9results about How to "Low oil absorption" patented technology

This invention provides a method for preparing titanium dioxide and its uses, relating to the field of inorganic chemical pigments. The preparation method includes the following steps: taking a metatitanic acid slurry, adding multivalent ion pairs to obtain a mixed slurry, calcining it to obtain a primary titanium dioxide product; adding water to the primary titanium dioxide product to make a slurry of a specific concentration, then sand-milling and ultrasonicating it, adding citric acid to obtain a ground slurry; heating, adjusting the pH, adding sodium silicate solution dropwise, and coating with a silica film; further adjusting the pH of the slurry to alkaline, adding sodium aluminate solution to form an aluminosilicate mesophase; adding a surfactant to form a solvation layer, washing and drying to obtain a crude titanium dioxide product; and pulverizing it to obtain the finished titanium dioxide product. The median particle size d of the titanium dioxide is... 50 It has a pH of 0.24-0.28, a filtration pressure of 0.2 bar / g, low metal impurity content, a zeta potential ≥40 mV, and a lightness value L of 99.7, and can be used in the production of cellulose acetate.

The invention provides a preparation method and application of modified dolomite, and belongs to the technical field of inorganic filler. The method comprises the following steps: mixing dolomite powder and a solvent to prepare slurry; a modifier is added into the slurry and stirred for a reaction, a mixed material is obtained, and the modifier comprises oleic acid and an aluminate coupling agent; and carrying out solid-liquid separation on the mixed material, collecting a solid phase, and drying the solid phase to obtain the modified dolomite. On the premise of high activity and high hydrophobicity of aluminate, oleic acid is introduced to make up for the defect that a single aluminate coupling agent may cause a high oil absorption value, so that the modified dolomite has high activation index, high hydrophobicity and low oil absorption value, thereby well improving the surface hydrophilicity and hydrophobicity and interface bonding force of the dolomite; the modified dolomite is more suitable for being combined with other components for application, the additional value of dolomite mineral resources is effectively improved, and a feasible path is provided for high-quality development of dolomite.

The utility model relates to the technical field of powder processing, and particularly discloses an ultrafine powder microbead sorting system which comprises a raw material warehouse, a primary grading buffer bin, a primary vertical single-rotor grader, a bag type dust collector I, a secondary vertical single-rotor grader, a cyclone collector, a bag type dust collector II and an ultrafine powder bin which are sequentially communicated in series, the first-stage vertical single-rotor grader is further connected with a primary powder selecting coarse powder bin, the second-stage vertical single-rotor grader is further connected with an ultrafine grading coarse powder bin, and the cyclone collector is further connected with a secondary fine powder bin; according to the fly ash secondary sorting device, fly ash is subjected to secondary sorting, micro-bead products with different mesh numbers are selected through control, large-particle-size powder is conveyed to other procedures to participate in grinding and sorting, small-particle-size powder can replace talcum powder, silica powder, ground calcium carbonate and other filling materials in the coating industry, the application industry of fly ash is widened, and the application range of fly ash is widened. The recycling of the fly ash is improved, the energy consumption is reduced, and meanwhile, the environmental pollution caused by mining is reduced.

The invention discloses coal gangue with a low oil absorption value and a preparation method thereof, and belongs to the technical field of polymer composite material functional assistants, and the coal gangue is prepared from the following raw materials in parts by weight: 70-85 parts of coal gangue, 3-4 parts of palmitic acid, 2-4 parts of stearic acid, 2-5 parts of polyethylene wax, 3-7 parts of polypropylene wax and 5-10 parts of linear low density polyethylene powder. The preparation method comprises the following steps: mixing the raw materials, stirring, heating, and extruding in a single screw extruder after stirring to obtain the coal gangue with low oil absorption value. Through a multi-layer filling modification technology, the coal gangue is gradually filled and modified by the low-viscosity-high-viscosity auxiliary agent, and the modified coal gangue which is low in oil absorption value, low in gas displacement and high in compatibility is obtained. In addition, the raw materials are easy to obtain, and the preparation method is simple and convenient to popularize and apply.

