DE19544429A1 - Fibre reinforced rigid polystyrene foam - Google Patents

Fibre reinforced rigid polystyrene foam

Info

Publication number
DE19544429A1
DE19544429A1 DE1995144429 DE19544429A DE19544429A1 DE 19544429 A1 DE19544429 A1 DE 19544429A1 DE 1995144429 DE1995144429 DE 1995144429 DE 19544429 A DE19544429 A DE 19544429A DE 19544429 A1 DE19544429 A1 DE 19544429A1
Authority
DE
Germany
Prior art keywords
styrofoam
fiber
beads
foam
reinforced
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Withdrawn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
DE1995144429
Other languages
German (de)
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.)
Hofbauer Lothar Dr-Ing 13088 Berlin De
Original Assignee
Hofbauer Lothar Dr-Ing 13088 Berlin De
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 Hofbauer Lothar Dr-Ing 13088 Berlin De filed Critical Hofbauer Lothar Dr-Ing 13088 Berlin De
Priority to DE1995144429 priority Critical patent/DE19544429A1/en
Publication of DE19544429A1 publication Critical patent/DE19544429A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/0085—Use of fibrous compounding ingredients
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
    • B29C44/34—Auxiliary operations
    • B29C44/36—Feeding the material to be shaped
    • B29C44/38—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length
    • B29C44/44—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form
    • B29C44/445—Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in solid form in the form of expandable granules, particles or beads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
    • B29C70/02—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements, e.g. non-specified reinforcements, fibrous reinforcing inserts and fillers, e.g. particulate fillers, incorporated in matrix material, forming one or more layers and with or without non-reinforced or non-filled layers
    • B29C70/021—Combinations of fibrous reinforcement and non-fibrous material
    • B29C70/025—Combinations of fibrous reinforcement and non-fibrous material with particular filler
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/22—After-treatment of expandable particles; Forming foamed products
    • C08J9/228—Forming foamed products
    • 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
    • B29K2105/16—Fillers
    • B29K2105/165—Hollow fillers, e.g. microballoons or expanded particles
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Composite Materials (AREA)
  • Mechanical Engineering (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Fibre reinforced polystyrene rigid foam (styropor) has synthetic fibres (esp. hydrophilised PAN or PVA fibres) incorporated with the pre-expanded polystyrene beads into the final moulding and shaping stage so that the fibres become welded firmly into the shells of the expanded polystyrene beads in the final foam.

Description

Styroporhartschaum auf der Basis von Polystyrol wird als Wärmedämmaterial in großem Umfang vorzugsweise als Platten im Bauwesen aber auch als Verpackungsmaterial einge­ setzt.Styrofoam foam based on polystyrene is used as a thermal insulation material in large Scope preferably used as panels in construction but also as packaging material puts.

Die guten Wärmedämmeigenschaften und die niedrigen Material- und Herstellungskosten des Styropors (expandiertes Polystyrol) und die Umweltverträglichkeit des Polystyrols haben zu einer großen Verbreitung als Wärmedämmstoff geführt.The good thermal insulation properties and the low material and manufacturing costs of polystyrene (expanded polystyrene) and the environmental compatibility of polystyrene led to widespread use as thermal insulation.

Der Einsatz von Styropor wirft Probleme auf, wenn höhere Festigkeitswerte der Platten z. B. als tragende Elemente oder Abriebfestigkeiten an der Plattenoberfläche notwendig werden. Für diese Einsatzfälle müssen dann die viel teueren Polyurethan(PUR)-Hartschaumplatten bzw. Polyurethan(PUR)-Formteile verwendet werden.The use of polystyrene poses problems when higher strength values of the panels e.g. B. be necessary as load-bearing elements or abrasion resistance on the plate surface. The much expensive polyurethane (PUR) rigid foam panels then have to be used for these applications or polyurethane (PUR) molded parts can be used.

