| Titre : |
Organotin copolymer binders for self polishing antifouling paints (SPC's) : Performance of SPC A/F paints in relation to polymerization conditions and binder composition |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Pal, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 29-34 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Tags : |
'Peinture antisalissure' Liant 'Copolymère étain' 'Acrylique dérivé copolymère' Copolymérisation 'Méthacrylique acide ester méthyle' tributylstannyle' butyle' Amorceur 'Peroxyde organique' 'Composé azoïque' Performance 'Protection Etude expérimentale' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Effect of different processing variables e.g. organic initiator concentration, polymerisation temperature, monomer combination, monomer ratio on properties of organotin acrylic copolymers have been studied. A series of organotin acrylic copolymer of varying tin content, molecular waight, monomer combination and monomer ratio has been synthesised by copolymerising Tributyl tin methacrylate monomer (TBTM) with Methyl methacrylate (MMA) and MMA/Butyl acrylate (BA) combination. Organic peroxides and azo compounds of varying H-abstracting abilities and half life were employed as initiators. Azo bis isobutyro nitrile (AIBN) initiator has been found to be an effective initiator in synthesis of organotin copolymers with very low level of residual monomers. Polymerisation temperature above 140°C is having a detrimental effect on properties of organotin copolymers. IR spectrometry, atomic absorption spectrometry, Gas liquid chromatography and viscosity measurements were used to evaluate the organotin acrylic polymers.
Self polishing co-polymer A/F Paints (SPCs) with varying tin content and volume solids were formulated using these synthesised organotin copolymers. Influence of different processing variables and binder composition on performance and effectiveness of SPC A/F paints have been evaluated by measuring the dry film thickness over a definite interval of time i.e. erosion rate & degree of fouling. It has been found that polishing rate of these SPC A/F paints depends on the ratio of methyl methacrylate & TBTM and on the nature of acrylate monomer used. Ratio of MMA/TBTM is inversely proportional to erosion rate of SPC's. BA/MMA/TBTM based organotin copolymer has faster rate of polishing than MMA/TBTM based copolymers. |
| Note de contenu : |
- WORK DONE ON SELF POLISHING A/F PAINTS (SPCs) - Major advantages of Self Polishing Copolymer AF paints (SPCs)
- EXPERIMENTAL - Self polishing antifouling paints formulations
- TEST METHODS - Characterization of copolymers and tributylt in methacrylate (TBTM) monomer
- RESULTS AND DISCUSSION - Synthesis of tributyl tin methacrylate monomer (TBTM) |
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https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=13473 |
in PAINTINDIA > Vol. XLVI, N° 4 (04/1996) . - p. 29-34
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