WO2018188778A1 - Paper and thus produced honeycomb structure - Google Patents

Paper and thus produced honeycomb structure Download PDF

Info

Publication number
WO2018188778A1
WO2018188778A1 PCT/EP2018/000160 EP2018000160W WO2018188778A1 WO 2018188778 A1 WO2018188778 A1 WO 2018188778A1 EP 2018000160 W EP2018000160 W EP 2018000160W WO 2018188778 A1 WO2018188778 A1 WO 2018188778A1
Authority
WO
WIPO (PCT)
Prior art keywords
fibers
weight
paper
honeycomb structure
aramid
Prior art date
Application number
PCT/EP2018/000160
Other languages
German (de)
French (fr)
Inventor
Florian Hesselbach
Marc Steinmayer
Angelika ENDRES
Original Assignee
Diehl Aviation Laupheim Gmbh
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 Diehl Aviation Laupheim Gmbh filed Critical Diehl Aviation Laupheim Gmbh
Priority to CN201880019248.9A priority Critical patent/CN110475930A/en
Priority to EP18718390.0A priority patent/EP3596268A1/en
Publication of WO2018188778A1 publication Critical patent/WO2018188778A1/en

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/20—Organic non-cellulose fibres from macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/26—Polyamides; Polyimides
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B27/10—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/12—Layered products comprising a layer of synthetic resin next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B27/00—Layered products comprising a layer of synthetic resin
    • B32B27/38—Layered products comprising a layer of synthetic resin comprising epoxy resins
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/002—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B29/005—Layered products comprising a layer of paper or cardboard as the main or only constituent of a layer, which is next to another layer of the same or of a different material next to another layer of paper or cardboard layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/10—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material
    • B32B3/12—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a discontinuous layer, i.e. formed of separate pieces of material characterised by a layer of regularly- arranged cells, e.g. a honeycomb structure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form
    • B32B3/26—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer
    • B32B3/28—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar form; Layered products having particular features of form characterised by a particular shape of the outline of the cross-section of a continuous layer; characterised by a layer with cavities or internal voids ; characterised by an apertured layer characterised by a layer comprising a deformed thin sheet, i.e. the layer having its entire thickness deformed out of the plane, e.g. corrugated, crumpled
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/022—Non-woven fabric
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B32B5/08—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer the fibres or filaments of a layer being of different substances, e.g. conjugate fibres, mixture of different fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/05—Interconnection of layers the layers not being connected over the whole surface, e.g. discontinuous connection or patterned connection
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/08—Interconnection of layers by mechanical means
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/10—Organic non-cellulose fibres
    • D21H13/12—Organic non-cellulose fibres from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H13/16—Polyalkenylalcohols; Polyalkenylethers; Polyalkenylesters
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H13/00—Pulp or paper, comprising synthetic cellulose or non-cellulose fibres or web-forming material
    • D21H13/36—Inorganic fibres or flakes
    • D21H13/38—Inorganic fibres or flakes siliceous
    • D21H13/40—Inorganic fibres or flakes siliceous vitreous, e.g. mineral wool, glass fibres
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/34—Ignifugeants
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H25/00—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00
    • D21H25/04—Physical treatment, e.g. heating, irradiating
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H27/00—Special paper not otherwise provided for, e.g. made by multi-step processes
    • D21H27/14—Paper having stable form or dimension; Curl-resistant paper
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/40—Symmetrical or sandwich layers, e.g. ABA, ABCBA, ABCCBA
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0223—Vinyl resin fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/02—Synthetic macromolecular fibres
    • B32B2262/0261—Polyamide fibres
    • B32B2262/0269—Aromatic polyamide fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/101—Glass fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/108—Rockwool fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/14—Mixture of at least two fibres made of different materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2605/00—Vehicles
    • B32B2605/18—Aircraft

