151results about How to "Easy to absorb moisture" patented technology

The invention discloses a scaling powder for a nickel-plating alloy soft soldering tin wire core and the preparation method of the scaling powder. The weight formula of the scaling powder comprises the following components by weight percent: 60-90% of resin, 0.1-20% of organic acid, 0.1-10% of organic amine, 0.1-20% of metal salt, 0.1-2.0% of active strengthening agent, 0.1-2.0% of surfactant, 0.1-1.0% of corrosion inhibitor and 0.1-1.0% of antioxidant. The scaling powder disclosed by the invention is suitable for producing lead-containing or non-lead solder tin wire containing scaling powder and can be used for automatically welding or manually welding nickel-plate alloy; and when in use, the welding time of the tin wire is short, the wettability is good and the welding residues are few, so that the scaling powder belongs to environment-friendly scaling powder, and the tensile strength of the welding point joint is high and the insulating resistance is large. The tin wire prepared by the invention is very suitable for soft soldering of nickel-plate alloy and is suitable for soft soldering of chromium plating, gold plating, copper and copper alloy.

The invention discloses a polymorphic nitro-compound fertilizer, relating to the technical field of agricultural fertilizers. The polymorphic nitro-compound fertilizer comprises the following raw materials in parts by weight: 30-150 parts of urea, 160-600 parts of nitramine phosphorus, 0-120 parts of ammonium sulfate, 180-250 parts of potassium sulphate, 100-200 parts of monoammonium phosphate and 1-10 parts of medium and micro fertilizers. The polymorphic nitro-compound fertilizer is produced by mixing, granulating and cooling the raw materials. The polymorphic nitro-compound fertilizer adopts scientific proportion, has complete nutrition, can continuously nourish crops at gradient so as to be more beneficial to the full absorption of the vegetable crops, and can remarkably promote the growth and high and stable yield of the crops, thus having strong market competitiveness.

The invention relates to a niacin simvastatin slow-release preparation and a preparation method thereof. The slow-release preparation adopts the form of tablets, wherein a slow-release part of the preparation comprises simvastatin and pharmaceutical excipients, and a quick-release part of the preparation is taken as a coating to wrap a niacin slow-release part. Through a slow release technique, niacin is slowly released so as to reduce the toxic-side effects of the niacin. Meanwhile, after a coating technique is adopted, quick-release coating is performed, the quick-release part is good in 60-minute dissolution; and a slow-release layer forms gel which is released layer by layer and is insensitive to moisture, temperature and the like, so the quick-release coating has no obvious influence on the slow release of the niacin, and the synergy of the niacin and the simvastatin can reach optimum.

The invention belongs to the technical field of textile fabrics and relates to a manufacturing method of hemp/silkworm silk high-count blended knitted fabric. The manufacturing method comprises a line-forming technique and a cloth-forming technique, wherein the line-forming technique comprises the following steps: high-count blended yarn forming, triple singeing treatments, mercerization, degumming, dyeing, silk turning, spooling and the like of the hemp/silkworm silk; and the cloth-forming technique comprises the following steps: card nepremoval, humidifying, weaving, primary singeing treatment, mercerization, softening treatment, sizing, pre-shrinking, batching package and the like. The high-count blended knitted fabric has functions of antibacterium, bacteriostasis and ultraviolet radiation resistance, has good humidity-absorbing and air-permeable performances, high temperature resistance, softness and comfortableness, and can meet different requirements of crowds at all ages and all levels.

A dropping pill for remedying the alimentary tract canker considers extract of American periplaneta ethanol as the active component and is the dropping pill which is prepared by being mixed with a matrix, wherein the total weight of aminophenol which is contained in each dropping pill can not be less than 0.35 percent. The invention also provides the preparation method of the dropping pill and an intestines soluble preparation which contains the dropping pill. The dropping pill of the invention can meet the requirement of large production and at the same time can be prepared as an oral colon positioning preparation, which ensures that the drug can successfully arrive at the position of the colon through the alimentary tract after being orally taken to be released, thus the drug concentration at the position of the colon is improved; the pain of the patient is relieved, and the conformance performance is improved.

