DE3744727A1 - Process for recycling cured prepreg and resin waste - Google Patents

Process for recycling cured prepreg and resin waste

Info

Publication number
DE3744727A1
DE3744727A1 DE19873744727 DE3744727A DE3744727A1 DE 3744727 A1 DE3744727 A1 DE 3744727A1 DE 19873744727 DE19873744727 DE 19873744727 DE 3744727 A DE3744727 A DE 3744727A DE 3744727 A1 DE3744727 A1 DE 3744727A1
Authority
DE
Germany
Prior art keywords
waste
resin
prepreg
thermoplastic
temperatures
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.)
Granted
Application number
DE19873744727
Other languages
German (de)
Other versions
DE3744727C2 (en
Inventor
Wolfgang Guenther
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.)
Airbus Operations GmbH
Original Assignee
Messerschmitt Bolkow Blohm 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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Priority to DE19873717277 priority Critical patent/DE3717277C1/en
Priority to DE19873744727 priority patent/DE3744727A1/en
Priority claimed from DE19873717277 external-priority patent/DE3717277C1/en
Publication of DE3744727A1 publication Critical patent/DE3744727A1/en
Application granted granted Critical
Publication of DE3744727C2 publication Critical patent/DE3744727C2/de
Granted 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
    • 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
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/10—Conditioning or physical treatment of the material to be shaped by grinding, e.g. by triturating; by sieving; by filtering
    • 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
    • B29K2101/00—Use of unspecified macromolecular compounds as moulding material
    • B29K2101/10—Thermosetting resins
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/06—Condition, form or state of moulded material or of the material to be shaped containing reinforcements, fillers or inserts
    • 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
    • B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
    • B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Environmental & Geological Engineering (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)

Abstract

A process for producing semi-finished and finished products from cured prepreg and resin waste, in which this waste is collected, comminuted, mixed with a thermoplastic and moulded under pressures of 1 to 10 bar and at temperatures of 120 to 200@C in moulding presses, generally to form building-material boards of various sizes and shapes.

Description

Die Erfindung betrifft ein Verfahren zur Verwertung von ausgehär­ teten Prepreg- und Harzabfällen gemäß dem Oberbegriff des Anspruch 1.The invention relates to a method for the use of hardened Teten prepreg and resin waste according to the preamble of the claim 1.

Gegenwärtig werden Prepreg- und Harzabfälle in der Faserverbund­ materialien verarbeitenden Industrie, insbesondere bei der Her­ stellung von Verkehrsmitteln wie Luftfahrzeuge, unsortiert gesam­ melt und einer Abfallbeseitigung zugeführt. Eine Wiederverwertung oder Weiterverarbeitung dieser an sich wertvollen und hochwerti­ gen Abfallstoffe ist aus ökologischer und ökonomischer Sicht sinnvoll.Currently prepreg and resin wastes are in the fiber composite materials processing industry, especially in the manufacture Position of means of transport such as aircraft, unsorted overall melt and a waste disposal. A recycling or further processing of these valuable and high quality waste is from an ecological and economic point of view sensible.

Die bisher bekannt gewordenen Verfahren zur Nutzung von wieder­ aufgearbeiteten Prepreg- und Harzabfällen in einem Produktions­ prozeß gehen entweder von faserverstärkten Kunststoffenabfällen gleicher Art aus, beispielsweise eines ganz bestimmten Produktes (DE-OS 26 42 955), oder sie nutzen bei der Verwendung von Kunst­ stoffabfällen mit nicht ineinander löslichen Harzsorten zur Ver­ besserung der mechanischen Eigenschaften des späteren Produkts die haftvermittelnden Eigenschaften von zusätzlich in die Abfall­ gemische einzubringende Kunst- und/oder Naturfasern (DE-OS 25 58 987).The previously known methods for using again processed prepreg and resin waste in one production process go either from fiber-reinforced plastic waste of the same kind, for example a very specific product (DE-OS 26 42 955), or use them when using art waste with non-soluble types of resin for ver improvement of the mechanical properties of the later product the adhesive properties of additionally in the waste mixtures of synthetic and / or natural fibers to be introduced (DE-OS 25 58 987).

Zudem ist aus der DE-OS 24 22 804 ein Verfahren zur Herstellung eines sehr feinen Pulvers aus thermoplastischen Kunststoffabfällen bekannt, bei dem unter Anwendung eines tiefsiedenden und verflüs­ sigten Gases in vorteilhafter Weise beispielsweise Folien-, Fä­ den-, Stapelfasern und Gewebereste zerkleinert werden.In addition, DE-OS 24 22 804 describes a process for the production a very fine powder from thermoplastic waste known in which using a low-boiling and liquefied sigtes gas in an advantageous manner, for example, foil, fä den-, staple fibers and fabric remnants are crushed.

Die Aufgabe der Erfindung ist es, ein Verfahren vorzustellen, mit dem aus ausgehärteten Prepreg- und Harzabfällen Halb- und Fertig­ produkte hergestellt werden können, wobei abhängig vom Harztyp unterschiedliche Produktionschargen gefahren werden sollen. The object of the invention is to present a method with the semi-finished and finished from hardened prepreg and resin waste products can be manufactured, depending on the type of resin different production batches are to be run.  

