DE1019241B - Process for producing a colourfast and bleeding-proof engobe on asbestos cement products, in particular asbestos cement panels - Google Patents
Process for producing a colourfast and bleeding-proof engobe on asbestos cement products, in particular asbestos cement panelsInfo
- Publication number
- DE1019241B DE1019241B DET12538A DET0012538A DE1019241B DE 1019241 B DE1019241 B DE 1019241B DE T12538 A DET12538 A DE T12538A DE T0012538 A DET0012538 A DE T0012538A DE 1019241 B DE1019241 B DE 1019241B
- Authority
- DE
- Germany
- Prior art keywords
- asbestos cement
- solution
- color
- salts
- capillaries
- 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.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims description 31
- 239000010425 asbestos Substances 0.000 title claims description 25
- 229910052895 riebeckite Inorganic materials 0.000 title claims description 25
- 238000000034 method Methods 0.000 title claims description 7
- 239000000463 material Substances 0.000 claims description 7
- OZAOTUWBEKTDTD-UHFFFAOYSA-N [Si](F)(F)(F)F.[Ca] Chemical compound [Si](F)(F)(F)F.[Ca] OZAOTUWBEKTDTD-UHFFFAOYSA-N 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical class F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- VQWFNAGFNGABOH-UHFFFAOYSA-K chromium(iii) hydroxide Chemical compound [OH-].[OH-].[OH-].[Cr+3] VQWFNAGFNGABOH-UHFFFAOYSA-K 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- 150000001844 chromium Chemical class 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 238000002425 crystallisation Methods 0.000 claims description 2
- 230000008025 crystallization Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 239000008187 granular material Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 230000002378 acidificating effect Effects 0.000 claims 1
- 239000000835 fiber Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000000047 product Substances 0.000 description 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- 229910052791 calcium Inorganic materials 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003973 paint Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- C04B41/50—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
- C04B41/5018—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 with fluorine compounds
-
- 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
- C04B41/60—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only artificial stone
- C04B41/61—Coating or impregnation
- C04B41/65—Coating or impregnation with inorganic materials
- C04B41/66—Fluorides, e.g. ocratation
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Aftertreatments Of Artificial And Natural Stones (AREA)
Description
Verfahren zum Erzeugen einer farbbeständigen und ausblühfesten Engobe auf Asbestzementprodukten, insbesondere Asbestzementplatten Es ist bekannt, daß Engoben auf Asbestzementprodukten nur beschränkt haltbar sind und daß trotz der Engoben häufig Ausblüherscheinungen auf der Oberfläche der Asbestzementplatten auftreten, welche die Asbestzementplatten unansehnlich machen.Process for producing a colourfast and bloom-resistant engobe on asbestos cement products, especially asbestos cement boards. It is known that Engobes on asbestos cement products have a limited shelf life and that despite the Engobes often show signs of efflorescence on the surface of the asbestos cement panels, which make the asbestos cement sheets unsightly.
Eine andere bekannte Maßnahme zum Erzielen einer Färbung von Asbestzementplatten besteht darin, dem Material, aus dem die Asbestzementplatten hergestellt werden, bei der Mischung Farbe zuzugeben. Dieses Verfahren hat jedoch den Nachteil, daß die Oberfläche der Asbestzementplatten nicht sehr intensiv gefärbt ist und daß unter besonders ungünstigen feuchten Witterungsverhältnissen sich Ausblüherscheinungen zeigen. Durch Zusatz von gewissen Farben zur Asbestzementmischung kann zudem die Festigkeit des Materials beeinträchtigt werden.Another known measure for achieving coloring of asbestos cement panels consists in the material from which the asbestos-cement panels are made, add color to the mixture. However, this method has the disadvantage that the surface of the asbestos cement panels is not very intensely colored and that under particularly unfavorable damp weather conditions show signs of blooming demonstrate. By adding certain colors to the asbestos cement mixture, the Strength of the material will be impaired.
Weiterhin ist bekannt, daß man die Oberfläche der Asbestzementplatten durch Auftragen einer Engobe oder Auftragen von Farben auf Mineral-, Emulsions-oder Kunstharzbasis behandeln kann.It is also known that the surface of the asbestos cement panels by applying an engobe or applying paints to mineral, emulsion or Resin base can handle.
Alle diese Verfahren haben sich hinsichtlich der Dauerbeständigkeit der gefärbten Plattenoberfläche nicht als befriedigend erwiesen. Auch verhüten sie nicht in jedem Falle das Ausblühen an der Oberfläche bzw. das Ausblühen oder Abblättern der Farbschicht.All of these processes have proven themselves in terms of durability the colored plate surface was not found to be satisfactory. They also prevent not in every case the blooming on the surface or the blooming or peeling off the paint layer.
Den vorgeschilderten Mängeln und Nachteilen der bisher bekannten Verfahren zur Erreichung einer farbbeständigen, ausblühfesten Oberfläche von farbigen Asbestzementprodukten, insbesondere Asbestzementplatten, abzuhelfen, hat die Erfindung sich zur Aufgabe gestellt.The deficiencies and disadvantages of the previously known methods to achieve a color-fast, bloom-proof surface of colored asbestos cement products, In particular, asbestos cement panels to remedy, the invention has the task posed.
