DE2819077A1 - Laminate for strengthening building made of timber - is sandwich structure made of fibre reinforced core coated with glue that partly penetrates the core - Google Patents

Laminate for strengthening building made of timber - is sandwich structure made of fibre reinforced core coated with glue that partly penetrates the core

Info

Publication number
DE2819077A1
DE2819077A1 DE19782819077 DE2819077A DE2819077A1 DE 2819077 A1 DE2819077 A1 DE 2819077A1 DE 19782819077 DE19782819077 DE 19782819077 DE 2819077 A DE2819077 A DE 2819077A DE 2819077 A1 DE2819077 A1 DE 2819077A1
Authority
DE
Germany
Prior art keywords
core
laminate
glue
timber
fibre 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.)
Granted
Application number
DE19782819077
Other languages
German (de)
Other versions
DE2819077C2 (en
Inventor
Karl-Josef Ing Grad Brinkmann
Rudolf Dipl Ing Schmidt
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.)
Bayer AG
Original Assignee
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 Bayer AG filed Critical Bayer AG
Priority to DE19782819077 priority Critical patent/DE2819077C2/en
Publication of DE2819077A1 publication Critical patent/DE2819077A1/en
Application granted granted Critical
Publication of DE2819077C2 publication Critical patent/DE2819077C2/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/08—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers
    • B29C70/088—Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers and with one or more layers of non-plastics material or non-specified material, e.g. supports
    • 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
    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/28—Shaping operations therefor
    • B29C70/40—Shaping or impregnating by compression not applied
    • B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • 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
    • B29K2711/00—Use of natural products or their composites, not provided for in groups B29K2601/00 - B29K2709/00, for preformed parts, e.g. for inserts
    • B29K2711/14—Wood, e.g. woodboard or fibreboard

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Laminated Bodies (AREA)

Abstract

Reinforced laminate used in erection of wooden structures comprises a fibre reinforced core with glueable coating. The resin used for bonding core and coating together penetrates the latter partly but not completely. The prod. is suitably for use in large-scale construction of wooden buildings, e.g. assembly or sports halls, and cupolas.

Description

VerstärkungsschichtstoffReinforcement laminate

Die Erfindung betrifft einen Verstärkungsschichtstoff für den Holzbau,bestehend aus einem Kern und mindestens einer leimfähigen Deckschicht,und ein Verfahren zur Herstellung des Verstärkungsschichtstoffs.The invention relates to a reinforcing laminate for wood construction, consisting of a core and at least one adhesive cover layer, and a method for Manufacture of the reinforcement laminate.

Beim Hallen- und Kuppelbau werden als Deckenträger Holzleimbinder verwendet. Man versucht, die Tragfähigkeit solcher Holzkonstruktionen durch Stahiverstärkung zu erhöhen. Wegen der unterschiedlichen Materialeigenschaften ist die Verbindung von Flachstahl, Rundstahl oder Stahlseilen mit Holz schwierig. Einklemmen in das Holz reicht nicht aus; geeignete Kleber sind nicht zugelassen; es verbleibt im wesentlichen nur die Befestigung des Stahls am Holz durch Bolzen. Da die Korrosion von Stahl nicht zu vernachlässigen ist, muß der Stahlquerschnitt überdimensioniert werden. Es ist bekannt, daß faserverstärkte Kunststoffe große Kräfte übertragen können. Jedoch ist die Befestigung faserverstärkter Kunststoffteile am Holz ähnlich problematisch wie die von Stahl. Kleber auf Epoxid-, Polyester- oder Polyurethan-Harzbasis sind im Holzleimbau nicht eingeführt. Faserverstärkte Kunststoffe sind in die übliche Holzleimbinderfertigung nicht integrierbar.In the case of hall and dome construction, laminated wood beams are used as ceiling beams used. Attempts are made to increase the load-bearing capacity of such wooden structures by reinforcing them with steel to increase. Because of the different material properties, the connection is of flat steel, round steel or steel cables with wood difficult. Wedging in the Wood is not enough; suitable adhesives are not permitted; it essentially remains just fastening the steel to the wood by bolts. Because the corrosion of steel is not to be neglected, the steel cross-section must be oversized will. It is known that fiber-reinforced plastics can transmit great forces. However, the attachment of fiber-reinforced plastic parts to wood is similarly problematic like that of steel. Adhesives based on epoxy, polyester or polyurethane resin not introduced in glued wood construction. Fiber reinforced plastics are commonplace Glulam production cannot be integrated.

