EP2728046B1 - Matériau composite pour la fabrication de systèmes d'étanchéité et procédé correspondant - Google Patents

Matériau composite pour la fabrication de systèmes d'étanchéité et procédé correspondant Download PDF

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Publication number
EP2728046B1
EP2728046B1 EP20120191325 EP12191325A EP2728046B1 EP 2728046 B1 EP2728046 B1 EP 2728046B1 EP 20120191325 EP20120191325 EP 20120191325 EP 12191325 A EP12191325 A EP 12191325A EP 2728046 B1 EP2728046 B1 EP 2728046B1
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EP
European Patent Office
Prior art keywords
biosoluble
composite material
ceramics
solution
weight
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.)
Not-in-force
Application number
EP20120191325
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German (de)
English (en)
Other versions
EP2728046A1 (fr
Inventor
Franco Rossi
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F M I SpA
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F M I SpA
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Priority to EP20120191325 priority Critical patent/EP2728046B1/fr
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Publication of EP2728046B1 publication Critical patent/EP2728046B1/fr
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Classifications

    • DTEXTILES; PAPER
    • D04BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04HMAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209Inorganic fibres

Definitions

  • the present invention relates to a composite material for making sealing systems and a method therefor.
  • biosoluble ceramics fibers which will be hereinbelow referred to as "A" composite are exclusively used.
  • B composites comprise: muscovite and phlogophite mica, bentonite, montmorilonite, laponite, hydrotalcite, kaolin, lamellar structure silicates, phyllosilicates, thermally, ultrasonically and/or chemically foamed phlogophite mica.
  • Said B composites may also be used in any combinations and rates.
  • the A composite may be used as a fibrous reinforcement agent for composite materials, owing to its good mechanical and chemical properties; however, in the sealing or gasket system field it cannot be used per se, because of its poor sealing capability.
  • the B composites may be used in the sealing system field, since they provide good sealing capabilities, but cannot be used per se, because of their poor mechanical characteristics.
  • the aim of the present invention is to provide a combined composite material the A composite of which is chemically bound to the B composite, through an organosilane based chemical process.
  • the end product appears as consisting of an uneven weave of biosoluble ceramics fibers operating as structural support for inorganic compounds having a layered lamellar structure.
  • the invention also relates to a method for making plates, films and sheets even coupled to other materials such as metal and non-metal fiber fabrics, smooth, perforated and/or diamond shaped metal laminates, which will be hereinbelow referred to as "supports".
  • the method according to the present invention comprises the following method steps:
  • the A composite is processed with vinyltriethoxysilane in an aqueous or organic solution and with a concentration from 0.1 to 30% by weight, in which vinyltriethoxysilane is present starting from a rate from 0.5% up to 30% by weight, based on the A composite.
  • the B composite is processed with bis(triethoxy-silylpropyl)polysulfide in an aqueous or organic solution at a concentration from 0.1 to 60% by weight, wherein said bis(triethoxysilylpropyl)polysulfide is present from a rate of 0.5% to 30% by weight based on the B composite.
  • the A and B composites, as pre-processed in said step 1) are mixed with a solution polymer based binding system such as: NBR, chloroprene, SBR, polyisoprene, polybutadiene, butyl, silicone, fluorurated and urethane rubbers.
  • a solution polymer based binding system such as: NBR, chloroprene, SBR, polyisoprene, polybutadiene, butyl, silicone, fluorurated and urethane rubbers.
  • the following solvents are herein used: toluene, xylene, dimethylketone methylethylketone, saturated C6-C10 linear and cyclic hydrocarbons.
  • the solutions contain the polymer in a rate up to 30% by weight.
  • the preferred mixing system comprises a "Z branch" or a planetary system.
  • the mixing time is preferably from 30 to 45 minutes, depending on the desired end viscosity.
  • the A composite may be introduced into the mixture in a rate up to 80% by weight.
  • the B composite may be introduced into the mixture in a rate up to 90% by weight.
  • the process aid is introduced into the mixture in a rate up to 7% by weight.
  • step 3) the mixture of step 2) may be processed through calendaring or spreading and optionally coupled to a support, if either plates or continuous films are to be achieved.
  • step 4 the half-finished articles of step 3) are subjected to a thermal cycle up to 250°C depending on the used process aid polymer and solvent, with a heating rate from 1°C/minute.
  • the invention has provided a method of making a composite material, particularly suitable for making sealing systems, comprising a combination of biosoluble ceramics fibers and mineral filers.
  • the method according to the present invention provides an end product consisting of an uneven weave of biosoluble ceramics fibers, operating as a structural support for inorganic composites having a lamellar layered structure.
  • the sealing system composite material according to the present invention comprises a biosoluble fiber matrix having a thermal resistance up to 1000°C, with lamellar layered structure inorganic composites having a particle size from 1 ⁇ m.
  • organosilanes in the subject method provides a mechanically continuous phase between the biosoluble fiber structure and the lamellar structure inorganic composites.
  • the method according to the present invention provides semifinished sheets, plates, films or sheet elements coupled to other materials such as metal and non-metal fiber fabrics, smooth, perforated and/or diamond shaped metal laminates and other articles.
  • the composite material made by the present invention may be used at high temperatures up to 1,000°C, even in the presence of strongly oxidizing agents.
  • inventive composite material may also be used for high temperature sealing systems.
  • inventive composite material may also be used as a protective film coated on surfaces of the sheet elements.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sealing Material Composition (AREA)

