摘要:
The invention relates to the fields of polymer chemistry and relates to a device for the continuous modification of polymers that can be processed into molded articles or semifinished products before, during and after modification. The object of the invention lies in disclosing a device in which the combination of melt production and modification takes place in a continuous method and leads to improved properties of the polymers. The object is attained through a device comprising a device component for converting the polymers into the flowable state, a radiation guard for an electron irradiation and cooling devices, wherein an irradiation device for electron radiation as well as supply and discharge lines are present inside the radiation guard, wherein in the case of the production of solid formed and modified polymers inside the radiation guard, a forming device is present inside the radiation guard and the flowable polymers after the forming device are present floating freely in space in the region of the irradiation.
摘要:
An apparatus for the continuous modification of polymers in the flowable state by electron radiation, includes a device configured for converting polymers into the flowable state, a forming device and at least one irradiation device structured and arranged to provide electron radiation in a region of irradiation. Additionally, the apparatus includes at least one cooling device, a radiation guard and supply and discharge lines inside the radiation guard. The supply and discharge lines realize a continuous transport of the polymers in the flowable state at least through the radiation guard into the region of irradiation. Additionally, the supply and discharge lines realize a continuous transport of one of polymers remaining in the flowable state and modified at least inside the radiation guard and solid formed and modified polymers out of the region of the irradiation.
摘要:
A sulfur-curable rubber compound for a tire tread rubber of, in particular, a racing tire, which compound comprises at least one diene rubber, at least one filler and at least one plasticizer. The rubber compound comprises 5 to 90 phr of at least one layered silicate modified with alkylammonium ions and free of guest molecules that have been polymerized or swelled in by a prior treatment.
摘要:
Unvulcanized rubber mixture includes at least one rubber, aggregate, and at least one filler, wherein a surface of the at least one filler has been modified with a stimuli-sensitive substance. A filler for unvulcanized rubber mixtures includes a surface which has been modified with a stimuli-sensitive substance. A process for making an unvulcanized rubber mixture including at least one rubber, aggregate, and at least one filler, wherein a surface of the at least one filler has been modified with a stimuli-sensitive substance. The process includes coating a surface of at least one filler with a stimuli-sensitive substance to form at least one coated filler, and mixing the at least one coated filler with unvulcanized rubber and aggregate. A rubber product formed from an unvulcanized rubber mixture includes at least one rubber, aggregate, and at least one filler, wherein a surface of the at least one filler has been modified with a stimuli-sensitive substance. Vulcanized rubber including a rubber matrix comprising aggregate and at least one rubber, and at least one filler, wherein a surface of the at least one filler has been modified so as to form a stimuli-sensitive rubber mixture with the rubber matrix surrounding the at least one filler. A process for making vulcanized rubber including a rubber matrix which includes aggregate and at least one rubber, and at least one filler, wherein a surface of the at least one filler has been modified so as to form a stimuli-sensitive rubber mixture with the rubber matrix surrounding the at least one filler. The process includes coating a surface of at least one filler with unvulcanized rubber to form at least one coated filler, mixing the at least one coated filler with unvulcanized rubber and aggregate to form an unvulcanized rubber mixture, and vulcanizing the unvulcanized rubber mixture.
摘要:
A multi-phase generator has a separately excited shunt field which is controlled by a voltage regulator. A free-wheeling diode is connected in parallel with the field. The voltage regulator is included in a single, hermetically sealed housing which has a metal base plate forming one terminal of the voltage regulator; two insulated terminals project from the voltage regulator and are sealed, in insulated relation, through the housing, preferably the base plate. Three monolithic semi-conductor integrated circuit (IC) chips are located within the sealed housing, two of them soldered to the base plate so that one of the semi-conductor connections of the chip are directly connected to the base plate, the connection being for the collector of the power transistor and the anode of the free-wheeling diode, the control portion of the voltage regulator being secured to a ceramic plate which is attached to the base plate, other terminals from the voltage regulator are being effected internally, by bonding wires, and to the two externally excessible contacts, so that the entire assembly is simple, readily manufactured, and requires little assembly, labor and time for connection to an alternator structure.