558results about How to "The ratio is scientific and reasonable" patented technology

The invention relates to a feed for early weaned piglets, which belongs to the field of the feed. Main ingredients of the feed comprise expanded corn, full-fat soybean, fat powder, steam fish meal, acidified whey powder, fermented soybean meal, a complex enzyme preparation, a micro-ecological preparation, amino acids, complex vitamins, complex trace elements and the like. The digestive physiological characteristics of the weaned piglets are fully considered on the selection and the processing of raw materials, thereby greatly improving the palatability and the digestion rate of the feed; simultaneously, through the synergistic compatibility of an egg yolk antibody, lactein, sodium humate and the complex micro-ecological preparation, the diarrhea rate of the weaned piglets is reduced, the effects are superior to those of adding antibiotics into the feed, and the feed is the green, environmentally-friendly and nuisanceless feed. An animal feeding experiment proves that the feeding effects are ideal, the palatability is good, the piglets after weaning are high in average feed intake, fast in daily weight gain and low in diarrhea rate, and the feed has a good promoting effect for growth and health conditions of the weaned piglets and can meet the demands of most of raisers at present.

A polyurethane caulking material for expansion joints of a ballastless track of a high speed railway is disclosed. The caulking material is prepared from two parts A and B. the part A is composed of the following raw materials, by weight, 100 parts of isocyanate and its prepolymer, 10-150 parts of a plasticizer, 5-150 parts of a solid filler, 1-20 parts of a diluents, 1-5 parts of an adhesion promoter, 0-10 parts of a thixotropic agent and 1-3 parts of a water-removal agent. The part B is composed of the following raw materials, by weight, 10-20 parts of modified polyhydric alcohol, 1-5 parts of a diluent, 2-30 parts of a plasticizer, 5-30 parts of a solid filler, 0-5 parts of a thixotropic agent, 0.5-2 parts of an antifoaming agent, 0.1-1 part of an anti-aging agent and 0-0.01 part of a catalyst. The mass ratio of the part A to the part B is 4:1-10:1. The polyurethane caulking material has advantages of good low-temperature curing performance, high displacement capability, low tensile modulus, good bond property and excellent endurance quality and fatigue resistance, and is suitable for expansion joints of a ballastless track of a high speed railway as well as expansion joints of roads and airfield runways.

The invention discloses a biological non-antibiotic complete feed for piglets and a preparation method thereof, and belongs to the technical field of animal feed. The invention solves the defects that current piglet feed rich in antibiotics destroys the intestine colony balance of piglets and reduces the piglet immunity. The feed comprises main ingredients of corn, extruded corn flour, dehulled soybean meal, wheat bran, degreased rice bran meal, peanut meal, germ meal and corn alcohol lees. The preparation method is as below: first fully stirring to mix stone powder, calcium hydrogen phosphate and salt into an additive semi-finished product, then adding corn and extruded corn powder, spraying oil for stirring granulation, so as to obtain biological non-antibiotic complete feed for piglets. The feed provided by the invention is mainly used for the piglets with yet incompletely developed immune system.

The invention discloses a method for preparing fine-grain silicon carbide ceramic through reaction sintering. The method sequentially comprises the following steps: preparing a main material comprising 75-90wt% of silicon carbide micro-powder and 10-15wt% of active carbon powder; adding a dispersant and deionized water to the main material, sequentially adding an aqueous solution of organic matters containing high temperature carbon residue and a water-soluble polymer binder solution, and stirring and mixing above materials in a ball mill to prepare a uniformly-dispersed water-based silicon carbide slip; and sequentially carrying out spray granulation, dry press molding, dewaxing, vehicle working, high temperature siliconising sintering and alkali treatment desilication to obtain the silicon carbide ceramic.

