124results about How to "Improve release ability" patented technology

The invention relates to a linear composite gel fragrance controlled-release filter stick and a preparation method and an application thereof. The preparation method comprises the following steps: preparing a mixture solution; preparing composite gel; adding perfume. A fragrant thread made of the conventional cotton thread or synthetic fiber does not need to be taken as a carrier, and a gel thread which is prepared by compounding polyethylene glycol and chitosan sodium carboxymethyl cellulose is used for simulating the conventional fragrant thread, so that the perfume adding amount of the fragrant thread filter stick can be effectively increased, and the perfume adding uniformity, controllability and stability are improved; through the composite gel, fragrant substances can be dispersed uniformly and be released effectively and volatilization can be reduced effectively, and meanwhile the novelty and interestingness of a cigarette filter stick are improved.

The invention provides a method for preparing a hetero-atom doped porous carbon material through carbonation of biomass under the assistance of molten salt. The method comprises the following steps: uniformly mixing biomass powder, the molten salt and a hetero-atom doped compound to obtain a product A, wherein the molten salt contains LiCl and KCl, the mass of LiCl accounts for 59 percent of that of the molten salt, and the mass of KCl accounts for 59 percent of that of the molten salt; putting the product A in a pipe furnace; carrying out high-temperature calcination; cleaning with distilled water to remove the molten salt and obtain the final product, namely the hetero-atom doped porous carbon material. The method has the advantages that the biomass is taken as a raw material, and the molten salt containing hetero-atoms is taken as a carbonization medium, so that the hetero-atoms can be introduced into the skeleton of the carbon material during the pyrolysis and carbonization process of the biomass synchronously and controllably, and the hetero-atom in-situ doped porous carbon material is obtained finally. Compared with the conventional doping method, the method provided by the invention have the advantages that the steps are simple; the cost is low; the operation is easy; the reactant purity is high; the application prospect is relatively good.

A nano-class propolis product used to prepare softgel, capsule or infusion is prepared through stirring the alcohol solution of propolis while adding fused polyethanediol 6000 by water bath at 60-80 deg.C stirring, adding lecithin, stirring, ultrasonic vibration, freeze drying, dissolving it in water, filtering by millipore membrane and evaporating drying or freeze drying.

The invention relates to two kinds of Bactrocera dorsalis imago attractant that is made up from 1-20wt% methyleugenol, 4-20wt% sugar, 10-30wt% alcohol, 10-30wt% vinegar, 30-75wt% water. The attractant has good effect to Bactrocera dorsalis and male adult, especially the male adult. The invention is low cost, easy to operate, and has good persistence.

The invention provides a preparation method for graphitized porous carbon for a supercapacitor. The preparation method comprises a step I of adding activated seaweed carbon to a transition metal salt solution, and uniformly mixing the activated seaweed carbon with the solution to obtain a product A; and a step II of obtaining the final product graphitized porous carbon through filtering, drying, high-temperature roasting and acid-washing of the product A. According to the preparation method provided by the invention, the activated porous carbon is soaked in the metal salt solution, a catalyst precursor is introduced for treatment at high temperature to obtain a graphitized nanometer structure inside the porous carbon. The seaweeds are used as raw materials, loaded with metal nanometer particles and catalyzed at high temperature to obtain the graphitized porous carbon, so that the specific surface area of the porous carbon material is remarkably improved, and good load storage capacity is obtained; and moreover, the graphitized structure is introduced, so that the integral conductivity of the material is greatly improved, and the material still has good energy storage and release ability under high current density.

