42results about How to "Not easy to crust" patented technology

The invention provides a binder for installation of a thermal insulation decorative plate. The binder comprises, by weight, 25 to 40% of cement, 25 to 45% of silica sand of 20 to 40 meshes, 8 to 15% of silica sand of 40 to 70 meshes, 3 to 8% of silica sand of 70 to 140 meshes, 0 to 5% of talcum powder, 0 to 5% of ground calcium carbonate powder, 2 to 8% of dispersible latex powder, 0 to 1% of cellulose ether, 0 to 0.6% of plant fibers and 0 to 0.5% of a thixotropic agent. The binder for installation of the thermal insulation decorative plate has the characteristics of high adhesion, strong anti-sliding capability, strong initial adhesion, long construction operation time and difficult skinning, effectively solves the problems produced in thermal insulation decorative plate pasting installation, guarantees enough adhesion between a thermal insulation decorative plate and a wall surface, and improves safety of the thermal insulation decorative plate in engineering application.

The invention discloses a upflow anaerobic reactor. The novel upflow anaerobic reactor comprises a tank, a stirring cracking assembly, a built-in heat energy conversion unit, a feeding device, a discharge device, a pressure protector, a gas outlet pipe and a slag discharge pipe. The stirring cracking assembly having functions of stirring mixing, cracking and slag removal, the built-in heat energy conversion unit, the discharge device which is sealed by water and can discharge dross, and the feeding device provided with a stored material automatic discharge device are ranged in the tank. The novel upflow anaerobic reactor is easy for operation, does not produce crusting in treatment on a fermentation mixture of livestock and poultry night soil, rural domestic organic garbage and straws, allows an uniform and constant reaction temperature, can operate stably and reliably, has low investment and operation costs, a high-load treatment capacity, large TS concentration and short hydraulic retention time. Through the novel upflow anaerobic reactor, a solid content of a fermentation solution is in a range of 8 to 15%; COD clearance is in a range of 60 to 80%; and a biogas yield is in a range of 1.5 to 3m<3> / m<3>*d.

The invention discloses an environment-friendly anti-counterfeiting ink and a preparation method thereof. The ink is composed of pure water, resin, propylene glycol, water-based film-forming plasticizer, pigments and fillers, auxiliary agents, water-based gold powder and other components. The present invention uses water-based polyurethane resin as the binder, which has very good flexibility. The resin has a strong ability to disperse and wrap pigments, is not easy to form skins, and has good resolubility and reduction, thereby solving the problem of easy blockage of screen plates during ink printing. In addition, water-based film-forming plasticizer can be added to change the glass transition temperature and film-forming temperature of the resin, and the weather resistance of the ink can be adjusted according to different climates. The selection of two different thickeners can make the thickened ink in a long-term stable viscosity range, which has a significant effect on storage stability. The anti-counterfeiting ink prepared by the invention has the advantages of environmental protection, safety, low odor, good film-forming covering performance, wear resistance and easy scratching, and will not become difficult to scratch off with prolonged storage time after printing.

The invention discloses a spiral rotating bed, comprising a spiral bed layer, a liquid-phase distribution pipe, a shell, a gas-phase inlet, a gas-phase outlet, a liquid-phase inlet, a liquid-phase outlet, and the like, wherein the spiral bed layer is made of porous materials and forms a spiral shape on the axial direction; the liquid-phase distribution pipe is arranged in the axial center of the spiral bed layer and communicated with the liquid-phase inlet; the gas-phase inlet and the gas-phase outlet are arranged at two ends of the shell, and the liquid-phase outlet is arranged at the bottomof the shell. The spiral rotating bed is suitable for gas-liquid mass transfer and reaction, especially the gas-liquid mass transfer and reaction for removing harmful ingredients in gas phase by utilizing liquid phase and with larger gas-liquid. The device has simple structure, small size, high mass transfer efficiency and low pressure drop, can obtain longer gas-liquid two-phase contact paths, realizes forced updating on the surface of droplet surface, and is beneficial to the gas-liquid mass transfer and reaction.