The invention discloses an aqueous PU velvet resin used for synthetic leather, which comprises the following raw materials by weight percent: 40-50% of aqueous polyurethane resin, 40-50% of water, 2-5% of low-temperature sheep bar powder, 2-4% of silicon dioxide velvet powder, 1-3% of organic silicone oil smoothing agent, 1-4% of extinction powder, 0.5-1% of organic silicon flatting agent, 2-5% of organic silicon antifoaming agent and 0.5-2% of aqueous polyurethane thickening agent. The aqueous PU velvet resin used for synthetic leather of the invention takes water as solvent to replace toxic solvent, such as dimethyl fomamide, butanone and the like and has the advantages of being non-combustible, safe and environment-friendly, saving cost and the like. The aqueous PU velvet resin also has the advantages of good film-forming resistance, firm bonding, coating solvent resistance, cold resistance, hydrolysis resistance and heat-proof aging. Products fabricated by using the resin have the characteristics of plump feel, unique velvet effect, strong real leather quality, fine and smooth texture, good air permeability and the like.

The invention belongs to the technical field of polymer flame retardants and in particular relates to a two-dimensional nano-filler synergistic flame retardant as well as a preparation method and application thereof. The synergistic flame retardant is prepared from the following components in parts by mass: 100 parts of flame retardant, 2 to 500 parts of two-dimensional nano-filler, 5 to 500 partsof plant polyphenol and 1 to 100 parts of polyvalent metal salt. The preparation method of the synergistic flame retardant comprises the following steps: firstly, carrying out multi-coordination complexing reaction on the plant polyphenol and polyvalent metal ions to clad the flame retardant and the two-dimensional nano-filler respectively; then, loading the flame retardant to the surface of thetwo-dimensional nano-filler by utilizing the complexing reaction. According to the two-dimensional nano-filler synergistic flame retardant, the raw materials have a scientific and reasonable ratio anda preparation technology is simple, the raw materials are convenient to operate and low in cost; the prepared synergistic flame retardant has good dispersity and high flame-retarding efficiency; thesynergistic flame retardant is added into a polymer matrix through a solution blending, emulsion blending or melt-blending method; a high-performance flame-retarding polymer composite material with excellent flame-retarding performance, mechanical performance and the like can be prepared and is widely applied.

The invention discloses an acid-proof cathode electrophoretic paint as well as a preparation method and an application method. The electrophoretic paint comprises emulsion and color paste, wherein the emulsion is prepared by steps of mixing amine modified epoxy resin, a totally-closed isocyanate cross-linking agent and an emulsifying agent, uniformly stirring at the temperature of 43 DEG C to 47 DEG C, adding formic acid at the temperature of 45 DEG C to 49 DEG C to perform an acidification reaction for more than 70 minutes, subsequently adding deionized water, uniformly stirring and then filtering. The color paste is prepared by the steps of mixing quaternary ammonium dispersion resin, deionized water, dibutyl tin oxide, kaolin, carbon black, an emulsifying agent, rutile titanium dioxide and titanium-based nanometer paste, uniformly stirring at the temperature not higher than 30 DEG C, grinding the mixture at the temperature not higher than 35 DEG C by use of a grinder until the fineness is not larger than 15 microns, uniformly stirring and filtering. An application process comprises batching, preparation of a tank and an electrophoretic coating process; the preparation of the tank comprises steps of mixing 10-15 parts by weight of the color paste, 35-40 parts by weight of the emulsion and 50-75 parts by weight of the deionized water, and curing for 48-50 hours at the temperature of 28-30 DEG C; and the electrophoretic coating process comprises a step of performing electrophoresis to a to-be-coated element for 3-4 minutes under the voltage of 200V.

The invention provides a foaming-free fast-curing high-strength leak-stopping waterproof polyurethane grouting material. The material is composed of a component A and a component B, wherein the component A comprises isocyanate monomer, isocyanate prepolymer and highly-hydrophobic environment-friendly plasticizer, the component B comprises high-activity polyether polyol, chain-extending cross-linking agent, highly-hydrophobic environment-friendly plasticizer and antioxidant, and a volume ratio of the component A to the component B is 1: 1. The leak-stopping waterproof polyurethane grouting material has low viscosity, is convenient to grout, has the characteristics of no foaming and fast curing and the advantages of good leak-stopping effect, high mechanical strength and wet bonding strength and excellent aging resistance, and is applicable to rapid leak stopping, water prevention and reinforcement of distress in concrete of an underground construction.

