ES2544006B2 - Laminated products based on zinc and their use - Google Patents
Laminated products based on zinc and their use Download PDFInfo
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- ES2544006B2 ES2544006B2 ES201530427A ES201530427A ES2544006B2 ES 2544006 B2 ES2544006 B2 ES 2544006B2 ES 201530427 A ES201530427 A ES 201530427A ES 201530427 A ES201530427 A ES 201530427A ES 2544006 B2 ES2544006 B2 ES 2544006B2
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- zinc
- face
- passive
- coating
- laminated product
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D1/00—Roof covering by making use of tiles, slates, shingles, or other small roofing elements
- E04D1/28—Roofing elements comprising two or more layers, e.g. for insulation
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
- C23C2/04—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
- C23C2/06—Zinc or cadmium or alloys based thereon
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/02—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant
- E04D3/16—Roof covering by making use of flat or curved slabs or stiff sheets of plane slabs, slates, or sheets, or in which the cross-section is unimportant of metal
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
- E04D3/00—Roof covering by making use of flat or curved slabs or stiff sheets
- E04D3/24—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like
- E04D3/30—Roof covering by making use of flat or curved slabs or stiff sheets with special cross-section, e.g. with corrugations on both sides, with ribs, flanges, or the like of metal
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Laminated Bodies (AREA)
- Chemical Treatment Of Metals (AREA)
- Other Surface Treatments For Metallic Materials (AREA)
Abstract
Productos laminados basados en zinc y utilización de los mismos.#La invención se refiere a un producto laminado de zinc o de una aleación de zinc que incluye un revestimiento protector anticorrosión en una de sus caras o cara activa y que comprende una capa de fosfato de zinc en al menos la cara opuesta o cara pasiva, caracterizado porque en dicha cara opuesta o cara pasiva incluye un revestimiento polimérico funcional cargado con partículas inorgánicas de sílice y/o de cromato de estroncio.Laminated products based on zinc and use thereof. # The invention relates to a laminated product of zinc or a zinc alloy that includes a protective anti-corrosion coating on one of its faces or active face and comprising a phosphate layer of zinc on at least the opposite face or passive face, characterized in that on said opposite face or passive face includes a functional polymeric coating loaded with inorganic particles of silica and / or strontium chromate.
Description
PRODUCTOS LAMINADOS BASADOS EN ZINC Y UTILIZACiÓN DE LOS MISMOS LAMINATED PRODUCTS BASED ON ZINC AND USING THEMSELVES
CAMPO Y ANTECEDENTES DE LA INVENCiÓN FIELD AND BACKGROUND OF THE INVENTION
La presente invención se refiere a productos laminados basados en zinc, tales como aleaciones de zinc-cobre-titanio de alta resistencia a la corrosión y al deterioro mecánico, así como a su utilización, en particular en la industria de la construcción, reparación y/o renovación de tejados y cubiertas. The present invention relates to zinc-based laminated products, such as zinc-copper-titanium alloys of high resistance to corrosion and mechanical deterioration, as well as their use, in particular in the construction, repair and / or industry or roof and roof renovation.
En la industria de la construcción son ya conocidos productos laminados de zinc yJo de aleaciones de zinc cuya aplicación permite conformar tejados y/o cubiertas, especialmente no ventilados, donde la cara activa anti-corrosión del producto laminado está esencialmente fijada sobre el soporte del tejado o cubierta. Para ello, estos productos laminados conocidos incluyen en su cara activa, aquella enfrentada directamente al soporte de tejado o cubierta, donde se condensa fácilmente el vapor de agua ambiental, un revestimiento orgánico estanco al vapor de agua. Posiblemente por razones de coste y fabricación, estos productos laminados convencionales habitualmente incorporan revestimientos de espesor determinado tan sólo en la citada cara activa, ya que, debido a la exposición a las condiciones ambientales, especialmente al agua y al dióxido de carbono, sobre la cara no revestida se forman de forma natural películas pasivas de carbonatos básicos de zinc poco solubles en agua que se adhieren a la superficie del zinc y que proporcionan protección a la superficie de zinc formando una pátina protectora. In the construction industry, zinc laminated products and zinc alloy alloys are already known, whose application allows roofs and / or roofs to be formed, especially non-ventilated, where the anti-corrosion active face of the laminated product is essentially fixed on the roof support or cover. To this end, these known laminated products include in their active face, that directly facing the roof or roof support, where the ambient water vapor is condensed easily, an organic water-tight organic coating. Possibly for reasons of cost and manufacturing, these conventional laminated products usually incorporate coatings of determined thickness only on said active face, since, due to exposure to environmental conditions, especially water and carbon dioxide, on the face Uncoated passive films of low water soluble zinc carbonates naturally form that adhere to the zinc surface and provide protection to the zinc surface forming a protective patina.
