144results about How to "Optimize the amount of addition" patented technology

The invention provides a grinding aid for slag cement. The grinding aid provided by the invention comprises the following components by weight percent: 5-20wt% of alcohol amine compound, 0.1-5wt% of hydroxypropyl methyl cellulose, 5-30wt% of polyhydric alcohol compound, 0.5-10wt% of sodium hexametaphosphate, 1-10wt% of soluble sulfate, 1-8wt% of sodium dodecyl benzene sulfonate and the balance of water. In the grinding agent provided by the invention, the hydroxypropyl methyl cellulose is beneficial for stimulating the activity of the slag, forming stable hydrous products in the reaction process, improving the property of the cement, improving the strength of the cement and improving the stability of the liquid grinding aid at the same time. Experimental result shows that the grinding aid is capable of increasing the breaking strength of the cement to 9.5MPa and increasing the compressive strength to about 55MPa.

The invention discloses a polyurethane high-temperature-resistant anti-rutting modifier for road asphalt. The modifier comprises the following components in parts by the total weight of the modifier: 25-65 parts of one or two or more of diisocyanate, polyaryl polymethylene isocyanate and diisocyanate derivatives, 15-60 parts of one or two or more of polymer polyol and polymer polyamine, 2-15 parts of one or two or more of micromolecular polyol chain extender, micromolecular polyamine chain extender and micromolecular polyatomic acid chain extender, 0.01-3 parts of organic polyurethane catalyst, and 0-45 parts of poly-alkadiene polymer compound with a number-average molecular weight of 500-50000. The modifier can greatly improve the high-temperature resistance and anti-rutting properties of matrix asphalt and modified asphalt; and prepared modified asphalt is balanced in high and low-temperature performances, good in compatibility with matrix asphalt, and stored stably.

The invention provides a preparation method and an application of a discarded tobacco leaf fermentation extract. Discarded tobacco leaves are fermented with beta-glucosidase, a tobacco biotransformation liquid containing various increased small-molecular aroma substances is obtained through enzymatic curing, then amino acid and reducing sugar in certain proportion are added for a high-temperature Maillard reaction under an alkaline condition, a natural tobacco Maillard reaction liquid is obtained and subjected to pumping filtration, a filtrate and filter residues are obtained, the filtrate is concentrated and mixed with propylene glycol and the like, further separation and purification are performed through molecular distillation, and light components are collected and taken as the discarded tobacco leaf fermentation extract. Reconstituted tobacco substrates with low irritation, low miscellaneous gas, low nicotine content and low harm are prepared from the filter residues with a paper-making process, the quality of the thin discarded tobacco leaf substrates is improved, the use effect of the discarded tobacco leaves on cigarette products is improved, the adding quantity of the extract is increased, the extract can be applied to an atomization filler material for novel carbon heating tobacco, and the quality of the atomization filler material is improved.

The invention discloses a hard alloy and a preparation method thereof. The hard alloy is a hard alloy adopting a surface layer deficient cubic phase gradient structure; the surface layer deficient cubic phase gradient structure comprises a 4.1-18.75 wt.% bonding phase and a 81.25-95.9 wt.% hard phase; the bonding phase comprises metal and Ru; the content of the mental is 4-15 wt.%; the Ru is dissolved in the metal in a solid manner; the hard phase comprises WC and a cubic phase compound; the content of the Ru in the bonding phase n wt.% and the content of the mental in the bonding phase m wt.% meet the relation that when m is larger than or equal to 4 and less than or equal to 8, n is larger than (0.25m-1) and less than or equal to 0.2 m, and when m is larger than 8 and less than or equal to 15, n is larger than or equal to (0.25m-1.2) and less than or equal to 0.25m. The preparation method comprises the steps of preparation of raw materials, mixing of ball milling, pressing formation and sintering. The prepared hard alloy has the advantages that the hard alloy is high in abrasion resistance, tenacity and high-temperature hardness.

