DE2619605A1 - Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages - Google Patents

Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages

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Publication number
DE2619605A1
DE2619605A1 DE19762619605 DE2619605A DE2619605A1 DE 2619605 A1 DE2619605 A1 DE 2619605A1 DE 19762619605 DE19762619605 DE 19762619605 DE 2619605 A DE2619605 A DE 2619605A DE 2619605 A1 DE2619605 A1 DE 2619605A1
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DE
Germany
Prior art keywords
solid
rubber
additives
liq
minutes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19762619605
Other languages
German (de)
Inventor
Josef Dr Lehnen
Horst Papenmeier
Gerd Zingelmann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAPENMEIER KG GUENTER
Bayer AG
Original Assignee
PAPENMEIER KG GUENTER
Bayer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PAPENMEIER KG GUENTER, Bayer AG filed Critical PAPENMEIER KG GUENTER
Priority to DE19762619605 priority Critical patent/DE2619605A1/en
Priority to AU15385/76A priority patent/AU508463B2/en
Priority to CA256,126A priority patent/CA1079921A/en
Priority to JP7712776A priority patent/JPS529049A/en
Priority to NL7607343A priority patent/NL7607343A/en
Priority to GB2764376A priority patent/GB1551382A/en
Priority to GB2066177A priority patent/GB1551383A/en
Priority to FR7620343A priority patent/FR2316064A1/en
Priority to BR7604365A priority patent/BR7604365A/en
Priority to AR264604A priority patent/AR210516A1/en
Priority to ES451724A priority patent/ES451724A1/en
Publication of DE2619605A1 publication Critical patent/DE2619605A1/en
Withdrawn legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/002Methods
    • B29B7/005Methods for mixing in batches
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/808Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with stirrers driven from the bottom of the receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/86Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis co-operating with deflectors or baffles fixed to the receptacle
    • B01F27/862Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis co-operating with deflectors or baffles fixed to the receptacle the baffles being adjustable or movable
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F33/00Other mixers; Mixing plants; Combinations of mixers
    • B01F33/80Mixing plants; Combinations of mixers
    • B01F33/83Mixing plants specially adapted for mixing in combination with disintegrating operations
    • B01F33/8305Devices with one shaft, provided with mixing and milling tools, e.g. using balls or rollers as working tools; Devices with two or more tools rotating about the same axis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29BPREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00Mixing; Kneading
    • B29B7/02Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/06Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices
    • B29B7/10Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary
    • B29B7/12Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft
    • B29B7/16Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type with movable mixing or kneading devices rotary with single shaft with paddles or arms
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00Processes of treating or compounding macromolecular substances
    • C08J3/20Compounding polymers with additives, e.g. colouring
    • C08J3/205Compounding polymers with additives, e.g. colouring in the presence of a continuous liquid phase
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29KINDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2021/00Use of unspecified rubbers as moulding material
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2321/00Characterised by the use of unspecified rubbers

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

Process comprises (i) mixing the particular rubber at 20-120 degrees C in turbulent conditions with the solid additives for 0.5-2 min. durng which time powdering takes place; (ii) introducing the liq. additives in 0.1-3 min. into the turbulent mixt. of rubber and solid additives and (iii) mixing the components under turbulent conditions for a further max. period of 2 min. The mixt. may be heated or cooled from the outside. Enables fluid i.e. flowable, homogeneous mixts. of rubbers and analogous elastomers with solid and liq. additives, to be made on a large scale in powder or granular form, suitable for further processing, using relatively simple equipment.

Description

Verfahren und Vorrichtun zur Herstellung eines rieselfähigenMethod and device for producing a free-flowing

Gemenges aus Kautschuken und festen und flüssigen Zuschlagstoffen Die Erfindung betrifft die Herstellung eines zur WeiterveXarbeitung geeigneten rieselfähigen, homogenen Gemenges aus einem Kautschuk in Pulver- oder Körnerform, gegebenenfalls einem Thermoplasten in Pulver- oder Körnerform und festen und flüssigen Zuschlagstoffen. Die Erfindung betrifft ebenfalls eine Vorrichtung zur Burchführung des Verfahrens.Mixture of rubbers and solid and liquid aggregates The invention relates to the production of a pourable, suitable for further processing, homogeneous mixture of a rubber in powder or granular form, optionally a thermoplastic in powder or granular form and solid and liquid aggregates. The invention also relates to a device for carrying out the method.