The invention discloses a defoaming agent for paint and ink and a preparation method of the defoaming agent. The defoaming agent for the paint and the ink is prepared from the following raw materialsin parts by mass: 42-48 parts of silicone oil, 14 -20 parts of hydrophobic silicon dioxide, 14-18 parts of silicon paste, 10-20 parts of higher alcohol, 1-3 parts of glycerin fatty acid ester, 3-5 parts of sodium hexametaphosphate, 1-2 parts of sodium secondary alkyl sulfonate, 4-10 parts of magnesium hydroxide, 5-11 parts of dimer linoleic acid, 5-7 parts of white carbon black, 4-8 parts of whitemineral oil, 8-14 parts of a surfactant, 20-30 parts of polyethylene wax, 10-12 parts of lecithin, 7-18 parts of a thickener, 4-14 parts of a co-emulsifier, 16-20 parts of distearoyl diethylamine and90-110 parts of deionized water. The defoaming agent of the invention has the beneficial effects of good dispersibility, strong affinity, strong foam inhibition capability, fast foam inhibition speed, lasting action time, capacity of realizing difficult generation of fine pinhole foams in the paint, strong high temperature resistance and stability and good compatibility with the paint and enablesthe surface of the paint to not prone to skinning and to have gloss, and a mixed solution of the defoaming agent with the paint has no layering phenomenon .

The invention provides a continuous solution polymerization method for pre-polymerizing polyurethane, which is mainly characterized in that diisocyanate and polyether diol are respectively dissolved through polar solvents to prepare solutions at certain concentrations; then the two solutions are mixed evenly in a mixer according to specific proportion; the mixed solutions pass through a static mixer pipe with specific length and react thoroughly under specific temperature, producing prepolymer solution with isocyanate groups at both ends. The prepolymer solution can be directly used for chain extension reaction and the macromolecule polyurethane solution produced can be used in filature for producing polyurethane fibre. The invention provides a method to prepare polyurethane prepolymer through continuous solution polymerization; the continuous process of the pre-polymerization of polyurethane can eliminate the differences between different batches in batch polymerization and the prepolymer is of moderate viscosity and is convenient to cool and transfer, and the wall of the reaction pipe is not easy to crust.

The invention relates to the field of printing ink and discloses high-covering-power styrene-acrylate emulsion, a synthesis method thereof and use thereof in aqueous printing ink. The preparation method comprises: mixing deionized water, an initiator, a lacquer and a composite emulsifier to obtain solution A; regulating the pH value; introducing nitrogen to remove oxygen; mixing a monomer with a molecular weight regulator to obtain solution B; dripping solution B into solution A to perform a chemical reaction; regulating the pH value of shell emulsion and heating to prepare shell emulsion; adding a composite emulsifier and an initiator into the synthesized shell emulsion; dripping a vinyl monomer to synthesize core-shell emulsion; and cooling, regulating the pH value and filtering to obtain the styrene-acrylate emulsion. The invention also provides aqueous printing ink using the high-covering-power styrene-acrylate emulsion. The preparation process is very simple, the reaction processis simple and easy to control, the operability is high, and the method is suitable for large-scale production. The aqueous printing ink disclosed by the invention is high in resolubility, is insusceptible to crusting and blocking printing plate and has high printing adaptability.

The invention discloses a high-solid low-viscosity large-particle-size polyvinyl acetate emulsion and a preparation method thereof, and the emulsion is applied to the technical field of adhesive compounding. The emulsion comprises, in parts by weight, vinyl acetate, vinyl versatate, methacrylic acid, a crosslinking monomer hydroxyethyl methylacrylate (HEMA), deionized water, an emulsifier, polyvinyl alcohol, ammonium persulfate as an initiator, a reducing agent as an initiator, a plasticizer, urea, a defoaming agent and a preservative. According to the invention, a core-shell copolymerization process is adopted, and polymerization is carried out in a manner of early-stage high-bottoming monomers and staged gradual acceleration of rotation speed, so that the emulsion is narrower in particle size distribution, larger in average particle size and lower in viscosity in a later stage; and the defects of small particle size, high viscosity, low compression shear strength, poor freeze-thaw stability, easy surface skinning, aldehyde existence and the like of a traditional high-solid-content polyvinyl acetate emulsion are overcome, and the polyvinyl acetate emulsion has good glue performance and storage stability.