The invention discloses an irradiation resistant non-halogen low smoke flame-retardant sheathing material applied to nuclear power stations and a preparation method. The raw materials comprises ethane-vinyl acetate rubber, maleic anhydride stem grafting ethane-vinyl acetate rubber, magnesium hydroxide fire retardant, organic silicon fire retardant, nano cerium oxide, FEF, zinc stearate, stearic acid, vinyl trisilane, Aflux A-16, Aflux A-25, polycarbonate diimine(PCD-50), 2, 2, 4-trimethyl-1, 2-dihydride quinoline, antiager DDA, di-tert-butyl peroxide cumene, triene propylcyanide uric acid ester and decanedioic acid dioctyl, which are heated and mixed to obtain the materials of the invention. The invention features scientific and reasonable formula and proportion, and the process is advanced. The sheathing material features fine irradiation resistance, excellent mechanical properties and long service life, thus being a good irradiation resistant non-halogen low smoke and flame-retardant sheathing material applied to nuclear power stations.

The invention discloses lead-free low-melting sealing glass and a preparation method thereof. The glass comprises the following raw materials in percentage by mol: 20 to 55 percent of P2O5, 5 to 30 percent of TeO2, 0 to 55 percent of ZnO and additives with the content not more than 30 percent of that of total compositions of the glass. The lead-free low-melting sealing glass has the advantages that the compositions and composition proportioning of the glass are scientific and reasonable, and the compositions do not contain lead which pollutes the environment or poisons human body; meanwhile, the glass is environment-friendly and low toxic and has wide softening temperature and thermal expansion coefficient ranges; therefore, the glass can be used in low-temperature packaging among different electronic components. Moreover, the simple and reasonable preparation method has strong operability and high qualified rate of finished products and is suitable for continuous large-scale industrialized production.

The invention discloses feed additive for improving cad pig growth performance and mixed batch. The feed additive comprises following ingredients by parts of weight: 23 to 25 of pericarpium citri reticulatae, 23 to 26 of hawthorn, 27 to 35 malt, 4 to 8 Chinese rhubarb, 15 to 23 Chinese yam, 0.001 to 0,002 Vb12, 9 to 11 chelate iron and 80 to 120 sodium butyrate. The additive is scientific and reasonable in proportion, can improve cad pig growth performance, improves feed conversion and increases hemoglobin content in blood. Fermented soybean meal containing active small peptide can be absorbed and utilized by intestinal tracts easily. The Chinese herb medicine mainly has the function of regulating qi, tonifying spleen and nourishing the stomach. The sodium butyrate can repair small intestine choria of pigs, increases recess depth, reduces potential of hydrogen (pH) in intestinal tracts and prevents harmful bacteria from breeding.

The invention discloses water-soluble PU nubuck low-temperature foamex for synthetic leather, prepared by the following raw materials in percentage by weight: 30-40 percent of water-soluble polyurethane, 40-50 percent of water, 2-10 percent of low-temperature nubuck foam powder, 2-5 percent of organosilicon levelling agent, 2-5 percent of organosilicon antifoaming agent and 0.5-2 percent of water-soluble polyurethane thickener. The mixture ratio of each component of the water-soluble PU nubuck low-temperature foamex for synthetic leather is scientific and reasonable, and the components mutually coordinate and jointly act. The nubuck low-temperature foamex has the advantages of good film reforming property and firm adhesion, and coating is resistant to solvent, cold, hydrolysis and thermalageing. The original effect of the leather surface of a finished product prepared from the water-soluble PU nubuck low-temperature foamex can not be influenced; after the leather surface is treated bythe foamex, low-temperature foaming is carried out to produce nubuck leather, and therefore, the effect of the leather surface is unique; moreover, the synthetic leather has exquisite texture, good air permeability and excellent resultant effect of hand feeling, water proofing, adhesion and the like.