Verfahren zur Herstellung von Pulvergemischen sind zwar bekannt; es ist aber bisher nicht gelungen, rieselfähige lagerstabile Kautschukmischungen technisch einfach in großem Maßstab herzustellen.Processes for the production of powder mixtures are known; it but has not yet been successful in producing free-flowing, storage-stable rubber mixtures technically easy to manufacture on a large scale.

Gegenstand der Erfindung ist ein Verfahren zur Herstellung eines rieselfähigen Gemischs aus Kautschuken und festen und flüssigen Zuschlagstoffen, das dadurch gekennzeichnet ist, daß man zuerst teilchenförmigen Kautschuk bei Temperaturen von 20 bis 12000 mit den festen Zuschlagstoffen 0.5 bis 2 Minuten lang unter Zerkleinerung verwirbelt (wobei sich die Zuschlagstoffe an der Oberfläche der Kautschukteilchen anlagern), danach die fliissigen Zuschlagstoffe in einem Zeitraum von 0.1 bis 3 Minuten in das wirbelnde Gemisch aus Kautschuk und festen Zuschlagstoffen einbringt (wobei die Zerkleinerung weitgehend unterbunden wird) und anschließend noch bis zu 2 Minuten weiter verwirbelt.The invention relates to a method for producing a free-flowing one Mixture of rubbers and solid and liquid aggregates, which is characterized is to first use particulate rubber at temperatures from 20 to 12,000 swirled with the solid aggregates for 0.5 to 2 minutes while crushing (whereby the aggregates attach to the surface of the rubber particles), then add the liquid aggregates in a period of 0.1 to 3 minutes brings in the whirling mixture of rubber and solid aggregates (where comminution is largely prevented) and then for up to 2 minutes further swirled.

Teilchenförmige Kautschuke im Sinne der Erfindung sind Elastomere, die mit Teilchendurchmessern von 1 Mikron bis 10 O mm, bevorzugt 0.1 bis 6 mm und insbesondere 0.5 bis 2.5 mm vorliegen.Particulate rubbers for the purposes of the invention are elastomers, those with particle diameters of 1 micron to 10 0 mm, preferably 0.1 to 6 mm and in particular 0.5 to 2.5 mm are present.

Besonders geeignet ist Naturkautschuk und Synthesekautschuke wie Polybutadien, Polyisopren, Butadien/Styrol-Copolymerisate, Butadien/Alkylacrylat-Copolymere, Butadien/Acrylnitril-Copolymerisate (Nitrilkautschuk), Polychloropren und Äthylen-Propylen-Dienkautschuke (EPDM-Kautschuke; das Dien ist im allgemeinen nicht konjugiert).Natural rubber and synthetic rubbers such as polybutadiene are particularly suitable, Polyisoprene, butadiene / styrene copolymers, butadiene / alkyl acrylate copolymers, butadiene / acrylonitrile copolymers (Nitrile rubber), polychloroprene and ethylene-propylene-diene rubbers (EPDM rubbers; the diene is generally not conjugated).

Ebenfalls geeignet (und in dem Begriff Kautschuk eingeschlossen) sind Mischungen von Elastomeren und Thermoplasten mit überwiegend Kaltschukoharakter (insbesondere vulkanisierbare Mischungen dieser Art), z.B. Mischungen von Polyvinylchlorid und Butadien/Acrylnitril-Copolymerisaten.Also suitable (and included in the term rubber) are Mixtures of elastomers and thermoplastics with predominantly cold protection characteristics (especially vulcanizable blends of this type), e.g. blends of polyvinyl chloride and butadiene / acrylonitrile copolymers.