Aufgabe der Erfindung ist es, den Styroporhartschaum in seinen Festigkeitseigenschaften weiter zu verbessern und damit seine Einsatzmöglichkeiten als tragende Elemente zu er­ weitern. Die Verfestigung der Oberfläche ist eine weitere Forderung, um z. B. bei Außen­ verkleidungen von Gebäuden, vereinfachte und kostengünstigere Putzaufbauten anbringen zu können. Insgesamt geht es um die Erschließung weiterer Einsatzmöglichkeiten des Sty­ ropors als wärmedämmender Konstruktionswerkstoff.The object of the invention is the styrofoam foam in its strength properties continue to improve and thus its possible uses as load-bearing elements continue. The consolidation of the surface is a further requirement in order, for. B. outside Install cladding of buildings, simplified and less expensive plaster structures to be able to. Overall, it is about tapping into other possible uses of the Sty ropors as a heat-insulating construction material.

Vom Beton ist bekannt, daß durch ein Armieren mit Fasern aus verschiedenen Werk­ stoffen, wie Stahl, Glas, Kunststoffen die Festigkeitswerte des Betons erheblich gesteigert werden können.From concrete it is known that by reinforcing with fibers from different works materials such as steel, glass, plastics significantly increase the strength values of the concrete can be.

Die in den letzten Jahren zunehmend verwendeten Kunststoffasern auf der Basis von Polyacrylnitril (PAN) und Polivinylalkohol (PVA) u. a. haben z. B. die Herstellung von asbest­ freien Faserzementplatten im großtechnischen Maßstab ermöglicht.The synthetic fibers based on Polyacrylonitrile (PAN) and polyvinyl alcohol (PVA) u. a. have z. B. the production of asbestos free fiber cement slabs on an industrial scale.

Die Möglichkeiten des Armierens von Styropor mit Kunststoffasern unter besonderer Be­ achtung des Ausgangsmaterials und der Struktur des Styroporhartschaumes wurden expe­ rimentell untersucht und die erfindungsgemäße Lösung zum Erzielen eines in seinen Ei­ genschaften verbesserten Styroporhartschaumes mit dem Einlagern von Kunststoffasern vorzugsweise hydrophilierte PAN-Fasern und PVA-Fasern zwischen den extrudierten Sty­ roporkügelchen gefunden.The possibilities of reinforcing styrofoam with plastic fibers with special emphasis attention to the starting material and the structure of the styrofoam foam was expe rimentally examined and the solution according to the invention for achieving one in his egg properties of improved styrofoam foam with the incorporation of plastic fibers preferably hydrophilized PAN fibers and PVA fibers between the extruded sty ropor beads found.

Mit der Veränderung der Einsatzmenge der Kunststoffasern ist eine Steuerung der Festig­ keitswerte besonders der Biegefestigkeit, der Elastizität und der Abriebfestigkeit möglich. Abhängig von den vorgesehenen Eigenschaften des Styroporhartschaumes kann der Anteil der Kunststoffasern zwischen 0,3 bis 3% des Gewichtes des eingesetzten extrudierten Sty­ ropors des Styroporhartschaumblockes betragen.With the change in the amount of plastic fibers used, the Festig is controlled values especially of the bending strength, the elasticity and the abrasion resistance are possible. Depending on the intended properties of the styrofoam foam, the proportion the plastic fibers between 0.3 to 3% of the weight of the extruded sty used ropors of the styrofoam foam block.

Als vorteilhaft haben sich Armierungsfaserlängen vom 1-1,5fachen des Durchmessers der Styroporhartschaumkügelchen in der fertigen Styroporhartschaumplatte erwiesen.Reinforcing fiber lengths of 1-1.5 times the diameter of have proven to be advantageous Styrofoam foam balls have been proven in the finished styrofoam foam sheet.

Die sich aus dem Einsatz von Kunststoffasern im Styroporhartschaum ergebenden verbes­ serten Eigenschaften betreffen eine wesentlich höhere Biegefestigkeit, Elastizität sowie Abriebfestigkeit bei Platten zur Wärmedämmung im Bauwesen. Es sind damit großflächigere Wandplatten, vor allem Dachplatten aber auch Trittschaldämmplatten herstellbar. The verbs resulting from the use of plastic fibers in styrofoam foam Serter properties concern a much higher bending strength, elasticity as well Abrasion resistance for thermal insulation boards in construction. It is with it Larger wall panels, especially roof panels but also impact sound insulation panels producible.  