Aufgabe der Erfindung ist es, einen Verstärkungsschichtstoff zu entwicklen, der in die Holzleimbinderfertigung integrierbar ist. Diese Aufgabe wird durch einen Verstärkungsschichtstoff gelöst, der dadurch gekennzeichnet ist, daß der Kern durch Fasern verstärkt ist und das Harz zum Verbinden von Kern- und Deckschicht die Deckschicht teilweise aber nicht vollständig durchdringt. Die erfindungsgemäßen Verstärkungsschichtstoffe lassen sich dadurch herstellen, daß auf imprägnierte Faserstränge Deckschichten aufgeklebt werden und der Verstärkungsschichtstoff dann eine Heißpreßstrecke durchläuft.The object of the invention is to develop a reinforcing laminate, which can be integrated into the laminated timber production. This task is carried out by a Reinforcing laminate solved, which is characterized in that the core by Fibers is reinforced and the resin for connecting the core and cover layer is the cover layer partially but not completely penetrated. The reinforcing laminates of the invention can be produced by covering layers on impregnated fiber strands are glued and the reinforcing laminate then passes through a hot-pressing section.

Der erfindungsgemäße Verstärkungsschichtstoff läßt sich bei geeigneter Wahl der Deckschicht, die in vielen Fällen Holz ist, problemlos mit Holz verbinden. Die Ubliche Technik im Holzbau, das Verkleben der Holzleimbinder mit Klebern auf Harnstoff-Melamin-Basis ist mit den erfindungsgemäßen Elementen ohne Xnderung möglich. Sie können mit den zugelassenen üblichen Leimen verarbeitet werden.The reinforcing laminate according to the invention can be used with suitable Choosing the top layer, which in many cases is wood, easily connects with wood. The usual technique in timber construction, the gluing of the glued wood beams with adhesives Urea melamine base is possible with the elements according to the invention without change. They can be processed with the usual approved glues.

Als Kern sind vorzugsweise unidirektional mit Glas oder Kohlenstoff-Fasern verstärkte Kunststoffkörper geeignet.The core is preferably unidirectional with glass or carbon fibers reinforced plastic body suitable.

Als Deckschichten kommen neben Holz insbesondere Pappe, Vliese oder Kraftpapiere auf Zellulosebasis in Frage. In vielen Fällen sind als Deckschicht Werkstoffkombinationen mit Sperrschichten zweckmäßig, ein typisches Beispiel ist Sperrholz. Mit solchen Deckschichten mit mindestens einer Sperrschicht läßt sich in besonders einfacher und sicherer Weise erreichen, daß einerseits die Kernlage mit der Deckschicht gut verbunden ist und die hohe Festigkeit des Kerns durch entsprechende Übertragungsmöglichkeiten der Spannung weitgehend ausnutzbar ist, andererseits aber die Deckschicht nicht durchimprägniert ist, was den Verbund der Deckschicht mit Holz erschweren würde, weil es die Holzleime in ihrer Reaktion stören könnte. Aufgrund der eingesetzten Werkstoffe treten keine Korrosionsprobleme auf, und es sind daher auch keine besonderen Korrosionsschutzmaßnahmen erforderlich.In addition to wood, the top layers are in particular cardboard, fleece or Cellulosic kraft papers in question. In many cases they are used as a top layer Material combinations with barrier layers expedient, a typical one Example is plywood. With such top layers with at least one barrier layer can be achieved in a particularly simple and safe manner that on the one hand the Core layer is well connected to the top layer and the high strength of the core Can be used to a large extent due to the corresponding transmission options for the voltage is, on the other hand, but the top layer is not fully impregnated, which is the composite The top layer with wood would make it more difficult because it would make the wood glue in their reaction could disturb. Due to the materials used, there are no corrosion problems on, and therefore no special corrosion protection measures are required.