The invention relates to the field of cigarette preparation, in particular to a method for preparing a filter stick of a cigarette. The invention aims to solve the technical problem of overcoming the disadvantages in the prior ort, further improves and supplements the prior art, further optimizes the process for preparing the filter stick of the cigarette and greatly improves the production efficiency. The method comprises the following steps: preparing the expanded stem granules for the filter stick; adding the expanded stem granules for the filter stick; and forming the filter stick. According to the improved design, the expanded stem granules for the filter stick with the granule diameters being 0.38mm to 0.7mm are evenly added to the tows of the filter stick by the dosage of tows of 8mg/10mm to 12mg/10mm. By using the expanded stem granules with smaller granule diameters, the invention can realize the quantitative control of the addition amount, reduce the wear of tools in the cutting process, and resist deformation after the cutting process.

The invention specifically relates to a hollow mesoporous silica bead-polymer hybrid ultrafiltration membrane and a preparation method thereof, and belongs to the technical field of membranes. The hybrid ultrafiltration membrane is prepared through the following steps: adding hollow mesoporous silica beads into the matrix of brominated polyphenyl ether which has undergone quaternary amination, allowing hydrogen bonding between hydroxy on the surface of the silica beads and the matrix of the polymer and allowing the chains of the polymer to enter into the meso-structure of the silica beads so as to obtain a hybrid membrane with more excellent performance. The hollow mesoporous silica beads in the invention have mesoporous passages and a hollow structure, which enables the flux of the membrane to be enhanced; the hollow mesoporous silica beads have the characteristic that mesoporous aperture, hollow dimension and thickness of wall of holes are regulatable, which enables the performance of the hybrid ultrafiltration membrane to be adjustable by changing the morphology and structure of the silica beads; addition of a small amount of silica beads can optimize the performance of the hybrid ultrafiltration membrane, thereby saving preparation cost.

The invention discloses peanut butter with a low fat content and a high resveratrol content and a preparation method of the peanut butter, and belongs to the technical field of food processing. According to the peanut butter disclosed by the invention, sprouted peanuts are used for replacing traditional common peanut kernels as raw materials, molecular distillation monostearin, sucrose ester and xanthan gum are in combined utilization as additives, and radio frequency sterilization is adopted for replacing traditional heat sterilization, so that the nutrition of the peanut butter is improved, besides, the problems that the stability is insufficient and bottom sedimentation is easy to cause existing in traditional peanut butter are solved. According to the peanut butter obtained by the preparation method disclosed by the invention, the resveratrol content is increased to 53.20 mu g/g from the original 0.01-4.50 mu g/g, the content of crude protein, the content of free amino acid and the content of vitamin C are remarkably increased, and the content of the crude fat is remarkably reduced. The peanut butter disclosed by the invention is high in stability, and cannot cause obvious oil precipitation phenomena after being left standing for 3 months at a room temperature.

The invention discloses a cordyceps sinensis fruit juice beverage and a preparation method of the cordyceps sinensis fruit juice beverage. The cordyceps sinensis fruit juice beverage is a beverage prepared from the ingredients in percentage by weight: 70 to 80 percent of the cordyceps sinensis fermentation liquid, 5 percent to 20 percent of fruit juice, 4 percent to 10 percent of sugarcane sugar,0.05 percent to 0.2 percent of citric acid, 0.02 percent to 0.08 percent of sodium citrate, 0.02 percent to 0.05 percent of color protecting agents and a proper amount of water for reaching the totalpercentage of 100 percent. The beverage is prepared from the concrete steps of fermentation liquid centrifugation, proportioning, filtering, sterilization, filling and secondary sterilization. The beverage prepared by the method sufficiently utilizes the fermentation waste liquid generated in the cordyceps sinensis entity fermentation process, the juice nutrition ingredients and the functions arematched, the production process is simple, the environment is favorably protected, and the requirement of customers for functional beverages is met.