Feste Zuschlagstoffe sind alle Feststoffe, die üblicherweise Kautschuken zur Verarbeitung zugefügt werden. (Die im folgenden angegebenen Mengen sind Gewichtsteile pro 100 Gewichtsteile Kautschuk). Beispiele sind Ruße (2 - 200), helle Füllstoffe wie Kreide, Silikate (5 - 2000), Vulkanisiermittel und Vulkanisierhilfsmittel (Schwefel, Zinkoxid, Beschleuniger), Alterungsschutzmittel, Ozonschutzmittel, Harze, Verarbeitungshilfsmittel.Solid aggregates are all solids that are commonly found in rubbers can be added for processing. (The amounts given below are parts by weight per 100 parts by weight of rubber). Examples are carbon blacks (2 - 200), light colored fillers such as chalk, silicates (5 - 2000), vulcanizing agents and vulcanizing auxiliaries (sulfur, Zinc oxide, accelerators), anti-aging agents, anti-ozone agents, resins, processing aids.

Flüssige Zuschlagstoffe sind insbesondere Weichmacheröle und Strecköle (5 - 170) und Harze (5 - 20), z.B. Phenolharze, die meist im Öl gelöst eingesetzt werden.Liquid additives are, in particular, plasticizer oils and extender oils (5 - 170) and resins (5 - 20), e.g. phenolic resins, which are mostly used dissolved in oil will.

Die erste Stufe des Verfahrens kann bei 20 - 120 0C durchgeführt werden. Man bevorzugt aber Temperaturen von etwa 30 bis 400C.The first stage of the process can be carried out at 20-120 ° C. However, temperatures of about 30 to 40 ° C. are preferred.

Dies gilt auch für die zweite Stufe. In der letzten Stufe wendet man vorzugsweise Temperaturen von 30 - 50 0C an. Verwirbeln bedeutet, daß die (festen) Stoffe trocken gemischt werden, wobei sie mechanisch in Bewegung gehalten werden, so daß sie aufwirbeln.This also applies to the second stage. In the last step you turn preferably temperatures of 30-50 ° C. Swirling means that the (solid) Substances are mixed dry, keeping them in motion mechanically, so that they stir up.

Die erhaltenen Mischungen sind rieselfähige und lagerfårige Pulver mit Teilchengrößen von 1 Mikron bis 10 mm, bevorzugt 0.1 bis 6 mm, insbesondere aber 0.5 bis 2.5 mm. Sie enthalten in der Regel alle für die Kautschukverarbeitung erforderlichen Bestandteile, sind also sofort weiter verarbeitbar.The mixtures obtained are free-flowing and storable powders with particle sizes from 1 micron to 10 mm, preferably 0.1 to 6 mm, in particular but 0.5 to 2.5 mm. They usually contain everything for rubber processing required components, so they can be processed immediately.

Die flüssigen Zuschlagstoffe können innerhalb von 0.1 bis 3 Minuten fortlaufend oder mit einer oder mehreren Unterbrechungen zugegeben werden. Die fortlaufende Zugabe empfiehlt sich bei kleinen Mengen; die unterbrochene Zugabe bei großen Mengen.The liquid aggregates can be added within 0.1 to 3 minutes added continuously or with one or more interruptions. The ongoing We recommend adding small amounts; the interrupted addition in the case of large quantities.

Wichtig ist, daß die flüssigen Zuschlagstoffe in die umlaufende Naterialtrombe injiziert werden.It is important that the liquid aggregates are in the circulating material stream injected.

Die erfindungsgemäße Vorrichtung zur Durchführung des Verfahrens ist dadurch gekennzeIchnet, daß in einem verschließbaren, zylindrischen Behälter mit üserwiegend gexölbtem Boden mittig ein drehbar gelagerter Bofenräumer vorgesehen ist, an dessen nach oben verlängerter Antriebswelle mindestens ein Schlagmesser und ein mit Abstand darüberliegendes Kreiselsogmesser angeordnet sind und daß am Behälterdeckel ein verstellbar angebrachtes, in den zylindrischen Behälter tauchendes Leitblech angebracht ist.The device according to the invention for performing the method is characterized in that in a lockable, cylindrical container with A rotatably mounted oven clearer is provided in the center of the predominantly arched floor is, on whose drive shaft extended upwards at least one fly cutter and an overlying gyroscope with a distance are arranged and that on Container lid an adjustable, immersed into the cylindrical container Baffle is attached.

Anbackungen an der Behälterinnenwand und am Mischwerkzeug werden vermieden, wenn während des Mischens und Zerkleiners das Füllgut auf der angegebenen Temperatur gehalten wird. Man kann dies durch Beeinflussung der Drehzahl des Mischwerkzeuges erreichen.Caking on the inside wall of the container and on the mixing tool is avoided, if the product is at the specified temperature during mixing and grinding is held. You can do this by influencing the speed of the mixing tool reach.