Mit dem Einsatz der Kunststoffaser im Styroporhartschaum sind Formelemente, wie ziegelimitierte Dachplatten herstellbar.With the use of plastic fibers in styrofoam foam, shaped elements such as tile-limited roof tiles can be produced.

Durch die erhöhten Festigkeitswerte können die Rohdichten bei gleichen und verbesserten Eigenschaften des Styropors gesenkt werden, damit steigen die Wärmedämmwerte beson­ ders bei den bisher dichteren mechanisch hochbelastbaren Styroporelementen.Due to the increased strength values, the bulk densities can be the same and improved Properties of the styrofoam are reduced, so that the thermal insulation values increase this is the case with the previously denser, mechanically heavy-duty polystyrene elements.

Die Kosten aus der Sicht des Materialeinsatzes sind etwa gleich gegenüber den bisherigen Styroporhartschaumplatten.The costs from the point of view of the use of materials are roughly the same compared to the previous ones Polystyrene foam sheets.

Die erfindungsgemaßen Vorteile ergeben sich vorrangig aus den verbesserten Eigenschaf­ ten und der daraus abgeleiteten vergrößerten Einsatzbreite der Styroporhartschaumplatten.The advantages according to the invention result primarily from the improved properties ten and the derived increased range of use of the styrofoam foam sheets.

Die aus den Versuchen sich ergebenden technologischen Neuerungen der erfinderischen Lösung betreffen:The technological innovations resulting from the tests of the inventive Solution concern:

  • - Das Vereinzeln und gleichmäßige Mischen der hydrophilierten PAN- bzw. PVA-Fasern mit den extrudierten Styroporkügelchen vor dem Einbringen in den Autoklaven. Abhängig von der Schäumanlage (Autoklaven) kann die Faser getrennt von den vorgeschäumten Styroporkügelchen in den Autoklaven direkt eingebracht werden oder die Faser wird zusammen mit dem vorgeschäumten Styroporkügelchen gemischt und gemeinsam in den Autoklaven eingebracht.- The separation and uniform mixing of the hydrophilized PAN or PVA fibers with the extruded styrofoam beads before introduction into the autoclave. Depending on the foaming system (autoclave), the fiber can be separated from the pre-expanded polystyrene beads can be introduced directly into the autoclave or the fiber is mixed together with the pre-expanded styrofoam bead and introduced into the autoclave together.
  • - Zum sicheren Verschweißen der Fasern mit den Styroporkügelchen und der eigenen Vernetzung der Fasern erfolgt eine Veränderung des technologischen Regimes im Autoklaven beim Extrudieren des Styroporhartschaumes.- For securely welding the fibers to the styrofoam beads and your own Networking of the fibers takes place a change in the technological regime in the Autoclave when extruding the styrofoam foam.
  • - Die Verringerung der Verdichtung bei Einhaltung der Dämmwerte von elastifizierten Trittschaldämmplatten.- The reduction of compression while maintaining the insulation values of elasticized Impact insulation boards.

Claims (5)