Definitions

  • the invention relates to a paper, in particular for producing a honeycomb structure.
  • Honeycomb structures are used, inter alia, in lightweight construction, for example for structures of aircraft.
  • Conventional honeycomb structures are made of special papers, which may be provided on one or both sides with a cover layer.
  • honeycomb cores which are also referred to as honeycombs are offered for example by DuPont under the brand Nomex.
  • Such papers are made of meta-tag fibers which are fibrillated and at the same time serve as binders in the manufacture of the paper. Since such papers and honeycomb cores are relatively expensive, there is a need for a paper which is suitable for the production of a honeycomb structure and which can be produced cost-effectively.
  • the invention is therefore based on the object to provide a paper that is suitable for producing a honeycomb structure and inexpensive to produce.
  • thermoplastic fibers and mineral fibers which contain thermoplastic fibers and mineral fibers.
  • the paper according to the invention has the advantage that the components required for the production are available at low cost, so that it can be used as a replacement for the conventional high-priced paper.
  • the individual components namely the thermoplastic and the mineral fibers are heavy or non-flammable, so that the paper of the invention meets the requirements of fire protection.
  • the thermoplastic fibers comprise aramid jet spun fibrids and / or aramid staple fibers.
  • Aramid jet spun fibrids are commercially available under the name Twaron D8016.
  • Aramid staple fibers are commercially available under the name Twaron 1080.
  • the paper contains mineral rockwool fibers, for example of the type MS 675 Rockforce from Lapinus. These serve as a cost-effective and fire-retarding fiber component.
  • the mineral fibers comprise basalt fibers. These are, in particular, non-respirable basalt fibers. For example, it is short cut fibers with a length of 4 mm.
  • the paper according to the invention comprises organic binder fibers produced from polyvinyl alcohol (PVA).
  • PVA polyvinyl alcohol
  • it is polyvinyl alcohol short fibers with 4 mm length, in particular with the designation VPB 105-2.
  • a preferred variant of the paper according to the invention has the following composition: 30 to 50 percent by weight aramid-jet-spun fibrids, 6 to 10 percent by weight aramid staple fibers, 15 to 30 percent by weight mineral rock wool fibers, 20 to 40 percent by weight basalt fibers, 1 to 10 percent by weight Polyvinyl alcohol produced organic binder fibers, wherein the sum of all proportions is 100 percent by weight.
  • the paper produced in this way can be produced inexpensively, it is characterized by good mechanical properties and compliance with fire safety regulations.
  • a particularly preferred variant of the paper according to the invention has the following composition: 36 percent by weight aramid jet spun fibrids, 9 percent by weight aramid staple fibers, 20 percent by weight mineral rock wool fibers, 30 percent by weight basalt fibers and 5 percent by weight organic binder fibers made from polyvinyl alcohol.
  • the paper produced according to the invention may have a basis weight between 30 g / m 2 and 100 g / m 2 .
  • the basis weight is preferably 70 to 80 g / m 2 , particularly preferably 75 g / m 2 .
  • honeycomb structure which is made of a paper of the type described.
  • the honeycomb structure may include hexagonal honeycombs, also referred to as "honeycomb".
  • the honeycomb structure may comprise sinusoids.
  • Sinusoidal honeycombs are made from wavy (sinusoidal) bent strips of paper that are sandwiched between parallel strips of paper.
  • the hexagonal honeycombs and the sinusoids are preferably provided with an upper and a lower cover layer.
  • the cover layer may be made of a material other than paper, for example, the cover layer may be made of glass fiber reinforced plastic comprising epoxy resin as a matrix material.
  • honeycomb structure provides that the components made of paper are joined together by ultrasonic welding. Due to the advantageous mechanical properties of the paper according to the invention this can be thermally transformed at relatively low temperatures, for. B. on a corrugated system.
  • the paper according to the invention and the honeycomb structure made of the paper are characterized by a favorable fire behavior, in addition, the raw materials used for the paper are available at low cost.

