polydopamine modified attapulgite, 2-10 parts of sorbitol, 1-5 parts of tea saponin and 100-200 parts of water. In the use process of the dust suppressant, spray droplets can wet dust particles and adhere to the surface of dust, so that the dust rapidly falls, and the dust suppressant can stably suppress dust for a long time, is environment-friendly and long in dust suppression service life, and particularly has excellent rain wash resistance.

The invention belongs to the technical field of essence, and particularly relates to a preparation method of herbal tea flavor herbal extract and essence. The preparation method comprises the following steps: (1) preparing herbal raw materials; (2) mixing the herbal raw materials with water, and performing extraction, rough filtration and suction filtration to obtain an extract liquid; concentrating under reduced pressure to obtain a concentrated solution; (3) mixing the concentrated solution with essence, magnetically stirring, transferring into a high-pressure homogenizer, and homogenizing to obtain a core material system; (4) weighing gelatin and maltodextrin, grinding, spreading the mixed powder, and carrying out a dry-heat glycosylation reaction; cooling to room temperature, and grinding to obtain modified gelatin; (5) adding the core material system into a gelatin aqueous solution; adding an Arabic gum aqueous solution and a glutaraldehyde aqueous solution; collecting the precipitate; and washing and drying in vacuum to obtain the herbal tea flavored herbal extract-essence coated compound. The product disclosed by the invention still can keep a good core material retention effect, and the industrial application range of herbal flavor ingredients is greatly expanded.

The invention relates to a large-particle dog and cat oral health-care functional food wrapped with instant freeze-dried particles and a preparation method thereof, and belongs to the technical field of pet food. According to the scheme, an external spraying system comprises grain base material particles, 0.1 to 0.15 part of lecithin, 0.002 to 0.003 part of monostearin, 0.001 to 0.003 part of vitamin E and 0.8 to 1.2 parts of chicken oil, and an instant freeze-dried particle layer comprises 0.1 to 0.2 part of fucoidan, 0.02 to 0.05 part of lysozyme, 0.04 to 0.08 part of tea polyphenol, 0.02 to 0.04 part of zinc gluconate, 0.05 to 0.1 part of Arabic gum, 0.03 to 0.1 part of glutamine, 0.01 to 0.02 part of vitamin B2, 0.01 to 0.04 part of vitamin B12 and 0.02 to 0.07 part of glycine. The toothpaste can effectively inhibit the formation of dental plaque and dental calculus and remove halitosis.

This application relates to the field of antioxidant skincare products, specifically an astaxanthin essence with natural antioxidant effects and its preparation method. An astaxanthin essence with natural antioxidant effects comprises: an aqueous phase: 15%-30% natural plant extracts, 3%-8% moisturizers, 0.3%-1.5% thickeners, and preservatives; an oil phase: 5%-14% plant oils, 1%-4% lecithin, 0.5%-2% rosemary extract, and 0.3%-1.5% green tea extract; 0.8%-4% astaxanthin liposomes; gum arabic; a pH adjuster; and water; wherein the natural plant extracts include aloe vera juice and cucumber juice. This application aims to improve the stability and bioavailability of astaxanthin and enhance the antioxidant properties of the essence by using natural raw materials and innovative processes; while ensuring the product is natural and gentle, reducing skin irritation, and meeting consumers' demand for high-quality natural skincare products.

The invention discloses a recyclable chlorine and fluorine ion adsorption material as well as a preparation method and application thereof. The recyclable chlorine and fluorine ion adsorption material is a multi-level adsorption material of silica gel, zeolite, Arabic gum and strontium ferrite wrapped by alkali-washed fly ash. An adsorption layer in the adsorption material is alkali-washed fly ash loaded on silica gel, the silica gel and zeolite are used as protective layers during adsorption, and the silica gel, zeolite and Arabic gum can effectively protect the magnetic component strontium ferrite in the adsorption material. The adsorption material is high in adsorption efficiency, long in service life, reusable, good in stability, non-toxic and convenient to recycle, has a good adsorption effect on chlorine and fluorine ions, and has a wide market application prospect.