Por ejemplo en el documento ES2133178 T3 (publicación de la patente europea EP95942113.2) se da a conocer un producto laminado de este tipo. En dicho documento '178 se describe el uso para producir tejados de chapas de zinc o de acero galvanizado, una de cuyas caras está provista de un revestimiento orgánico que tiene un espesor de 50 a 150 micrómetros, es elástico, duradero y estanco al vapor de agua, no estando revestida la otra cara o estando revestida por cualquier proceso de tratamiento de superficies aplicado para fines puramente estéticos. For example, ES2133178 T3 (European Patent Publication EP95942113.2) discloses such a laminated product. In said document '178 the use for producing roofs of zinc or galvanized steel sheets is described, one of whose faces is provided with an organic coating having a thickness of 50 to 150 micrometers, is elastic, durable and vapor tight water, the other side not being coated or being coated by any surface treatment process applied for purely aesthetic purposes.
Estos productos conocidos, aunque eficientes a la hora de proporcionar una protección anticorrosión natural en atmósferas limpias, no son sin embargo eficaces bajo ciertas condiciones ambientales, en particular en atmósferas contaminadas con óxidos de azufre o Hel, lluvias ácidas, etc., donde el pH del agua disminuye, por ejemplo en entornos industriales. Esta disminución del pH impide que se formen las sales básicas de zinc, sustituyéndose éstas por sulfatos y cloruros solubles en agua que pueden ser lavados por la lluvia y no podrán otorgar protección alguna (Revista de Metalurgia, 43 (2), marzo-abril, 133145, 2007, J.G. Castaño y coL, "Corrosión atmosférica del zinc en ambientes exteriores e interiores"). These known products, although efficient in providing natural anti-corrosion protection in clean atmospheres, are not however effective under certain environmental conditions, in particular in atmospheres contaminated with sulfur oxides or Hel, acid rains, etc., where the pH of water decreases, for example in industrial environments. This decrease in pH prevents basic zinc salts from forming, replacing them with water-soluble sulfates and chlorides that can be washed by rain and cannot grant any protection (Revista de Metallurgia, 43 (2), March-April, 133145, 2007, JG Castaño et al, "Atmospheric corrosion of zinc in outdoor and indoor environments").
Por tanto, en estos ambientes ácidos o en aquellos entornos donde los productos laminados puedan ser susceptibles de deteriorarse mecánicamente además de químicamente, por ejemplo por impactos, meteoros o por rayado durante el proceso de producción o colocación , sería deseable disponer de productos laminados que no sólo proporcionen una protección anticorrosión en su cara activa, sino que también incluyeran en su cara no activa Therefore, in these acidic environments or in those environments where the laminated products may be susceptible to mechanical deterioration in addition to chemically, for example by impacts, meteors or scratching during the production or placement process, it would be desirable to have laminated products that do not only provide anti-corrosion protection on your active face, but also include on your non-active face
o pasiva un revestimiento funcional para dotar a la superficie expuesta de mejores propiedades mecánicas de resistencia frente al impacto, al rayado o al deterioro químico. or passive a functional coating to provide the exposed surface with better mechanical properties of resistance against impact, scratch or chemical deterioration.
Así, un objeto de la presente invención es proporcionar un producto laminado de zinc o de una aleación de zinc, tal como una aleación de zinc-cobre-titanio, que, además de una alta resistencia a la corrosión, presente una alta resistencia mecánica al rayado, al impacto o al deterioro químico en su cara no revestida con un compuesto orgánico resistente a la corrosión, en lo que sigue denominada cara pasiva. Es igualmente objeto de la invención el uso de tal producto laminado para la construcción, reparación y/o renovación de tejados y cubiertas. Thus, an object of the present invention is to provide a zinc or zinc alloy laminated product, such as a zinc-copper-titanium alloy, which, in addition to a high corrosion resistance, has a high mechanical resistance to scratched, upon impact or chemical deterioration on its face not coated with an organic compound resistant to corrosion, in what is still called passive face. It is also the object of the invention to use such laminated product for the construction, repair and / or renovation of roofs and roofs.