The invention discloses a upflow anaerobic reactor. The novel upflow anaerobic reactor comprises a tank, a stirring cracking assembly, a built-in heat energy conversion unit, a feeding device, a discharge device, a pressure protector, a gas outlet pipe and a slag discharge pipe. The stirring cracking assembly having functions of stirring mixing, cracking and slag removal, the built-in heat energy conversion unit, the discharge device which is sealed by water and can discharge dross, and the feeding device provided with a stored material automatic discharge device are ranged in the tank. The novel upflow anaerobic reactor is easy for operation, does not produce crusting in treatment on a fermentation mixture of livestock and poultry night soil, rural domestic organic garbage and straws, allows an uniform and constant reaction temperature, can operate stably and reliably, has low investment and operation costs, a high-load treatment capacity, large TS concentration and short hydraulic retention time. Through the novel upflow anaerobic reactor, a solid content of a fermentation solution is in a range of 8 to 15%; COD clearance is in a range of 60 to 80%; and a biogas yield is in a range of 1.5 to 3m<3> / m<3>*d.

The invention discloses a method for preparing metal beryllium by electrolyzing beryllium oxide through fluoride molten salt, which comprises the following steps: (1) constructing a BeF2-MFn molten salt system, where MFn is one or more of alkali metal fluoride or alkaline earth metal fluoride except beryllium fluoride; (2) adding beryllium oxide into a BeF2-MFn molten salt system in a molten state; and (3) electrolysis is conducted, and solid-state metal beryllium is separated out on the cathode. According to the method, beryllium smelting intermediate product beryllium oxide is adopted as a raw material and dissolved in fused salt, beryllium ions and oxygen ions are dissociated, due to positive and negative phase attraction, the oxygen ions with negative electricity move to an anode and lose electrons, oxygen or carbon-containing gas is obtained, the beryllium ions with positive electricity move to a cathode, and the electrons are reduced into beryllium atoms to be deposited on the surface of the cathode; according to the method, the technological process is greatly shortened, and the direct recovery rate of beryllium is increased; and beryllium oxide is used as a raw material, carbon dioxide and oxygen are generated on the anode, and the method is more environment-friendly.

The invention relates to a feeding device of a biogas pool. The feeding device comprises a feeding box, a discharge valve, a driving unit, a stirring mechanism, a pressure sensor and a controller. A top cover is arranged at the top of the feeding box, a discharging hole is arranged in the bottom of the feeding box and is communicated with a discharging pipe, and a discharging pipe is arranged in the discharge pipe; the driving unit is mounted on the top cover, the stirring mechanism is located in the feeding box and comprises a stirring shaft and two stirring pieces, the stirring shaft is connected with the outlet shaft of the driving unit, the stirring pieces are respectively arranged on two sides of the stirring shaft, and a plurality of stabs used for crushing are arranged on outer walls of the stirring pieces; the pressure sensor is arranged in the biogas pool and is connected with the input end of the controller, the controller is mounted on the top cover with the output end being in communication connected with the discharging valve and capable of controlling opening of the discharging valve. By the arrangement, materials in the biogas pool are less prone to crusting, the materials can be automatically fed into the biogas pool according to biogas yield in the biogas pool, and the materials are favorably sufficiently utilized.

The invention discloses an acidic silicone sealant and a preparation method, the preparation method comprises the following steps: 1)preparing the raw materials; 2)adding 200-220 parts of glue 107, 2-6 parts of thixotropic agent in a glue cylinder, vacuum-pumping and stirring for 3-5 minutes; 3)sucking 10-20 parts of cross-linking agent in the glue cylinder after opening a material pumping valve, then closing the material pumping valve; stirring; 4)sucking partial gas phase white carbon black in the glue cylinder by using a membrane pump, stirring; 5)repeatedly operating for 1-4 times on the residual gas phase white carbon black according to step 4); 6)fully mixing 120-130 parts of 330 silicone oil and 0.09-0.15 parts of tin acetate to obtain a mixture; 7)sucking the mixture in the step 2) in the glue cylinder after stirring, then stirring again; keeping degree of vacuum as -0.09--0.1MPa during the stirring process; and 8)filling nitrogen and emptying after stirring in the step 7) to obtain the acidic silicone sealant. The acidic silicone sealant has the advantages of good cementability, strong sealing, difficult skinning and no sagging.

