DE4011794A1 - Matrix prodn. from scrap rubber - Google Patents

Matrix prodn. from scrap rubber

Info

Publication number
DE4011794A1
DE4011794A1 DE19904011794 DE4011794A DE4011794A1 DE 4011794 A1 DE4011794 A1 DE 4011794A1 DE 19904011794 DE19904011794 DE 19904011794 DE 4011794 A DE4011794 A DE 4011794A DE 4011794 A1 DE4011794 A1 DE 4011794A1
Authority
DE
Germany
Prior art keywords
rubber
resin
natural rubber
prodn
mpa
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Withdrawn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
DE19904011794
Other languages
German (de)
Inventor
Sunil Dr Dixit
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.)
Phoenix AG
Original Assignee
Phoenix 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 Phoenix AG filed Critical Phoenix AG
Priority to DE19904011794 priority Critical patent/DE4011794A1/en
Publication of DE4011794A1 publication Critical patent/DE4011794A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
    • B29B17/0026—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting
    • B29B17/0042—Recovery of plastics or other constituents of waste material containing plastics by agglomeration or compacting for shaping parts, e.g. multilayered parts with at least one layer containing regenerated plastic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L19/00—Compositions of rubbers not provided for in groups C08L7/00 - C08L17/00
    • C08L19/003—Precrosslinked rubber; Scrap rubber; Used vulcanised rubber
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING 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
    • B29K2021/00—Use of unspecified rubbers as moulding material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Abstract

In the prodn. of matrix material (I) for the prodn. of panels, mats and mouldings from mixts. of ground scrap rubber (II), with or without reinforcements, masticating agent (III), natural rubber (NR), accelerator system, ZnO and S, (II) mixt. is treated with 2-6, (2.5-4) wt.% of either: a) aliphatic-aromatic plasticising resin (IV) as viscous liq. (IVA) with sp. gr. = 0.8-1.2 g/cc and viscosity = 60-100 mPa.s at 80 deg.C; or b) (IV) in solid form (IVB) in a master batch with SiO2; and rolls are used for mixing. Pref. (IVA) has sp. gr. = 1.0 g/cc and viscosity = 80 mPa.s at 80 deg.C. It is made into a master batch with natural rubber, pref. in a resin/rubber ratio of ca 1:2. The amt. of SiO2 is 25-40, (30-35) wt.%.

Description

Die Erfindung betrifft ein Verfahren zur Wiedergewinnung von Gummiabfällen (Elastomerabfällen) gemäß Oberbegriff des Anspruchs 1.The invention relates to a method for the recovery of Rubber waste (elastomer waste) according to the preamble of Claim 1.

In der DE-A-37 19 291 wird das Verfahren zur Wiedergewinnung von vulkanisierten Abfällen, nämlich von Gummiabfällen, detailliert beschrieben. Dabei ist bekannt, daß zerkleinerte bzw. gemahlene Gummiabfälle mit einem Zusatz von Naturkautschuk als Binder versehen werden. Die Voraussetzung dafür ist, daß sich die Rohlinge auf dem Kalander oder im Extrusionsverfahren fertigen lassen.DE-A-37 19 291 describes the process for recovery vulcanized waste, namely rubber waste, described in detail. It is known that shredded or ground rubber waste with the addition of natural rubber be provided as a binder. The prerequisite for this is that the blanks on the calender or in the extrusion process have it made.

Die Mischungen auf der Basis von Gummimehl und Naturkautschuk sind jedoch mangelhaft in ihrer Homogenität und Fließeigen­ schaften. Das Problem liegt hier in der Dispergierung des Binders im Gummimehl.The mixtures based on rubber powder and natural rubber however, are poor in their homogeneity and flow characteristics create. The problem here is in the dispersion of the Binder in gum powder.

Die Aufgabe der Erfindung ist es daher, die Homogenität solcher Mischungen so zu verbessern, daß sie sich leicht zu Rohlingen verarbeiten lassen und gute Fließeigenschaften während der Vulkanisation aufweisen. Gelöst wird diese Aufgabe durch das Kennzeichen des Anspruchs 1 oder 2.The object of the invention is therefore the homogeneity to improve such mixtures so that they are easily too Have blanks processed and good flow properties exhibit during vulcanization. This is solved Task by the characterizing part of claim 1 or 2.