The invention belongs to the field of metallurgy, and in particular relates to a method for smelting magnesium through vacuum thermal reduction of precast pellets. The method comprises the steps of: uniformly mixing dolomite, a reducing agent and fluorite by mass, and then adding a binding agent; preparing raw pellets with diameters of 5-20mm by using a disk pelleting machine; calcining the raw pellets under a nitrogen or argon protection atmosphere to obtain calcined cured pellets; and carrying out vacuum thermal reduction for 0.5-2 hours on the calcined cured pellets at a temperature of 1150 DEG C under the vacuum degree of 10 Pa to obtain the magnesium. The method has the advantages of high raw material utilization rate, high reduction rate, short reduction period, low energy consumption and the like; and compared with the traditional ferrosilicon process for smelting the magnesium, the method realizes the technical upgrading of the ferrosilicon process for smelting.

The invention relates to the field of medicines, and discloses an acarbose oral solid preparation composition and a preparation method thereof. The acarbose oral solid preparation composition disclosed by the invention is composed of acarbose, a filler and a lubricant, wherein the powder flowability and compressibility of the acarbose oral solid preparation composition are greatly enhanced, and the prepared solid preparation is lower in moisture absorption and better in stability, and has a good industrial application prospect.

The invention relates to the technical field of modification of thermoplastic high molecular materials, and discloses a degradable PC (Poly Carbonate)/PLA (Poly Lactic Acid) alloy which is applied to the aspects of household appliances, living goods, electronic and electrical equipment and the like. The degradable PC/PLA alloy is prepared from the following materials: PC, PLA, compatilizer, antioxidant, nucleating agent, ester exchange accelerator and processing aid. The invention also discloses a preparation method of the degradable PC/PLA alloy. The invention aims to provide a degradable PC/PLA alloy which can be degraded on the basis of ensuring good comprehensive performance, thereby reducing the pollution to the environment. The invention also aims to provide a preparation method of the degradable PC/PLA alloy.

The invention discloses a heat-insulating fabric, also discloses a preparation method of the fabric, and aims to provide a light, comfortable and warm heat-insulating fabric and a preparation method thereof, belonging to the technical field of spinning. The technical points are as follows: the fabric comprises the following raw materials by mass percent: 33-35% of polyester, 57-61% of viscose fiber and 6-8% of spandex, wherein the polyester and the spandex are blended to serve as the inner layer of the heat-insulating fabric and the viscose fiber and the spandex are blended to serve as the surface layer of the heat-insulating fabric. The preparation method is characterized by alternately arranging a path of viscose fiber and spandex blends and a path of polyester filament yarn and spandexblends to obtain various paths of weft yarns, then adopting a single-side knitting method and different yarn feeding methods for weaving, then carrying out dyeing and finishing and ensuring polyesterto shrink into the inner layer of the fabric and viscose fiber to be on the surface layer of the fabric.

The invention provides a method for preparing a thick type shaving board through waste outdoor heat-treated wood and conventional wood. The thick type shaving board prepared through the method is small in hygroscopicity, stable in size and good in comprehensive mechanical property. According to the method, the waste outdoor heat-treated wood and the conventional wood are crushed into wood shavings respectively, and the two wood shavings are dried until the moisture content is 2%-4%, and then sizing and stirring are conducted; the wood shavings are made into a board blank through mat formation and are formed through hot pressing; when the mat formation is conducted, the wood shavings of the waste outdoor heat-treated wood are paved in a sandwich layer of the board blank, and the wood shavings of the conventional wood are paved in a surface layer of the board blank; in the sizing process, the adhesive is a urea-formaldehyde resin adhesive, or a phenolic resin adhesive, or a isocyanate adhesive; in the hot pressing process, the hot pressing pressure is 2.5-3.5 Mpa, the hot pressing time is 0.2-0.5 min/mm, and if the urea-formaldehyde resin adhesive is used, the hot pressing temperature is 110 DEG C to 160 DEG C; and if the phenolic resin adhesive or the isocyanate adhesive is used, then the hot pressing temperature is 150 DEG C to 200 DEG C.