BREVE DESCRIPCiÓN DE LAS FIGURAS BRIEF DESCRIPTION OF THE FIGURES
En las figuras adjuntas se muestran las propiedades anti-corrosión y de resistencia mecánica al rayado del producto laminado de la invención: The enclosed figures show the anti-corrosion and scratch resistance properties of the laminated product of the invention:
Fig.1: a) Resultado de un ensayo de rayado con instrumento punzante. b) Resultado del perfilado de bandejas de junta alzada. Fig. 1: a) Result of a scratch test with a sharp instrument. b) Result of profiling of raised joint trays.
Fig.2: Resultado de un ensayo de resistencia a la corrosión en medio salino. Fig. 2: Result of a corrosion resistance test in saline medium.
DESCRIPCiÓN DE LA INVENCION DESCRIPTION OF THE INVENTION
La invención proporciona un producto laminado que incluye convencionalmente un revestimiento protector anticorrosión en su cara activa y que comprende una capa de fosfato de zinc en al menos una de sus caras, por ejemplo un revestimiento tal como el descrito en el ejemplo 2 del documento ES213178 T3, y en la cara opuesta o cara pasiva incluye un revestimiento polimérico cargado con partículas inorgánicas de sílice y/o de cromato de estroncio. The invention provides a laminated product that conventionally includes an anti-corrosion protective coating on its active face and comprising a layer of zinc phosphate on at least one of its faces, for example a coating such as that described in example 2 of ES213178 T3 , and on the opposite side or passive face includes a polymeric coating loaded with inorganic particles of silica and / or strontium chromate.
Esta inclusión de partículas inorgánicas de sílice y/o de cromato de estroncio en el revestimiento funcional de la cara pasiva permite que el revestimiento actúe protegiendo la superficie del producto de laminado de zinc mediante un efecto barrera que impide la entrada de oxígeno, agua e iones a la superficie del metal, resultando eficaz debido a su impermeabilidad frente a estos agentes corrosivos, así como con un efecto inhibidor de la corrosión, proporcionando a la vez una alta resistencia mecánica a la superficie metálica pasiva, de forma que no se producen defectos superficiales no deseados, por ejemplo impactos o rayaduras, debidos a su manipulación o a las condiciones ambientales, disminuyendo igualmente la rugosidad superficial y aumentando la dureza. This inclusion of inorganic particles of silica and / or strontium chromate in the functional coating of the passive face allows the coating to act by protecting the surface of the zinc laminate product through a barrier effect that prevents the entry of oxygen, water and ions to the metal surface, being effective due to its impermeability against these corrosive agents, as well as with a corrosion inhibitory effect, while providing high mechanical resistance to the passive metal surface, so that no surface defects occur unwanted, for example impacts or scratches, due to handling or environmental conditions, also reducing surface roughness and increasing hardness.
En una realización de la invención, la carga de dióxido de silicio ylo de cromato de estroncio constituye entre un 1,0 Y un 15,0% en peso con respecto al peso del revestimiento polimérico. In one embodiment of the invention, the charge of silicon dioxide and strontium chromate constitutes between 1.0 and 15.0% by weight with respect to the weight of the polymeric coating.
En otra realización, el revestimiento polimérico de la invención se aplica sobre la capa pasiva del producto laminado de zinc con un espesor de capa de entre 2,5 g/m2 y 40 g/m 2• In another embodiment, the polymeric coating of the invention is applied on the passive layer of the zinc laminated product with a layer thickness between 2.5 g / m2 and 40 g / m 2 •
En otra realización, el revestimiento polimérico se aplica sobre la capa pasiva del producto laminado mediante un procedimiento de roll-coating . In another embodiment, the polymeric coating is applied on the passive layer of the laminated product by a roll-coating process.
Se realizaron ensayos para comprobar las propiedades de resistencia al rayado y de mejora de las características anti-corrosión del revestimiento polimérico aplicado de la invención sobre la capa pasiva de una lámina de zinc, donde la capa pasiva es, tal como se ha definido anteriormente, aquella no revestida con un revestimiento orgánico anti-corrosión. Tests were carried out to check the scratch resistance properties and improvement of the anti-corrosion characteristics of the applied polymeric coating of the invention on the passive layer of a zinc sheet, where the passive layer is, as defined above, that not coated with an organic anti-corrosion coating.