The invention discloses a nitrile rubber material for a high-performance engine. The nitrile rubber material comprises the following raw materials in parts by weight: 70-100 parts of nitrile rubber 3604, 20-30 parts of ethylene propylene diene monomer, 4-10 parts of organic silicon modified acrylate, 4-6 parts of polyvinyl chloride resin, 0.8-1.3 parts of stearic acid, 1.5-2.5 parts of paraffin, 40-60 parts of carbon black N550, 15-30 parts of zinc oxide whiskers, 8-12 parts of coupling agent KH-550, 13-17 parts of high styrene, 0.7-1.3 parts of trihydroxymethylaminomethane, 1.5-2.1 parts of dicumyl peroxide, 0.5-0.8 part of N,N-diphenyl-phenylene diamine, 0.3-0.5 part of antiager MB, 0.7-1 part of trimethylol-propane trimethacrylate, 1-2 parts of triallyl isocyanurate, 3-8 parts of magnesium hydrate, 1-3 parts of antimonous oxide, 8-13 parts of diethylene glycol dibenzoate and 0.5-1 part of accelerant TMTD. The nitrile rubber material for the high-performance engine disclosed by the invention is excellent in oil resistance, excellent in high temperature resistance, and good in wear-resisting property, warping strength and breaking performance, can be applied to preparation of various sealing materials inside the engines, and is long in service life.

The present invention relates to a fire retardation fireproof material and a preparation method thereof. The fire retardation fireproof material comprises, by mass, 100 parts of a silicon rubber, 5-30 parts of an organic siloxane, 1-10 parts of zinc oxide, 20-200 parts of a fireproof filler, and 20-200 parts of white carbon black. According to the present invention, the processed product has good mechanical property (such as tensile strength, elongation, and tearing strength), good fire retardation and good electrical property (such as breakdown strength), burns at a certain temperature or under an aerobic condition, and can form a rigid housing, wherein the housing can form a compact fireproof layer at a temperature of more than 600 DEG C; fire retardation, temperature resistance and fire resistance of the material can be substantially improved in the case of addition of zinc oxide; the addition amounts of the fireproof filler and the white carbon black can be substantially improved; and the cost of the fire retardation material can be substantially reduced under the premise of assurance of good tensile strength, tear strength, breakdown strength, and fire resistance.

The invention discloses an alkali-activated cementing material and a preparation method thereof, and belongs to the field of buildings. The method comprises the following steps: (1), weighing raw materials, wherein the raw materials include powder, water solution of a liquid activator and an aluminum-containing addition agent, the powder is formed by roasted bauxite separation tailing and slag powder which are mixed according to the mass ratio of (7 to 8):(3 to 2), the mass of the water solution of the liquid activator is 4 to 5% that of powder according to the mass of Na2O, the mass of the aluminum-containing addition agent is calculated according to the mass of the Na2O, the aluminum-contained addition agent is weighed, and a molar ratio between the Na2O and Al2O3 is (0.9 to 1.3):1; (2), evenly mixing the powder and the aluminum-containing addition agent to obtain a solid raw material, and evenly mixing the solid raw material with the water solution of the liquid activator to obtain the alkali-activated cementing material, wherein a mass ratio between water in the raw materials and the solid raw materials is 0.4 to 0.5. The method has the advantage of being low in alkali dissolution quantity.

The invention discloses a method for producing cellulase by trichoderma reesei fermentation. The method is characterized in that in a trichoderma reesei fermentation culture stage, a mixture of an induction carbon source and a nitrogen source is fed in a fed-batch manner, and preferably, the fed-batch feeding time is 24-26h after fermentation. The induction carbon source is obtained by mixing a biomass material enzymolysis product and a sophorose inducer according to a ratio of (3-5): (7-9), and the nitrogen source is a mixture of corn steep liquor and ammonium sulfate. The method has the advantages that the adding amount of phosphate in a trichoderma reesei fermentation culture medium is optimized, and production of the cellulase by the trichoderma reesei through permentation is performedwith low culture medium cost; the optimal nitrogen source feeding ratio is selected, so that the nitrogen source cost is saved; and the carbon-nitrogen ratio in the feeding process is strictly controlled, so that the trichoderma reesei can synthesize the cellulase at high yield.