Der Verstärkungsschichtstoff und ein Verfahren zu seiner diskontinuierlichen oder kontinuierlichen Herstellung ist in der Zeichnung schematisch dargestellt. Es zeigen: Figur 1 Schnitt durch einen Verstärkungsschichtstoff; Figur 2 Verfahren zur Herstellung des Verstärkungsschichtstoffes.The reinforcement laminate and a method for its discontinuous or continuous production is shown schematically in the drawing. The figures show: FIG. 1 a section through a reinforcing laminate; Figure 2 procedure for the production of the reinforcement laminate.

Der Kern 1 besteht aus einem unidirektional mit Glasfasern 2 verstärktem, mit ungesättigten Polyesterharzen getränktem Band. Es hat eine Breite von 70-100 mm und eine Dicke von 1-3 mm. Auf beiden Seiten ist eine Sperrholzschicht 4 aufgeklebt. Die Schicht 5 ist für das Imprägnierharz undurchlässig. Der Verbund 6 zwischen Kerniage 1 und Deckschicht 4 wird durch das ungesättigte Polyesterharz 3 vermittelt, der Kern 1 wird vor der Aushärtung des Harzes 3 mit den beiden Deckschichten 4 verpreßt. Die Schicht 7 kann in bekannter Weise mit Holz verleimt werden. Bei belasteten Biegeträgern reißt der Holzverbund in sich, bevor das aufgeleimte Verstärkungsschichtstoffteil Schaden erleidet.The core 1 consists of a unidirectional reinforced with glass fibers 2, tape impregnated with unsaturated polyester resins. It is 70-100 wide mm and a thickness of 1-3 mm. A layer of plywood 4 is glued on both sides. The layer 5 is impermeable to the impregnation resin. The composite 6 between Kerniage 1 and top layer 4 is mediated by the unsaturated polyester resin 3, the Core 1 is pressed with the two cover layers 4 before the resin 3 hardens. the Layer 7 can be glued to wood in a known manner. With loaded bending beams the wood composite tears before the glued-on reinforcing laminate part Suffers damage.

Eine Möglichkeit zur Herstellung des Verstärkungsschichtstoffs nach Figur 1 ist in Figur 2 dargestellt. Die Faserstränge laufen von der Rolle 8 in das Harzbad 9. Sie verlassen imprägniert als Faserharzkombination 10 das Bad und werden in diesem Zustand mit den beiden Deckschichten 11 kaschiert. In der Heizpresse 12 wird die Harz lage ausgehärtet und das fertige Holzbinderverstärkungselement 13 verläßt die Preßstrecke.One way of making the reinforcing laminate according to FIG. 1 is shown in FIG. The fiber strands run from the roll 8 into the Resin bath 9. You leave the bath impregnated as a fiber resin combination 10 and become laminated with the two cover layers 11 in this state. In the heating press 12 the resin layer is cured and the finished wood binder reinforcement element 13 leaves the press line.

LeerseiteBlank page

Claims (5)