The invention discloses a CVI process method for quickly preparing a carbon / carbon composite material crucible side in batches, which restricts the gas flow area through the suit of crucible side prefabricated bodies of different sizes, and reasonably sets the fluid flow route so that the gas is limited in a narrow space. Flow in the area while controlling its residence time in the narrow gap. The advantage of narrow slit flow is that during the pyrolytic carbon deposition process, the surface of the preform is not easy to crust, so that the preform of the crucible side can be deposited to a relatively high density at one time. When the hydrocarbon gas flows through the first layer of crucible from top to bottom When helping the prefabricated body, cracking and pyrolytic carbon deposition reactions occurred in a high-temperature environment. When the gas reached the second layer of the crucible preformed body, part of the precursor in the gas source had been consumed. The combination of consumed precursors, set-up and supplementary gas can greatly improve the efficiency of carbon / carbon composite crucible side preparation.

The invention relates to the field of printing equipment, and specifically discloses an ink fountain, which includes a box body and an outer casing. A supporting seat is fixed inside the outer casing, and a hemispherical groove is arranged on the supporting seat. The box body includes a circular base, two fixed pieces and two movable pieces. The fixed piece is fixed on the upper end of the circular base, and the movable piece is rotated on the circular base. The way of rotation is: fixed on the circular base There are two rotating blocks, the rotating block is made of rubber, the two ends of the rotating block are fixedly connected with the two fixed pieces, and the two movable pieces are fixedly connected with the two rotating blocks respectively, and the movable piece can be sealed and connected with the fixed piece, The combination of all fixed pieces and movable pieces can form a sphere. An installation ring is fixedly arranged on the fixed piece, and a socket is arranged on the circumference of the installation ring, and a post is fixedly provided on the inner side of the top of the movable piece, and the post can be inserted into the installation ring. The purpose of the invention is to solve the technical problem that the ink remains on the inner wall of the ink fountain and causes waste.

The invention relates to a dispersion liquid film type absorption tower used for organochlorosilane concentrated acid hydrolysis. The absorption tower comprises a casing, wherein a liquid distribution plate is fixedly mounted between an upper seal head and an outer barrel body of the absorption tower; a splash-proof screen mesh is arranged on the liquid distribution plate; 3-10 layers of neatly arrayed film forming plates are arranged below the liquid distribution plate and are supported horizontally; an included angle between every film forming plate and the water level ranges from 15 degrees to 75 degrees; and film forming plates are arrayed in a staggered manner between adjacent layers. According to the absorption tower, appropriate reacting pressure (0.1 MPa to 0.5 MPa of gauge pressure) enables HCl gas generated by hydrolysis to have sufficient pressure; the dispersion liquid film type absorption tower enables an organic phase and an aqueous phase to be contacted in a film manner, so that the hydrolysis reaction is sufficient without emulsion; and a phase separator is used to separate hydrolysates and concentrated hydrochloric acid rapidly, the hydrolysates are prevented from polymerizing under the acid catalysis, and the qualities of the hydrolysates are improved.

The invention discloses a movable-cover-free cyclic feeding and discharging type methane-generating pit. The methane-generating pit is composed of a feeding hole, a feeding pipe, a pit body of the methane-generating pit, a prefabricated top sealing cover, a gas guide pipe, a water pressure chamber and a discharging hole, wherein the feeding pipe is mounted above the bottom of the pit body of the methane-generating pit and the other end of the feeding pipe is upward introduced out to be communicated with the feeding hole; a channel is arranged at the bottom of the pit body of the methane-generating pit and is communicated with the bottom of the water pressure chamber; the discharging hole is formed in the upper end of the water pressure chamber; the prefabricated top sealing cover is mounted at the upper part of the pit body of the methane-generating pit and is in sealed connection with the pit body of the methane-generating pit; the gas guide pipe is mounted on the prefabricated top sealing cover. The methane-generating pit disclosed by the invention is simple in construction, convenient to use, good in sealing performance and long in service life; material liquid is not easily crusted. By combining a sunlight greenhouse, the problem that gas is not generated in winter is solved; the movable-cover-free cyclic feeding and discharging type methane-generating pit has the characteristic that the gas is normally generated in a whole year.