The invention discloses a polypropylene composition special for automobile bumpers and a preparing method thereof. The raw material formula of the polypropylene composition special for automobile bumpers is composed of, by weight, 30-50 parts of copolymerization polypropylene, 30-50 parts of copolymerization polypropylene reclaimed materials, 10-30 parts of calcium carbonate, 15-25 parts of flexibilizer, 0.1-0.5 part of antioxidant 1010, 0.1-0.5 part of antioxidant 168, 0.3-0.5 part of uvioresistant agent UV-531 and 0.08-0.1 part of diffusing powder ethylene bis stearamide (EBS). The polypropylene composition special for automobile bumpers can meet basic indexes of the automobile bumpers, has some indexes surpassing the world industrial level, has good characteristics of high rigidity, impact resistance, scratching resistance and low temperature resistance, can resist 95 DEG C high temperature and -30 DEG C low temperature, is solarization resistant and aging resistant, has service life as long as more than 15 years, can be recycled for reconstruction, and is an optimum material capable of protecting environment, being recycled, saving energy and reducing emission.

The invention discloses a halogen-free flame retardant glass fiber reinforced polyphenyl ether/polystyrene composition and a preparation method thereof. According to the composition, microcapsule-wrapped red phosphorus master batch is compounded with a flame retardant synergist to maintain the reinforcement and toughening effects of an alkali-free glass fiber to a polyphenyl ether and polystyrene composition, and the weight ratio of the microcapsule-wrapped red phosphorus master batch to the flame retardant synergist is (4-6) to (6-3). The halogen-free flame retardant glass fiber reinforced polyphenyl ether/polystyrene composition disclosed by the invention is high in strength, good in toughness; a flame retardant is environment-friendly, free of halogen, small in addition amount, high in flowability, smooth in surface, good in forming and processing property, low in cost and relatively good in practical applicability, and the flame retarding grade (2mm) is of Fv-0.

The invention relates to sintered flux for nickel strip electrode electro-slag welding. The sintered flux for the nickel strip electrode electro-slag welding is characterized in that the intered flux is prepared from dry powder components and binder water glass; the dry powder components comprise, by mass, 45-75% of CaF2, 15-35% of Al2O3, 1-5% of SiO2, 1-5% of CaO, 1-5% of MgO, 1-10% of sodium fluoroaluminate, 1-5% of rare earth fluoride and 1-5% of ferroniobium alloy powder; the ratio of potassium to sodium of the binder water glass is 1 to 1, the molar ratio is 2.2-3.5, the baume degree at room temperature is 38-50, and the dosage is 15-25% of the weight of the dry powder. The sintered flux can be used through being matched with various nickel base welding strip such as EQNiCrMo-3 and EQNiCr-3, when strip electrode electro-slag surfacing is conducted through matching with the nickel base welding strip, stable electro-slag process and welding technological property can be maintained at the quick welding condition of 250 mm/min, the quality of formation of surfacing layers is good, defects do not exist in lap joint, and various indexes of the surfacing layers can meet usage requirements of users.

The invention discloses a nanometer composite ocean anticorrosion coating and a preparation method thereof, belonging to the field ofcorrosion prevention of coatings. The coating contains the following components in percentage by weight: a component A: 20%-40% of acrylic resin, 5%-10% of a hydroxyl epoxy phosphate dispersing agent, 4%-7% of a Fe3O4@TiO2-h-BN hybridized composite material, 0.5%-2%of nano-crystalline cellulose, 5%-15% of epoxy resin, 1.2%-3.5% of other aids, 20%-25% of deionized water, 5%-10% of zinc powder and 3%-7% of calcium carbonate; and a component B: a curing agent, namely 15%-25% of a water-based isocyanate curing agent. The coating prepared by virtue of the preparation method has good wear resistance, fouling resistance and corrosion resistance, is mainly applied to the fouling prevention and corrosion prevention of petroleum steel-frame structure platforms in an ocean atmospheric region environment and is also suitable for the fields of fouling prevention andcorrosion prevention of ships and underwater pipelines.

