DE4125059A1 - Penetrative coating-impregnation of porous non-metallic substrates - by applying easily-evaporated liq., heating and then applying coating-impregnant during cooling, e.g. for restorative work - Google Patents

Penetrative coating-impregnation of porous non-metallic substrates - by applying easily-evaporated liq., heating and then applying coating-impregnant during cooling, e.g. for restorative work

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Publication number
DE4125059A1
DE4125059A1 DE19914125059 DE4125059A DE4125059A1 DE 4125059 A1 DE4125059 A1 DE 4125059A1 DE 19914125059 DE19914125059 DE 19914125059 DE 4125059 A DE4125059 A DE 4125059A DE 4125059 A1 DE4125059 A1 DE 4125059A1
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Germany
Prior art keywords
coating
heating
liq
applying
substrate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
DE19914125059
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German (de)
Inventor
Wolfgang Dipl Chem Dr Ortlepp
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Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19914125059 priority Critical patent/DE4125059A1/en
Publication of DE4125059A1 publication Critical patent/DE4125059A1/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/009—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone characterised by the material treated
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/4505—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements characterised by the method of application
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/50—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements with inorganic materials
    • C04B41/502—Water
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
    • C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
    • C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
    • 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
    • D06M7/00—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins
    • D06M7/005—Treating fibres, threads, yarns, fabrics, or fibrous goods made of other substances with subsequent freeing of the treated goods from the treating medium, e.g. swelling, e.g. polyolefins made of asbestos
    • 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
    • D21H25/18—After-treatment of paper not provided for in groups D21H17/00 - D21H23/00 of old paper as in books, documents, e.g. restoring
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G23/00—Working measures on existing buildings
    • E04G23/02—Repairing, e.g. filling cracks; Restoring; Altering; Enlarging

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Textile Engineering (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)

Abstract

Coating and/or impregnation of porous non-metallic substrate e.g. spray-asbestos or opt. bonded fibrous material is effected by, (i) impregnating into the substrate an easily evaporated liq. e.g. water and/or Et0H; (ii) heating to evaporate the liq.; and (iii) applying the coating or impregnant while the substrate is cooling. Heating in step (ii) is pref. by inductive-, radiant-, convection- and/or resistance-heating, with the liq. applied in step (i) pref. being electrically conductive. The material can contain at least 2 pts.wt. polymeric organic lacquer binder and/or at least 0.1 wt.% of a colourant which is heat-sensitive in the range 10-100 deg.C. as regards colour or colour-depth. USE/ADVANTAGE - The process can be used to apply e.g. silane- or silicone- contg. hydrophobes, water-glass or aq. lacquers to spray-asbestos, (synthetic) stone, cement, gypsum prods. pulp, paper etc., e.g. for restarative purposes. The high temp. of the substrate during cooling allowing increased pentetration of the coating or impregnant by otherwise conventional means.

Description

Die Erfindung betrifft ein Verfahren zur Beschichtung und/oder Imprägnierung eines porösen, nichtmetallischen Werkstoffes, ins­ besondere von Spritzasbest, bindemittelhaltigen oder -freien Vlies- und Faserstoffen, wie Pappe, Papier usw., mit einem bei der Ver­ arbeitungstemperatur flüssigen Imprägnierungs- oder Anstrichmit­ tel, beispielsweise mit Silane oder Silicone enthaltenden Hydro­ phobierungsmitteln, Wasserglas, Wasserlacken usw.The invention relates to a method for coating and / or Impregnation of a porous, non-metallic material, ins special of spray asbestos, non-woven and non-binding and Fibers such as cardboard, paper, etc. with a Ver working temperature liquid impregnation or paint with tel, for example with hydro containing silanes or silicones phobing agents, water glass, water-based paints, etc.

