[article]
| Titre : |
Breaking the mould |
| Type de document : |
texte imprimé |
| Auteurs : |
John Gillatt, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 21-25 |
| Langues : |
Anglais (eng) |
| Catégories : |
Algicides
Antifongiques
Antimicrobiens
Revêtements en bâtiment -- Détérioration:Peinture en bâtiment -- Détérioration
Revêtements en bâtiment:Peinture en bâtiment
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Changing labelling regulations require new ideas and the introduction of new blends of biocides. The author explores the strategies for decontamination. Of the three main groups of microorganims that can infect paints, plasters and similar surface coatings it is fungi and algae that are especially problematic after the material has been applied. Fungi cause surface disfigurement and actual degradation, while algae also detract from the product's aesthetic qualities as well as retaining high levels of moisture with resultant damaging effects. Exterior surfaces can become infected with both types of organisms and broad-spectrum antifungal or antialgal biocides have been developed to prevent such growths. However, changing legislation relating to the labelling of such biocides, pressure from environmental and consumer groups and revised regulations concerning insulation of buildings, have placed greater and greater demands on biocides and have created a need for new products with novel properties. |
| Note de contenu : |
- Specialist requirements
- Microorganisms on coatings
- Effects of fungi and algae
- Preventio, methods
- Surface coating biocides
- Biocides for dry-film protection
- Changing Demands
- Evironmental/ consumer pressure
- Changed building construction
- Better insulation, worse growth
- New properties for biocides
- Development of new biocides
- Discolouration
- Greater demands on products
- FIGURES : 1. (far below) ; Fungi and algae can deface buildings even in cold conditions, while humid climates are a natural heaven for orgnaisms (Figure 2 below), and can even create a plafromr for the growth of higher plants (Figure 3) - 4. Cavity wall and ETICS wall structures showing heat transfer processes - 5. Reduced leaching of silica adsorbed OIT from a paint film - 6. Delta B values for five biocides
- TABLES : 1. Predominant fungi and algae found in sites around the world - 2. Properties required of a surface coating biocide - 3. Fungicides and algicides for surface coatings - 4. Minimum inhibitory concentration (MICs) of four fungicides - 5. Disadvantages of dry-film fungicide active agents - 6. Fungal and algal efficiency tests with two biocides blends |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27826 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 193, N° 4469 (10/2003) . - p. 21-25
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Breaking the mould in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 193, N° 4469 (10/2003)
