36results about How to "Consistent viscosity" patented technology

The invention relates to a kind of efficient reactor with paddle bed, which belongs to the chemical machinery field. It is composed mainly with the solid and liquid separator, the inner tube that the track is changeable, the reactor cover, the heat exchanger with an internal component, the riser with the spray nozzle, the inner-tube tank that has the heating and gas distribution function, the spray nozzle for protecting from choking, the mounting plate of the spray nozzle, the heat exchanger, the outlet of the heating coil, the quadratic distribution plate, the heating coil and so on. The beneficial effictiveness of the invention can be described as follows: the reactor and the distributor can't block up easily; the gas and the liquid can be mixed evenly; the reactive efficiency is high; the carrying amount of the catalyst and the solvent is so bit that it can not occur the bias current, channeling and dead bed; the size running quickly, and the viscosity of the size in the reactor is identical generally; the reactor can be shifted out in time, and especially in the stage of the catalytic, reducing and intensifying, it can realize to operate the reactor steadily; otherwise, the distribution of the virgin gas in the reactor along the axle is in agreement on the concentration of the catalyst, so that can make the catalyst have the most activity, and then it can be make the full use of the reactor space.

The invention discloses a hot melt pressure sensitive adhesive. The main raw materials (by weight parts) of the hot melt pressure sensitive adhesive comprises the following component by weight: 3 to 5 portions of SBS168, 4 to 6 portions of SBS796, 2 to 5 portions of SIS822, 15 to 25 portions of SIS1105, 4 to 12 portions of terpene T-1095, 4 to 12 portions of terpene-modified resin T-100, 20 to 30 portions of rosin-modified resin 138<#>, 16 to 28 portions of rubber-softening oil KN4010, 2 to 6 portions of polyisobutylene PB2400, and 0.2 to 0.6 portions of antioxidant BHT. With the modified formulation of raw materials, the cost of the hot-melt pressure-sensitive adhesive is greatly reduced and the adhesion property of the hot-melt pressure-sensitive adhesive is better than the similar products.

The invention discloses a method for preparing perfluoro sulfonic resin with abandoned ion exchange membrane in alkali-chloride industry, comprising following steps: swelling said abandoned ion with lower alcohol, emulsifying it with emulsion machine to resin particle, adding alcohol/ water solvent and resin particle into autoclave, dissolving resin particle under high temperature and pressure and protection of nitrogen; getting solid mixture of perfluoro sulfonic resin and solution, separating with solid-liquid separation method and getting perfluoro sulfonic resin solution and solid perfluoro sulfonic resin. The resin solution is characterized by transparent, low content of foreign matter, high purity, similar property to that of Nafion EW 1100 solution, usage in field of mending ionic membrane pinhole and other mechanical damage, preparation of fuel battery proton exchange membrane and stereoscopic electrode and chemical catalysis.

The invention discloses a device for coating graphene on surfaces of metal foils. The device comprises a control unit, and an unwinding unit, a coating printing device, a baking unit and a winding unit arranged in sequence in a moving direction of the metal foils; the metal foils are aluminum foils or copper foils; the coating printing device comprises a pressing roller, a driving silica gel roller and a driving steel roller laminated from top to bottom; the driving silica gel roller and the driving steel roller are rotated in opposite directions by keeping a micron gap; the driving steel roller is dipped in a colloid pool with viscous materials; and a substrate is arranged between the pressing roller and the driving silica gel roller. The device realizes uniform spraying of materials with submicron thicknesses and thinner layers on the surface of the substrate to meet the thickness requirements of the graphene coated on the metal foils, and achieves excellent adhesion to effectively reduce the contact resistance between carbon particles and the metal foils.

The present invention relates to a process for the production of silylated polyurethane resins free of unreacted residual isocyanate possessing consistent viscosity and stability and products therefrom.

The invention discloses a three-roller coating printing unit for continuously coating the surface of a base material with a viscous material. The unit comprises a pressing roller, a driving silica gel roller and a driving steel roller which are stacked from top to bottom. The driving silica gel roller and the driving steel roller rotate in opposite directions, and a micron order gap is kept; the driving steel roller is soaked with a colloid pond containing the viscous material, the base material is arranged between the pressing roller and the driving silica gel roller, and the base material is supported on the supporting roller and moves in the centrifugal force direction of the top vertex of the driving silica gel roller under power traction. Under the effect that the viscous material is extruded, stretched and extended through rotating rollers with the two different rotating speeds and the opposite directions, a rubber layer of the certain thickness is formed on the surface of the rubber covered roller, the material is transferred to the surface of the continuously running base material by means of the pressing roller, the thin and uniform coating is formed, and materials of the micro order and submicron order thickness and thinner materials can be uniformly sprayed to the surface of the base material.

