Abstract:
The invention provides a production method of a conductive polymer, comprising a step of blending a polymer in a state of a melt viscosity of 600 Pa·s or less at a shear rate of 100 s−1 with a vapor grown carbon fiber in 1 to 15 mass at a mixing energy of 1,000 mJ/m3 or less, and a conductive polymer obtained thereby. Preferably, a vapor grown carbon fiber used has an outer fiber diameter of 80 to 500 nm, an aspect ratio of 40 to 1,000, a BET specific surface area of 4: to 30 m2/g, a do02 of 0.345 nm or less according to an X-ray diffraction method, and a ratio (Id/Ig) of 0.1 to 2 wherein Id and Ig each represent peak heights of a band ranging from 1,341 to 1,349 cm−1 and a band ranging from 1,570 to 1,578 cm−1 respectively, according to a Raman scattering spectrum. According to the invention, an excellent conductivity can be attained by compounding vapor grown carbon fiber in a smaller amount than in a conventional method.
Abstract:
An object of the present invention is to provide a process for producing a thermoplastic resin composition with a further improved hue, containing a neutralizing agent, and a compound (I).There is provided a process for producing a thermoplastic resin composition, comprising a second step of melting-kneading a melting-kneaded product obtained in a first step, and a compound (I). (wherein two R1s, two R2s, R4 and R5 each represent independently a hydrogen atom, an alkyl group etc., two R3s each represent independently a hydrogen atom or an alkyl group, X represents a single bond, a sulfur atom or a —CHR6— group, wherein R6 represents a hydrogen atom, an alkyl group etc., A represents an alkylene group or a *—COR7— group, wherein R7 represents a single bond or an alkylene group, and a symbol * represents a bond with an oxygen atom of a >P—O— portion,one of Y and Z represents a hydroxyl group, an alkoxy group or an aralkyloxy group, and the other of Y and Z represents a hydrogen atom, or an alkyl group.)
Abstract:
Provided is a process for continuous production of an organic-inorganic hybrid polymeric material in which inorganic substances are finely dispersed in a resin on a nanometer order, on an industrial scale without using any organic solvent or the like by using a simple apparatus. In the process, a thermoplastic resin having an acid number falling within a range from 1 to 200 mgKOH/g is melted and incorporated, to produce a composite composition, with an inorganic component formed from a metal alkoxide compound and/or a partial condensate thereof in the absence of an organic solvent capable of dissolving a thermoplastic resin. It is preferable to melt-knead by using as a production apparatus a continuous kneading apparatus including a twin screw extruder.
Abstract:
A method of making a carbon/graphite product using a coal tar pitch having a softening point in the range of about 150° C. to 250° C. Also, a carbon/graphite product having a softening point in the range of about 150° C. to 250° C. A method of making mesophase pitch is formed from quinoline insoluble free coal tar pitch distillate from a high efficiency evaporative distillation process.
Abstract:
The present disclosure is directed generally to methods for making fiber reinforced polypropylene composite pellets using pre-cut fiber fed to a compounding extruder by improved fiber feeder systems. One form of the method includes feeding into a compounding extruder at least 25 wt % polypropylene based polymer, from 5 to 60 wt % pre-cut organic fiber, and from 0 to 60 wt % inorganic filler; and extruding, cooling and pelletizing the resultant mixture of components to form fiber reinforced polypropylene composite pellets; wherein the pre-cut organic fiber is fed from a feeder including a feeder hopper, one or more conditioning augers/agitators, one or more metering augers below the feeder hopper, and a means for controlling the speed of the conditioning augers/agitators and metering augers; and wherein an article molded from the pellets has a flexural modulus of at least 2.07 GPa and exhibits ductility during instrumented impact testing. In another form, the feeder includes a feeder hopper, two or more counter-rotating metering rollers, one or more separating rollers below the metering rollers, and a means for controlling the speed of the metering rollers and separating rollers. In yet another form, a circle feeder may be used to feed the pre-cut fiber.
Abstract:
A method of producing a carbon fiber composite material including: (a) masticating an elastomer to reduce the molecular weight of the elastomer to obtain a liquid elastomer; (b) mixing the elastomer obtained in the step (a) and carbon nanofibers having an average diameter of 0.5 to 500 nm to obtain a mixture; (c) increasing the molecular weight of the elastomer in the mixture obtained in the step (b) to obtain a rubbery elastic mixture; and (d) mixing the rubbery elastic mixture obtained in the step (c) to disperse the carbon nanofibers in the elastomer by a shear force to obtain a carbon fiber composite material.
Abstract:
A process of dispersing at least one pigment into a carrier such as castor oil or a vegetable wax such as palm oil glyceride wax. The resulting dispersion exhibits excellent color development and is fluid at room temperature. Suitable pigments include FD&C, D&C and inorganic pigments.
Abstract:
A method for producing thermoplastic plastic capable of grasping information concerning the production process even after distribution. In a plurality of production processes including fusion of thermoplastic plastic 90, an information presenting substance 91 is added to the thermoplastic plastic sequentially and dispersed therein in each of the production process, wherein the information presenting substance is associated with information concerning each of the production process and radiates fluorescence upon an irradiation of an electromagnetic wave in a specified wavelength region.
Abstract:
Mass productivity and production stability of a polyphenylene ether composition are improved without deteriorating physical properties by means of a production process of polyphenylene ether composition comprising pre-melt compounding 20 to 98.5% by mass of a polyphenylene ether powder (I), 1 to 60% by mass of an inorganic filler powder (II) and 0.5 to 20% by mass of a thermoplastic elastomer having functional group (III), followed by melt compounding; wherein melt compounding is conducted using a twin-screw extruder having a total length of barrels of 800 mm or more, and a pre-melt compounding zone occupies 45 to 80 % of upstream of the twin-screw extruder based on the total length 100% of the twin-screw extruder when a drive side and a molten compound discharging side of the twin-screw extruder are regarded as upstream and downstream, respectively.
Abstract:
A method for producing a thermoplastic resin composition containing ultrafine particles on an industrial scale is provided. The method for producing the thermoplastic resin composition containing ultrafine particles includes mixing a metal-containing organic compound with a thermoplastic resin; and then heating the resulting mixture at a temperature of not lower than the decomposition starting temperature and lower than the complete decomposition temperature of the metal-containing organic compound to produce a composition containing ultrafine metal particles and/or ultrafine metal oxide particles having a number-average particle size of 0.1 to 80 nm dispersed in the thermoplastic resin.