Abstract

The invention relates to paper that can be used, in particular for producing a honeycomb structure. The paper contains thermoplastic fibers and mineral fibres, the thermoplastic fibres containing aramid-jet spun fibrids and/or aramid staple fibres and mineral rock wool fibers. The invention also relates to a honeycomb structure made from the paper.

Description

Diehl Aircabin GmbH, 88471 Laupheim  Diehl Aircabin GmbH, 88471 Laupheim
Papier sowie daraus hergestellte Wabenstruktur Paper and honeycomb made from it
Die Erfindung betrifft ein Papier, insbesondere zur Herstellung einer Wabenstruktur. The invention relates to a paper, in particular for producing a honeycomb structure.
Wabenstrukturen werden unter anderem im Leichtbau eingesetzt, beispielsweise für Strukturen von Luftfahrzeugen. Herkömmliche Wabenstrukturen werden aus speziellen Papieren hergestellt, die ein- oder beidseitig mit einer Deckschicht versehen sein können. Honeycomb structures are used, inter alia, in lightweight construction, for example for structures of aircraft. Conventional honeycomb structures are made of special papers, which may be provided on one or both sides with a cover layer.
Herkömmliche Wabenkerne, die auch als Honeycombs bezeichnet werden, werden beispielsweise von der Firma DuPont unter der Marke Nomex angeboten. Derartige Papiere bestehen aus Metaaramidfasern, die fibrilliert sind und gleichzeitig als Binder bei der Herstellung des Papiers dienen. Da derartige Papiere und Wabenkerne vergleichsweise teuer sind, besteht Bedarf an einem Papier, das sich für die Herstellung einer Wabenstruktur eignet und das kostengünstig herstellbar ist. Conventional honeycomb cores, which are also referred to as honeycombs are offered for example by DuPont under the brand Nomex. Such papers are made of meta-tag fibers which are fibrillated and at the same time serve as binders in the manufacture of the paper. Since such papers and honeycomb cores are relatively expensive, there is a need for a paper which is suitable for the production of a honeycomb structure and which can be produced cost-effectively.
Der Erfindung liegt daher die Aufgabe zugrunde, ein Papier anzugeben, das zur Herstellung einer Wabenstruktur geeignet und kostengünstig herstellbar ist. The invention is therefore based on the object to provide a paper that is suitable for producing a honeycomb structure and inexpensive to produce.
Zur Lösung dieser Aufgabe ist ein Papier vorgesehen, das thermoplastische Fasern und mineralische Fasern enthält. To solve this problem, a paper is provided which contains thermoplastic fibers and mineral fibers.
Das erfindungsgemäße Papier weist den Vorteil auf, dass die für die Herstellung benötigten Komponenten kostengünstig erhältlich sind, sodass es als Ersatz für das herkömmliche hochpreisige Papier eingesetzt werden kann. Die einzelnen Komponenten, nämlich die thermoplastischen und die mineralischen Fasern, sind schwer oder nicht entflammbar, sodass das erfindungsgemäße Papier die Anforderungen an den Brandschutz erfüllt. Bei dem erfindungsgemäßen Papier umfassen die thermoplastischen Fasern Aramid- Jet-Spun-Fibride und/oder Aramid-Stapelfasern. Aramid-Jet-Spun-Fibride sind unter der Bezeichnung Twaron D8016 kommerziell erhältlich. Aramid-Stapelfasern sind unter der Bezeichnung Twaron 1080 kommerziell erhältlich. The paper according to the invention