1. Faserverstärkter Styroporhartschaum dadurch gekennzeichnet, daß zwischen den Styroporhartschaumkügelchen Kunststoffasern vorzugsweise hydrophilierte PAN oder PVA-Fasern eingebracht und im technologischen Prozeß der Aufschäumung und Ausformung mit der Hülle der Styroporkügelchen fest verschweißt werden.1. Fiber-reinforced styrofoam foam, characterized in that between the styrofoam foam beads plastic fibers preferably introduced hydrophilized PAN or PVA fibers and are firmly welded in the technological process of foaming and molding with the shell of the styrofoam beads. 2. Faserverstärkter Styroporhartschaum nach Anspruch 1, dadurch gekennzeichnet, daß Styroporhartschaum mit den verschweißten Kunststoffasern wesentliche Verbesserungen der mechanischen Eigenschaften, wie Biegefestigkeit, Elastizität und Abriebfestigkeit erhält und somit seine Einsatzbreite erheblich vergrößert werden kann.2. Fiber-reinforced styrofoam foam according to claim 1, characterized in that that styrofoam foam with the welded plastic fibers essential Improvements in mechanical properties such as flexural strength, elasticity and maintains abrasion resistance and thus significantly increases its range of use can be. 3. Faserverstärkter Styroporhartschaum nach Anspruch 1, dadurch gekennzeichnet, daß die vereinzelten Kunststoffasern vor dem endgültigen Aufschäumprozeß im Autoklaven mit den Styroporkügelchen gleichmäßig vermischt werden oder das Vermischen der vereinzelten Kunststoffasern mit den vorgeschäumten Styropor­ kügelchen vor dem Einbringen in den Autoklaven erfolgt.3. Fiber-reinforced styrofoam foam according to claim 1, characterized in that that the isolated plastic fibers before the final foaming process in Autoclave mixed with the styrofoam beads evenly or that Mix the separated synthetic fibers with the pre-expanded styrofoam beads before inserting them into the autoclave. 4. Faserverstärkter Styroporhartschaum nach Anspruch 1, dadurch gekennzeichnet, daß die Faserlängen im Bereich des 1-1,5fachen des Durchmessers der aufgeschäumten Styroporkügelchen liegen.4. Fiber-reinforced styrofoam foam according to claim 1, characterized in that that the fiber lengths in the range of 1-1.5 times the diameter of the foamed polystyrene beads. 5. Faserverstärkter Styroporhartschaum nach Anspruch 1, dadurch gekennzeichnet, daß die Höhe der Beimischungen der Kunststoffasern abhängig von den gewünsch­ ten Eigenschaften zwischen 0,3-3 Gewichtsprozent des Styropors betragen können.5. Fiber-reinforced styrofoam foam according to claim 1, characterized in that the amount of admixture of plastic fibers depending on the desired properties between 0.3-3 percent by weight of styrofoam can.
DE1995144429 1995-09-01 1995-09-01 Fibre reinforced rigid polystyrene foam Withdrawn DE19544429A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1995144429 DE19544429A1 (en) 1995-09-01 1995-09-01 Fibre reinforced rigid polystyrene foam

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Application Number Priority Date Filing Date Title
DE1995144429 DE19544429A1 (en) 1995-09-01 1995-09-01 Fibre reinforced rigid polystyrene foam

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DE19544429A1 true DE19544429A1 (en) 1997-03-06

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DE1995144429 Withdrawn DE19544429A1 (en) 1995-09-01 1995-09-01 Fibre reinforced rigid polystyrene foam

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808325A1 (en) * 1998-02-27 1999-09-09 Fraunhofer Ges Forschung Fiber-reinforced thermoplastic molding compositions useful for extrusion, injection or melt compression molding
FR2786430A1 (en) * 1998-12-01 2000-06-02 Univ Metz Laboratoire De Physi CELLULAR COMPOSITE MATERIAL AND PRODUCTS OBTAINED FROM SUCH MATERIAL
WO2018124986A1 (en) * 2016-12-28 2018-07-05 Akay Onur Fiber reinforced expanded polystyrene (eps) foam block

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19808325A1 (en) * 1998-02-27 1999-09-09 Fraunhofer Ges Forschung Fiber-reinforced thermoplastic molding compositions useful for extrusion, injection or melt compression molding
FR2786430A1 (en) * 1998-12-01 2000-06-02 Univ Metz Laboratoire De Physi CELLULAR COMPOSITE MATERIAL AND PRODUCTS OBTAINED FROM SUCH MATERIAL
WO2000032380A1 (en) * 1998-12-01 2000-06-08 21 Composites S.A. Composite cellular material and products obtained therefrom
WO2018124986A1 (en) * 2016-12-28 2018-07-05 Akay Onur Fiber reinforced expanded polystyrene (eps) foam block

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