Abstract:
A method of forming a resin and filler composite system generally includes softening a polymer formed by a moisture sensitive chemical reaction of one or more monomers, and adding at least one or more fillers to the softened polymer to form a resin and filler composite system. Formation of foam is substantially inhibited when adding at least one or more fillers to the softened polymer.
Abstract:
The present invention provides a semiconductive polymer composition having (a) from 30 to 90 wt % of a polymer component, (b) from 10 to 60 wt % of carbon black and (c) from 0 to 8 wt % additives, based on the total semiconductive polymer composition, and wherein the composition comprises less than 23 particles per m2 having a width of larger than 150 μm at the half height of a particle protruding from the surface of the tape sample, less than 10 particles per m2 having a width of larger than 200 μm at the half height of a particle protruding from the surface of the tape sample, and preferably, about 0 particles per m2 having a width of larger than 500 μm at the half height of a particle protruding from the surface of the tape sample.
Abstract translation:本发明提供了一种半导电聚合物组合物,其具有(a)30至90重量%的聚合物组分,(b)10至60重量%的炭黑和(c)0至8重量%的添加剂,基于 总半导体聚合物组合物,并且其中所述组合物在从所述带样品的表面突出的颗粒的一半高度处包含小于23个颗粒/ m 2的宽度大于150μm,小于10个/ m 2的颗粒,其宽度为 在从胶带样品的表面突出的颗粒的一半高度处大于200μm,并且优选地,在从带的表面突出的颗粒的半高处具有大于500μm的宽度大于500μm的每μm2的约0个颗粒 样品。
Abstract:
[Problems] To produce a resin composition from a waste plastic material composed of a major portion of a thermoplastic resin and a small amount of incompatible solid foreign material.[Means for solving problems] A reclaimed resin composition which is produced by mixing a pulverized waste plastic material containing a major portion of a thermoplastic resin and a small amount of a non-thermoplastic solid foreign material with a light-shielding component and a light-shielding filler to give a mixture and melting the mixture under heating, and a sheet made from which shows a relationship between a lightness and a light transmittance satisfying the following condition: (A×B)≦4000 wherein A means a lightness of a sheet of 3 mm thick having been made of the reclaimed resin composition, and B means a total light transmittance (%) of a sheet of 50 μm thick having been made of the resin composition.
Abstract:
Polyglycolic acid and polylactic acid having a weight-average molecular weight of at most 50,000 are melt-kneaded in the presence of a thermal stabilizer to obtain a polyglycolic acid-based aliphatic polyester composition. The aliphatic polyester composition alleviates the too fast crystallizability of polyglycolic acid which has been problematic in forming or molding of polyglycolic acid alone or in combination with another thermoplastic resin, thus showing a crystallization speed which has been lowered and can be controlled in a wide range.
Abstract:
The invention relates to a process for preparing a material consisting of a PVC matrix reinforced with clay comprising the following successive stages: (1)) preparation of a modified clay by mixing a natural clay with a non-volatile solvating compound, the mixture being carried out by applying at least one of the following mechanical stresses: compression, at a speed of between 0.01 and 0.05 m/s; shear, at a speed of between 0.05 and 5 m/s; friction, at a speed of between 0.05 and 5 m/s; attrition, at a speed of between 2 and 4 m/s; (2) incorporation of the modified clay into the PVC by mixing in the molten state, the implementing conditions being such that: the speed of compression is between 0.1 and 5 m/s; the speed of shear is between 0.05 and 5 m/s.
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.