has the advantage that the components required for the production are available at low cost, so that it can be used as a replacement for the conventional high-priced paper. The individual components, namely the thermoplastic and the mineral fibers are heavy or non-flammable, so that the paper of the invention meets the requirements of fire protection. In the paper of the invention, the thermoplastic fibers comprise aramid jet spun fibrids and / or aramid staple fibers. Aramid jet spun fibrids are commercially available under the name Twaron D8016. Aramid staple fibers are commercially available under the name Twaron 1080.
Erfindungsgemäß enthält das Papier mineralische Steinwollfasern, beispielsweise vom Typ MS 675 Rockforce von Lapinus. Diese dienen als kostengünstige und brandhemmende Faserkomponente. According to the invention, the paper contains mineral rockwool fibers, for example of the type MS 675 Rockforce from Lapinus. These serve as a cost-effective and fire-retarding fiber component.
Im Rahmen der Erfindung wird es bevorzugt, dass die mineralischen Fasern Basaltfasern umfassen. Es handelt sich dabei insbesondere um nicht lungengängige Basaltfasern. Beispielsweise handelt es sich um Kurzschnittfasern mit einer Länge von 4 mm. Within the scope of the invention it is preferred that the mineral fibers comprise basalt fibers. These are, in particular, non-respirable basalt fibers. For example, it is short cut fibers with a length of 4 mm.
Eine bevorzugte Weiterbildung der Erfindung sieht vor, dass das erfindungsgemäße Papier aus Polyvinylalkohol (PVA) hergestellte organische Bindefasern umfasst. Vorzugsweise handelt es sich um Polyvinylalkohol-Kurzfasern mit 4 mm Länge, insbesondere mit der Bezeichnung VPB 105-2. A preferred development of the invention provides that the paper according to the invention comprises organic binder fibers produced from polyvinyl alcohol (PVA). Preferably, it is polyvinyl alcohol short fibers with 4 mm length, in particular with the designation VPB 105-2.
Eine bevorzugte Variante des erfindungsgemäßen Papiers weist die folgende Zusammensetzung auf: 30 bis 50 Gewichtsprozent Aramid-Jet-Spun-Fibride, 6 bis 10 Gewichtsprozent Aramid-Stapelfasern, 15 bis 30 Gewichtsprozent mineralische Steinwollfasern, 20 bis 40 Gewichtsprozent Basaltfasern, 1 bis 10 Gewichtsprozent aus Polyvinylalkohol hergestellte organische Bindefasern, wobei die Summe aller Anteile 100 Gewichtsprozent beträgt. A preferred variant of the paper according to the invention has the following composition: 30 to 50 percent by weight aramid-jet-spun fibrids, 6 to 10 percent by weight aramid staple fibers, 15 to 30 percent by weight mineral rock wool fibers, 20 to 40 percent by weight basalt fibers, 1 to 10 percent by weight Polyvinyl alcohol produced organic binder fibers, wherein the sum of all proportions is 100 percent by weight.
Das auf diese Weise hergestellte Papier lässt sich kostengünstig herstellen, es zeichnet sich durch gute mechanische Eigenschaften und die Erfüllung der Brandschutzvorschriften aus. The paper produced in this way can be produced inexpensively, it is characterized by good mechanical properties and compliance with fire safety regulations.