Nach der Erfindung wird dies auf wirtschaftliche Weise dadurch erreicht, daß man die Oberfläche des Asbestzementproduktes mit einer Lösung von Metallsalzen. vorzugsweise Chromsalzen, und Salzen der Kieselfluorwasserstoffsäure behandelt, so daß infolge der Azidität dieser Lösung die Asbestzementoberfläche angeätzt wird, wobei Chromhydroxyd ausfällt und Calciumsiliciofluorid auskristallisiert. Durch diese chemischen Reaktionen wird eine intensive Anfärbung der gesamten behandelten Asbestzementoberfläche erzielt und zugleich eine farbige, wetterbeständige Deckschicht gebildet. Gleichzeitig dringt aber auch die Calciumsiliciofluoridlösung in die Kapillaren des zementgebundenen Materials ein und tritt in Reaktion mit dem freien Kalkhydrat unter Auskristallisation wass;erunlös,lichcr Verbindungen. Durch die Kristallsalze werden die Kapillaren des Asbestzementmaterials allmählich verschlossen, wodurch die Ausblühgefahr beseitigt ist.According to the invention, this is achieved in an economical manner by that the surface of the asbestos cement product with a solution of metal salts. preferably chromium salts, and salts of hydrofluoric acid treated, so that due to the acidity of this solution the asbestos cement surface is etched, chromium hydroxide precipitates and calcium silicon fluoride crystallizes out. By These chemical reactions will intensely stain the entire treated Asbestos cement surface achieved and at the same time a colored, weather-resistant top layer educated. At the same time, however, the calcium silicon fluoride solution also penetrates the capillaries of the cementitious material and reacts with the free hydrated lime with crystallization water; insoluble, light compounds. By the crystal salts the capillaries of the asbestos-cement material are gradually closed, whereby the risk of blooming has been eliminated.
Läßt man z. B. eine Lösung von Chromsesquichlorid Cr, C16 und Calciumsiliciofluorid Ca S.i F6 auf die Oberfläche von Asbestzementprodukten einwirken, so dringt die Lösung infolge ihrer Azidität bis zu einer gewissen Tiefe in die Asbestzementoberfläche ein. Durch die Alkalität des zementgebundenen Materials erfolgt ein Ausfällen von Chromhydroxyd Cr (OH), unter Bildung einer intensiven Anfärbung der gesamten Asbestzementoberfläche. Die Calciumsiliciofluoridlösung dringt in die Kapillaren des zementgebundenen Materials ein und verwandelt dort das freie Kalkhydrat in unlösliches, kristallines Calciumsiliciofluori.d, wodurch eine Schließung der Kapillaren erfolgt, so daß aus den tiefer liegenden Schichten der Asbestzementplatten das Austreten von Kalkhydrat vermieden und somit auch die Ausblühgefahr beseitigt wird. Das ausgefällte Chromhydroxyd bildet mit dem auskristallisierten Calciumsiliciofluo.rid und. den Kalk-und Silikatverbindungen der Asbestzementoberfläche eine relativ dicke, grüne, kristalline, wetterbeständige und wasserunlösliche Deckschicht.If you let z. B. a solution of chromium sesquichloride Cr, C16 and calcium silicon fluoride Ca S.i F6 act on the surface of asbestos cement products, so the penetrates Solution due to its acidity to a certain depth in the asbestos-cement surface a. Due to the alkalinity of the cement-bound material, precipitation of Chromium hydroxide Cr (OH), with the formation of an intensive coloration of the entire asbestos-cement surface. The calcium silicon fluoride solution penetrates the capillaries of the cementitious material and transforms the free hydrated lime into insoluble, crystalline Calcium Siliciofluori.d, whereby a closure of the capillaries takes place, so that from the deeper lying Layers of the asbestos cement panels avoided the escape of hydrated lime and thus the risk of blooming is also eliminated. The precipitated chromium hydroxide forms with the crystallized Calcium Siliciofluo.rid and. the lime and silicate compounds the asbestos cement surface has a relatively thick, green, crystalline, weather-resistant and water-insoluble top layer.
Diese Schicht hat die Fähigkeit, farbige Granulate und Faserstoffe sowie zugesetzte Farbpigmente einzuschließen und wetterbeständig zu binden, so daß jegliche Farbwirkung und Farbnuancierung erzielt werden kann.This layer has the ability to produce colored granules and fibrous materials as well as to include added color pigments and to bind weather-resistant, so that any color effect and color nuance can be achieved.
Claims (3)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET12538A DE1019241B (en) | 1956-08-08 | 1956-08-08 | Process for producing a colourfast and bleeding-proof engobe on asbestos cement products, in particular asbestos cement panels |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET12538A DE1019241B (en) | 1956-08-08 | 1956-08-08 | Process for producing a colourfast and bleeding-proof engobe on asbestos cement products, in particular asbestos cement panels |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1019241B true DE1019241B (en) | 1957-11-07 |
Family
ID=7547051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DET12538A Pending DE1019241B (en) | 1956-08-08 | 1956-08-08 | Process for producing a colourfast and bleeding-proof engobe on asbestos cement products, in particular asbestos cement panels |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1019241B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3230638A1 (en) * | 1982-08-18 | 1984-02-23 | Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim | Agent for preventing efflorescences on cement products |
-
1956
- 1956-08-08 DE DET12538A patent/DE1019241B/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3230638A1 (en) * | 1982-08-18 | 1984-02-23 | Chemische Fabrik Budenheim Rudolf A. Oetker, 6501 Budenheim | Agent for preventing efflorescences on cement products |
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