The invention provides a method for measuring the content of free polysaccharides in A, C, W135 and Y cluster meningococcal polysaccharide combo, wherein the method comprises the following steps: 1) sampling: respectively taking 1ml of a meningococcal polysaccharide combo to be measured and a corresponding derivative solution of the meningococcal polysaccharide combo to be measured as a sample 1 and a sample 3; 2) centrifuging: additionally placing the meningococcal polysaccharide combo and the corresponding derivative solution of the meningococcal polysaccharide combo to be measured in centrifuge tubes; adding a sodium deoxycholate solution into each centrifuge tube, performing ice bath for 30 minutes and adding a hydrochloric acid solution; fully oscillating, centrifuging and collecting the supernatant of each centrifuge tube as a sample 2 and a sample 4; 3) calculating the concentration of the polysaccharides; and 4) calculating the content of the free polysaccharides. The method provided by the invention can measure the content of free polysaccharides in A, C, W135 and Y cluster meningococcal polysaccharide combo accurately and simply, so that the quality of products is evaluated.

The invention provides a fireproof and/or fire-extinguishing microcapsule, a preparation method thereof and an application of the microcapsule. Modified polyisocyanate prepolymers are mixed with fireproof and/or fire-extinguishing materials, mixture is dispersed in water, and polyhydric alcohols and/or polyamines are added into the water to prepare the fireproof and/or fire-extinguishing microcapsule. High molecular polymerization monomers are designed and selected to synthesize the microcapsule with various enhanced physicochemical properties of shell materials, the strength, the flexibilityand the sealing performance of the microcapsule are greatly improved, so that the microcapsule can be directly and independently used as a fire-extinguishing agent, the microcapsule can also be individually used as a main material or functional additive, added into various composite materials and conveniently and directly used for preparing fireproof and/or self-excitation fire-extinguishing materials in various fields of coatings, adhesives, rubber, plastics and the like, and the applicable range and the application field of gas and liquid fire-extinguishing materials and the fireproof and/orfire-extinguishing microcapsule are greatly widened.

The invention provides a soft moisture-absorbing curly short fiber and a preparation method and application thereof. The soft moisture-absorbing curly short fiber comprises, by mass, 10-50% of polyamide 5X and 50-90% of polyester. By means of the preparation method, the soft moisture-absorbing curly short fiber capable of improving the spinning efficiency and increasing the rate of finished products is obtained at a low cost in a simple process.

The invention provides an L-carnitine composition, an L-carnitine preparation and a preparation method and application thereof. The composition can comprise L-carnitine or a salt thereof acceptable pharmaceutically, kreatine, branched-chain amino acid, glutamine and soybean peptide. The composition used for improving tolerance can increase the combustion of fat in a human body, effectively oxidize the fat in the human body and decompose the fat into energy, implements nutrition required by the human body, and improves the athletic ability.

The invention provides a soft moisture-absorbing curly fiber easy to dye and a preparation method thereof. The soft moisture-absorbing curly fiber easy to dye comprises, by mass, 10-50% of polyamide 5X and 50-90% of polyester. By means of the preparation method, the fiber which is easy to dye by acid dyes and disperse dyes at the low temperature can be obtained at a low cost in a simple process.

The invention provides diatomite capable of controlling the humidity absorbing and releasing performance by illumination and a preparation method thereof. The preparation method comprises the following steps: carrying out aminated modification on the diatomite by utilizing a silane coupling agent containing amino groups to obtain diatomite grafted with the amino groups, wherein the used amount ratio of the diatomite to the silane coupling agent is 1kg to 20-100ml; soaking the diatomite grafted with the amino groups in a solution containing spiropyrane molecules, and stirring, wherein the soaking time is 0.5-5 hours and the concentration of spiropyrane in the solution containing spiropyrane molecules is not less than 5%; and filtering the materials, collecting, washing and drying to obtain the diatomite capable of controlling the humidity absorbing and releasing performance by illumination. The diatomite provided by the invention has the advantages that an illumination condition can be used as a switch to control the humidity absorbing and releasing performance, and the maximum humidity absorbing and releasing capabilities can be maintained by more than 80% before modification.

The invention discloses a preparation method of plant tablet candy. The plant tablet candy is made up of 0.5 to 1.5 parts of rose, 0.5 to 1.5 parts of red dates, 0.5 to 1.5 parts of hawthorn, 0.05 to 0.2 part of mulberry, 0.1 to 0.5 part of licorice, 0.1 to 0.5 part of black tea, 0.5 to 1.5 parts of maltodextrin, 2 to 5 parts of white sugar, 0.05 to 0.2 part of magnesium stearate and 0.1 to 0.3 part of hydroxypropyl starch, wherein the rose is pulverized, the aromatic water is collected in advance, and the roses after the filtrate is extracted are extracted together with other ingredients, red dates, and black tea are treated with the microwave extraction process after pulverized. The preparation method can effectively retain the raw materials of their own natural aroma and the original taste, but also to maximize the retention of active ingredients, the prepared plant tablet candy is purely natural without additives, rich in aroma, sweet and sour in taste, full of flavor, unique in flavor, has health effects of beauty, tonifying qi and blood, nourishing spleen and promoting the digestion and others, and is beauty care best-quality goods.