Eine besonders bevorzugte Variante des erfindungsgemäßen Papiers weist die folgende Zusammensetzung auf: 36 Gewichtsprozent Aramid-Jet-Spun-Fibride, 9 Gewichtsprozent Aramid-Stapelfasern, 20 Gewichtsprozent mineralische Steinwollfasern, 30 Gewichtsprozent Basaltfasern und 5 Gewichtsprozent aus Polyvinylalkohol hergestellte organische Bindefasern. Das erfindungsgemäße hergestellte Papier kann ein Flächengewicht zwischen 30 g/m2 und 100 g/m2 aufweisen. Vorzugsweise beträgt das Flächengewicht 70 bis 80 g/m2, besonders bevorzugt 75 g/m2. A particularly preferred variant of the paper according to the invention has the following composition: 36 percent by weight aramid jet spun fibrids, 9 percent by weight aramid staple fibers, 20 percent by weight mineral rock wool fibers, 30 percent by weight basalt fibers and 5 percent by weight organic binder fibers made from polyvinyl alcohol. The paper produced according to the invention may have a basis weight between 30 g / m 2 and 100 g / m 2 . The basis weight is preferably 70 to 80 g / m 2 , particularly preferably 75 g / m 2 .
Daneben betrifft die Erfindung eine Wabenstruktur, die aus einem Papier der beschriebenen Art hergestellt ist. Die Wabenstruktur kann sechseckige Waben aufweisen, die auch als "Honeycomb" bezeichnet werden. Alternativ kann die Wabenstruktur Sinuswaben aufweisen. Sinuswaben werden aus wellenförmig (sinusförmig) gebogenen Papier- streifen hergestellt, die zwischen parallelen Papierstreifen aufgenommen sind. Die sechseckigen Waben und die Sinuswaben sind vorzugsweise mit einer oberen und einer unteren Deckschicht versehen. Die Deckschicht kann aus einem anderen Material als Papier hergestellt sein, beispielsweise kann die Deckschicht aus glasfaserverstärktem Kunststoff hergestellt sein, der Epoxidharz als Matrixwerkstoff umfasst. In addition, the invention relates to a honeycomb structure, which is made of a paper of the type described. The honeycomb structure may include hexagonal honeycombs, also referred to as "honeycomb". Alternatively, the honeycomb structure may comprise sinusoids. Sinusoidal honeycombs are made from wavy (sinusoidal) bent strips of paper that are sandwiched between parallel strips of paper. The hexagonal honeycombs and the sinusoids are preferably provided with an upper and a lower cover layer. The cover layer may be made of a material other than paper, for example, the cover layer may be made of glass fiber reinforced plastic comprising epoxy resin as a matrix material.
Eine Variante der Wabenstruktur sieht vor, dass die aus Papier hergestellten Komponenten durch Ultraschallschweißen miteinander verbunden werden. Aufgrund der vorteilhaften mechanischen Eigenschaften des erfindungsgemäßen Papiers kann dieses thermisch bei vergleichsweise niedrigen Temperaturen umgeformt werden, z. B. auf einer Riffelanlage. A variant of the honeycomb structure provides that the components made of paper are joined together by ultrasonic welding. Due to the advantageous mechanical properties of the paper according to the invention this can be thermally transformed at relatively low temperatures, for. B. on a corrugated system.
Das erfindungsgemäße Papier und die aus dem Papier hergestellte Wabenstruktur zeichnen sich durch ein günstiges Brandverhalten aus, zudem sind die für das Papier verwendeten Rohstoffe kostengünstig erhältlich. The paper according to the invention and the honeycomb structure made of the paper are characterized by a favorable fire behavior, in addition, the raw materials used for the paper are available at low cost.

