36results about How to "Consistent viscosity" patented technology

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 relates to a high-efficiency slurry bed reactor, which belongs to the field of chemical machinery. It mainly consists of a solid-liquid separator, a variable-diameter inner sleeve, a reactor jacket, a heat exchanger with internal components, a gas riser with nozzles, an inner sleeve with heating and gas distribution functions, anti-blocking nozzles, nozzle mounting plates, Heat exchanger, heating coil outlet, secondary distribution plate, heating coil, etc. The beneficial effects of the present invention are that the distributor of the reactor is not easily blocked, the gas-liquid mixing is uniform, the gas-solid contact is sufficient, the reaction efficiency is high, the carrying amount of the catalyst and the solvent is small, the bias flow, channel flow and dead bed are not easy to occur, and the slurry flow rate Fast, the viscosity of the slurry in the reactor is basically the same, and the heat of reaction can be removed in time, especially in the stage of catalyst reduction and temperature rise, it is easy to realize the stable operation of the reactor. In addition, the distribution of the feed gas in the reactor along the axial direction is basically the same as the concentration of the catalyst. The catalyst can maximize its reactivity, and the space of the reactor can be fully utilized.

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 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 present disclosure discloses a sealing agent, a liquid crystal panel, a liquid crystal display device, and a fabricating method thereof. The sealing agent comprises a sealing agent matrix and graphene oxide. The graphene oxide not only functions to support substrates and enable electrical conduction, but also effectively prevents the phenomenon of liquid crystal molecules penetration from occurring. In this way, a liquid crystal panel which is prepared with the sealing agent as a bonding agent has excellent display effect.

The invention discloses a hyperbranched ultraviolet cured coating, which comprises the following raw materials by weight: 65-80 percent of acrylic ester terminal hyperbranched polyurethane, 15-33.5 percent of an active monomer diluent, 0.5-2 percent of a photoinitiator, and 1-3 percent of a flatting agent. Moreover, the invention also discloses a preparation method of the hyperbranched ultraviolet cured coating. The hyperbranched ultraviolet cured coating has the characteristics of being low in viscosity, high in reactivity, high in solubility, good in intermiscibility and the like, can improve the construction environment, can be rapidly cured and is good in physical and chemical properties of a coating film, and is suitable for indoor and outdoor utilization.

The invention discloses a continuous coating device for viscous materials. The continuous coating device comprises a control unit, an unreeling unit, a coating and printing unit and a follow-up unit.The unreeling unit, the coating and printing unit and the follow-up unit are arranged along the movement direction of a base material sequentially. The coating and printing unit comprises a compression roller, a drive silica gel roller and a drive steel roller which are stacked from top to bottom. The drive steel roller is soaked in a colloid tank filled with the viscous materials. The base material is arranged between the compression roller and the drive silica gel roller, is supported on a support roller, and moves along the direction of centrifugal force of the upper vertex of the drive silica gel roller under power traction to transfer a colloid film to the surface of the base material. The continuous coating device has the advantages that the viscous materials are extruded, pulled andextended by the two rollers at different speeds and in different directions to form a colloid surface with a certain thickness on the surface of a rubber roller, and are transferred to the surface ofthe continuously-fed base material by the compression roller to form a thin uniform coating, so that uniform coating of materials with micron-order and submicron-order thickness and more thinner materials on the surface of the base material is realized.

The invention relates to a two-component epoxy glue and a preparation method thereof. The two-component epoxy adhesive includes A component and B component, and the A component includes: epoxy resin, toughener, liquid flame retardant, powder flame retardant, diluent, defoamer, Reinforcing filler; the B component includes aliphatic amine curing agent, polyether amine, polyamide 650, and curing accelerator. The present invention screens the components of the epoxy adhesive so that the components can complement each other in performance and form a two-component epoxy adhesive system with superior comprehensive performance through synergistic cooperation, which significantly improves the toughness, anti-peel strength, The impact resistance and flame retardancy have also reached the UL94-V0 level, and the operating time is relatively suitable, and the curing time is short, which can realize continuous production.

The invention relates to a process method for preparing nylon12 by taking long-chain amino acid as a monomer. The process method comprises the following steps: first, putting 12-aminododecanoic acid and water serving as raw materials into a reaction kettle according to a mass ratio of 1 to (1 to 4); second, adding 0.01 to 1 percent of catalyst, 0.05 to 0.5 percent of antioxidant, 0.08 to 5 percent of molecular weight conditioning agent into the reaction kettle based on the mass of the raw materials in sequence to perform initial polymerization, and performing polymerization in a polymerization kettle; finally, increasing the viscosity in a co-rotating twin-screw extruder to prepare the nylon12 product. The preparation method is simple, and is easy to operate; the prepared nylon12 resin is free from coking, nodes, narrow molecular weight normal distribution, consistent viscosity and wide application range.

The invention discloses a high-viscosity warm-keeping antibacterial yarn. The high-viscosity warm-keeping antibacterial yarn consists of a fiber layer, a high-viscosity layer, an insulating layer andan antibacterial layer, wherein the high-viscosity layer permeates the inner part and the outer side of the fiber layer through soaking, the insulating layer is arranged outside the fiber layer, and the antibacterial layer coats the outer sides of the insulating layer and the fiber layer. The fiber layer and the insulating layer are separately prepared, and the yarn is formed by combination of doubling and twisting operation, so that uniform combination of the insulating layer and the fiber layer is guaranteed and the overall insulating performance of the yarn is better; loosing drum wound with the fiber layer is fixed through rotation in a soaking device, so that the fiber layer can be prevented from falling off in soaking and the stability of the fiber layer in soaking is improved; and meanwhile, a traction wheel is arranged on a rotary frame, and by combination with spraying of a spray head, the soaking device can soak and spray the yarn, so that the efficiency of the whole yarn production process is improved.