Von Bedeutung für das Anbacken an der Behälterinnenwand ist auch die Temperatur der äußeren Grenzschicht des Füllgutes, so daß Heizung oder Kühlung der Außenwände des Gefäßes günstig sein kann.This is also important for sticking to the inner wall of the container Temperature of the outer boundary layer of the product, so that heating or cooling of the Outer walls of the vessel can be beneficial.

Es zeigen: Figur 1: Teilchenförmiger Kautschuk (Ausgangsmaterial), vergrößert Figur 2: Kautschuk + fester Zuschlagstoff (vergrößert) Figur 3: Kautschuk + fester Zuschlagstoff + flüssiteir'! stoff (vergrößert) Figur 4: Ausführungsfom der Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens Figur 5 und 5: Ausführungsform der Vorrichtung mit angedeutetem Materialfluß.They show: FIG. 1: Particulate rubber (starting material), enlarged Figure 2: Rubber + solid aggregate (enlarged) figure 3: rubber + solid aggregate + liquid! fabric (enlarged) Figure 4: embodiment the device for carrying out the method according to the invention, Figures 5 and 5: Embodiment of the device with indicated material flow.

Figur 1 zeigt, daß die Kautschukteilchen 1 noch relativ groß sind und an ihrer Oberfläche noch kein Zuschlagstoff angelagert ist.FIG. 1 shows that the rubber particles 1 are still relatively large and no aggregate has yet been deposited on its surface.

Figur 2 zeigt, daß die Kautschukteilchen 1 durch die während des Mischens aiiftretenden inneren und äußeren Kräfte zerkleinert worden sind und an ihrer Oberfläche feste Zuschlagstoffe angelagert sind.Figure 2 shows that the rubber particles 1 by the during mixing Any internal and external forces that arise have been crushed and on their surface solid aggregates are deposited.

Figur 3 zeigt, daß die Kautschukteilchen 1 weitgehend ihre Größe behalten haben, jedoch in ihrer Form abgerundeter sind und die Anlagerungen größer geworden sind.FIG. 3 shows that the rubber particles 1 largely retain their size but are more rounded in shape and the deposits have become larger are.

Die Vorrichtung zur Durchführung des erfindungsgemäßen Verfahrens, wie sie in der Figur 4 dargestellt ist, besteht aus einem zylindrischen Behälter 2 mit Deckel 3. Der Boden 3 des Behälters 2 hat eine gewölbte Form. Im Behälter 2 ist mittig ein Bodenräwner 4 vorgesehen, der an einer drehbar gelagerten Antriebswelle 5 befestigt ist. An der über dem Bodenräumer 4 nach oben fortgeführten Antriebswelle 5 ist mindestens ein Schlagmesser 5 angeordnet, welches die Zerkleinerung der Kautschukteilchen und der festen Zuschlagstoffe bewirkt. Oberhalb des Schlagmessers 6 ist auf der gleichen Welle 5 ein Kreiselsogmesser 7 befestigt. Das Kreiselsogmesser 7 ist ein nach innen geneigter Ring, der mit der Antriebsachse durch Stege verbunden ist. Das Kreiselsogmesser 7 leitet das in dem Behälter wirbelnde Füllgut nach innen und saugt gleichzeitig Luft an, so daß es für die Vertikalbewegung des Füllguts sorgt. Schlagmesser 7 und Bodenräumer erzwingen gleichzeitig eine Horizontalbewegung.The device for carrying out the method according to the invention, as shown in Figure 4, consists of a cylindrical container 2 with lid 3. The bottom 3 of the container 2 has a curved shape. In the container 2, a bottom scraper 4 is provided in the center, which is attached to a rotatably mounted drive shaft 5 is attached. On the drive shaft continued up above the bottom scraper 4 5 at least one fly knife 5 is arranged, which comminutes the rubber particles and the solid aggregates causes. Above the fly knife 6 is on the the same shaft 5 a rotary suction knife 7 attached. The gyroscope 7 is a inwardly inclined ring, which is connected to the drive shaft by webs. The rotary suction knife 7 guides the filling material whirling in the container inwards and inwards at the same time sucks in air so that it ensures the vertical movement of the product. The fly knife 7 and the floor scraper force a horizontal movement at the same time.

