Maddalen Puyadena

Selective anaphoretic e-coating of aluminium by brush plating and infrared curing: A comparative study of deposition and curing strategies

Amaya García-Casas, Maddalen Puyadena, Jaime Ochoa, Eva García‐Lecina et autres

The selective application of protective coatings on repaired aluminium components is a key requirement in the aerospace sector. In this work, the feasibility of applying an anaphoretic coating by Brush Plating was investigated and compared with the conventional immersion process. To enable …

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Development of flame-retardant waterborne alkyd resins for wood coating

Maddalen Puyadena, Idoia Etxeberria, Gurutze Ortega, Agurtzane Múgica et autres

Phosphorus-containing water-borne alkyd resins were developed as transparent flame-retardant wood coatings. The synthesis consisted of alcoholysis followed by esterification, incorporating the reactive flame-retardant polyethylene glycol phosphate ester (Exolit OP550). In addition, ammonium polyphosphate additives of different particle sizes (Exolit AP422 and Exolit …

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Development of Flame-Retardant waterborne alkyd resins for wood coating

Lourdes Irusta, Maddalen Puyadena, Idoia Etxeberria, Gurutze Ortega et autres

Selective Anaphoretic E-Coating of Aluminium by Brush Plating and Infrared Curing: A Comparative Study of Deposition and Curing Strategies

Amaya García-Casas, Maddalen Puyadena, Jaime Ochoa, Eva García-lecina et autres

mx (code pays fourni par la source)

Combining anodising and anaphoresis to enhance the chemical protection of Al alloys

Maria Belén García-Blanco, Maddalen Puyadena, Nícolas Pinheiro Ramos, Elixabete Espinosa et autres

Aluminum alloys are promising alternatives to stainless steel in industrial applications due to their superior thermal conductivity and low weight. However, their use in the Food and Beverage industry requires effective surface treatments to withstand aggressive cleaning agents. This study evaluates the …

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Combining Anodising and Anaphoresis to Enhance the Chemical Protection of Aa6082

Maria Belén García-Blanco, Maddalen Puyadena, Nícolas Pinheiro Ramos, Elixabete Espinosa et autres

mx, es (code pays fourni par la source)

Phosphorus-containing lignin intermediates as reactive bio-based flame-retardants for polyurethane and acrylic coatings for wood

Maddalen Puyadena, Petri Widsten, Tom Wirtanen, Miriam Kellock et autres

Wood has limited fire-retardant properties but this can be improved by using coatings with sustainable and cost-effective flame retardants. For this purpose, lignin is a potential candidate due to its highly aromatic structure and low cost. However, its structure should be modified …

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UV-curable acrylic end-capped amphoteric waterborne polyurethane coatings

Maddalen Puyadena, Erika Pajares, Loli Martin, Aitor Barrio et autres

Waterborne polyurethane dispersions (WPUs) are environmentally friendly coatings since they present low amount of volatile organic compound amounts (VOCs). In the majority of the WPUs the dispersions are balanced with anionic groups and accordingly their stability at low pH is limited. In …

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Polyurethane/acrylic coatings for wood made hydrophobic by melamine addition

Maddalen Puyadena, Idoia Etxeberria, Gurutze Ortega, Oihane Sánz et autres

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Bio-Based Phosphate-Containing Polyester for Improvement of Fire Reaction in Wooden Particleboard

Ingemar Svensson, Amaia Butrón Janices, Maddalen Puyadena, Alba González et autres

A new phosphate-containing bio-polyester based on glycerol and citric acid was synthesized and evaluated as fire-retardant (FR) in wooden particleboards. Phosphorus pentoxide was used to first introduce phosphate esters in the glycerol followed by esterification with citric acid to produce the bio-polyester. …

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Waterborne hybrid polyurethane coatings containing Casein as sustainable green flame retardant through different synthesis approaches

Mónica Cobos, Elena Pagalday, Maddalen Puyadena, X. Cabido et autres

Waterborne polyurethane (WPU) dispersions were prepared for flame retardant coatings. Specifically, alkoxysilane-capped polycaprolactone-based WPUs were synthesized employing the acetone process, and Casein, as a green and sustainable flame retardant additive, was added by two different methods (in situ and ex situ). These …

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Polyurethane/acrylic hybrid dispersions containing phosphorus reactive flame retardants as transparent coatings for wood

Maddalen Puyadena, Idoia Etxeberria, Loli Martin, A. Múgica et autres

Phosphorus modified polyurethane/acrylic hybrid dispersions were prepared for flame retardant transparent wood coatings. The polymerisation was carried out in three steps. In the first one, the polyurethane was synthesised using an acrylic monomer as solvent. The second step involved water addition that …

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