Para ellos, sobre la capa pasiva de una lámina de zinc que previamente se había tratado con fosfato de zinc, se aplicó mediante un roll-coater una capa de revestimiento polimérico incluyendo partículas de sílice y/o de cromato de estroncio con diferentes espesores de capa y se analizó en primer lugar la resistencia al rayado de esta lámina, comparándose con una lámina de control a la que sólo se había aplicado el tratamiento con fosfato de zinc sobre la cara pasiva. For them, on the passive layer of a zinc sheet that had previously been treated with zinc phosphate, a polymeric coating layer including silica and / or strontium chromate particles with different layer thicknesses was applied by roll-coater and the scratch resistance of this sheet was first analyzed, compared with a control sheet to which only zinc phosphate treatment had been applied on the passive face.
Los ensayos de resistencia al rayado se llevaron a cabo bajo condiciones de laboratorio mediante un aparato Serateh tester de Sheen Instruments. Los resultados de este ensayo se resumen en la tabla 1 siguiente: Scratch resistance tests were carried out under laboratory conditions using a Serateh tester from Sheen Instruments. The results of this test are summarized in the following table 1:
Tabla 1 -Ensayo de resistencia al rayado Table 1 - Scratch resistance test
- Muestra Sample
- Peso (g) Resultado Weight (g) Outcome
- solo fosfatado just phosphated
- 200 Se observa un ligero rayado 200 A slight scratch is observed
- 300 300
- Rayaduras muy visibles Very visible scratches
- fosfatado + phosphating +
- 200 No se observa rayado 200 Not scratched
- revestimiento polimérico polymeric coating
- 300 No se observa rayado 300 Not scratched
- incluyendo partículas including particles
- 400 No se observa rayado 400 Not scratched
- 500 500
- No se observa rayado Not scratched
- 700 700
- Se observa un ligero rayado A slight scratch is observed
Se realizaron igualmente ensayos en taller para evaluar la resistencia al rayado de placas 10 obtenidas de igual forma que en el ensayo anterior, esta vez sometiéndolas a los procesos habituales de manipulación, tales como perfilado, plegado, embutición. Workshop tests were also carried out to evaluate the scratch resistance of plates 10 obtained in the same way as in the previous test, this time subjecting them to the usual handling processes, such as profiling, folding, drawing.
En la fig . 1a se puede observar que las láminas revestidas en su cara pasiva con un revestimiento polimérico de partículas de sílice y/o cromatro de estroncio presentan una In fig. 1a it can be seen that the sheets coated on their passive face with a polymeric coating of silica particles and / or strontium chromatro have a
15 mayor resistencia al rayado que aquellas sólo tratadas con un fosfato de zinc. En la fig . 1b se muestra el resultado del perfilado de las láminas, observándose que en la lámina control (sólo fosfatada) aparecen marcas y arañazos en la zona donde los rodillos de conformación han perfilado la lámina, mientras que en la lámina de la invención no se observan tales defectos. 15 higher scratch resistance than those treated only with zinc phosphate. In fig. 1b shows the result of the profiling of the sheets, observing that in the control sheet (only phosphated) marks and scratches appear in the area where the forming rollers have profiled the sheet, while in the sheet of the invention no such are observed defects.
20 En segundo lugar, con el fin de comprobar la resistencia a la corrosión del producto laminado de la invención, se llevó a cabo un ensayo de niebla salina para comparar la resistencia a la corrosión de un producto laminado según la invención en comparación con un producto laminado comercial convencional y con un producto laminado tratado sólo con Second, in order to check the corrosion resistance of the laminated product of the invention, a salt spray test was carried out to compare the corrosion resistance of a laminated product according to the invention compared to a product. conventional commercial laminate and with a laminate product treated only with
25 fosfato de zinc. En la fig. 2 se muestran los resultados de este ensayo en función del tiempo de exposición a la niebla salin a. Como se puede observar en esta figura, el producto laminado de la invención no sólo presente mejores propiedades de resistencia mecánica, 25 zinc phosphate. In fig. 2 The results of this test are shown based on the exposure time to the salt spray a. As can be seen in this figure, the laminated product of the invention not only has better mechanical resistance properties,
sino también de resistencia a la corrosión que los productos laminados convencionales incluyendo sólo un tratamiento anti-corrosión en su cara activa. but also corrosion resistance than conventional laminated products including only an anti-corrosion treatment on its active face.