The invention belongs to the field of crop fertilizer and particularly relates to compound fertilizer synergist modified by oxidized graphene and a preparation method of the compound fertilizer synergist. The compound fertilizer synergist is prepared from, by weight, 70-80 parts of forestry and agricultural residues, 10-20 parts of a modifying agent, 0.5-1 part of a catalyst, 1-5 parts of stabilizer, 5-10 parts of cyclodextrin and 0.3-0.5 part of the oxidized graphene. The preparation method includes the steps that plasma illumination is utilized to conduct bombardment on the surfaces of forestry and agricultural residues, hydroxide radicals, carbanyl groups, carboxyl and other functional groups containing oxygen are introduced into the surfaces of the forestry and agricultural residues, then polymerization with water-soluble polymer modifier occurs under the action of high-field-intensity ultrasound waves, stable nanometer gel particles of three-dimensional network structures are formed, after modification with the oxidized graphene and cyclodextrin is completed, high adsorption, complexing power and a water-retaining property are achieved, nutrient elements in soil can be subjected to complexing, losing of fertilizer nutrients is reduced, the water retention and fertilizer retention performance of soil is improved, and the utilization rate of compound fertilizer can be remarkably raised. The compound fertilizer synergist has the advantages of being environmentally friendly, free of pollution, capable of raising the utilization rate of fertilizer and improving soil environment and the like.

The invention relates to a bowel-relaxing cataplasm and its preparing process, which is mainly prepared from rhubarb horsetails 27-35%, fruit of citron or trifoliate orange 8-12%, magnolia bark 8-12 parts, banksia rose 8-12%, areca-nut 8-12%, Chinese angelica root 8-12%, astragalus root 8-12%, and fevervine 8-12%.

The invention provides an immunodetection kit. The immunodetection kit comprises 1) a conjugate carrier and 2) an immunochromatography test strip, wherein the conjugate carrier comprises a ligand, a marker and a solid-phase carrier, the ligand is used for generating specificity reaction with a to-be-measured analysis substance, the marker is used for signal detection, the ligand is connected withthe marker, and the solid-phase carrier is used for bearing the ligand and the marker, the conjugate carrier and the immunochromatography test strip are separately arranged. The kit can be stored andtransported under a room temperature and also has the characteristics of favorable accuracy, and the operation method is simple and rapid and is suitable for immediate detection. During measurement ofthe kit, a sample solution and the conjugate carrier are uniformly mixed and then are added into the immunochromatography test strip for detection, and a conjugate is more fully released. The kit isconvenient and rapid to fabricate, is low in manufacturing cost and can be compatible with existing assembly line equipment very well, and complicated process and high-cost equipment are not needed.

The invention relates to a preparation method of a chitosan-based slow-release flavor type nano composite micro-capsule coating material. Chitosan shows relatively good application prospects in the field of functional coatings and in the field of coating finishing, but has relatively less application research in leather finishing materials. The preparation method comprises the following steps: preparing a weak acid solution, adding chitosan powder, performing ultrasonic treatment, and stirring to obtain a chitosan dissolved solution; dissolving an amphiphilic copolymer micelle F127 into an organic solvent to form a uniform and transparent solution, adding a nano-particle precursor and essence molecules, and performing ultrasonic treatment to obtain a mixed solution; and injecting the mixed solution into the chitosan dissolved solution by adopting a micro-injector, continuously stirring, and drying the organic solvent by virtue of evaporation to obtain the chitosan-based slow-release flavor type nano composite micro-capsule coating material. A micro capsule prepared by using the method disclosed by the invention is stable in structure and regular in size, has certain film-forming properties and essence coating and control release properties, and has relatively good application potential in the fields of functional leathers, textiles and related coating materials.

The invention discloses a multilayer hollow casein-based submicrometer composite microcapsule. The microcapsule has a three-layer hollow structure with the particle size of 0.5-1.0mu m, an organic phase and an inorganic phase are distributed at an interval, wherein a core layer is amphiphilic copolymer micelle, a middle layer is nanoparticles, a case layer is casein, and the diameter of the hollow cavity is 0.2-0.3mu m; a preparation method comprises the following steps: dissolving casein into an alkaline solution to obtain a casein dissolution solution, then dissolving the amphiphilic copolymer micelle into an organic solvent, adding a nanoparticle precursor to obtain a mixed solution, finally injecting the casein dissolution solution into the high-speed stirring casein dissolution solution, and reacting to obtain the multilayer hollow casein-based submicrometer composite microcapsule. The prepared microcapsule has better biocompatibility, size regularity and larger cavity structure, stronger cladding and controlled-release action to activated substances, and certain film forming performance, thus being capable of obtaining casein-based composite microcapsule emulsion, and having better application potential on the aspect of a biocompatible functional coating material.