Das Verfahren ist für die Sanierung asbesthaltiger Bauteile, beson­ ders die Beschichtung von Spritzasbest, die Verfestigung von Natur- und Kunststein, aber auch die industrielle Beschichtung von Zement- und gipsgebundenen Baustoffen, Papier, Pappe, Vliesstoffen usw. geeignet, wobei die Penetration des Werkstoffes durch das Impräg­ nierungs- bzw. Beschichtungsmittel im Vergleich mit den bekann­ ten Verfahren verbessert wird.The method is particularly suitable for the renovation of components containing asbestos the coating of spray asbestos, the consolidation of natural and Artificial stone, but also the industrial coating of cement and gypsum-bound building materials, paper, cardboard, nonwovens, etc. suitable, the penetration of the material by the impregnation nating or coating agent in comparison with the known th method is improved.

Nach den bekannten Verfahren wird die Penetration eines porösen Werkstoffes in erster Linie durch entsprechende Viskositätsein­ stellung des Imprägnierungsmittels und darüber hinaus durch An­ wendung bestimmter physikalischer Prozesse, wie Ober- oder Unter­ druckbeaufschlagung oder Wärmebehandlung des Substrates, ver­ bessert. Ferner ist in der vorangemeldeten, noch nicht veröffent­ lichten DE-P 41 13 942 vorgeschlagen worden, elektropolare oder mit Elektrolytzusatz hergestellte Imprägnierungslösungen zu ver­ wenden und diese - nach dem Auftragen auf den Werkstoff - einem dort anliegenden elektrischen Gleichspannungsfeld auszusetzen, um die Penetrationsgeschwindigkeit und Tiefenwirkung solcher Mit­ tel zu verbessern.According to the known methods, the penetration of a porous Material primarily through appropriate viscosity Position of the impregnating agent and beyond by An use of certain physical processes, such as upper or lower pressurization or heat treatment of the substrate, ver improves. Furthermore, the previously announced is not yet published Lichten DE-P 41 13 942 have been proposed, electropolar or impregnation solutions made with electrolyte additive turn and - after application to the material - one to expose the applied DC voltage field there, to the penetration speed and depth effect of such Mit tel to improve.

Bei der Bearbeitung der Aufgabe, poröse nichtmetallische Werkstoffe so zu imprägnieren, daß eine gute Penetrations­ wirkung und -geschwindigkeit und zugleich Verfestigung des Substrates erzielt wird, hat sich nun überraschend gezeigt, daß die Aufgabe mittels bekannter und einfacher Vorrichtungen nach den Kennzeichen und Merkmalen der Patentansprüche mit gutem technischen und wirtschaftlichen Erfolg gelöst werden kann.When processing the task, porous non-metallic Impregnate materials so that good penetration effect and speed and at the same time solidification of the Substrate, has now surprisingly been shown that the task by means of known and simple devices according to the characteristics and features of the claims good technical and economic success can.

Für das Verfahren werden nachstehend - aus einer Vielzahl von Anwendungsfällen - Ausführungsbeispiele gegeben.For the procedure below - from a variety of Use cases - examples given.

Beispiel 1example 1

Die mit Spritzasbest verkleidete Oberfläche eines Stahl­ trägers wird mit einem Wasser/Ethanol-Gemisch (Mischungs­ verhältnis 1:4, Naßauftragsmenge ca. 250 g/qm) getränkt.The surface of a steel covered with spray asbestos carrier is mixed with a water / ethanol mixture (mixture ratio 1: 4, wet application quantity approx. 250 g / qm) soaked.

Nach einer Einwirkungsdauer von ca. 15 Minuten wird die Oberfläche mittels IR-Strahlers auf eine Oberflächentem­ peratur von 130°C - ca. 20 Minuten lang - erwärmt.After an exposure time of approx. 15 minutes, the Surface using an IR emitter on a surface surface temperature of 130 ° C - heated for about 20 minutes.

Nach dem Abkühlen der Oberfläche auf ca. 50°C wird eine nach DE-PS 38 29 328 hergestellte Asbestbeschichtungs­ masse, der wenigstens 2 Gewichtsteile Reinacrylat-Binde­ mittel hinzugesetzt sind, aufgetragen (Naßauftragsmenge ca. 150 g/qm). After the surface has cooled to approx. 50 ° C, a asbestos coating produced according to DE-PS 38 29 328 mass, the at least 2 parts by weight of pure acrylic bandage medium are added, applied (wet application quantity approx. 150 g / sqm).  