- ES 2 544 006 Al ES 2 544 006 Al
Claims (4)
- 1. one.
- Producto laminado de zinc o de una aleación de zinc que incluye un revestimiento Laminated product of zinc or a zinc alloy that includes a coating
- protector anticorrosión en una de sus caras o cara activa y que comprende una capa corrosion protection on one of its faces or active face and comprising a layer
- de fosfato de zinc en al menos la cara opuesta o cara pasiva, caracterizado porque zinc phosphate on at least the opposite or passive face, characterized in that
- 5 5
- en dicha cara opuesta o cara pasiva incluye un revestimiento polimérico funcional on said opposite face or passive face includes a functional polymeric coating
- cargado con partículas inorgánicas de sílice y/o de cromato de estroncio. loaded with inorganic particles of silica and / or strontium chromate.
- 2. 2.
- Producto laminado de zinc o de una aleación de zinc según la reivindicación 1, Laminated product of zinc or zinc alloy according to claim 1,
- caracterizado porque characterized because
- la ca rga de dióxido de silicio y/o de cromato de estroncio the ca rga of silicon dioxide and / or strontium chromate
- 10 10
- constitu ye entre un 1,0 Y un 15,0% en peso con respecto al peso del revestimiento constitutes between 1.0 and a 15.0% by weight with respect to the weight of the coating
- polimérico funcional. functional polymeric.
- 3. 3.
- Producto laminado de zinc o de una aleación de zinc según la reivindicación 1, Laminated product of zinc or zinc alloy according to claim 1,
- caracterizado porque el revestimiento polimérico funcional se aplica sobre la capa characterized in that the functional polymeric coating is applied on the layer
- 15 fifteen
- pasiva del producto laminado de zinc con un espesor de capa de entre 2,5 g/m2 y 40 Passive zinc rolled product with a layer thickness between 2.5 g / m2 and 40
- g/m2 . g / m2
- 4. Four.
- Utilización del producto laminado según las reivindicaciones 1 a 3, para la Utilization of the product laminate according the claims one to 3, for the
- constru cción, reparación y/o renovación de tejados y cubiertas construction, repair and / or renovation of roofs and roofs
- 20 twenty
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201530427A ES2544006B2 (en) | 2015-03-31 | 2015-03-31 | Laminated products based on zinc and their use |
| PCT/ES2015/070720 WO2016156631A1 (en) | 2015-03-31 | 2015-10-02 | Zinc-based laminated products and use thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ES201530427A ES2544006B2 (en) | 2015-03-31 | 2015-03-31 | Laminated products based on zinc and their use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| ES2544006A1 ES2544006A1 (en) | 2015-08-26 |
| ES2544006B2 true ES2544006B2 (en) | 2016-01-12 |
Family
ID=53886743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES201530427A Expired - Fee Related ES2544006B2 (en) | 2015-03-31 | 2015-03-31 | Laminated products based on zinc and their use |
Country Status (2)
| Country | Link |
|---|---|
| ES (1) | ES2544006B2 (en) |
| WO (1) | WO2016156631A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20250346302A1 (en) * | 2024-05-09 | 2025-11-13 | Christian S. Lee | Hot dip galvanization of deck assembly components |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2755387B2 (en) * | 1988-04-12 | 1998-05-20 | 大洋製鋼株式会社 | Manufacturing method of hot-dip zinc-alloy-plated steel sheet for pre-coated steel sheet and pre-coated steel sheet |
| FR2728604A1 (en) * | 1994-12-23 | 1996-06-28 | Union Miniere France Sa | ZINC COVER FOR ROOF |
| CA2217847C (en) * | 1996-10-11 | 2002-04-09 | Keita Ono | Aqueous colored coating composition and method of pattern coating using the same |
-
2015
- 2015-03-31 ES ES201530427A patent/ES2544006B2/en not_active Expired - Fee Related
- 2015-10-02 WO PCT/ES2015/070720 patent/WO2016156631A1/en not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| ES2544006A1 (en) | 2015-08-26 |
| WO2016156631A1 (en) | 2016-10-06 |
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