Stable blend compositions composed of mixtures of polysiloxane(s) and organic polymer(s) are claimed. These polymer blends are white and opaque indicating the presence of phase separation on the micron scale. Such blends can be stored for long periods of time (years) without exhibiting evidence of macroscopic phase separation. These stable blends are achieved without substantial crosslinking as evidenced by the fact that the polymer blend is readily dissolved in a suitable organic solvent for molecular weight characterization. The stable blends of the present invention have particular utility as fouling release coatings for marine applications.

The invention provides an environment protective mildewproof piece and a preparation method thereof; the mildewproof piece comprises raw materials in the following weight percent: 25 percent to 50 percent of plastics, 15 percent to 40 percent of filler, 25 percent to 45 percent of wax and 2 percent to 10 percent of chlorine dioxide; the preparation steps are as follows: the raw materials are fully mixed, evenly stirred, put into an extruder to be heated and extruded into sheets after being melted; the environment protective mildewproof piece has small size, can be widely applied in products, such as food, garment, shoes and leather, has the advantages of sterilization, bacteriostasis, mildewproof, etc., is long-lasting, has strong release performance, is convenient in use and has no pollution to the environment.

The invention discloses phytosterol nano-emulsion capable of losing weight and lowering lipid and a preparation method of the phytosterol nano-emulsion. The phytosterol nano-emulsion is prepared fromthe following raw materials in percentage by mass: 0.5 to 4 percent of phytosterol, 5 to 25 percent of nutritional oil, 5 to 15 percent of an emulsifier, 0.1 to 0.6 percent of an antioxidant, 0.1 to 0.5 percent of an inorganic additive and the balance of water which is aaded until the content is 100 percent. According to the phytosterol nano-emulsion disclosed by the invention, the ratio of threetypes of phytosterols are reasonably adjusted, and 4-demethlyate sterol and 4,4'-dimethyl sterol have a sufficient synergetic effect to alleviate the obesity; meanwhile, a cholesterol lowering effectand a mechanism of adjusting an endogenous cannabinoids system are used simultaneously to realize the effect of cooperatively lowering the lipid. The phytosterol nano-emulsion prepared by the invention can be directly applied to functional foods, medicines and the like; the dosage of lipid-lowering Western medicines is reduced and the lipid-lowering effect is remarkable; other complications can beobviously alleviated or eliminated.

The invention provides a phase change filter rod additive and its preparation method and an application, and belongs to the technical field of a filter insert in a filter nozzle. The phase change filter rod additive can ensure the uniformity of fragrance release, eliminate difference of cigarette taste, improve stability, and enlarge the using scale of the fragrant matter on the basis of ensuringthe fragrance retention ability of the filter rod. The additive comprises fragrant ingredients, embedding materials coated with the fragrant ingredients and a phase change matter. The preparation method includes steps of preparation of fragrant ingredients, embedding of fragrant ingredients, mixing and emulsification, and others. The phase change filter rod additive can keep solid phase under roomtemperature and improve the fragrance retention ability; in smoking, the additive is changed to be liquid phase under the smoke temperature; by matching with the effect of beta-cyclodextrin molecule,the continuity of essence release is improved, the continuity and uniformity of the cigarette fragrance is guaranteed; the filter road additive also can avoid collapse and softening of the filter rodand accordingly enlarge the scale of the essence for the filter rod.