Claims

PATENTANSPRÜCHE
1. Papier, insbesondere zur Herstellung einer Wabenstruktur, wobei das Papier thermoplastische Fasern und mineralische Fasern enthält, wobei die thermoplastischen Fasern Aramid-Jet-Spun-Fibride und/oder Aramid-Stapelfasern umfassen, dadurch gekennzeichnet, dass es mineralische Steinwollfasern enthält. Paper, in particular for producing a honeycomb structure, the paper comprising thermoplastic fibers and mineral fibers, the thermoplastic fibers comprising aramid-jet-spun fibrids and / or aramid staple fibers, characterized in that it contains mineral rockwool fibers.
2. Papier nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass die mineralischen Fasern Basaltfasern umfassen. 2. Paper according to one of the preceding claims, characterized in that the mineral fibers comprise basalt fibers.
3. Papier nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass es aus Polyvinylalkohol hergestellte organische Bindefasern umfasst. 3. Paper according to claim 1 or 2, characterized in that it comprises organic binder fibers produced from polyvinyl alcohol.
4. Papier nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass es die folgende Zusammensetzung aufweist: Paper according to any one of the preceding claims, characterized in that it has the following composition:
- 30 bis 50 Gewichtsprozent Aramid-Jet-Spun-Fibride,  30 to 50 weight percent aramid jet spun fibrids,
- 6 bis 10 Gewichtsprozent Aramid-Stapelfasern,  From 6 to 10% by weight of aramid staple fibers,
- 15 bis 30 Gewichtsprozent mineralische Steinwollfasern,  15 to 30% by weight of mineral rockwool fibers,
- 20 bis 40 Gewichtsprozent Basaltfasern,  20 to 40% by weight basalt fibers,
- 1 bis 10 Gewichtsprozent aus Polyvinylalkohol hergestellte organische Bindefasern, wobei die Summe aller Anteile 100 Gewichtsprozent beträgt.  - 1 to 10 weight percent of organic binder fibers produced from polyvinyl alcohol, wherein the sum of all proportions is 100 percent by weight.
5. Papier nach Anspruch 4, dadurch gekennzeichnet, dass es die folgende Zusammensetzung aufweist: Paper according to claim 4, characterized in that it has the following composition:
- 36 Gewichtsprozent Aramid-Jet-Spun-Fibride,  36% by weight aramid jet spun fibrids,
- 9 Gewichtsprozent Aramid-Stapelfasern,  9% by weight of aramid staple fibers,
- 20 Gewichtsprozent mineralische Steinwollfasern,  - 20% by weight mineral rockwool fibers,
- 30 Gewichtsprozent Basaltfasern,  30 weight percent basalt fibers,
- 5 Gewichtsprozent aus Polyvinylalkohol hergestellte organische Bindefasern. 5 percent by weight of organic binder fibers made from polyvinyl alcohol.
6. Papier nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, dass das Flächengewicht 30 bis 100 g/m2, vorzugsweise 70 bis 80 g/m2, besonders bevorzugt 75 g/m2, beträgt. 6. Paper according to one of the preceding claims, characterized in that the basis weight is 30 to 100 g / m 2 , preferably 70 to 80 g / m 2 , particularly preferably 75 g / m 2 .
7. Wabenstruktur, dadurch gekennzeichnet, dass sie aus einem Papier nach einem der Ansprüche 1 bis 6 hergestellt ist. 7. honeycomb structure, characterized in that it is made of a paper according to one of claims 1 to 6.
8. Wabenstruktur nach Anspruch 7, dadurch gekennzeichnet, dass sie sechseckige Waben oder Sinuswaben aufweist, wobei die Wabenstruktur vorzugsweise Deckschichten aufweist. 8. honeycomb structure according to claim 7, characterized in that it comprises hexagonal honeycombs or sine honeycombs, wherein the honeycomb structure preferably comprises cover layers.
9. Wabenstruktur nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass das die Waben bildende Papier durch Ultraschallschweißen miteinander verbunden ist. 9. honeycomb structure according to claim 7 or 8, characterized in that the honeycomb-forming paper is joined together by ultrasonic welding.
PCT/EP2018/000160 2017-04-12 2018-04-04 Paper and thus produced honeycomb structure WO2018188778A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201880019248.9A CN110475930A (en) 2017-04-12 2018-04-04 Paper and honeycomb prepared therefrom
EP18718390.0A EP3596268A1 (en) 2017-04-12 2018-04-04 Paper and thus produced honeycomb structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017003559.8 2017-04-12
DE102017003559.8A DE102017003559A1 (en) 2017-04-12 2017-04-12 Paper and honeycomb made from it

Publications (1)

Publication Number Publication Date
WO2018188778A1 true WO2018188778A1 (en) 2018-10-18

Family

ID=62002622

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/000160 WO2018188778A1 (en) 2017-04-12 2018-04-04 Paper and thus produced honeycomb structure

Country Status (4)

Country Link
EP (1) EP3596268A1 (en)
CN (1) CN110475930A (en)
DE (1) DE102017003559A1 (en)
WO (1) WO2018188778A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020119852A1 (en) * 2018-12-11 2020-06-18 Schaeffler Technologies AG & Co. KG Thermal insulating paper and method for producing a thermal insulating paper

