42results about How to "Adjust surface tension" patented technology

The invention discloses a method of melting aluminum ash to prepare brown aluminum oxide. At first, aluminum ash is subjected to an acidification treatment and an alkalization treatment in sequence; then solid-liquid separation is performed to obtain aluminum ash; the obtained aluminum ash is subjected to drying dehydration and high temperature burning; after the aluminum ash is cooled, the aluminum ash is mixed with iron chips and coke, and finally the mixture is sintered to obtain brown aluminum oxide. In the melting step, burned aluminum ash, iron chips, and coke are mixed according to a ratio of 100:3-4:8-13, the mixture is melted for 2 to 3 hours at a high temperature of 2300 to 2700 DEG C, and finally the mixture is ground and graded to obtain the brown aluminum oxide. The aluminum ash is subjected to a harmless treatment and converted into valuable resources. The problem of shortage of high aluminum bauxite is solved, and the production cost of brown aluminum oxide is also reduced.

The invention discloses a silver paste suitable for spraying of a ceramic filter. The silver paste comprises the following components in percentage by mass: 75-82% of silver powder, 0.2-3% of glass powder, 0.5-1% of an aging adhesion promoter, 8-14% of resin, 7-15% of an organic solvent and 1-3% of an assistant, wherein the resin is hydroxyl acrylic resin with a molecular weight of 1000-5000 and aviscosity of 1000-4000 mPa.S. The invention further discloses a preparation method and a spraying film forming method of the silver paste suitable for surface spraying of the ceramic filter. According to the silver paste, storage stability is enhanced, the silver paste can adapt to metallization of the surface of a special-shaped ceramic filter with a complex structure, the strength of a dried silver paste film is improved, and the adhesive force between the silver film and the ceramic surface of the filter is improved. The preparation process and the spraying process of the silver paste aresimple, the sintered silver film is firm, not prone to falling off and uniform in thickness, and the silver paste can adapt to mass production of ceramic filters.

The invention discloses an electron transport layer ink, a preparation method thereof and an electroluminescence device. The electron transport layer ink is prepared from, by weight, 0.5-30% of an organic micro-molecular electron transport material, 0.1-5% of an alkali metal complex doping material, 0.1-5% of a surface tension modifier, 0.1-5% of a viscosity modifier, 69-99% of a polar mixed solvent and 0.1-30% of an auxiliary solvent. The electron transport layer ink, the preparation method thereof and the electroluminescence device have the advantages that the prepared electron transport layer ink can be formed in an electron transport layer through a printing technology, and the solvent in the electron transport layer ink can also be prevented from destroying the lower luminescent layer.

The present invention discloses a composite foaming agent for urea-formaldehyde resin, a preparing method and an application thereof. The composite foaming agent of the invention is composed of a foaming agent, a foam stabilizer and a dispersing agent. After the composite foaming agent is added into the urea-formaldehyde resin additive, the volume of the urea-formaldehyde resin can be increased for 2-3 times for forming the fine, uniform and long-lasting foamed urea-formaldehyde resin, effectively regulating the surface tension of the glue solution, reducing the conglobation phenomenon of flour, increasing the fluidity of the urea-formaldehyde resin, settling the adverse phenomena of glue bleeding, glue leakage, non-homogeneous adhesive layer, etc. which commonly exist in the prior urea-formaldehyde resin adhesive, so that the urea-formaldehyde resin on the plate blank of the veneer board has excellent homogeneity and the bleeding balancing is kept and the total usage of flour and the urea-formaldehyde resin after adhesive mixing is reduced for 10-30%. Additionally, the composite foaming agent of the invention has the advantages of excellent safety, no adverse effect in the using process and capability for effectively reducing the release amount of the formaldehyde of the artificial board. Furthermore the mechanical properties of the prepared artificial board can equally obtain the requirement of the national standard.

The invention belongs to the technical field of lubricants, and in particular relates to a preparation method of a reinforcing and toughening lubricant specially used for ABS. The method comprises thefollowing steps: firstly nano powder is added into ethanol, a treating agent is added to modify the surface of the powder, the obtained treated nano powder is added into ethylenediamine to obtain aminated nano powder, the aminated nano powder and stearic acid are subjected to a reaction at high temperature to obtain a waxy substance, glass cellulose modified by glyceryl monostearate can be addedinto the waxy substance, extrusion granulation is performed, and therefore the reinforcing and toughening lubricant specially used for the ABS can be obtained. According to the method provided by theinvention, the prepared lubricant is added into the ABS resin, and the lubricant has good compatibility with the ABS resin, and improves the impact strength and bending strength of the ABS resin whileimproving the fluidity of the ABS resin.

The invention discloses a thickening damping type high-speed railway II type track plate. The thickening damping type high-speed railway II type track plate comprises a base, wherein a track plate body is fixed to the top of the base, a gap is arranged between the base and the track plate body, and the void is filled with a cement asphalt mortar layer; a cavity is formed in the base, a steel plateis installed in the cavity, and inserting blades are fixed to the two ends of the steel plate; the inserting blades are fixedly connected in the base in an inserting mode, a plurality of locating columns are fixed to the steel plate, and the locating columns are fixedly connected to the bottom surface of the track plate body after penetrating through the cement asphalt mortar layer; first vertical through holes are formed in the two ends of the base and the track plate body; second through holes, corresponding to the first through holes, are formed in the inserting blades; and a fixing bolt is fixedly connected with the base after penetrating through the first through holes and the second through holes. The thickening damping type high-speed railway II type track plate can improve the deficiencies in the prior art, and improve the damping performance of the track plate.