Durch die Verwendung des erfindungsgemäßen Harzes nach den Verfahrensvarianten I oder II, wobei das Einmischen sämtlicher Mischungsbestandteile auf der Walze erfolgt, wird die Dispersion des Binders so weit verbessert, daß die Fließ­ eigenschaften der Mischung bis zu 50% erhöht werden können, ohne daß hiermit eine Verschlechterung der Vulkanisat- Eigenschaften verbunden ist. By using the resin according to the invention Process variants I or II, the mixing of all Mixing components done on the roller, the Dispersion of the binder improved so much that the flow properties of the mixture can be increased up to 50%, without this worsening the vulcanizate Properties.  

Dadurch wird eine leichte Fertigung der Rohlinge und des Vulkanisates ermöglicht. Ein zusätzlicher Vorteil ist das verbesserte Aussehen der Artikel.This makes it easy to manufacture the blanks and Vulcanizates enables. This is an additional advantage improved appearance of the articles.

Das folgende Beispiel bezieht sich auf die Wiedergewinnung von Gummiabfällen nach der Verfahrensvariante I, wobei aus Schlauchkrümmerabfällen Stallmatten hergestellt werden.The following example relates to recovery of rubber waste according to process variant I, whereby from Hose elbow waste stable mats are produced.

Claims (6)

1. Verfahren zur Herstellung von Grundmaterial zum Herstellen von Platten, Matten und Formartikeln aus Mischungen von gemahlenen Gummiabfällen mit oder ohne Verstärkungsein­ lagen, Mastiziermittel, Naturkautschuk, Beschleuniger­ system, Zinkoxid und Schwefel, dadurch gekennzeichnet, daß der Gummiabfallmischung 2 bis 6 Gew.-%, insbesondere 2,5 bis 4 Gew.-%, eines aliphatisch aromatischen Weich­ harzes als zähflüssige Substanz mit einem spezifischen Gewicht von 0,8 bis 1,2 g/cm3 und einer Viskosität von 60 bis 100 mPa×s bei 80°C zugefügt werden, wobei das Einmischen auf der Walze erfolgt (Verfahrensvariante I).1. A process for the production of base material for the production of sheets, mats and molded articles from mixtures of ground rubber waste with or without reinforcement, masticating agents, natural rubber, accelerator system, zinc oxide and sulfur, characterized in that the rubber waste mixture 2 to 6 wt .-% , in particular 2.5 to 4 wt .-%, of an aliphatic aromatic soft resin as a viscous substance with a specific weight of 0.8 to 1.2 g / cm 3 and a viscosity of 60 to 100 mPa · s at 80 ° C. are added, the mixing taking place on the roller (process variant I). 2. Verfahren zur Herstellung von Grundmaterial zum Herstellen von Platten, Matten und Formartikeln aus Mischungen von gemahlenen Gummiabfällen mit oder ohne Verstärkungsein­ lagen, Mastiziermittel, Naturkautschuk, Beschleuniger­ system, Zinkoxid und Schwefel, dadurch gekennzeichnet, daß der Gummiabfallmischung 2 bis 6 Gew.-%, insbesondere 2,5 bis 4 Gew.-%, eines aliphatisch aromatischen Weichharzes in fester Form, verbatcht mit Kieselsäure, zugefügt werden, wobei das Einmischen auf der Walze erfolgt (Verfahrens­ variante II).2. Process for manufacturing base material for manufacturing of sheets, mats and molded articles from mixtures of ground rubber waste with or without reinforcement layers, masticating agents, natural rubber, accelerators system, zinc oxide and sulfur, characterized, that the rubber waste mixture 2 to 6 wt .-%, in particular 2.5 to 4% by weight of an aliphatic aromatic soft resin in solid form, batched with silica, can be added, the mixing takes place on the roller (process variant II). 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Harz ein spezifisches Gewicht von 1,0 g/cm3 und eine Viskosität von 80 mPa×s bei 80°C aufweist. 3. The method according to claim 1, characterized in that the resin has a specific weight of 1.0 g / cm 3 and a viscosity of 80 mPa × s at 80 ° C. 4. Verfahren nach Anspruch 1 oder 3, dadurch gekennzeichnet, daß das Harz mit Naturkautschuk verbatcht ist.4. The method according to claim 1 or 3, characterized in that that the resin is baked with natural rubber. 5. Verfahren nach Anspruch 4, dadurch gekennzeichnet, daß der Mengenanteil von Harz zu Naturkautschuk etwa 1:2 beträgt.5. The method according to claim 4, characterized in that the proportion of resin to natural rubber is about 1: 2 is. 6. Verfahren nach Anspruch 2, dadurch gekennzeichnet, daß der Mengenanteil an Kieselsäure 25 bis 40 Gew.-%, insbe­ sondere 30 bis 35 Gew.-%, beträgt.6. The method according to claim 2, characterized in that the amount of silica 25 to 40 wt .-%, esp is particularly 30 to 35 wt .-%.
DE19904011794 1989-04-18 1990-04-12 Matrix prodn. from scrap rubber Withdrawn DE4011794A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904011794 DE4011794A1 (en) 1989-04-18 1990-04-12 Matrix prodn. from scrap rubber

