WO1990008034A1 - Textiles ayant une resistance amelioree a la corrosion - Google Patents

Textiles ayant une resistance amelioree a la corrosion Download PDF

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Publication number
WO1990008034A1
WO1990008034A1 PCT/US1990/000199 US9000199W WO9008034A1 WO 1990008034 A1 WO1990008034 A1 WO 1990008034A1 US 9000199 W US9000199 W US 9000199W WO 9008034 A1 WO9008034 A1 WO 9008034A1
Authority
WO
WIPO (PCT)
Prior art keywords
resistant
corrosion
textile
film
flexible
Prior art date
Application number
PCT/US1990/000199
Other languages
English (en)
Inventor
Stephen W. Tippett
Original Assignee
Tippett Stephen W
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 Tippett Stephen W filed Critical Tippett Stephen W
Publication of WO1990008034A1 publication Critical patent/WO1990008034A1/fr

Links

Classifications

    • 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
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06M—TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
    • D06M15/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment
    • D06M15/19—Treating fibres, threads, yarns, fabrics, or fibrous goods made from such materials, with macromolecular compounds; Such treatment combined with mechanical treatment with synthetic macromolecular compounds
    • D06M15/21—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06M15/244—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons
    • D06M15/256—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds of halogenated hydrocarbons containing fluorine
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
    • D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
    • D06N3/04—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • D06N3/047—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds with fluoropolymers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L27/00—Adjustable joints, Joints allowing movement
    • F16L27/10—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations
    • F16L27/107—Adjustable joints, Joints allowing movement comprising a flexible connection only, e.g. for damping vibrations the ends of the pipe being interconnected by a flexible sleeve
    • 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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/021—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
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • 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
    • B32B2307/31—Heat sealable
    • 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
    • B32B2307/50—Properties of the layers or laminate having particular mechanical properties
    • B32B2307/554—Wear resistance
    • 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
    • B32B2307/714—Inert, i.e. inert to chemical degradation, corrosion
    • 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
    • B32B2307/724—Permeability to gases, adsorption
    • B32B2307/7242—Non-permeable

