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Sur les mécanismes de rayures des vernis de finition automobiles

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I<br />

Chapitre I<br />

Les <strong>vernis</strong> <strong>de</strong> <strong>finition</strong> automobile<br />

Famille Nom Formule chimique<br />

i.i<br />

R<br />

Mélamines totalement alkylées<br />

.R<br />

LES MELAMINES<br />

Melamtnes partiellement<br />

aikylées<br />

R<br />

HC<br />

HCN\NH<br />

N N<br />

H<br />

/ \<br />

CH<br />

NCC)<br />

o<br />

¿R<br />

Isophorone diisocyanate (IPDI)<br />

()<br />

Hexaméthylène di isocyante<br />

(HDI)<br />

N C ()<br />

LES ISOCYANATES4<br />

5 6<br />

Biuréthanne <strong>de</strong> HDI<br />

" N<br />

NH(C"<br />

Triisocyanate <strong>de</strong> HDI<br />

N<br />

OCRER) ><br />

C I 1jN C I)<br />

tableau 2 noms et formu<strong>les</strong> chimiques <strong>de</strong>s agents <strong>de</strong> réticulation <strong>les</strong> plus utilisés dans la<br />

synthèse <strong>de</strong>s <strong>vernis</strong> <strong>de</strong> <strong>finition</strong> automobile,<br />

Engbert T., Bock M., Kirihara O. High performance polyurethane clearcoats for automotive OEM, Journal of<br />

the Japan society of color material, n°72, Vol. 2 (1999) 102-107.<br />

Kahl L., Halpaap R., Warnprecht C.; 2C-PU automotive OEM clearcoats with improved etch and scratch<br />

resistance, <strong>Sur</strong>face Coatings International, n°10, Vol, 76 (1993).<br />

Potter T. A., Kahl L.; JK and 2K polyurethanes for automotive topcoats. International Congress and<br />

Exposition, Detroit, Michigan, March 1-5 (1993).<br />

14

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