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3912677 1989-04-18
DE19904011794 DE4011794A1 (en) 1989-04-18 1990-04-12 Matrix prodn. from scrap rubber

Publications (1)

Publication Number Publication Date
DE4011794A1 true DE4011794A1 (en) 1990-10-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904011794 Withdrawn DE4011794A1 (en) 1989-04-18 1990-04-12 Matrix prodn. from scrap rubber

Country Status (1)

Country Link
DE (1) DE4011794A1 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9100667U1 (en) * 1991-01-21 1992-02-27 Fehr, Werner, 8908 Krumbach, De
DE4306346A1 (en) * 1993-02-25 1993-10-14 Bueschleb Joachim Re-plasticisation waste rubber crumb - by mixing with zinc soap of long chain unsatd. carboxylic acid and subjecting to mechano chemical treatment
DE4335054C1 (en) * 1993-10-14 1995-02-23 Menzolit Gmbh Process for the preparation of SMC using recycled material
DE4425049C1 (en) * 1994-07-15 1996-01-18 Forschungsstelle Dr Kubsch Lab Process for reactivating already shredded waste rubber particles or shredded rubber waste
AT403053B (en) * 1995-01-12 1997-11-25 Wittner Ernestine Ch Dr Process for preparing a moulding composition
WO2002045930A2 (en) * 2000-12-04 2002-06-13 Innovative Elastics Limited Elastic article manufacture
EP2530106A2 (en) 2011-05-31 2012-12-05 ART Asamer Rubber Technology GmbH Method for manufacturing an elastomer-polymer compound

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9100667U1 (en) * 1991-01-21 1992-02-27 Fehr, Werner, 8908 Krumbach, De
DE4306346A1 (en) * 1993-02-25 1993-10-14 Bueschleb Joachim Re-plasticisation waste rubber crumb - by mixing with zinc soap of long chain unsatd. carboxylic acid and subjecting to mechano chemical treatment
DE4335054C1 (en) * 1993-10-14 1995-02-23 Menzolit Gmbh Process for the preparation of SMC using recycled material
DE4425049C1 (en) * 1994-07-15 1996-01-18 Forschungsstelle Dr Kubsch Lab Process for reactivating already shredded waste rubber particles or shredded rubber waste
AT403053B (en) * 1995-01-12 1997-11-25 Wittner Ernestine Ch Dr Process for preparing a moulding composition
WO2002045930A2 (en) * 2000-12-04 2002-06-13 Innovative Elastics Limited Elastic article manufacture
WO2002045930A3 (en) * 2000-12-04 2003-01-16 Innovative Elastics Ltd Elastic article manufacture
EP2530106A2 (en) 2011-05-31 2012-12-05 ART Asamer Rubber Technology GmbH Method for manufacturing an elastomer-polymer compound

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