Definitions

  • the present invention relates to new textile products having improved wear and corrosion resistance characteristics, and more particularly to textile products which are gas-tight, flexible and resistant to wear, abrasion and corrosion.
  • the textile products of the present invention have particular utility for use in expansion joints for wet and/or dry flue duct seal service, and will be described in connection with such utility, although other uses are contemplated. Since their introduction in the early sixties, the use of non-metallic expansion joints for connecting the ends of large conduits have continuously grown. Large conduits are used to carry the combustion discharge, for example, from a power plant, to apparatus designed to remove noxious vapors and solids prior to discharging the remainder to the atmosphere.
  • Expansion joints are subject to movement due to temperature variations and plant vibrations, and also are subject to high temperature exposure and exposure to highly corrosive materials.
  • DESCRIPTION OF THE PRIOR ART One type of prior art non- ⁇ xietallic expans ⁇ On j&'in for use in high temperature and corrosive environments typically comprises a layered product that consists of various plies of material which are laid one over the other and usually mechanically fastened together in the clamp or flange area of the joint. This type of construction allows each material layer to function independently of the others.
  • an expansion joint of this type is comprised of (1) one or more inner ply or plies capable of withstanding the high temperature (400°F+) of the flue gas; (2) one or more thermal insulating barrier plies to lower the temperature within the joint, and (3) one or more outer cover ply or plies.
  • the expansion joint also may incorporate a gas seal ply as the inner ply, outer ply, or as an intermediate ply depending upon application requirements or manufacturer's design.
  • Fluoropolymer coated flexible textile products such as polytetrafluoroethylene (PTFE) coated fiberglass or the like materials also are gaining increasing use in expansion joints due to their superior resistance to corrosion.
  • fluoropolymers have excellent electrical characteristics and physical properties, such as low coefficient of friction, low surface free energy and high degree of hydrophobi ⁇ ity, which further favors their use in expansion joints.
  • Fluoropolymers, and particularly perfluoropolymers such as polytetrafluoroethylene (PTFE) , fluoro (ethylene propylene) copolymer (FEP) , and ⁇ opolymers of tetrafluoroethylene and perfluoropropyl vinyl ether (PFA) are resistant to a wide variety of chemicals, even at elevated temperatures, making them widely useful in a variety of industrial applications.
  • PTFE polytetrafluoroethylene
  • FEP fluoro (ethylene propylene) copolymer
  • PFA perfluoropropyl vinyl ether
  • Fluoropolymers such as polytetrafluoroethylene, are also well known for their low co-efficient of friction and relatively low surface-free energy which contributes to release behavior- ile they -exhibit outstanding chemical and thermal resistance, they are relatively soft waxy materials with relatively fragile surfaces easily damaged mechanically by scratching or wearing when rubbed against other materials. Increasing proportions of harder polymer components in the matrix may lead to improved mechanical wear characteristics, but with attendant loss of elongation (embrittlement) . While such compositions may reasonably be employed on relatively rigid substrates, when coated directly onto flexible substrates, such as woven cloth, they may result in products which are most frequently too brittle to serve as flexible coatings for conduits and may even crack when folded upon themselves.
  • An object of the present invention is to provide a textile product which overcomes the aforesaid and other disadvantages of the prior art, and which is flexible, gas-tight, and possesses good environmental and surface wear resistance.
  • Another object of the invention is to provide a gas-tight, non-metallic expansion joint which exhibits outstanding corrosion and surface wear resistant characteristics, and low co-efficient of friction.
  • a laminated textile product comprising, in combination: (a) a load-bearing component consisting of a first flexible textile layer; (b) a mechanical barrier component comprising a second flexible textile layer; and (c) a chemically resistant, gas-tight film sandwiched between the load bearing component and the mechanical component, said chemically resistant, gas-tight film comprising a fluoropolymer-containing film.
  • Fig. 1 is a side elevational view, in cross section, of a laminated textile product made in accordance with the present invention
  • Fig. 2 is a vertical section of an expansion joint made using the laminated textile product in accordance with the present invention
  • Fig. 3 is a view in cross section showing details of a 1 joint in a laminated textile product made in accordance
  • textile shall include
  • Examples include, inter alia, glass, 1 fiberglass, ceramics, graphite (carbon), PBI 2 (polybenzimidazole) , PTFE, polyaramides such as Kevlar and 3 Nomex, polyolefins such as Tyvek, polyesters such as
  • the fabric material may also comprise a metal such as
  • substrate may comprise a yarn, filament, monofilament or
  • a textile product comprises a first, load
  • barrier textile layer 14 and a film layer 12 formed of a
  • the 36 layers may be impregnated, either initially or simultaneously with a chemically resistant material such as of the type making up the gas-tight film.
  • a chemically resistant material such as of the type making up the gas-tight film.
  • the textile may be treated with a 'bonding or coupling agent to enhance adhesion of the protective film to the textile, and/or a lubricant such as methylphenyl silicone oil, graphite, or other lubricating material which may be applied, for example, prior to, simultaneously with, or subsequent to the application of the bonding or coupling agent, to enhance flexibility of the textile.
  • load bearing substrate layer 10 and mechanical barrier layer 14 preferably will comprise fluoropolymer coated textile products, for example, PTFE coated fiberglass such as described in detail in U.S. Patent 4,654,235 which is incorporated herein by reference.
  • the corrosion-resistant, gas-tight protective film preferably comprises one or a mixture of polyfluoropolymer materials such as PTFE, PFA and FEP, and may be preformed, or formed in situ by a variety of coating techniques such as dip coating or other well-known techniques.
  • the textile product is formed as follows: load bearing substrate layer 10 and/or mechanical barrier layer 14 are impregnated or coated initially with a fluoropolymer such as PTFE, KALREZ (Dupont) , KEL-F (3M) or a blend thereof. Film layer 12 is then formed in situ such as by dip coating on one surface of load bearing substrate layer 10 and/or mechanical barrier layer 14, and substrate layer 10 and mechanical layer 14 are then laminated together with film layer 12 sandwiched therebetween, in a hot laminator. Alternatively, film layer 12 may be supplied as a separate pre-formed film which may be heat laminated between load bearing substrate layer 10 and mechanical barrier layer 14.
  • a fluoropolymer such as PTFE, KALREZ (Dupont) , KEL-F (3M) or a blend thereof.
  • Film layer 12 is then formed in situ such as by dip coating on one surface of load bearing substrate layer 10 and/or mechanical barrier layer 14, and substrate layer 10 and mechanical layer 14 are then laminated together with film layer 12 sandwiched therebetween
  • Load bearing substrate layer 10 and mechanical barrier layer 14 preferably but not necessarily comprise the same or similar substrate materials, and may be the same or different thicknesses, depending on the intended use.
  • substrate layer 10 and barrier layer 14 will be of a thickness of 5 to 60 mil.
  • Film layer 12 should have a thickness of at least about 2 mil, and typically will have a thickness of 3 to 20 mil, preferably 5 to 10 mil.
  • an expansion joint made using the laminated textile material of the present invention has two rectangular frames 16 of stock that are right angular in cross section with one wall of each frame bolted and sealed to the end flange of an appropriate one of the duct sections (not shown) that are to be interconnected by the joint.
  • the outer edges 20 of the laminated textile material are seated against the other walls of the frame 16 and anchored to and sealed thereagainst utilizing threaded studs 22 or the like extending through the outer edges 20 and a hold-down frame 24 to receive anchoring nuts 26.
  • the outer edges 20 may be otherwise secured to the frames or duct sections by any other means which results in an integral connection of the sections.
  • the outer edges 20 of the material extending beyond hold-down frame 24 are located exteriorly of the flow of flue gases -through the expansion joints and thus will not be exposed to the corrosive gases contained therein. However, as can be seen in particular in Fig. 3, in the splice overlap area 30, material edges 28 would be exposed.
  • the exposed edges 28 of the composite material are encapsulated within a corrosion resistant, gas-tight barrier film 32 such as PFA or the like which may be heat sealed to the edges 28 of the cut composite material.
  • a corrosion resistant, gas-tight barrier film 32 such as PFA or the like which may be heat sealed to the edges 28 of the cut composite material.
  • the textile fabrics support the fluoropolymer