The invention relates to the technical field of food processing, in particular to a powder-coated coating layer capable of prolonging the shelf life of hard candies and a preparation method of the powder-coated coating layer. Comprising the following steps: preparing syrup water, preparing sugar liquid, preparing high-temperature massecuite, preparing blended massecuite, and performing a powder coating process by using the syrup water to obtain the candy containing the powder coating layer. Three raw materials including water, white granulated sugar and Arabic gum are compounded for use, the raw materials are boiled to be fully melted and fused, the mixture is uniformly wrapped on the surface of the formed candy and is blown to be dry through dry cold air, the Arabic gum can form a uniform colloid protection layer to isolate the surface of the candy from air, and the white granulated sugar is taken as a medium through the water, so that the candy has a good taste. After being boiled, the powder is thoroughly fused with Arabic gum, and after being dried, a hard and firm sand return layer which is pink white, namely a powder coating layer is formed. The powder-coated coating layer can play roles in isolating air, preventing moisture absorption and preventing adhesion on the hard candies.

The present invention provides a beverage composition comprising: a) vitamin C; b) a first polysaccharide comprising maltodextrin; c) a second polysaccharide comprising Arabic gum and / or xanthan gum; and d) a beverage product wherein the mass ratio of the first polysaccharide to the second polysaccharide is between 2: 1 and 1: 2. The invention also provides a method for preparing the beverage composition.

The application discloses a kind of phytosphingosine inclusions and its preparation method and application, belong to daily chemical technical field.The phytosphingosine inclusion of the application uses maltodextrin and gum arabic as embedding carrier, and the mass ratio of maltodextrin and gum arabic in embedding carrier is 1:1~3.The phytosphingosine of the application is modified by screening embedding carrier and optimizing embedding process, and the water solubility of the obtained phytosphingosine inclusion is significantly improved, which can increase the addition amount in daily chemical products, improve the skin care effect of moisturizing, repairing skin barrier and anti-aging, etc.The embedding carrier used in the application has good biocompatibility, no skin irritation, high safety;Moreover, the embedding process step is simple, without complex equipment, easy for large-scale industrial production, and the production cost is controllable, with good market application prospect.

The invention discloses a liquid food salty taste enhancer based on hydrophilic colloid and a preparation method thereof, and the method comprises six steps of Arabic gum pretreatment, Arabic gum component primary separation, Arabic gum component secondary separation, freeze drying treatment, glycoprotein-glycan powder preparation and plastic packaging. The obtained salty taste enhancer has a high salty taste enhancing effect, and the purposes of enhancing the salty taste strength, reducing the salt content and balancing the food quality can be achieved only through an extremely small adding amount. According to the application, the Arabic gum is taken as a raw material, the components of the Arabic gum are optimized to regulate and control the salty taste enhancing effect, and a novel high-efficiency and low-dosage salty taste perception accelerant which can be used for healthy low-salt food is provided for people.

The invention discloses essential oil microcapsule powder with high oil loading capacity and a preparation method thereof, and belongs to the technical field of microcapsules, the preparation method comprises the following steps: preparing a gelatin aqueous solution, preparing an Arabic gum aqueous solution, preparing an Arabic gum-starch aqueous solution, preparing a chitosan-tannic acid aqueous solution, preparing an emulsion, and performing primary crosslinking. Performing secondary crosslinking; the essential oil microcapsule powder prepared by the invention not only has high oil loading capacity and low surface oil content, but also has excellent slow release performance, solubility, long-term controlled release performance and flowability, and is uniform in particle size distribution.

The invention relates to the technical field of functional coatings, and particularly discloses a preparation method of a low-temperature self-repairing water-based coating. The method comprises the following steps: preparing a repairing microcapsule which takes dehydrated castor oil as a capsule core and gelatin and Arabic gum as wall materials; preparing a heating microcapsule which takes the composite phase change material as a capsule core and urea resin or melamino-formaldehyde resin as a wall material; and mixing the two microcapsules with a water-based resin emulsion, an auxiliary agent and water according to a specific ratio to prepare the coating. When the coating is damaged at low temperature, the heating microcapsules are broken to release phase change latent heat, the low-temperature fluidity of the repairing agent is remarkably improved, activation energy is provided for curing reaction, the heating microcapsules and a catalyst in the repairing microcapsules cooperatively drive rapid curing, and the problems that in the low-temperature environment, the fluidity of the repairing agent is poor, and the curing reaction is difficult to start are effectively solved. Meanwhile, the microcapsule wall material effectively isolates active substances, so that the coating keeps good storage stability while having excellent low-temperature self-repairing capability.