The application discloses a tricyclic borate coupling agent, which is synthesized by the following method: taking boric acid, diethanolamine and toluene, heating to reflux and water separation for 2 hours; adding phenol to reflux and water separation for 8 hours; removing toluene by vacuum distillation, purifying by ethyl acetate to obtain a bicyclic borate phenyl ester. Taking cyanuric chloride, tetradecylamine and anhydrous THF, reacting at 0 DEG C for 2 hours, continuing to react at 35 DEG C for 4 hours; filtering, removing THF by vacuum distillation, purifying by ethanol to obtain a double long-chain amino triazine compound. Taking the bicyclic borate phenyl ester, the double long-chain amino triazine compound, DMF and sodium carbonate, reacting at 130 DEG C for 8 hours; filtering, removing DMF by vacuum distillation to obtain the tricyclic borate coupling agent. The application further discloses a synthesis method and application of the tricyclic borate coupling agent. The tricyclic borate coupling agent provided by the application introduces a cyclic large steric group and a conjugated aromatic ring on a B-O bond, enhances the molecular structure stability of the tricyclic borate coupling agent, significantly reduces the oil absorption value of heavy calcium carbonate powder and effectively improves practicability.

The application discloses a device and method for reducing the oil absorption of fried potato chips, which comprises a frying cavity, a draining cavity, a rotating drive mechanism arranged at the upper end of the frying cavity, a vacuum device connected with the draining cavity or the frying cavity through a control valve, a frying basket, and the frying basket is detachably connected with the rotating drive mechanism and reciprocatingly arranged between the draining cavity and the frying cavity. The device can complete the frying and draining of potato chips, clean the frying oil attached to the surface of the potato chips, and reduce the oil content of the potato chips. The method can add a certain amount of gamma oryzanol into the oil, control the physicochemical properties of the heat transfer medium oil in the frying process, reduce the viscosity increase value of the frying oil, inhibit the evaporation and escape of water in the fried food, and combine with hot centrifugal rotation to reduce the oil absorption of the fried food in the frying process and the cooling stage.

The application relates to a production control method, system, terminal and medium of low oil absorption deep-fried doughnuts, the production control method comprising the following steps: acquiring the actual water content of dough in a low-temperature pre-solidification stage with an oil temperature of 120 DEG C and the oil temperature field uniformity; judging whether the actual water content is lower than a water content threshold value; if yes, judging whether the continuous duration is not less than a duration threshold value and the oil temperature field uniformity is less than a threshold value; if yes, entering a medium-temperature structure solidification stage, the oil temperature is increased to 160 DEG C at a set temperature increasing rate, and a molecular sieve is preheated to 60 DEG C; according to a polar component target value, a target deep-frying duration is predicted; judging whether the target deep-frying duration is greater than a planned deep-frying duration; if yes, starting the molecular sieve; when the deep-frying duration reaches the planned deep-frying duration, entering a negative pressure oil removal stage; acquiring a residual oil rate; judging whether the residual oil rate is less than a residual rate threshold value; if yes, reducing the oil temperature to 80 DEG C. The application can reduce the oil absorption rate while ensuring the food quality.

The invention provides modified calcium silicate, a preparation method and application thereof and a coating, and belongs to the technical field of coatings. The preparation method comprises the following steps: mixing a Na2SiO3 solution, a Ca (OH) 2 solution, a modifier and water, and carrying out hydrothermal modification to obtain the modified calcium silicate. According to the invention, the modifier increases the lipophilicity and dispersity of calcium silicate, improves the compatibility of calcium silicate with the coating, and further optimizes the mechanical properties of the coating, and the coating formed by the prepared coating has good adhesive force and mechanical properties. The hydrothermal modification parameters are further limited, the crystallization degree and the deagglomeration of the modified calcium silicate are improved by increasing the temperature, the crystal growth can be optimized by prolonging the reaction time of the hydrothermal modification, but secondary agglomeration can be caused by overlong reaction time, uniform mixing is ensured by the rotating speed, and the phase composition of the product is influenced by the Ca / Si molar ratio. And the Na2SiO3 solution is limited to be obtained from high-silicon solid waste, so that the dual goals of high-value utilization of the solid waste and reduction of the coating cost are achieved.

The application provides a kind of addition type bonding glue with chemical resistance and its preparation method and application.The addition type bonding glue includes silicone composition and modified filler;The silicone composition includes 4-amino-3,5-difluorophenol modified tackifying MQ resin, vinyl silicone oil, hydrogen-containing silicone oil, catalyst and inhibitor;The modified filler is obtained by the reaction of coupling agent and filler after.The application modifies MQ resin by 4-amino-3,5-difluorophenol, introduces C-F bond, C-F bond has large bond energy, thereby gives the excellent stability of bonding glue.Meanwhile, C-F bond has low surface energy, thereby gives the excellent chemical resistance and corrosion resistance of bonding glue such as oil repellency.Secondly, modified tackifying MQ resin has electron-donating ability amino, can further improve the bonding strength of bonding glue, and its chemical resistance.