The invention relates to an aramid-spandex sheath-core composite fiber and a preparation method thereof. The method is characterized in that a sheath layer spinning solution and a core layer spinning solution are simultaneously extruded in a sheath-core structure and subjected to dry spinning through a spinneret plate assembly of which a spinneret orifice is in a concentric circle form. A sheath layer of the aramid-spandex sheath core composite fiber is made of an aramid 1313 and a core layer is made of spandex; the section of the fiber is of a concentric circle solid structure; the sheath layer accounts for 5-20% of total weight of the fiber; the prepared aramid-spandex sheath core composite fiber has high resilience and also has high temperature resistance, chemical resistance and wear resistance; and meanwhile, the problems that the sheath layer aramid 1313 fiber is not easy to dye, the sheath-core composite fiber is difficult to spin and mold and the contact interface of the sheath layer and the core is easy to peel off are solved.

The invention discloses a preparation method of a graphene/nylon/elastomer nano composite material. The preparation method comprises the following steps: at first, pre-dispersing graphene in molten polyamide monomers; then adding a catalyst and an activator into the mixed melt of pre-dispersed graphene/polyamide monomers, mixing to obtain a blended solution; adding the blended solution into an extruder, carrying out reactions, extruding the reaction products, carrying out granulation to obtain the master batch of a graphene/nylon nano composite material; adding the abovementioned master batch and elastomer master batch into the extruder, melting, blending, and extruding the mixture to obtain the graphene/nylon/elastomer nano composite material. Graphene is evenly dispersed in the graphene/nylon/elastomer nano composite material. The industrial massive production of the nano composite material is realized. The phenomenon that the toughness of a composite material degrades due to added graphene is greatly relieved. Compared with pure nylon, the mechanical properties such as strength, toughness, modulus, and the like, and thermal properties such as thermal degradation temperature and the like, of the provided nano composite material are prominently improved, and thus the application range is enlarged.

A process of forming a gel for gel packed transmission cable comprising the steps of dissolving a high molecular weight polymer in oil and thereafter through the use of a rotor and stator mixer effectively incorporating a colloidal silica(s) into the polymer in oil composition. Compositions made from this process having optimized viscosity are also claimed.

The invention discloses cheap and practical garment fabrics. The original materials comprises following fibers in a blended manner of: 30-50 parts by weight of cotton fibers, 20-40 parts by mass of modal fibers, 10-20 parts by mass of acetate rayon fibers, 10-30 parts by mass of chitin fibers, 5-10 parts by mass of dacron fibers, 5-15 parts by mass of spandex and 10-15 parts by mass of acrylic fibers. The invention relates to the technical field of garment processing. According to the invention, raw materials comprise following fibers in a blended manner of: 30-50 parts by weight of cotton fibers, 20-40 parts by mass of modal fibers, 10-20 parts by mass of acetate rayon fibers, 10-30 parts by mass of chitin fibers, 5-10 parts by mass of dacron fibers, 5-15 parts by mass of spandex and 10-15 parts by mass of acrylic fibers; the fabrics have the advantages of polyester fiber garments, and have antimicrobial and radio-resistance functions and various kinds of 'green and health care' functions, are safe, effective, and are non-toxic, harmless and non-polluted to human body and environment; requirements of green textiles are met; and the fabrics are cheap, so buying ability of more buyers is met, and sales quantity is improved.

The invention belongs to the technical field of food. The invention provides a vacuum freeze-drying method of freeze-dried instant rice noodles. According to the freeze-dried instant rice noodles disclosed by the invention, the contradiction that the rice starch increases pores and inhibits retrogradation is relieved by adopting a process step of slowly drying at a freezing temperature, so that the prepared freeze-dried instant rice noodles are high in rehydration rate and short in rehydration time, and the instant rice noodles only need to be soaked for 5-10 minutes; according to the freeze-dried instant rice noodles prepared by the vacuum freeze-drying method disclosed by the invention, the texture characteristics of hardness, viscosity, elasticity, adhesiveness and chewiness after rehydration are basically consistent with the taste of fresh and wet rice noodles. No modified material is added when the rice noodles are prepared, meanwhile, high efficiency and energy conservation are realized by adopting the temperature of-40 DEG C to 45 DEG C in the vacuum freeze-drying process, and the processing cost of the freeze-dried instant rice noodles is reduced.