The invention relates to a ferrite core surface epoxy powder coating application process, comprising the steps of preparing modified epoxy powder coating, treating the surface of a ferrite core, thermally treating the surface, applying coating to the surface, thermally treating the surface, cooling, discharging, and detecting properties, wherein the modified epoxy powder coating is made by reaction of epoxy powder coating, a penetrant, nano metal powder, polyacrylate, and melamine resin, and a surface treating agent is made by reaction of sodium chloride, sodium bicarbonate, water and ethanol. The surface treating agent prepared herein is capable of excellently removing pollutants, such as oil, protein, fat, and dust; the modified epoxy powder coating has excellent properties, such as adhesion, leveling performance, and voltage breakdown resistance; the ferrite core surface epoxy powder coating application process designed herein provides adhesion of the epoxy powder coating to the surface of ferrite to be improved greatly, voltage breakdown resistance is achieved, and the defects such as pits, wrinkles, pinholes, bumps are effectively reduced.

The invention provides a method for preparing an egg membrane element by a subcritical method, and relates to the technical field of egg membrane element preparation. According to the invention, the egg membrane element is prepared by adopting the subcritical method, and the decomposition rate within 1h is up to 95% or above; and high-price enzymes are not needed, so that the production cost is reduced. According to the method disclosed by the invention, a solution obtained after eggshell membrane decomposition contains free amino acids and small molecule polypeptides, so that the content of the free amino acids and the small molecule polypeptides in the prepared egg membrane element is high, and the requirements of current cosmetics and health products on low molecular weight are met. According to the method, in a supernatant obtained through subcritical decomposition, sodium hydroxide is directly subjected to spray drying after being neutralized, and the desalting step is not needed.The method has the advantages of short procedure, low cost, easy preparation, conservation of energy and the like, and the obtained eggshell membrane polypeptide powder can be directly added into cosmetics and food after being sterilized.

The invention provides an inorganic nanometer material printing ink, wherein the solvent in the inorganic nanometer material printing ink is an organic solvent, the inorganic nanometer material printing ink comprises at least an inorganic nanometer material and at least a sulfinamide-based organic solvent, the sulfinamide-based organic solvent has a structure represented by a structure general formula I, and in the formula I, R1 and R2 are independently selected from H, C1-20 aliphatic groups and C1-20 aromatic groups, R3 is selected from hydrocarbonyl or a hydrocarbonyl derivative, the hydrocarbonyl comprises aliphatic hydrocarbonyl and aromatic hydrocarbonyl, and the hydrocarbonyl derivative comprises an aliphatic hydrocarbonyl derivative and an aromatic hydrocarbonyl derivative.

The invention provides boron-containing dopant slurry. The boron-containing dopant slurry is prepared from the following components in parts by weight: 5-70 parts of organic borate, 15-50 parts of polyol, 10-40 parts of dihydroxy ylamine and 0.1-2.5 parts of organic quaternary ammonium salt. The invention further provides a silicon wafer boron doping method. The silicon wafer boron doping method comprises the following steps that (1) the boron-containing dopant slurry is subjected to spraying or screen printing on the surface of a silicon wafer; (2) the silicon wafer treated in the step (1) isplaced into a diffusion furnace for boron diffusion, wherein the diffusion temperature is 700-850 DEG C. The boron-containing dopant slurry can realize low-temperature boron doping, thermal energy consumption can be obviously reduced, and damage to a crystal structure and electrical performance of a crystalline silicon substrate is reduced.

The invention discloses a temperature-sensitive CTP type imaging coating having good stability and coating property. The temperature-sensitive CTP type imaging coating is characterized in that the coating is composed of following components, including solvent resistant resin, alkali soluble resin, film forming resin, solubilizer, added resin, solubility-inhibiting and solubility-promoting resin, infrared absorbing dye and dye, wherein the alkali soluble resin is modified resin obtained by copolymerizing alkali soluble structural monomer, acrylamide structural monomer, and/or sulfonamide structural monomer, and the solubility-inhibiting and solubility-promoting resin is phenol etherified resin. The coating is advantaged in that CTP plates prepared by the above formula have better printing durability and solvent resistance and have relatively low sensitivity.

The invention discloses dihydric alcohol type active dye ink. The active dye ink comprises the raw materials of active pigments, ethylene glycol, 1,3-propanediol, 1,2-hexanediol ethanol, diethylene glycol, a buffer agent, a surfactant, and deionized water. The active pigments in the active dye ink are prepared by mixing glycol and 1,3-propylene glycol in a proportion of 1 to 1, so that the durability of the dye ink can be improved, and the dye ink has good moisture preserving property, K/S value and color fixation rate; meanwhile, by adding 1,3-hexanediol, on one hand, the stability of the inkcan be improved by virtue of 1,3-hexanediol as an ink solvent, the surface tension of the dye ink can be adjusted by virtue of 1,3-hexanediol as a surface tension regulator, the viscosity of the inkcan be adjusted, and the decrease of the color fixation rate of the ink in the storage process can be improved; and by adding diethylene glycol, a hydrogen bond generated by diethylene glycol and water is relatively strong and is unlikely to be broken, so that the layering of the active dye link can be avoided.