Insgesamt bewegen sich die Teilchen des Füllguts somit auf Schraubeabahnen durch den Behälter. Die Wegforn der Teilchen wird ferner durch das am Behälterdeckel 3 befestigte Leitblech S beeinflußt, dessen Anstellwinkel und Eintauchtiefe verstellbar ist. Als Antrieb dient ein Elektromotor 9, dessen Drehzahl regelbar ist. Kraftübertragendes Element sind Keilriemen 10.Overall, the particles of the filling material move up Screw stripping through the container. The Wegforn of the particles is also determined by that on the container lid 3 fixed baffle S affects the angle of attack and immersion depth adjustable is. An electric motor 9, the speed of which can be regulated, is used as the drive. Power transmission Element are V-belts 10.

Am Behalter 2 ist im Bodenbereich ein Auslaufstutzen 11 angebracht, über welchen mit pneumatischer Unterstützung 12 das Fertiggemenge aus dem Behälter 2 abgenommen wird.An outlet nozzle 11 is attached to the bottom of the container 2, via which with pneumatic assistance 12 the finished batch from the container 2 is removed.

Beispiel: Allgemeine Vorschrift: Benutzt wird eine Vorrichtung gemäß Figur 4 mit einem Volumen von 100 1. In die Vorrichtung werden 10 kg des teilchenförmigen Kautschuks gegeben und die festen Zuschlagstoffe. Nach Schliessen des Deckels wird die Bodenräumer/Messer-Kombination in Rotation verstzt und möglichst rasch auf 1500 UlMin. gebracht.Example: General regulation: A device is used in accordance with FIG. 4 with a volume of 100 1. 10 kg of the particulate Given the rubber and the solid aggregates. After closing the lid the bottom clearer / knife combination rotated and set as quickly as possible to 1500 UlMin. brought.

Nach zwei Minuten werden innerhalb von 0.1 bis 1 Minute (je nach Menge) die flüssigen Zuschlagstoffe zugegeben und nach weiteren zwei Minuten das fertige Gemisch abgezogen.After two minutes, within 0.1 to 1 minute (depending on the amount) the liquid additives are added and after a further two minutes the finished product Mixture withdrawn.

Versuch 1: Mischung zur Herstellung von Kautschakprofilen: Kautschuk: Butadien/Acrylnitril-Copolymerisat Teilchendurchmesser 5mm 10 kg Feste Zuschlagstoffe: Ruß (Sterling 142) 6 kg Alterungsschutzmittel 0.2 kg ZnO 0.5 kg Beschleuniger 0.15 kg Schwefel 0.24 kg Ca0 1 kg Flüssige Zuschlagstoffe: Öl (Plastikator 88) 3 kg Harz (Koresin) 0.3 kg Erhalten wird eine Kautschukmischung mit einer mittleren Teilchengröße von ca. 2.0 mm. Die Mischung ist rieselfähig (Schüttgewicht 0.5 g/cm3) und lagerstabil. Mischtemperatur 37°r; Manteltemperatur des Mischers 50°C.Experiment 1: Mixture for the production of rubber profiles: Rubber: Butadiene / acrylonitrile copolymer particle diameter 5mm 10 kg Solid aggregates: Carbon black (Sterling 142) 6 kg anti-aging agent 0.2 kg ZnO 0.5 kg accelerator 0.15 kg sulfur 0.24 kg Ca0 1 kg liquid additives: oil (Plastikator 88) 3 kg resin (Koresin) 0.3 kg A rubber mixture with an average particle size is obtained of approx. 2.0 mm. The mixture is free-flowing (bulk density 0.5 g / cm3) and has a long shelf life. Mixing temperature 37 ° r; Mixer jacket temperature 50 ° C.