Claims (7)

  1. Procédé de fabrication d'un matériau composite pour des systèmes d'étanchéité, ledit matériau composite comprenant une matrice de fibres de céramique biosolubles fonctionnant comme un support structurel pour les composites inorganiques ayant une structure stratifiée lamellaire, ledit procédé comprenant les étapes de :
    prétraitement chimique de fibres de céramique biosolubles dans une solution aqueuse avec du vinyltriéthoxysilane et de charges minérales avec du polysulfure de bis(triéthoxysilylpropyle) ou inversement ;
    mélange lentement des fibres de céramique biosolubles et des charges minérales chimiquement prétraitées par une solution de matériau élastomère ;
    formation d'une plaque et/ou d'une structure lamellaire avec ledit support structurel ;
    durcissement thermique de ladite plaque et/ou de ladite structure stratifiée ; et
    revêtement à chaud, par calandrage à vide, sur une surface de ladite plaque et/ou de ladite structure stratifiée, d'un film protecteur antiadhésif ayant une épaisseur supérieure à 5 µm, basé sur une silice à température élevée et du PET.
  2. Procédé selon la revendication 1, caractérisé en ce que lesdites charges minérales comprennent un ou plusieurs éléments choisis parmi le mica, la muscovite et la phlogopite, la bentonite, la montmorilonite, la laponite, l'hydrotalcite, le kaolin, les silicates de structure lamellaire, les phyllosilicates et un mica phlogopite expansé thermiquement, par ultrasons et/ou chimiquement.
  3. Procédé selon la revendication 1, caractérisé en ce que ledit vinyltriéthoxysilane est sous la forme d'une solution aqueuse ou organique à une concentration de 0,1 à 30 % en poids, ledit vinyltriéthoxysilane étant appliqué en une quantité de 0,5 % à 30 % en poids par rapport aux fibres de céramique biosolubles, ledit polysulfure de bis(triéthoxysilylpropyle) étant sous la forme d'une solution aqueuse ou organique à une concentration de 0,1 à 60 % en poids, ledit polysulfure de bis(triéthoxysilylpropyle) étant appliqué en une quantité de 0,5 % à 30 % en poids par rapport auxdites charges minérales, ledit prétraitement étant réalisé de manière séparée dans un récipient de prétraitement fermé et sous agitation à une température de 25 °C à 80 °C pendant 24 heures.
  4. Procédé selon la revendication 1, caractérisé en ce que ladite solution de matériau élastomère est une solution d'un matériau polymère choisi parmi un ou plusieurs de NBR, chloroprène, SBR, polyisoprène, polybutadiène, butyle, silicone et caoutchoucs d'uréthane et fluorés.
  5. Procédé selon la revendication 1, caractérisé en ce que lesdits solvants du procédé choisis parmi le toluène, le xylène, la diméthylcétone, la méthyléthylcétone, les hydrocarbures en C6-C10 linéaires et cycliques saturés sont utilisés.
  6. Matériau composite pour la préparation de systèmes d'étanchéité par un procédé selon la revendication 1, caractérisé en ce que ladite matrice de fibres de céramique biosolubles se compose d'un arrangement tissé irrégulier de fibres biosolubles.
  7. Matériau composite selon la revendication 6, caractérisé en ce que ladite matrice de fibres de céramique biosolubles a une résistance thermique inférieure à 1 000 °C et lesdits composites inorganiques de la structure stratifiée lamellaire ont une granulométrie supérieure à 1 µm.
EP20120191325 2012-11-05 2012-11-05 Matériau composite pour la fabrication de systèmes d'étanchéité et procédé correspondant Not-in-force EP2728046B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20120191325 EP2728046B1 (fr) 2012-11-05 2012-11-05 Matériau composite pour la fabrication de systèmes d'étanchéité et procédé correspondant

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20120191325 EP2728046B1 (fr) 2012-11-05 2012-11-05 Matériau composite pour la fabrication de systèmes d'étanchéité et procédé correspondant

Publications (2)

Publication Number Publication Date
EP2728046A1 EP2728046A1 (fr) 2014-05-07
EP2728046B1 true EP2728046B1 (fr) 2015-02-25

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105885130A (zh) * 2015-01-13 2016-08-24 奉化联邦橡胶有限公司 一种耐低温、耐油橡胶密封复合材料及其制备方法
CN113171961B (zh) * 2021-04-25 2022-04-15 杭州萧山红垦保温防腐有限公司 一种岩棉毡及其生产工艺

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US5814271A (en) * 1996-09-03 1998-09-29 Dow Corning Corporation Process of producing fibers from curable alk-1-enyl ether functional siloxane resins
KR100773602B1 (ko) * 2001-12-29 2007-11-07 주식회사 케이씨씨 인공체액에 대한 용해도가 우수한 고온단열재용 생분해성세라믹 섬유조성물
KR101206365B1 (ko) * 2010-02-24 2012-11-29 주식회사 케이씨씨 세라믹 섬유 제조용 조성물 및 그로부터 제조된 고온단열재용 생체용해성 세라믹 섬유

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