The invention relates to a move bed reactor, formed by screw reaction bed and lifter. Wherein, the screw reaction bed is formed by outer cylinder, inner cylinder, liquid inlet, material outlet, divert plate, screw reaction bed, and base; the lifter is formed by water tank, driven wheel water outlet, lifting hopper, chain, driving wheel, motor, speed reducer, and frame; the lifter and screw reaction bed share one chassis. The invention is used in solid-liquid neutralization; especially the solid is block material. The invention has simple structure without block.

The invention relates to varnish for water-borne anti-counterfeiting ink and water-borne anti-counterfeiting ink prepared by varnish. The varnish for water-borne anti-counterfeiting ink consists of the following components in parts by weight: 20 to 25 parts of purified water, 40 to 45 parts of water-borne polyurethane resin, 5 to 7 parts of propylene glycol, 3 to 5 parts of a water-borne film forming plasticizer, 0.2 to 0.5 part of a defoaming agent, 0.5 to 1 part of a leveling wetting agent, 20 to 25 parts of nano-calcium carbonate and 0.5 to 1 part of a thickening agent CP-80. The preparation method of the varnish comprises the following steps of: stirring the purified water, the water-borne polyurethane resin, the propylene glycol, the film forming plasticizer, the A34 defoaming agent and the leveling wetting agent in a high-speed stirrer; adding the nano-calcium carbonate and the thickening agent while stirring, and keeping on stirring for 15 minutes until the mixture is completely and uniformly stirred. The water-borne anti-counterfeiting ink has the advantages of plug prevention, good weather resistance and good storage stability.

The invention relates to a concentrated acid hydrolysis system used for organochlorosilane concentrated acid hydrolysis, which utilizes a dispersion liquid film type absorption tower serving as a core and comprises accessory equipment such as a static mixer, an oil-water phase separator and a falling-film evaporator. The absorption tower comprises a casing, wherein a liquid distribution plate is fixedly mounted between an upper seal head and an outer barrel body of the absorption tower; a splash-proof screen mesh is arranged on the liquid distribution plate; 3-10 layers of neatly arrayed film forming plates are arranged below the liquid distribution plate and are supported horizontally; an included angle between every film forming plate and the water level ranges from 15 degrees to 75 degrees; and film forming plates are arrayed in a staggered manner between adjacent layers. According to the absorption tower, appropriate reacting pressure (0.1 MPa to 0.5 MPa of gauge pressure) enables HCl gas generated by hydrolysis to have sufficient pressure; the dispersion liquid film type absorption tower enables an organic phase and an aqueous phase to be contacted in a film manner, so that the hydrolysis reaction is sufficient without emulsion; and a phase separator is used to separate hydrolysates and concentrated hydrochloric acid rapidly, the hydrolysates are prevented from polymerizing under the acid catalysis, and the qualities of the hydrolysates are improved.

The invention discloses a film gluing mechanism with a page capable of being quickly replaced. The film gluing mechanism comprises a glue tank (34) and a glue tank cover plate (33). The glue tank (34)is filled with glue and is internally provided with a plurality of gluing blades (342) which are located on a gluing blade mounting plate (341). An alignment plate (32) and a stamp new page template(31) are arranged on the glue tank cover plate (33). Each gluing blade (342) comprises a blade body (3421), a blade holder (3422) and a blade base (3423). Anticorrosive magnets are arranged under theblade bases (3423), the positions of the gluing blades can be flexibly moved according to different gluing pages, and the gluing blades can be quickly adjusted to the needed pages. The gluing blade mounting plate (341) is made of a stainless iron mesh plate, and is driven to move up and down by a driving cylinder (39) in the working process, so that glue is leaked quickly instead of accumulating on the side edges of the gluing blade bodies. In the working process, the mesh plate plays a role in continuous glue stirring, and the glue can not crust easily.