Versuch 2: Mischung für alterungsbeständige Profile Kautschuk: Polychloropren Teilchengröße 8 mm 10 kg Feste Zuschlagstoffe: Ruß (Sterling 50-1) 4- kg MgO 0.4 kg Ozonschutzmittel 0.4 kg ZnO 0.5 kg Beschleuniger 0.6 kg Stearinsäure 0.1 kg Flüssige Zuschlagstoffe: Öle (Rubol, Weichmacher) 2.5 kg Die Mischung hat eine mittlere Teilchengröße von 2.5 mm; sie ist rieselfähig (Schüttgewicht 0.51 g/cm³) und lagerstabil.Experiment 2: Mixture for aging-resistant profiles, rubber: polychloroprene Particle size 8 mm 10 kg Solid aggregates: Carbon black (Sterling 50-1) 4- kg MgO 0.4 kg ozone protection agent 0.4 kg ZnO 0.5 kg accelerator 0.6 kg stearic acid 0.1 kg liquids Additives: oils (rubol, plasticizers) 2.5 kg The mixture has an average particle size of 2.5 mm; it is free-flowing (bulk density 0.51 g / cm³) and has a long shelf life.

Mischungstemperatur 450 C; Manteltemperatur 500 c.Mixture temperature 450 C; Jacket temperature 500 c.

Versuch 3: Mischung für weiche G'nnmidruckwalzen Kautschuk: Mischung aus PVC (70 Gew.-Teile) und Butadien/ Acrylnitril Copolymerisat (30 Gew.-Teile) Teilchengröße 5 mm 10 kg Feste Zuschlagstoffe: ZnO 0.5 kg Stearinsäure 0.1 kg TiO2 0.5 kg Kieselsäurefüllstoff 1.5 kg Schwe felfarbe 0.24 kg Beschleuniger 0.18 kg Flüssige Zuschlagstoffe: Öle 20.5 kg Die Mischung hat eine mittlere Teilchengröße von 2.8 mm, sie ist rieselfähig (Schüttgewicht 0.55 g/cm3), lagerstabil; Mischungstemperatur 430; Manteltemperatur 600C.Experiment 3: Mixture for soft rubber pressure rollers: Mixture made of PVC (70 parts by weight) and butadiene / acrylonitrile copolymer (30 parts by weight) Particle size 5 mm 10 kg Solid additives: ZnO 0.5 kg stearic acid 0.1 kg TiO2 0.5 kg silica filler 1.5 kg sulfur paint 0.24 kg accelerator 0.18 kg Liquid additives: Oils 20.5 kg The mixture has an average particle size of 2.8 mm, it is free-flowing (bulk density 0.55 g / cm3), stable in storage; Mixing temperature 430; Jacket temperature 600C.

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Claims (4)

