A production line (200) for performing multi-pass mixing sequences of rubber mixtures has at least one first mixing line (200A) that produces a masterbatch and at least one second line (200B) that performs a final mixing process during a final pass of a multi-pass rubber mixing sequence. A mixing process produces a variety of rubber mixtures in a production line of the type disclosed.

A method for producing a molding compound having improved surface properties is provided. The method relates to, in particular, a molding compound comprising a polycarbonate and at least one reinforcing filler, preferably selected from the group including titanium dioxide (TiO.sub.2), talc (Mg.sub.3Si.sub.4O.sub.10(OH).sub.2), dolomite CaMg[CO.sub.3].sub.2, kaolinite Al.sub.4[(OH).sub.8|Si.sub.4O.sub.10] and wollastonite Ca.sub.3[Si.sub.3O.sub.9], preferably selected from the group including titanium dioxide (TiO.sub.2) and talc (Mg.sub.3Si.sub.4O.sub.10(OH).sub.2). The total amount of reinforcing filler is 3 to 20 wt. %, preferably 4.5 to 15 wt. %, each relative to the total mass of the molding compound, the molding compound having improved properties being produced using at least one master batch produced according to the method.

A method for producing a molding compound having improved surface properties is provided. The method relates to, in particular, a molding compound comprising a polycarbonate and at least one reinforcing filler, preferably selected from the group including titanium dioxide (TiO.sub.2), talc (Mg.sub.3Si.sub.4O.sub.10(OH).sub.2), dolomite CaMg[CO.sub.3].sub.2, kaolinite Al.sub.4[(OH).sub.8|Si.sub.4O.sub.10] and wollastonite Ca.sub.3[Si.sub.3O.sub.9], preferably selected from the group including titanium dioxide (TiO.sub.2) and talc (Mg.sub.3Si.sub.4O.sub.10(OH).sub.2). The total amount of reinforcing filler is 3 to 20 wt. %, preferably 4.5 to 15 wt. %, each relative to the total mass of the molding compound, the molding compound having improved properties being produced using at least one master batch produced according to the method.

The present disclosure relates to an apparatus for mixing a resin composition for manufacturing a polishing pad including: a raw material mixer preparing a mixed raw material including a prepolymer and a foaming agent; a filter connected to the raw material mixer for filtering the mixed raw material; and a pad composition mixer connected to the filter to prepare a curable mixture including the mixed raw material after being filtered and a curing agent, wherein the raw material mixer includes a plurality of rotators having different rotation speeds.

The present disclosure relates to an apparatus for mixing a resin composition for manufacturing a polishing pad including: a raw material mixer preparing a mixed raw material including a prepolymer and a foaming agent; a filter connected to the raw material mixer for filtering the mixed raw material; and a pad composition mixer connected to the filter to prepare a curable mixture including the mixed raw material after being filtered and a curing agent, wherein the raw material mixer includes a plurality of rotators having different rotation speeds.

The kneading rotor according to one aspect of the present disclosure is a kneading rotor for a kneading machine, comprising a base made of carbon steel or alloy steel for machine structure, a padded layer made of austenitic stainless steel on at least part of a surface of the base and has a hard chromium plated layer on at least part of a surface of the padded layer.

In the field of mixing rubber mixtures, the invention is directed to a rotor (100) for use in an internal mixer having a mixing vessel in which the rotor rotates, the rotor having one or more blades (104), each blade having a tip (104a) with a profile having a predefined curvature; and an anti-wear device detachably fixed to the tip (104a) of at least one blade, the anti-wear device including a plate (110) with a profile defined by a lower surface (112) with a curvature complementary to that of the tip 104a and an upper surface (114) with a curvature complementary to that of a wall of the vessel to define, between them, a zone of minimum distance that allows passage of the mixture between the plate (110) and the wall of the vessel. The invention is also directed to an internal mixer having at least one mixing vessel in which the disclosed rotor (100) rotates.

A temperature sensor (10) for measuring a temperature of a mixture being mixed in an internal mixer includes a fixed part having a substantially cylindrical body (12) and a removable part (16) of domed shape arranged inside a conduit of the body. The temperature sensor also includes a blowing stem (14) in communication with a source of compressed air that extends along a conduit (12c) of the body and terminates at an outlet end (14a) disposed in the removable portion (16), whereby the compressed air exits the blowing stem (14) and passes uninterruptedly through a temperature measuring element or elements at a contact end (16b) of the removable portion. A combination of an internal mixer and a temperature sensor for measuring a temperature of a mixture being mixed in the internal mixer is also disclosed.

The invention discloses a carbon nanotube/polyetherimide/thermosetting resin dielectric composite and a preparation method therefor. 100 parts by weight of polyetherimide and 1-7 parts by weight of carbon nanotube are mixed uniformly in an Haake torque melt cavity to obtain a carbon nanotubes/polyetherimide composite; 20 parts of the carbon nanotube/polyetherimide composite are dissolved in 100-150 parts of dichloromethane, then the mixed solution is added in 100 parts of molten thermocurable thermosetting resin, mixing, and heat preserving, stirring are performed until a mixture is formed in a uniform state, and curing and post-treating are performed to obtain a carbon nanotube/thermosetting resin dielectric composite, wherein the substrate thereof has a typical reverse phase structure, while the carbon nanotubes are dispersed in a polyetherimide phase. The composite has a relatively low percolation threshold, a high dielectric constant and a low dielectric loss. The preparation method of the present invention has a simple process and is suitable for large-scale production.

Provided is a molding material for a material of a molded article including: a biomass material obtained from a water-containing organic matter; and a thermoplastic or a thermosetting resin, the biomass material having a moisture content of 20% or less, a bacterial count of mesophilic aerobic bacteria of 10.sup.5/g or less, and a maximum exothermic peak by a differential thermal analysis method of 300° C. or higher.