Die Lösung dieser Aufgabe ergibt sich aus den Merkmalen des Hauptanspruchs. Vorteilhafte Ausgestaltungen und Weiterbildungen sind den Unteransprüchen zu entnehmen.The solution to this problem results from the features of Main claim. Advantageous refinements and developments can be found in the subclaims.

Die ausgehärteten Prepreg- und Harzabfälle werden getrennt nach Harztypen (z.B. epoxid- oder phenolhaltig) gesammelt und in der Regel in Räumen und Behältern zwischengelagert, in denen eine Temperatur von 0 bis -20°C und/oder eine relative Luftfeuchtig­ keit von höchstens 40% herrscht. Von diesem Lager gelangen die nach epoxid- und phenolhaltigen Harzen getrennten Abfallstoffe in verschiedenen Produktionschargen in eine vorzugsweise mit einem tiefsiedenden und verflüssigten Gas arbeitende Abkühleinrichtung, in der die Abfälle eine Temperatur von -100 bis -200°C erreichen.The hardened prepreg and resin waste are separated after Resin types (e.g. containing epoxy or phenol) collected and in the Usually stored temporarily in rooms and containers in which one Temperature from 0 to -20 ° C and / or a relative humidity maximum of 40%. From this camp the waste separated according to epoxy and phenolic resins in different production batches in one preferably with one low-boiling and liquefied gas cooling device, in which the waste reaches a temperature of -100 to -200 ° C.

Durch diesen Abkühlungsprozeß erfolgt teilweise eine Rißbildung in den Abfallstoffen, die den anschließenden Zerkleinerungsvor­ gang in geeigneten Zerkleinerungsmaschinen erleichtert. Hier wer­ den Abfallgranulate hergestellt, die in Abhängigkeit vom Verwen­ dungszweck und den mechanischen Eigenschaften der späteren Pro­ dukte Korngrößen von 0,5-5 · 10-3 m aufweisen.Through this cooling process, there is sometimes a crack in the waste materials, which facilitates the subsequent comminution process in suitable comminution machines. Here, who produces the waste granules, which, depending on the intended use and the mechanical properties of the later products, have grain sizes of 0.5-5 · 10 -3 m.

Anschließend werden die ausgehärteten und zerkleinerten Prepreg- und Harzabfälle mit einem Granulat aus einem Thermoplastabfall vermischt, zu beispielsweise Baustoffplatten geformt und ausge­ härtet. Hier ist ein volumenbezogenenes Mischungsverhältnis aus ausgehärteten Abfallstoffen auf Epoxid- oder Phenolharzbasis und Thermoplastabfall zwischen 1:99 und 50:50 zu wählen, wobei das Mischungsverhältnis von den geforderten Produkteigenschaften ab­ hängig ist.Then the hardened and shredded prepreg and resin wastes with granules from thermoplastic wastes mixed, formed into, for example, building material panels and formed hardens. Here is a volume-related mix ratio cured waste materials based on epoxy or phenolic resin and Thermoplastic waste to choose between 1:99 and 50:50, which is Mixing ratio depending on the required product properties pending.

Claims (2)

1. Verfahren zur Herstellung von Halb- und Fertigprodukten aus Prepreg- und Harzabfällen, bei dem die Abfälle gesammelt, unter Einwirkung eines tiefsiedenden und verflüssigten Gases ab­ gekühlt, zerkleinert, vermischt und unter Drücken von 1 bis 10 bar sowie bei Temperaturen von 120 bis 200°C zu Formlingen, insbe­ sondere zu Baustoffplatten unterschiedlicher Größe und Geometrie gepreßt werden, gekennzeichnet durch die Ver­ fahrensschritte
  • a) Sammeln der ausgehärteten Prepreg- und Harzabfälle getrennt nach epoxid- und phenolhaltigen Abfällen,
  • b) Abkühlen der Abfälle auf Temperaturen von ca. -100° bis -200°C
  • c) Zerkleinern der Abfälle auf Abmessungen zwischen 0,5-5 · 10-3 m,
  • d) Mischen des Abfallgranulats mit einem Granulat aus einem Thermoplastabfall,
  • e) Einbringen, Formen und Aushärten in einer Formpresse.
1. A process for the production of semi-finished and finished products from prepreg and resin waste, in which the waste is collected, cooled under the action of a low-boiling and liquefied gas, comminuted, mixed and under pressures of 1 to 10 bar and at temperatures of 120 to 200 ° C to be pressed into moldings, in particular into building material panels of different sizes and geometries, characterized by the process steps
  • a) collecting the hardened prepreg and resin waste separately according to epoxy and phenol-containing waste,
  • b) cooling the waste to temperatures of approximately -100 ° to -200 ° C
  • c) shredding the waste to dimensions between 0.5-5 · 10 -3 m,
  • d) mixing the waste granules with granules from a thermoplastic waste,
  • e) insertion, molding and curing in a molding press.
2. Verfahren nach Anspruch 1, dadurch gekenn­ zeichnet, daß das volumenbezogene Mischungsverhältnis zwi­ schen den ausgehärteten Abfallstoffen auf Epoxid- oder Phenol­ harzbasis und dem Thermoplastabfallstoff zwischen 1:99 und 50:50 liegt.2. The method according to claim 1, characterized records that the volume-based mixing ratio between hardened waste materials on epoxy or phenol resin base and the thermoplastic waste between 1:99 and 50:50 lies.
DE19873744727 1987-05-22 1987-05-22 Process for recycling cured prepreg and resin waste Granted DE3744727A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19873717277 DE3717277C1 (en) 1987-05-22 1987-05-22 Process for producing semi-finished and finished products from resin wastes
DE19873744727 DE3744727A1 (en) 1987-05-22 1987-05-22 Process for recycling cured prepreg and resin waste

