A process for manufacturing an ultra-high thermally conductive graphene curing bladder includes the following steps: (1) pre-mixing an ultra-high thermally conductive graphene with rubber to obtain a pre-dispersed graphene master batch, performing a granulation process or a cutting process on the pre-dispersed graphene master batch to obtain a granular solid or a sheet solid, mixing the solid in a rubber mixing mill to obtain an ultra-high thermally conductive graphene rubber compound; (2) extruding, by an extruding machine, the ultra-high thermally conductive graphene rubber compound into a rubber strip of a desirable size; weighing and fixed-length processing the rubber strip of the ultra-high thermally conductive graphene rubber compound to obtain a rubber blank, placing the rubber blank into a pressing type curing bladder mold, closing the mold, pressurizing, heating and curing to obtain a finished product of the ultra-high thermally conductive graphene curing bladder.

An extrusion equipment adapted for supercritical foaming and mixing of a raw material includes a mixing unit, an injection unit for injection of supercritical fluid into the mixing unit, and an extrusion unit for extrusion of the raw material. The mixing unit includes a tube for input of the raw material, and a propelling screw rod and an auxiliary screw rod that are disposed side by side in the tube and that cooperatively compress and propel the raw material. The auxiliary screw rod rotates at a speed at least twice that of the propelling screw rod and in a direction opposite to that of the propelling screw rod.

The invention relates to a silane, to a rubber mixture comprising the silane and to a vehicle tire comprising the rubber mixture in at least one component. The inventive silane has the following formula I)
(R.sup.1).sub.oSiR.sup.2X-A-Y-[A-Y-].sub.m-A-S.sub.k-A-[-Y-A].sub.mY-A-XR.sup.2Si(R.sup.1).sub.o,
wherein, according to the invention, the silane has spacer groups between the respective silyl groups and the S.sub.k moiety which have at least two aromatic groups A and the linking units X and Y, wherein the groups X within a molecule may be identical or different from each other and are selected from the groups HNC(O), C(O)NH, C(O)O, OC(O), OC(O)NH, HNC(O)O, R.sup.3NC(O)NR.sup.3, R.sup.3NC(NR.sup.3)NR.sup.3, R.sup.3NC(S)NR.sup.3, wherein at least one R.sup.3 within each group X is a hydrogen atom; and wherein the groups Y within a molecule may be identical or different from each other and are selected from the groups HNC(O), C(O)NH, C(O)O, OC(O), OC(O)NH, HNC(O)O, R.sup.4NC(O)NR.sup.4, R.sup.4NC(NR.sup.4)NR.sup.4, R.sup.4NC(S)NR.sup.4, wherein at least one R.sup.4 within each group Y is a hydrogen atom. The inventive rubber mixture comprises at least one inventive silane.

The invention relates to a sulfur-crosslinkable rubber mixture, to a vulcanizate thereof and to a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents: at least one diene rubber; and 10 to 300 phr of at least one silica; and 1 to 30 phf of at least one silane A having general empirical formula A-I) and/or A-XI)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.qS.sub.x(R.sup.3S).sub.qR.sup.2Si(R.sup.1).sub.o;A-I)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.xSX; andA-XI) 5 to 30 phf of at least one silane B having general empirical formula B-I)

(R.sup.1).sub.oSiR.sup.4SR.sup.4Si(R.sup.1).sub.oB-I) wherein x is an integer from 2 to 10, q is 1, 2 or 3 and s is 0, 1, 2 or 3 and X is a hydrogen atom or a C(O)R.sup.8 group wherein R.sup.8 is selected from hydrogen C.sub.1-C.sub.20-alkyl groups, C.sub.6-C.sub.20-aryl groups, C.sub.2-C.sub.20-alkenyl groups and C.sub.7-C.sub.20-aralkyl groups.