Belonging to the fields of preparation technologies and immune application of herbal veterinary drugs, the invention relates to a glycyrrhetinic acid nano-liposome for improving the immune function of livestock and poultry and its preparation method. A film dispersion technique is employed to prepare the glycyrrhetinic acid nano-liposome. With the encapsulation rate as an index, a response surface technique is adopted to study the following 3 factors: a lipid-drug ratio, a film material ratio and a water bath temperature, and preferable selection is conducted to determine the optimal preparation conditions as: a lipid-drug ratio of 9.0:1, a film material ratio of 2.5:1, and a water bath temperature of 31DEG C. The obtained glycyrrhetinic acid nano-liposome has a high encapsulation rate and strong immunoenhancement activity. The glycyrrhetinic acid nano-liposome provided in the invention significantly enhances the immunoenhancement activity of glycyrrhetinic acid.

The invention discloses anion decoration paper. The anion decoration paper comprises impregnated paper, and also comprises an anion concentrated solution, wherein the anion concentrated solution is uniformly smeared on the surface of the impregnated paper, the anion concentrated solution is prepared from the following components by volume percent: 30 to 70 percent of distilled water, 20 to 50 percent of transparent water-soluble anion powder, 5 to 15 percent of water-soluble transparent resin glue and 2 to 8 percent of volatile aid, and the sum of volume percent of all components of the aniondecoration paper is 100 percent. The invention also discloses an anion plate using the anion decoration paper. The anion plate comprises the anion decoration paper, and also comprises a base materiallayer, wherein the anion decoration paper is laid above the base material layer, and the base material layer is closely connected with the anion decoration paper. The anion decoration paper disclosedby the invention is simple in structure, high in anion release capacity and convenient to produce and manufacture; and the anion plate utilizes the anion decoration paper, and also has the advantagesof high air purification capacity convenience in production and manufacturing, and the like.

An active overvoltage protection gap with a plug-and-pull functions in a gas environment, comprises a cavity with an air pressure of 10<0> to 10<3> or 10<4> to 5 * 10<5> Pa, An upper electrode is arrange in that cavity, a discharge gap formed between the annular intermediate electrodes, a disk-shaped trigger electrode is mounted in the cavity, Between that trig electrode and the intermediate electrode, an annular insulating dielectric material is arrange, a surface flashover discharge interface is for between that trigger electrode, the surface insulating dielectric material and the intermediate electrode to form an active overvoltage protection gap, and the surface flashover discharge interface is perpendicular to or at an acute angle with the low surface of the intermediate electrode, and a shielding cover is arranged in an upper insulating shell around the upper electrode and the intermediate electrode. The upper electrode, the middle electrode and the trigger electrode all extend out of the plug for external electrical connection. The invention can reduce the pulse breakdown voltage of the overvoltage protection gap, and has the characteristics of extremely fast response, strong power frequency freewheeling suppression ability and longer service life.

The invention relates to a closestool high in strength and low in weight and a preparation method thereof. A green body of the closestool comprises 24-29 parts of illite, 12-16 parts of potassium feldspar, 18-23 parts of montmorillonite, 20-28 parts of clay, 13-15 parts of sodalite, 7-11 parts of rutile, 21-27 parts of halloysite, 17-20 parts of allophane, 5-7 parts of barium carbonate, 2-4 parts of johnstonotite, 9-13 parts of calcined kieselguhr, 5-9 parts of glauconite, 6-10 parts of rectorite and 1-3 parts of addition agents; Glaze materials are composed of 6-13 parts of feldspar, 7-12 parts of kaolin, 3-9 parts of germanite, 12-17 parts of vermiculite, 11-15 parts of talcum, 4-8 parts of tourmaline powder and 3-5 parts of nano-silver-powder. The closestool high in strength and low in weight is low in weight, high in strength, low in water absorption and capable of releasing anions and resisting against bacteria.