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873717277 DE3717277C1 (en) 1987-05-22 1987-05-22 Process for producing semi-finished and finished products from resin wastes
DE19873744727 DE3744727A1 (en) 1987-05-22 1987-05-22 Process for recycling cured prepreg and resin waste

Publications (2)

Publication Number Publication Date
DE3744727A1 true DE3744727A1 (en) 1989-02-16
DE3744727C2 DE3744727C2 (en) 1989-06-29

Family

ID=25855905

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873744727 Granted DE3744727A1 (en) 1987-05-22 1987-05-22 Process for recycling cured prepreg and resin waste

Country Status (1)

Country Link
DE (1) DE3744727A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5589260A (en) * 1993-07-23 1996-12-31 Palboard Ltd. Method and apparatus for producing plastic products
US6588772B2 (en) 2000-12-28 2003-07-08 The Burton Corporation Sintered sheet plastic material and gliding board base material
CN102614972A (en) * 2012-01-21 2012-08-01 金安国纪科技股份有限公司 Methods for recovery treatment reutilization of prepreg offcuts

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4116025C2 (en) * 1991-05-16 1995-02-23 Infan Gmbh Chemnitz Process for the production of filled thermoplastic molded articles
DE19507218C1 (en) * 1995-03-02 1996-08-22 Daimler Benz Ag Process for dividing and separating self-adhesive plastic composites

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2422804A1 (en) * 1974-05-10 1975-11-20 Ultrex Chemie Gmbh Fine powder from thermoplastic resin waste - by consolidating, granulating, and finely grinding while contacting with liquefied gas
DE2558987A1 (en) * 1974-12-31 1976-07-08 Inst Nat Rech Chimique METHOD FOR MANUFACTURING FINISHED AND SEMI-FINISHED PRODUCTS FROM UNSORTED MIXTURES OF SYNTHETIC RESIN WASTE
DE2642955A1 (en) * 1976-09-24 1978-03-30 Friedrich Wilhelm Lippenberger Insulating and sealing board prodn. - by impregnating textile punch waste with resin and processing at high temp.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2422804A1 (en) * 1974-05-10 1975-11-20 Ultrex Chemie Gmbh Fine powder from thermoplastic resin waste - by consolidating, granulating, and finely grinding while contacting with liquefied gas
DE2558987A1 (en) * 1974-12-31 1976-07-08 Inst Nat Rech Chimique METHOD FOR MANUFACTURING FINISHED AND SEMI-FINISHED PRODUCTS FROM UNSORTED MIXTURES OF SYNTHETIC RESIN WASTE
DE2642955A1 (en) * 1976-09-24 1978-03-30 Friedrich Wilhelm Lippenberger Insulating and sealing board prodn. - by impregnating textile punch waste with resin and processing at high temp.

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5589260A (en) * 1993-07-23 1996-12-31 Palboard Ltd. Method and apparatus for producing plastic products
US6588772B2 (en) 2000-12-28 2003-07-08 The Burton Corporation Sintered sheet plastic material and gliding board base material
CN102614972A (en) * 2012-01-21 2012-08-01 金安国纪科技股份有限公司 Methods for recovery treatment reutilization of prepreg offcuts
CN103769290A (en) * 2012-01-21 2014-05-07 金安国纪科技股份有限公司 Reutilization method of prepreg edge trimming material
CN102614972B (en) * 2012-01-21 2014-05-07 金安国纪科技股份有限公司 Methods for recovery treatment reutilization of prepreg offcuts
CN103769289A (en) * 2012-01-21 2014-05-07 金安国纪科技股份有限公司 Reutilization method of prepreg edge trimming material
CN103861717A (en) * 2012-01-21 2014-06-18 金安国纪科技股份有限公司 Prepreg cutting edge material recycling method
CN103769289B (en) * 2012-01-21 2015-10-07 金安国纪科技股份有限公司 A kind of reuse method of prepreg cutting edge material
CN103861717B (en) * 2012-01-21 2015-10-07 金安国纪科技股份有限公司 A kind of reuse method of prepreg cutting edge material

Also Published As

Publication number Publication date
DE3744727C2 (en) 1989-06-29

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