Processes are disclosed for the purification and recovery of polysaccharide gums from an aqueous solution, particularly xanthan gum from a fermentation broth. An aqueous solution of at least one polysaccharide gum is mixed with a non-solvent stream comprising water and a subprecipitant level of a non-solvent of the polysaccharide gum. The mixture is concentrated to increase the polysaccharide gum concentration, and optionally undergoes a heat treatment. Additional non-solvent is added to the concentrated mixture to precipitate the polysaccharide gum. The precipitated gum is dried after being separated from the liquid component of the mixture. The removed liquid component can be recycled to the earlier step in the process in which the polysaccharide gum solution is mixed with the non-solvent stream.

The invention relates to a dispensing process, in particular, a dispensing process during chip mounting. A constant-temperature heater is used for carrying out constant-temperature heating control onthe tube of conductive silver paste, it is guaranteed that the temperature of the conductive silver paste is kept at 33-35 DEG C and is close to final working temperature 35 DEG C in a using process,it is guaranteed that the viscosity of the conductive silver paste is relatively consistent in a working process, and therefore, it is guaranteed that a dispensing amount is consistent in a dispensingoperation process. And meanwhile, by means of standardizing operation steps and process conditions, the stability of dispensing operation is ensured, the stability and reliability of chip mounting quality are finally ensured, and the rate of finished products is increased.

The invention relates to a dispensing process, in particular, a dispensing process during chip mounting. A constant-temperature heater is used for carrying out constant-temperature heating control onthe tube of conductive silver paste, it is guaranteed that the temperature of the conductive silver paste is kept at 33-35 DEG C and is close to final working temperature 35 DEG C in a using process,it is guaranteed that the viscosity of the conductive silver paste is relatively consistent in a working process, and therefore, it is guaranteed that a dispensing amount is consistent in a dispensingoperation process. And meanwhile, by means of standardizing operation steps and process conditions, the stability of dispensing operation is ensured, the stability and reliability of chip mounting quality are finally ensured, and the rate of finished products is increased.

The invention provides a special glue melting device for high-viscosity and high-softening-point hot melt glue. The special glue melting device comprises a glue melting furnace body and a heating system; the heating system is arranged in the glue melting furnace body; the glue melting furnace body is sequentially provided with an upper-section glue melting area, a middle-section glue homogenizingarea and a lower-section glue storage area from top to bottom; the upper-section glue melting area is provided with a melting cutter assembly; a transverse flow guiding plate assembly is arranged in the middle-section glue homogenizing area; and the lower-section glue storage area is provided with a shunting cutter assembly and a vertical multi-wing flow guiding assembly. The glue melting device is sequentially provided with the upper-section glue melting area, the middle-section glue homogenizing area and the lower-section glue storage area from top to bottom; a material block enters the upper-section glue melting area from a glue inlet, is sheared by the melting cutter assembly and enters the middle-section glue homogenizing area; the transverse flow guiding plate assembly in the middle-section glue homogenizing area realizes static stirring of the melt glue so that the melt glue is uniform; and the melt glue enters the lower-section glue storage area to be stored. According to the glue melting device, the glue melting amount can reach 0.75-1.5 kg/min under the control of glue melting heating temperature of 180 DEG C to 235 DEG C.

The invention discloses an anti-precipitation slurry pool, and belongs to the field of casting equipment. The anti-precipitation slurry pool comprises a support, a plurality of dip-coating pools installed on the support and provided with upward arc-shaped openings, and a stirring scraping mechanism fixed to the support and carrying out stirring scraping on the interiors of the dip-coating pools, wherein the stirring scraping mechanism comprises a transmission mechanism and first scraping plates; the transmission mechanism is installed on the support; the first scraping plates are installed inthe dip-coating pools and connected with the transmission mechanism; and the transmission mechanism drives the first scraping plates to carry out reciprocating swinging to carry out stirring and scraping on a slurry in the dip-coating pools. According to the anti-precipitation slurry pool, through the arrangement for the stirring scraping mechanism, the problem that a slurry in dip-coating pools in an existing slurry pool is liable to be sedimented and precipitated, is solved.