The invention discloses a multi-targeting antitumor composite preparation and a preparation method thereof. The multi-targeting antitumor composite preparation comprises a Fu vesicle suspension, DOX-BSA and FA-DOX. A vesicle administration system is prepared through integrating immunotherapy, positive targeting chemotherapy medicine drug molecules and a passive targeting administration system realize in order to realize low toxicity and high efficiency treatment of tumors, and the vesicle administration system can obviously slowly release Fu to effectively containment tumor development and has small influences on tumor bearing bodies; a newly synthesized immunogen can obtain an antibody with high sensitivity, so foundation is laid for formation of an immune compound macromolecule required by immunotherapy; and the micro-molecular compound FA-DOX has a molecule bridging effect in immunotherapy to promote formation of the immune compound macromolecule. The composite preparation has obviously better curative effects than simple particle administration chemical treatment or simple immunotherapy, has obviously low toxicity, can improve the antitumor effect, and is an anticancer composite preparation with wide research and application prospect.

The invention relates to the technical field of slow-release fertilizer, in particular to a slow-release fertilizer coating material containing terephthalic polyester polyol and a preparation process thereof. The preparation process is characterized in that prepared slow-release fertilizer comprises fertilizer particles and the coating material, the fertilizer particles account for 95%-97.5% of the mass of the slow-release fertilizer, and the coating material accounts for 2.5%-5% of the mass of the slow-release fertilizer; the coating material comprises a component A and a component B, the component A accounts for 50%-60%, the component B accounts for 40%-50% of the weight of the coating material, the component A is polyester polyol which is the terephthalic polyester polyol or a composition of the terephthalic polyester polyol and castor oil, and the component B is isocyanate. The prepared slow-release fertilizer has high abrasion resistance, slow release performance and tenacity; a solvent-free coating technology is adopted in the production process, so that the production cost is low, and production efficiency is high; meanwhile, solvent wasting in the recovery process is avoided, and the slow-release fertilizer has certain biodegradability.

The invention belongs to the technical field of sewage treatment materials and preparation thereof and discloses an in-situ repairing material of bottom mud of a black and odorous water body and a preparation method of the in-situ repairing material. The material is prepared from various raw materials which have good nitrogen and phosphorus removal effects, very good slow release functions and inaddition are rich in source. By improving living environments of microorganisms of the bottom mud, increasing the decomposition speeds of the microorganisms upon organic matters in the bottom mud andimproving the nitrogen and phosphorus removal effects, amount reduction of the bottom mud can be promoted; and in addition, phosphorus in the bottom mud can be effectively immobilized through phosphorus immobilization components in the various raw materials, the phosphorus can be prevented from being released into the water body again, and effects that endogenous pollution is effectively reduced,degradation of pollutants of the bottom mud is accelerated, the amount of sludge of the black and odorous water body is reduced, situations of the water body areimproved, and the treatment effects arelong-lasting can be achieved. The preparation method is simple and rapid in operation process, small in number of equipment for operation, low in requirement on operators, low in cost and applicableto industrial production and popularization, and consumption of labor resources, material resources and economic resources can be effectively reduced.

The invention provides a seedling strengthening agent for rice seedling culture and a use method thereof. The seedling strengthening agent is prepared from the following raw materials in percentage by weight: 45 to 55% of nutrient agent, 8 to 12% of acid regulator, 0.5 to 1.2% of sterilizing and disinfecting agent, and the balance of turfy soil, wherein the nutrient agent is prepared by mixing ammonium sulfate, urea, monopotassium phosphate, potassium humate, calcium magnesium phosphate fertilizer, silicon fertilizer, zinc sulfate, and ammonium ferrous sulfate according to a mass ratio of 1:(0.1 to 0.3):(0.05 to 0.1):(0.2 to 0.4):(0.2 to 0.3):(0.1 to 0.2):(0.02 to 0.06):(0.01 to 0.03); the acid regulator is prepared by mixing concentrated sulfuric acid and natural material with high acid maintaining property; the sterilizing and disinfecting agent is prepared by mixing 10% fubol wettable powder and potassium permanganate according to a mass ratio of 1:(0.2 to 0.7); the natural material with high acid maintaining property is selected from one of straw biomass carbon, expanded vermiculite, and diatomite tailings. The use method comprises the following steps of mixing seedling bed soil and the seedling strengthening agent, primarily adjusting, and slightly adjusting according to the pH (potential of hydrogen) value of the primarily adjusted bed soil. The seedling strengthening agent for rice seedling culture has the advantages that the excellent seedling strengthening, root promoting, greening and disease-resisting functions are realized, the acid stability is higher, and the easiness in recovery of the pH value is avoided.