The invention relates to a process method for producing yeast polysaccharide and yeast nucleotide from yeast, which solves the problems of low yield, long period, high equipment investment and high production cost existing in the conventional process for extracting the yeast polysaccharide and the yeast nucleotide. The yeast polysaccharide and the yeast nucleotide are respectively extracted by taking waste beer yeast as a raw material through the steps of high-pressure homogenization and performing of an enzyme method. The process method has the characteristics of high yield and purity of extracted yeast polysaccharide, high yeast nucleotide content, short extraction time, low enzyme consumption, low equipment investment and production cost and suitability for large-scale industrial production.

The invention relates to a graphene fluoro-carbon metal paint and a preparation method thereof. The metal paint comprises a component A and a component B, wherein the component A comprises the following raw materials: 60-70 parts of fluoro-carbon resin, 5-10 parts of aluminum paste, 20-25 parts of a solvent, 0.1-1 part of graphene, 0.1-1 part of a dispersant, 0.5-1 part of an orientation agent, and 0.1-1 part of an anti-settling agent; and the component B is a curing agent with mass part of 6-7 parts. The method for preparing the metal paint comprises the following steps: weighing the raw materials according to the ratio, mixing graphene, fluoro-carbon resin and a part of the solvent, performing ultrasonic dispersion, adding the orientation agent, then performing mechanical stirring and dispersion; mixing the aluminum paste and the residual solvent, adding the dispersant, performing mechanical stirring and dispersion; then adding the dispersed aluminum paste in the dispersed graphene fluoro-carbon resin liquid, adding the anti-settling agent, and performing mechanical stirring and dispersion to obtain the component A of the metal paint, and taking the curing agent as the component B of the metal paint, and uniformly mixing the component A and the component B while in use. The metal paint has the advantages that 1) a coating has excellent anti-corrosive property; and 2) the coating conductivity is good, and the coating can be used for the occasions with electric conduction and heat radiation requirements.

The invention relates to a method for preparing hippophae rhamnoides seed micro powder capsules. The method for preparing the hippophae rhamnoides seed micro powder capsules comprises the following steps of: performing vacuum drying on hippophae rhamnoides seeds; adding konjac glucomannan-acrylic graft copolymer (KAC) which serves as an anticaking agent into the hippophae rhamnoides seeds; performing low-temperature superfine pulverization on the mixture; and encapsulating the mixture, and performing irradiation sterilization at the temperature of 600 DEG C. The method has the advantages of making full use of the hippophae rhamnoides seeds, generating no by-products, keeping the primitivity of the hippophae rhamnoides seeds, avoiding destruction to heat-sensitive and unstable active ingredients, reserving the effective active ingredients and the original various nutritional ingredients in the hippophae rhamnoides seeds to the utmost extent, and being favorable for absorption. An adopted anti-caking agent can solve the problems that the superfine powder is aggregated easily and is difficult to disperse due to superfine particle sizes, and if the added content of the anti-caking agent is less, the anti-caking performance is higher so that the purity of the capsule hippophae rhamnoides seed powder reaches over 99.6 percent. Besides, the method for preparing the hippophae rhamnoides seed micro powder capsules is simple, has less equipment investments, a low production cost and no three wastes outputs, is suitable for application in hippophae rhamnoides producing areas with underdeveloped economy, and is environment-friendly industrialized technology.

The invention discloses whole grain purple sweet potato gluten which comprises the following components in percent by mass: 2 to 6 percent of wheat dietary fiber flour, 3 to 9 percent of waxy wheat flour, 0.3 to 0.9 percent of Konjac powder, 2 to 10 parts of whole grain purple sweet potato flour, 4 to 5 percent of salt, 4 to 4.5 percent of a sweetener, 20 to 25 percent of water, and the balance of wheat flour. The invention further discloses a preparation method of the whole grain purple sweet potato gluten. The preparation method of the whole grain purple sweet potato gluten comprises the steps of mixing, dough kneading, squeezing and curing, splitting, cooling, mixing and seasoning, packaging, sealing, boxing and the like. The whole grain purple sweet potato gluten prepared through the formula and the preparation method provided by the invention is low in salt and sugar, is not added with any chemical additives, tastes good, and is nutritional and healthy; the preparation method provided by the invention is simple and easy to control, is relatively low in cost, and is easy to achieve large scale promotion and production.