Patentansprüche: erfahren zur Herstellung eines rieselfähigen Gemischs aus Kautschuken und festen und flüssigen Zuschlagstoffen, dadurch gekennzeichnet, da.'3 man zuerst teilchenförmigen Kautschuk )ei Temperaturen von 20 bis 120°C mit den festen Zuschlagstoffen 0.5 bis 2 Minuten lang unter Zerkleinerung verwirbelt, danach die flüssigen Zuschlagstoffe in einem Zeitraum von 0.1 bis 3 Minuten in das wirbelnde Gemisch aus Kautschuk und festen 7.U-schlagstoffen einbringt und anschließend noch bis zu 2 hlinuten weiter verwirbelt. Claims: experienced in the production of a free-flowing mixture made of rubbers and solid and liquid aggregates, characterized da.'3 you first use particulate rubber) at temperatures of 20 to 120 ° C swirled the solid aggregate for 0.5 to 2 minutes while crushing, then add the liquid aggregates to the in a period of 0.1 to 3 minutes whirling mixture of rubber and solid 7.U-impact materials brings in and then swirled for up to 2 minutes. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß a während des Mischens von außen khlt oder erwärmt. 2. The method according to claim 1, characterized in that a during mixing cools or heats from the outside. 3. Vorri^htung zur Durchführung des Verfahrens nach den Ansprüchen 1 und 2, dadurch gekennzeichnet, daß in einem verschließbaren, zylindrischen Behälter (2) mit gewölbtem Boden (3) mittig ein drehbar gelagerter Bodenräumer (4) vorgesehen ist, an dessen noch oben verlängerter Antriebswelle (5) mindestens ein Schlagmesser (6) und ein mit Abstand darüberliegendes Kreiselsogmesser (7) angeordnet sind und ein am Behälterdeckel (3) verstellbar angebrachtes Leitblech (8) in den Behälter eintaucht. 3. Provision for carrying out the method according to the claims 1 and 2, characterized in that in a lockable, cylindrical container (2) with a curved bottom (3) a rotatably mounted bottom scraper (4) is provided in the center is, on whose drive shaft (5), which is still extended at the top, at least one fly knife (6) and a centrifugal suction knife (7) above it at a distance are arranged and a guide plate (8) adjustably attached to the container lid (3) into the container immersed. 4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß das Leitblech, Anstellwinkel und Eintauchtiefe verstellbar sind. 4. Apparatus according to claim 3, characterized in that the guide plate, The angle of attack and the immersion depth are adjustable.
DE19762619605 1975-07-03 1976-05-04 Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages Withdrawn DE2619605A1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
DE19762619605 DE2619605A1 (en) 1976-05-04 1976-05-04 Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages
AU15385/76A AU508463B2 (en) 1975-07-03 1976-06-29 Pulverulent rubber mixture
CA256,126A CA1079921A (en) 1975-07-03 1976-06-30 System for mixing pulverulent rubber with liquids and solids
JP7712776A JPS529049A (en) 1975-07-03 1976-07-01 Method of and apparatus for manufacturing fluid mixtures of granulated rubber and solid and liquid additives
NL7607343A NL7607343A (en) 1975-07-03 1976-07-02 POWDER-FORMED RUBBER MIXTURES.
GB2764376A GB1551382A (en) 1975-07-03 1976-07-02 Pulverulent rubber mixtures
GB2066177A GB1551383A (en) 1975-07-03 1976-07-02 Apparatus for the production of a flowable homogeneous mixture
FR7620343A FR2316064A1 (en) 1975-07-03 1976-07-02 PROCESS FOR OBTAINING A RUBBER MIXTURE CAPABLE OF FLOWING, AND CORRESPONDING APPARATUS
BR7604365A BR7604365A (en) 1975-07-03 1976-07-02 PROCESS FOR THE PRODUCTION OF A FLUID MIXTURE OF RUBBER AND APPLIANCE FOR THE PRODUCTION OF THE SAME
AR264604A AR210516A1 (en) 1976-05-04 1976-09-07 PROCEDURE AND DEVICE FOR THE PRODUCTION OF A SLIDING MIXTURE FROM RUBBER TO SOLID AND LIQUID ATTACHMENTS
ES451724A ES451724A1 (en) 1976-05-04 1976-09-21 Procedure and device for the production of a fluid mixture of solid and liquid rubbers and additives. (Machine-translation by Google Translate, not legally binding)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19762619605 DE2619605A1 (en) 1976-05-04 1976-05-04 Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages

Publications (1)

Publication Number Publication Date
DE2619605A1 true DE2619605A1 (en) 1977-11-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19762619605 Withdrawn DE2619605A1 (en) 1975-07-03 1976-05-04 Flowable mixts. prodn. - from particulate rubber, solid and liq. additives, by short term intensive mixing at elevated temp. in two stages

Country Status (3)

Country Link
AR (1) AR210516A1 (en)
DE (1) DE2619605A1 (en)
ES (1) ES451724A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716041A1 (en) * 1986-05-17 1988-01-21 Freudenberg Carl Fa Process for producing a vulcanisable material body for the production of rubber mouldings
DE4134683A1 (en) * 1991-10-21 1993-04-22 Gezolan Ag METHOD FOR PRODUCING HEAT CROSSLINKABLE AND / OR THERMOPLASTIC ELASTOMER MIXTURES AND APPLICATION OF THE METHOD

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3716041A1 (en) * 1986-05-17 1988-01-21 Freudenberg Carl Fa Process for producing a vulcanisable material body for the production of rubber mouldings
DE4134683A1 (en) * 1991-10-21 1993-04-22 Gezolan Ag METHOD FOR PRODUCING HEAT CROSSLINKABLE AND / OR THERMOPLASTIC ELASTOMER MIXTURES AND APPLICATION OF THE METHOD

Also Published As

Publication number Publication date
AR210516A1 (en) 1977-08-15
ES451724A1 (en) 1977-08-16

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