The invention relates to a sulfur-crosslinkable rubber mixture, to a vulcanizate thereof and to a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents: at least one diene rubber; and 10 to 300 phr of at least one silica; and 1 to 30 phf of at least one silane A having general empirical formula A-I)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.qSX; andA-I) 0.5 to 30 phf of at least one silane B having general empirical formula B-I)

(R.sup.1).sub.oSiR.sup.2(SR.sup.3).sub.uSR.sup.2Si(R.sup.1).sub.oB-I) wherein q is 1, 2 or 3; and u is 1, 2 or 3; and X is a hydrogen atom or a C(O)R.sup.8 group wherein R.sup.8 is selected from hydrogen C.sub.1-C.sub.20-alkyl groups, preferably C.sub.1-C.sub.17, C.sub.6-C.sub.20-aryl groups, preferably phenyl, C.sub.2-C.sub.20-alkenyl groups and C.sub.7-C.sub.20-aralkyl groups.

The invention relates to a sulfur-crosslinkable rubber mixture, to a vulcanizate thereof and to a vehicle tire. The sulfur-crosslinkable rubber mixture contains at least the following constituents: at least one diene rubber; and 10 to 300 phr of at least one silica; and 1 to 30 phf of at least one silane A having general empirical formula A-I)

(R.sup.1).sub.oSiR.sup.2SH; andA-I) 0.5 to 30 phf of at least one silane B having general empirical formula B-I)

(R.sup.1).sub.oSiR.sup.3(SR.sup.4).sub.u(SR.sup.5).sub.vSi(R.sup.1).sub.o,B-I) wherein u is 0, 1, 2 or 3 and v is 0 or 1.

A screw extruder with rollers includes a screw which extrudes a material; a casing which houses the screw and which is provided with a charging port for the material; and a pair of an upper roller and a lower roller which are arranged in front of the casing and mold the material extruded by the screw into a sheet, in which one of the upper roller and the lower roller has both end portions in an axial direction, and a main body portion between the both end portions, and a cross-section of the main body portion perpendicular to the axial direction has an oval shape.

A process for manufacturing an ultra-high thermally conductive graphene curing bladder includes the following steps: (1) pre-mixing an ultra-high thermally conductive graphene with rubber to obtain a pre-dispersed graphene master batch, performing a granulation process or a cutting process on the pre-dispersed graphene master batch to obtain a granular solid or a sheet solid, mixing the solid in a rubber mixing mill to obtain an ultra-high thermally conductive graphene rubber compound; (2) extruding, by an extruding machine, the ultra-high thermally conductive graphene rubber compound into a rubber strip of a desirable size; weighing and fixed-length processing the rubber strip of the ultra-high thermally conductive graphene rubber compound to obtain a rubber blank, placing the rubber blank into a pressing type curing bladder mold, closing the mold, pressurizing, heating and curing to obtain a finished product of the ultra-high thermally conductive graphene curing bladder.

The invention relates to a process for the production of thermoplastic moulding compounds, in particular for the production of acrylonitrile-butadiene-styrene (ABS), wherein at least a first reagent (11) and a second reagent (12) of the thermoplastic moulding compounds are fed to a loop conduit (29) which comprises a static mixer (36), wherein the reagents (11, 12) are pressed in loops through the loop conduit (29) and passing the static mixer (36), whereby the reagents (11, 12) are dispersed to form a dispersion (15) in the static mixer (36). The invention also relates to a thermoplastic moulding compound that is produced by the inventive process.

A method for operating an extruder that has a screw, including the steps: (a) detection of a formulation identifier which is associated with material to be extruded and which encodes at least one operating variable, from which an ideal screw rotational frequency of the screw, which is to be set for the extrusion process, can be determined, (b) time-dependent detection of a throughput parameter, from which a throughput of the extruder can be deduced, (c) detection of a non-conformance point in time, at which the material can no longer be produced with a predefined quality, owing to excessive wear of the extruder, and (d) calculation of a limit throughput parameter from the throughput parameter, linking of the limit throughput parameter to the formulation identifier, and storing of the limit throughput parameter.