The invention discloses a persulfate gel slow-release agent. A gelatin-silica sol composite gel system is used as a coating material, persulfate is used as an inner core, and the persulfate gel slow-release agent comprises the following components in percentage by mass: 20%-40% of alkaline silica sol, 1.25%-5% of an oxidizing agent, 2%-15% of gelatin, 0.2%-1% of a cross-linking agent and 0.1%-1%of an emulsifying agent, wherein the volume ratio of gelatin to alkaline silica sol is 1: (3-6). The invention also discloses a preparation method of the persulfate gel slow-release agent and application of the persulfate gel slow-release agent in degradation of organic pollutants in underground water. According to the invention, the low-viscosity liquid can be directly injected into the aquifer,and a gel state with a slow release function is gradually formed in the migration process of the aquifer, so that persulfate is continuously released to repair organic pollutants in underground water.

The invention provides a method for preparing mask base materials. The method includes steps of acquiring coconut water, adding xylan and pectin into the coconut water, carrying out pasteurization, then inoculating acetobacter xylinum into the coconut water, cultivating the acetobacter xylinum until fibrous membranes with the thicknesses of 0.1-0.5 cm are formed on the surface of fermentation liquor, adding cellulase into the fibrous membranes, treating the fibrous membranes, then carrying out ultrasonic treatment on the fibrous membranes in sodium hydroxide solution, washing the fibrous membranes by the aid of clear water until the fibrous membranes are neutral, slicing the fibrous membranes and then carrying out freeze drying on the fibrous membranes to obtain cellulose substrates; acquiring streptococcus zooepidemicus fermentation liquor containing hyaluronic acid, centrifugally removing precipitates, adding supernate into albumen powder, uniformly mixing the supernate and the albumen powder with each other to obtain mixtures, then adding the cellulose substrates into the mixtures, carrying out ultrasonic treatment, taking out the cellulose substrates after ultrasonic treatment is completely carried out, thorough flushing the mixtures by the aid of clear water, carrying out freeze drying on the mixtures and then packaging the mixtures under vacuum conditions to obtain the mask base materials. The method has the advantages that the mask base materials prepared by the aid of the method are excellent in human skin compatibility, free of skin irritation and suitable for various skin types; the mask base materials contain abundant hyaluronic acid, the hyaluronic acid is uniformly distributed, excellent slow-release effects can be realized, the mask base materials are long in skin retention time and are nutritional, and moisture can be preserved.

The invention relates to a fertilizer applicator and a fertilizer suitable for being used by the fertilizer applicator. The fertilizer applicator (1) can be divided into a fertilizer water flow guide pipe (1a), a fertilizer cavity (1b) and a cover (1c) from one end inserted into the soil; the fertilizer water flow guide pipe (1a) is a hollow pipe; the lower end (1a1) of the pipe (1a) is provided a through hole (1a1a); the upper end (1a2) of the pipe (1a) is connected and communicated with the fertilizer cavity (1b); a material (1d) capable of absorbing water and guiding water is contained in the fertilizer water flow guide pipe (1a); a structure (1e) capable of being used for regulating the fertilizer water flow guide quantity and a soil EC meter (1f) are also arranged on the fertilizer applicator. The fertilizer applicator has the advantages that the controllability on the fertilizer release speed to a certain degree is realized; the speed is adjustable according to the requirements; the slow release effect on the fertilizer is high; the continuous fertilizer supply to the plants can be realized; the fertilizer application labors can be reduced; various kinds of fertilizer damage due to improper fertilizer application can be effectively avoided; the fertilizer loss can be obviously reduced; the structure of the fertilizer applicator is simple; the use is convenient; no pollution is caused; the cost is low.