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laminated Bodies (AREA)
  • Joints Allowing Movement (AREA)

Abstract

Un produit textile flexible résistant à la corrosion comprend, de manière combinée, des premier et second substrats textiles flexibles (10, 14) ayant une pellicule (12) résistante à la corrosion prise en sandwich entre les deux substrats. Dans un mode préférentiel de réalisation de l'invention, la pellicule résistante à la corrosion comprend une pellicule en fluoropolymère étanche aux gaz.
PCT/US1990/000199 1989-01-19 1990-01-17 Textiles ayant une resistance amelioree a la corrosion WO1990008034A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US30003589A 1989-01-19 1989-01-19
US300,035 1989-01-19

Publications (1)

Publication Number Publication Date
WO1990008034A1 true WO1990008034A1 (fr) 1990-07-26

Family

ID=23157412

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1990/000199 WO1990008034A1 (fr) 1989-01-19 1990-01-17 Textiles ayant une resistance amelioree a la corrosion

Country Status (2)

Country Link
AU (1) AU5049090A (fr)
WO (1) WO1990008034A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001019610A1 (fr) * 1999-09-15 2001-03-22 Textiles Coated Inc. Materiau pour joint de dilatation composite
CN100458259C (zh) * 2007-07-05 2009-02-04 滕州市绿原机械制造有限责任公司 高分子复合波纹膨胀节

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400852A (en) * 1971-06-18 1975-07-16 Pennwalt Corp Laminated vinylidene fluoride polymer containing constructions
US4250223A (en) * 1978-07-07 1981-02-10 Dearborn Rubber Company Belt type expansion joints
US4452848A (en) * 1983-08-29 1984-06-05 Geiger David H Composite roof membrane

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1400852A (en) * 1971-06-18 1975-07-16 Pennwalt Corp Laminated vinylidene fluoride polymer containing constructions
US4250223A (en) * 1978-07-07 1981-02-10 Dearborn Rubber Company Belt type expansion joints
US4452848A (en) * 1983-08-29 1984-06-05 Geiger David H Composite roof membrane

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001019610A1 (fr) * 1999-09-15 2001-03-22 Textiles Coated Inc. Materiau pour joint de dilatation composite
US6676797B2 (en) 1999-09-15 2004-01-13 Textiles Coated Inc. Composite expansion joint material
CN100458259C (zh) * 2007-07-05 2009-02-04 滕州市绿原机械制造有限责任公司 高分子复合波纹膨胀节

Also Published As

Publication number Publication date
AU5049090A (en) 1990-08-13

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