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140113104A1 (en) * 2012-02-23 2014-04-24 E I Du Pont De Nemours And Company Fiber-resin composite sheet and article comprising the same
WO2016190163A1 (en) * 2015-05-28 2016-12-01 デュポン帝人アドバンスドペーパー株式会社 Aramid paper sheet and method for producing same
WO2016196472A1 (en) * 2015-05-29 2016-12-08 Sabic Global Technologies B.V. Honeycomb paper

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100485123C (en) * 2006-11-07 2009-05-06 成都龙邦新材料有限公司 Synthetic fiber paper containing basalt fiber and chemical fiber and its preparation method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20140113104A1 (en) * 2012-02-23 2014-04-24 E I Du Pont De Nemours And Company Fiber-resin composite sheet and article comprising the same
WO2016190163A1 (en) * 2015-05-28 2016-12-01 デュポン帝人アドバンスドペーパー株式会社 Aramid paper sheet and method for producing same
WO2016196472A1 (en) * 2015-05-29 2016-12-08 Sabic Global Technologies B.V. Honeycomb paper

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020119852A1 (en) * 2018-12-11 2020-06-18 Schaeffler Technologies AG & Co. KG Thermal insulating paper and method for producing a thermal insulating paper
CN112969829A (en) * 2018-12-11 2021-06-15 舍弗勒技术股份两合公司 Thermal insulation paper and method for producing thermal insulation paper
US20220025581A1 (en) * 2018-12-11 2022-01-27 Schaeffler Technologies AG & Co. KG Thermal insulating paper and method for producing a thermal insulating paper

Also Published As

Publication number Publication date
CN110475930A (en) 2019-11-19
EP3596268A1 (en) 2020-01-22
DE102017003559A1 (en) 2018-10-18

Similar Documents

Publication Publication Date Title
DE60122228T2 (en) Burn-resistant, non-woven mat, barrier and insulation system
DE4420613C1 (en) Burn-through barrier for aircraft fuselages
EP1680561B1 (en) Insulating element consisting of mineral fibres for the construction of ships
EP0229977B1 (en) Sound-reducing cladding for the engine compartment of a motor vehicle
EP1427898B1 (en) Building element
EP0579000B1 (en) Lightweight building elements for floor panels
WO2018188778A1 (en) Paper and thus produced honeycomb structure
DE202018106673U1 (en) Fire resistant multilayer panel
DE102010009351A1 (en) Fireproof material for vehicle seats
EP2860323B1 (en) Building element
WO2007110223A1 (en) Sandwich plate composite
EP0046460B1 (en) Heavily in flammable decorative laminated plate
DE202007018668U1 (en) Cover layer for insulation boards, roof underlays or the like.
EP0353397B1 (en) Translucent construction element for a rigid roofing
DE102007037137B4 (en) Ventilation or duct
CH584108A5 (en) Panel for air conditioning plant housing - has core with inflammable fibres at right angles to outer layers
DE202020106425U1 (en) Flameproof plate
DE69632048T2 (en) INSULATION ELEMENT RESISTANT TO HIGH TEMPERATURES
DE202005007653U1 (en) Thermal insulation panel for e.g. truck engine bay, turbocharger sidewalls, exhaust systems etc. is bonded by high-temperature adhesive to stainless steel substrate
DE202020103298U1 (en) Heat-insulating core for multi-layer board
EP0849480A2 (en) Hollow shaft for the drive train of a ship
DE202016100885U1 (en) Element with improved fire behavior, air duct comprising this element
DE102008033559A1 (en) Component e.g. door panel, has upper and lower covering layers made of glass-fiber reinforced plastic or plastic reinforced fibers e.g. carbon fibers, and middle layer consisting of honeycomb construction
GB2185438A (en) Liner material
DE202016009083U1 (en) Composite material for producing an insulating material for thermal and/or acoustic insulation

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 18718390

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2018718390

Country of ref document: EP

Effective date: 20191016