The invention relates to the field of energy conservation and emission reduction and discloses a full automatic water-saving device for a bathroom accessory, which is a water-saving apparatus for purifying and utilizing waste water in a full automatic form and supplementing tap water to flush a urinal. The device comprises a water storage tank and is characterized in that a piston is arranged in the water storage tank to form a piston chamber; a plurality of one-way valves are arranged on the piston; water in the upper part of the water storage tank enters the piston chamber by the one-way valves; the bottom of the piston is provided with a pull-down component for pulling the piston down; a tensile force system and a switching system are arranged on the water storage tank and can be used for controlling the piston to move upwards and switching water; the middle part of the water storage tank is provided with a filter system; the bottom of the water storage tank is provided with a water outlet connected with a water outlet pipe; the water outlet pipe and the switching system are communicated with a urinal water tank; and a pressure release type switch of the tensile force system is stuck to a water outlet button of the urinal water tank. When the urinal is flushed as usual, full automatic water inlet and stop are realized only by pressing the press release type switch once. The full automatic water-saving device for the bathroom accessory, provided by the invention, is remarkable in energy-saving effect, convenient to use, excellent in effect, easy to install and overlong in service life.

The invention relates to the field of genetic engineering and in particular relates to a basic fibroblast growth factor (bFGF) specifically bound with chitin as well as a coding gene, a preparation method and application thereof. The bFGF specifically bound with chitin comprises an amino acid sequence shown in SEQ ID NO:1 and an amino acid sequence shown in SEQ ID NO:2. The bFGF can be specifically bound with chitin and the bonding capacity is far higher than that of the bFGF; therefore the slow-release effects are also stronger than the slow-release effects of the bFGF. In vivo experiments verify that the bFGF specifically bound with chitin has similar biological activity of promoting cell proliferation to the natural bFGF.

The invention relates to the technical field of cosmetic preparation, and discloses application of a clove extract to preparation of cosmetics. The addition amount of the clove extract in the cosmetics is 1-5% (w / w), and the clove extract is added in a form of slow-release particles. An extraction method of the clove extract comprises the steps that clove powder and a solvent are mixed, ultrasonicassisted extraction is conducted under the water bath heating condition, then incubation is conducted at 130-160 rpm and at 37 DEG C for 20-30 hours, filtration is conducted, and after the solvent isremoved by rotary evaporation, the clove extract is finally obtained. The clove extract is added into the cosmetics, and thus the situation that the cosmetics go bad due to microbial pollution can beeffectively prevented; the clove extract has an antifungal effect, and the cosmetics with added eugenol can alleviate skin problems through the effect; and in addition, the clove extract further hasa certain anti-oxidation function, so that the cosmetics have the anti-oxidation and anti-aging functions.

The invention provides a tannin microsphere slow release formaldehyde capture agent and a preparation method thereof. The method comprises the following steps of: dissolving chitosan in an acetic acidsolution, stirring at room temperature until the solution is clear and transparent, and dissolving tannin in distilled water, stirring at room temperature until the solution is clear and transparent;mixing the two to form a suspension to obtain a water phase solution; preparing an oil phase solution; mixing the water phase solution and the oil phase solution, stirring at 800-1400 rpm and 40-60 DEG C for 180-300 min to form emulsion, and cooling to room temperature; washing the precipitate by using acetone and finally placing the product in a drying oven and drying the product into powder. The formaldehyde capture agent has the advantages of good microcapsule structure stability, high tannin coating rate and capability of releasing tannin to capture formaldehyde for a long time.

The invention discloses a reactive organic silicon release agent and a preparation method thereof, and belongs to the field of functional additives of high polymer materials. The reactive organic silicon release agent is prepared from sulfydryl polysiloxane, vinyl polysilsesquioxane, an organic solvent, an initiator and the like, and is suitable for medium and high temperature forming processes of composite materials. According to the release agent, in the composite material forming process, polysiloxane is subjected to a cross-linking reaction, and a complete, uniform and high-strength release layer is formed. The release agent is high in release capacity, resistant to abrasion, free of corrosion to a mold and free of influence on the subsequent painting or electroplating procedure of a product.