摘要:
A method is provided that can very rapidly produce a liquid silicone rubber base in which even microfine electrically conductive filler with specific surface of at least 0.5 m2/g will be homogeneously dispersed in liquid organopolysiloxane without small lump or clump formation. The method for the continuous preparation of liquid silicone rubber base, including the steps of continuously supplying to a continuous mixing apparatus (A) 100 weight parts polyorganosiloxane that has a viscosity at 25° C. of 100 to 500,000 mPa·s comprising at least 2 silicon-bonded alkenyl groups in each molecule, (B) 0 to 200 weight parts electrically nonconductive inorganic filler, and (C) 0.1 to 700 weight parts electrically conductive filler with a specific surface of at least 0.5 m2/g wherein the combined quantity of components (B) and (C) is from 5 to 700 weight parts where the continuous mixing apparatus has a cylindrical body casing with a material feed opening at the top of the body casing, a mixture discharge outlet at the bottom of the body casing, and a rotating disk within the casing such that the ratio of the diameter of the rotating disk to the inside diameter of the cylindrical body casing is 0.80 to 0.95; mixing components (A) through (C) therein by the rotation of the rotating disk to form a mixture; and discharging the mixture through the said discharge outlet.
摘要:
A continuous kneader includes a screw shaft rotatable within a cylinder, and rotatable disks fixedly mounted on the shaft for rotation therewith. Stationary disks are arranged in face-to-face opposed relation to the rotatable disks. Each of the opposed surfaces of the disks is formed with alternating ridges and furrows. The material is passed between the opposed disk surfaces while being subjected alternately to compressive and shearing forces. Grooves are formed in the inner peripheral surface of the stationary disk and a screw section is carried on the adjacent outer peripheral surface of the drive shaft to promote the axial advance of the material through the device.
摘要:
A method for treating a mixture in a single-shaft or multi-shaft mixer (M), especially a kneader-mixer, especially for preparing a spinning solution. A solvent or solvent mixture is added to the product over the length of a product chamber in order to reduce a viscosity of the solvent or of the mixture and to increase an evaporative capacity. The viscosity of the solution or of the mixture is determined and/or modified in predetermined locations in the product chamber.
摘要:
Process for the manufacture of a self-sealing elastomer composition comprising at least one diene elastomer, one hydrocarbon resin with a given softening temperature and one liquid plasticizing agent, characterized in that it comprises the following successive stages: (a) incorporating the hydrocarbon resin in the diene elastomer by kneading these components in a mixer at a temperature or up to a temperature referred to as “hot compounding” temperature greater than the softening temperature of the hydrocarbon resin, in order to obtain a masterbatch; (b) incorporating the liquid plasticizing agent in the masterbatch by kneading the combined mixture in the same mixer or in a different mixer, in order to obtain the self-sealing composition; and (c) forming the said self-sealing composition dimensionally.
摘要:
A mixer for mixing multi-phase fluids with various substances. The mixer includes a rotor with a plurality of blades extending within a chamber through which the multi-phase fluids and substances continuously flow while being mixed. The chamber of the mixer includes a single rib for generating turbulence and may be eccentrically located with respect to the axis of rotation of the rotor. In addition, the rotor blades and the rib may be separately angled with respect to the axis of rotation of the rotor.
摘要:
A method for producing powder mixtures capable of inducing an even more intimate, microhomogeneous intermixing in a heterogeneous powder composed of at least two types of powders. The method is effective even for the mixing of an aggregable powder and a nonaggregable powder. According to the method, a heterogeneous powder composed of at least two type of powders that have been preliminarily mixed by stirring is introduced into an inlet while a rotating axle is turning and is axially transported within a cylinder by a screw. As the heterogeneous powder passes between rotating disks and fixed disks, it is subjected to a highly efficient mixing by compression and shear forces due to a sliding-shear action exerted between depressions and elevations installed on the opposing surfaces of the rotating disks and fixed disks. The mixture passes in sequence through multiple stages of the rotating and fixed disks. A powder mixture, which has been microhomogeneously interdispersed, is discharged from the outlet.
摘要:
A method for continuously coagulating a rubbery polymer latex to obtain a polymer solid, characterized in that into a coagulator composed of (a) a cylindrical body having at one end a nozzle for feeding rubbery polymer latex and a nozzle for feeding coagulant solution, and having at the other end a discharging nozzle, (b) a stirrer mounted rotatably along the central axis of the cylindrical body, said stirrer having several stages of agitating blades, and (c) stationary blades fixed to the wall of the cylindrical body at the spaces between the stages of agitating blades, are continuously fed the rubbery polymer latex and a coagulant solution through the above-mentioned respective nozzles so as to collide against each other, and stirred during their movement from the one end of the coagulator to the other end to coagulate the latex. By this method, there can be obtained molded porous polymer crumbs having an intended size.
摘要:
SHOWN HEREIN A MIXING DEVICE FOR RECEIVING PLURAL COMPONENT FLOWABLE MATERIALS AND MIXING THEM TOGETHER AND DISPENSING THEM. A MIXER, WHOSE DESIGN PROVIDES FOR LARGE FACE-TO-FACE AREA OF CLOSELY SPACED RELATIVELY MOVING INTERRUPTED SURFACES, OFFSETS THE OTHERWISE HIGH PRESSURE DROP ACROSS IT BY PROVIDING A PUMPING ACTION WITHIN THE MIXER ASSISTING THE PASSAGE OF THE COMPONENTS BEING MIXED THERETHROUGH. THE MIXING DEVICE FURTHER PROVIDES FOR A QUICK DISCONNECT OF THE MIXER AND ITS ASSOCIATED MOTOR AND MONITOR AS AN ASSEMBLY FROM THE REMAINDER OF THE DEVICE TO ALLOW FLUSHING OF THE MIXER. RACK AND PINION OPERATION OF THE PLURAL COMPONENT DELIVERY VALVES ASSURES SIMULTANEOUS START AND STOP OF THE COMPONENTS'' FLOW.
摘要:
Device and method for dispersing solids, liquids and gases in an extruder, having at least one shaft (1) and one housing (2), wherein at least one disk (4) with recesses is attached to the shaft, which at least one disk co-rotates with the shaft, and a non-co-rotating disk (3) is arranged immediately adjacent to the disk either in a product flow direction or counter to the product flow direction, which non-co-rotating disk likewise has recesses, and wherein the co-rotating disk is connected to the rotating shaft and has a gap (14) with respect to the housing, and the non-co-rotating disk is connected to the housing and has a gap (15) with respect to the rotating core shaft.