Patentansprüche ( 1) Verstärkungsschichtstoff für den Holzbau, bestehend aus einem Kern mit mindestens einer leimfähigen Deckschicht, dadurch gekennzeichnet, daß der Kern (1) durch Fasern (2) verstärkt ist und das Harz (6) zum Verbinden von Kern- und Deckschicht die Deckschicht (4) teilweise aber nicht vollständig durchdringt. Claims (1) Reinforcing laminate for timber construction, consisting of a core with at least one glue-capable cover layer, characterized in that that the core (1) is reinforced by fibers (2) and the resin (6) for connecting The core and cover layers partially but not completely penetrate the cover layer (4). 2) Verstärkungsschichtstoff nach Anspruch 1, dadurch gekennzeichnet, daß die Deckschicht (4) eine Sperrschicht (5) enthält. 2) reinforcing laminate according to claim 1, characterized in that that the cover layer (4) contains a barrier layer (5). 3) Verfahren zur Herstellung des Verstärkungsschichtstoffes nach Ansprüchen 1 und 2, dadurch gekennzeichnet, daß auf imprägnierte Faserstränge (10) Deckschichten (11) aufgeklebt werden und der Verstärkungsschichtstoff dann eine Heizpreßstrecke (12) durchläuft. 3) Method of making the reinforcing laminate according to Claims 1 and 2, characterized in that the impregnated fiber strands (10) Cover layers (11) are glued on and the reinforcing laminate then one Heat press section (12) passes through. 4) Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der noch nicht ausgehärtete Kern (1) mit dem Imprägnierharz (3) mit der Deckschicht (4) verklebt wird. 4) Method according to claim 3, characterized in that the still uncured core (1) with the impregnation resin (3) bonded to the cover layer (4) will. 5) Verfahren nach Anspruch 3, dadurch gekennzeichnet, daß der ausgehärtete Kern (1) mit Klebern (6) auf der Basis Epoxid, Polyester oder Polyurethan mit der Deckschicht (4) verklebt wird. 5) Method according to claim 3, characterized in that the hardened Core (1) with adhesives (6) based on epoxy, polyester or polyurethane with the Cover layer (4) is glued.
DE19782819077 1978-04-29 1978-04-29 Reinforcement laminate Expired DE2819077C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19782819077 DE2819077C2 (en) 1978-04-29 1978-04-29 Reinforcement laminate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782819077 DE2819077C2 (en) 1978-04-29 1978-04-29 Reinforcement laminate

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Publication Number Publication Date
DE2819077A1 true DE2819077A1 (en) 1979-11-08
DE2819077C2 DE2819077C2 (en) 1986-07-03

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506455A1 (en) * 1985-02-23 1986-09-04 Wolfgang 7958 Laupheim Baumann Item of equipment, to be used in the building industry when erecting buildings or the like, for supporting, retaining, clamping or absorbing forces in similar ways
DE3509101A1 (en) * 1985-03-14 1986-09-25 Günter 2803 Weyhe Rohlfs Wooden structural part, especially door-wing frame
DE29614754U1 (en) * 1996-08-24 1996-11-21 Wenzler, Klaus-Peter, Dipl.-Ing. (FH), 78665 Frittlingen Glued wood support for wooden skeleton construction

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH398023A (en) * 1962-04-03 1965-08-31 Kengeter Kurt Wood construction element and its use
DE2451639A1 (en) * 1974-10-30 1976-05-06 Hans Binker Increasing strength of woods and building materials - rods of glass fibre reinforced material inserted into cut notches
DE2531656A1 (en) * 1975-07-16 1977-02-03 Josef Buchholz Reinforced, load bearing, timber structural component - has grooved steel rod reinforcements embedded in a filled plastics compsn.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH398023A (en) * 1962-04-03 1965-08-31 Kengeter Kurt Wood construction element and its use
DE2451639A1 (en) * 1974-10-30 1976-05-06 Hans Binker Increasing strength of woods and building materials - rods of glass fibre reinforced material inserted into cut notches
DE2531656A1 (en) * 1975-07-16 1977-02-03 Josef Buchholz Reinforced, load bearing, timber structural component - has grooved steel rod reinforcements embedded in a filled plastics compsn.

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3506455A1 (en) * 1985-02-23 1986-09-04 Wolfgang 7958 Laupheim Baumann Item of equipment, to be used in the building industry when erecting buildings or the like, for supporting, retaining, clamping or absorbing forces in similar ways
DE3509101A1 (en) * 1985-03-14 1986-09-25 Günter 2803 Weyhe Rohlfs Wooden structural part, especially door-wing frame
DE29614754U1 (en) * 1996-08-24 1996-11-21 Wenzler, Klaus-Peter, Dipl.-Ing. (FH), 78665 Frittlingen Glued wood support for wooden skeleton construction

Also Published As

Publication number Publication date
DE2819077C2 (en) 1986-07-03

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