The invention relates to a method for preparing dairy cow feed by microbial fermentation, which comprises the following steps of: performing primary culturing on yeast and aspergillus niger, mixing, and performing secondary culturing; fermenting a feed substrate according to a specific ratio, wherein the substrate is prepared by mixing 1 to 3 weight parts of bean pulp, 8 to 10 weight parts of cotton dregs, 6 to 15 weight parts of alcohol meal, 7.5 to 15 weight parts of maize, 25 to 35 weight parts of maize fiber feed, 4 to 8 weight parts of maize peel, 15 to 22 weight parts of bran and 6 to 10 weight parts of ammonium sulfate; and after fermenting, drying and crushing to obtain a feed finished product. The invention also provides dairy cow feed prepared according to the method, which has high crude protein content.

The invention discloses a halogen-free low-smoke flame retardant double-layer insulating outer layer material for an area-1 cable of an AP1000 nuclear power station and a preparation method thereof, belonging to the technical field of cables. The material comprises a base body consisting of ethylene propylene diene monomer, ethylene propylene monomer and ethylene vinyl acetate copolymer rubber, a halogen-free flame retardant smoke suppression system consisting of magnesium hydroxide, aluminum hydroxide, zinc borate pentahydrate, microcapsule-coated ammonium polyphosphate and siloxane, an anti-radiation system consisting of nano cerium dioxide and lead monoxide, a vulcanization system consisting of 98% bis(tert-butylperoxyisopropyl)benzene and N,N'-m-phenylene dimaleimide, a protection system consisting of 2-mercapto benzimidazole zinc salt, para, para'-diisopropylphenyl diphenylamine and nano zinc oxide, a coupling agent composed of vinyltri(beta-methoxyethyoxy)silane, and a lubricating and softening system consisting of stearic acid and microcrystalline wax. The material disclosed by the invention has the advantages of good radiation resistance, excellent mechanical properties and good electrical insulation properties; and the service life of the material reaches 60 years.

The invention discloses alkyd resin for amino baking paint and a preparation method thereof. The alkyd resin for amino baking paint is prepared from the following components: 10 to 15 parts of dry or half-dry vegetable oil acid, 10 to 15 parts of triatomic alcohol with side chains, 5 to 10 parts of dihydric alcohol with side chains, 20 to 30 parts of phthalic anhydride, 1 to 3 parts of adipic acid, 0.05 to 0.2 part of esterification catalyst, 1 to 5 parts of dimethylbenzene, and 30 to 40 parts of organic solvent. The compositions and the proportions of the raw materials are screened through a lot of experiments, the component proportion is scientific and reasonable, and the alkyd resin for the amino baking paint has good flexibility, shock resistance, rigidity and weather resistance, and is wide in application range. The preparation method of the alkyd resin for amino baking paint is low in production cost, high in preparation efficiency, reasonable in whole process design, strong in operability and easy to implement.

The invention discloses an electrolytic solution used for molybdenum gate screen electrolytic polishing and a preparation method thereof, and application thereof to the molybdenum gate screen electrolytic polishing process. The electrolytic solution consists of the following raw materials: 400 to 450 ml of phosphoric acid, 150 to 200 ml of sulfuric acid, 40 to 60 g of nickel sulfate and 150 to 200 ml of water. Experiment researches show that each ingredient of the electrolytic solution has scientific and reasonable proportion, and can be perfectly used for the electrolytic polishing process of molybdenum gate screens and the like. The molybdenum gate screen electrolytic polishing method of the invention has the advantages of strong operability and good electrolytic polishing effect, and can perfectly remove the burr on the surface of the molybdenum gate screens particularly under the preferable process parameter conditions such as the electrolytic voltage, the time, the temperature and the like, so the quality of the molybdenum gate screens can be improved, the striking rate is obviously reduced after the molybdenum gate screens are assembled to traveling wave tubes, and the performance of the traveling wave tubes is improved.