A preparation method for selenium covered basic copper chloride includes the steps of: (a) adding crystalline basic copper chloride (TBCC), water and stabilizer in a reactor; adding sodium hydroxide solution with stirring; reacting to form a hydroxyl-modified crystalline basic copper chloride after discharge, washing, and negative pressure leaching; (b) adding the hydroxyl-modified crystalline basic copper chloride and water in the reactor, adding selenous acid with stirring; adding copper sulfate pentahydrate after reaction; forming selenium covered basic copper chloride comprising crystalline basic copper chloride, basic cuprous selenide, and basic cupric sulfate after discharge, rinsing, negative pressure filtration, and drying. The selenium covered basic copper chloride is used as feed addictives of trace elements having nonhygroscopic property, good liquidity, and stable chemical property. The selenium covered basic copper chloride is easy to incorporate with feed, low price, low cost in adding, weak acidic solubility, easy to absorb.

The application discloses a device and a method for preparing coated powder. The device mainly comprises a plasma torch, an atomizing nozzle, a reactor, a first powder feeder and a second powder feeder. The method for preparing the coating powder comprises the following steps of step S1, generating a heat source plasma; step S2, sending powder particles A into the plasma; step S3, sending powder particles B into a metal jet generated by the powder particles A; and step S4, preparing the coated powder A and B. The coated powder has the characteristics of low oxygen content and impurity content,no foreign pollution, high fluidity and the like, solves the problem of difficulty in feeding fine powder particles in the field of powder metallurgy, solves the problem of uneven hard phase distribution in the field of coating preparation, improves the mechanical properties of molded parts.

The invention belongs to the technical field of fruit tree planting, and discloses a water and fertilizer management method for apples under drought stress. The management method is characterized in that the drought resistance ability of apple trees is improved through the utilization of glycine betaine, fertilization and irrigation. The management method is energy-saving and environment-friendly, has no damage to soil, and can protect soil; the occurrence of diseases and pests can be inhibited to a certain extent, so as to reduce the consumption of chemical fertilizers and pesticides, and achieve edible safety of products; the yield and quality of apples are improved, and the pure flavor of the original variety is preserved.

The invention relates to a chitosan/attapulgite composite material, a preparation method thereof, a degraded transformer oil circulating decolorization system comprising the chitosan/attapulgite composite material, and a decolorization process. The preparation method comprises the following steps: S1, dissolving chitosan to obtain a chitosan solution, and dispersing acidified attapulgite into purewater to obtain an attapulgite suspension; S2, adding glycerol into the chitosan solution, and carrying out uniform stirring to obtain a first solution; S3, adding the attapulgite suspension into thefirst solution under a stirring state to obtain a second mixed solution; and S4, forming the second mixed liquid by freezing, and carrying out vacuum freeze drying to obtain the chitosan/attapulgitecomposite material. The chitosan/attapulgite composite material prepared by the method has a stable structure and excellent decolorization and adsorption effects, and the preparation method is simple.

The invention discloses a low-compressive creep and high temperature-resistant ethylene propylene rubber material and a preparation method thereof, and belongs to the technical field of rubber. The rubber material comprises the following components in parts by weight: 100 parts of raw ethylene propylene rubber, 5 parts of zinc oxide, 1.2 parts of stearic acid, 2 parts of an antiager 445, 4-8 partsof Ative CHO, 45-55 parts of fast extruding carbon black N550, 5-10 parts of a softening and plasticizing agent S2550, 1.5-2.0 parts of a crosslinking auxiliary agent N308E and 6.0-8.0 parts of a vulcanizing agent GF-45. The rubber material has excellent high temperature resistance, has good physical properties after aging at 175 DEG C, has a significant advantage of low compression set, and meets performance requirements of German Volkswagen PV3330 and PV3307 standards on the compression set.