Beispiel 2Example 2

Eine Holzspanplatte (Dichte < 800 kg/m3) wird mit ca. 130 g/qm eines Wasser/Ethanol-Gemisches (1:20) getränkt.A chipboard (density <800 kg / m 3 ) is impregnated with approx. 130 g / m² of a water / ethanol mixture (1:20).

Nach einer Einwirkungsdauer von ca. 10 Minuten wird die Oberfläche mittels HF-Heizvorrichtung auf ca. 90°C Oberflächentemperatur über ca. 10 Minuten aufgeheizt.After an exposure time of approx. 10 minutes, the Surface by means of HF heating device to approx. 90 ° C Surface temperature heated up for approx. 10 minutes.

Nach dem Abkühlen der Oberfläche auf ca. 70°C wird eine Bitumen-Wasser-Emuision (Naßauftragsmenge 90 g/qm) auf­ getragen.After the surface has cooled to approx. 70 ° C a Bitumen-water emission (wet application quantity 90 g / qm) carried.

Beispiel 3Example 3

Eine aus Sandstein o. ähnlich porösem Naturstein herge­ stellte Skulptur wird in einem Wasser/Ethanol-Gemisch (3:2) im Tauchverfahren ca. 45 Minuten lang getränkt.One made of sandstone or similar porous natural stone posed sculpture is in a water / ethanol mixture (3: 2) soaked for about 45 minutes in the immersion process.

Die Skulptur wird dann in einem Ofen mit Umlufttrocknung auf eine Oberflächentemperatur von ca. 220°C erhitzt.The sculpture is then placed in an oven with forced air drying heated to a surface temperature of approx. 220 ° C.

Nach dem Abkühlen auf ca. 65°C wird die Skulptur in einem Tauchbad, bestehend aus einer Lösung von 5% Silanol in Wasser/Ethanol (70:30), über eine Dauer von ca. 10 Minuten getränkt. After cooling to approx. 65 ° C, the sculpture is in one Immersion bath consisting of a solution of 5% silanol in Water / ethanol (70:30) over a period of approximately 10 minutes soaked.  

Beispiel 4Example 4

Spritzasbest wird mit einem Wasser/Ethanol-Gemisch (9:1), dem 15 Gew.% Natriumsulfat hinzugesetzt sind, entsprechend Beispiel 1 getränkt.Spray asbestos is mixed with a water / ethanol mixture (9: 1), to which 15% by weight sodium sulfate are added, accordingly Example 1 soaked.

Auf die Oberfläche wird eine Flächenelektrode aus Edelstahl aufgelegt, die mit der Phase eines Wechselstromgenerators 380 V/100 A/50 Hz verbunden ist, dessen Nulleiter an einer in eine paßgerechte, ggf. an den Stahlträger anstoßende Boh­ rung im Substrat eingebrachten Stabelektrode anliegt.A surface electrode made of stainless steel is placed on the surface hung up with the phase of an alternator 380 V / 100 A / 50 Hz is connected, the neutral of which is connected to one in a fitting Boh, possibly abutting the steel beam stick electrode inserted in the substrate.

Mittels Stromreglers wird der Strom von ca. 10 A auf ca. 50 A so lange gesteigert, bis im Zuge der Erhitzung des Substrates die Verdampfung des Flüssigkeitsgemisches abgeschlossen ist und die Oberflächentemperatur ca. 125°C beträgt.The current is reduced from approx. 10 A to approx. 50 A by means of a current regulator increased until in the course of heating the substrate the evaporation of the liquid mixture is complete and the surface temperature is approximately 125 ° C.

Schließlich wird der Spritzasbest wie in Beispiel 1 impräg­ niert.Finally, the spray asbestos is impregnated as in Example 1 kidney.

Claims (4)

1. Verfahren zur Beschichtung und/oder Imprägnierung eines porösen, nichtmetallischen Werkstoffes, wie Spritzasbest und anderen, mit oder ohne Bindemittel hergestellten Fa­ ser- und Vliesstoffen, dadurch gekenn­ zeichnet, daß
der zu beschichtende Werkstoff zunächst mit einer leicht verdampfbaren Flüssigkeit, wie Wasser, Ethanol oder daraus hergestellten Gemischen, imprägniert,
die Flüssigkeit dann durch Erwärmen des Substrates verdampft und
schließlich während des Abkühlens des Werkstoffes das Beschichtungs- und/oder Imprägnierungsmittel auf das Substrat aufgetragen wird. 1. A method for coating and / or impregnation of a porous, non-metallic material, such as sprayed asbestos and other, with or without a binder produced Fa and nonwovens, characterized in that
the material to be coated is first impregnated with an easily evaporable liquid, such as water, ethanol or mixtures prepared therefrom,
the liquid is then evaporated by heating the substrate and
finally, the coating and / or impregnating agent is applied to the substrate while the material is cooling. 2. Verfahren nach Anspruch 1, dadurch gekenn­ zeichnet, daß die Erwärmung mittels induktiver Heizung, Strahlungs­ heizung, Konvektionsheizung, Widerstandsheizung oder einer Kombination daraus vorgenommen wird.2. The method according to claim 1, characterized records that heating by means of inductive heating, radiation heating, convection heating, resistance heating or a combination of these. 3. Verfahren nach den Ansprüchen 1 und 2, dadurch ge­ kennzeichnet, daß die verdampfbare Flüssigkeit elektrisch leitend ist oder die elektrische Leitfähigkeit erhöhende Bestand­ teile enthält.3. The method according to claims 1 and 2, characterized ge indicates that the vaporizable liquid is electrically conductive or inventory that increases electrical conductivity contains parts. 4. Verfahren nach den Ansprüchen 1 bis 3, dadurch ge­ kennzeichnet, daß dem Imprägnierungs- oder Beschichtungsmittel wenigstens 2 Gewichtsteile eines polymeren organischen Lackbinde­ mittels und/oder wenigstens 0,1 Gew.% eines im Tempe­ raturintervall von 10°C bis 100°C temperatursensi­ tiven Farbstoffes, mit temperaturabhängiger Färbung oder Farbtiefe, hinzugesetzt sind.4. The method according to claims 1 to 3, characterized ge indicates that the impregnating or coating agent at least 2 parts by weight of a polymeric organic paint bandage by means of and / or at least 0.1% by weight of a temp temperature interval from 10 ° C to 100 ° C temperature sens tive dye, with temperature-dependent coloring or color depth are added.
DE19914125059 1991-07-29 1991-07-29 Penetrative coating-impregnation of porous non-metallic substrates - by applying easily-evaporated liq., heating and then applying coating-impregnant during cooling, e.g. for restorative work Withdrawn DE4125059A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914125059 DE4125059A1 (en) 1991-07-29 1991-07-29 Penetrative coating-impregnation of porous non-metallic substrates - by applying easily-evaporated liq., heating and then applying coating-impregnant during cooling, e.g. for restorative work

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914125059 DE4125059A1 (en) 1991-07-29 1991-07-29 Penetrative coating-impregnation of porous non-metallic substrates - by applying easily-evaporated liq., heating and then applying coating-impregnant during cooling, e.g. for restorative work

Publications (1)

Publication Number Publication Date
DE4125059A1 true DE4125059A1 (en) 1993-02-04

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DE19914125059 Withdrawn DE4125059A1 (en) 1991-07-29 1991-07-29 Penetrative coating-impregnation of porous non-metallic substrates - by applying easily-evaporated liq., heating and then applying coating-impregnant during cooling, e.g. for restorative work

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008023093A1 (en) * 2006-08-24 2008-02-28 Stora Enso Oyj Method for coating a paper surface and a product thus obtained

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008023093A1 (en) * 2006-08-24 2008-02-28 Stora Enso Oyj Method for coating a paper surface and a product thus obtained

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