ipcm® Protective Coatings 2014 n. 09

Page 55

Franco Martinazzo ST Powder Coatings Spa, Montecchio Maggiore (VI), Italy info@stpowdercoatings.com

Table 1: Corrosion resistance of EY-658-7300-001 and EZ-658-7300010 on Zinc phosphate steel panels, over coated with polyester powder coatings code P2-858-9010-010 (ISO 9227 neutral salt spray).

Tabella 1: Resistenza alla corrosione di EY-658-7300-001 e EZ-6587300-010 applicati su pannelli in acciaio pretrattati con Fosfati di Zinco e sovraverniciati con finitura poliestere cod. P2-858-9010-010 (ISO 9227 neutra).

Primer Tested EY-658-7300-001

1.000 hours No blistering. No film detachment.

2.000 hours No blistering. No film detachment.

3.000 hours No blistering. No film detachment.

4.000 hours No blistering. No film detachment.

5.000 hours No blistering. No film detachment.

EZ-658-7300-010

No blistering. No film detachment.

No blistering. No film detachment.

No blistering. No film detachment.

No blistering. No film detachment.

No blistering. No film detachment.

Table 2: Corrosion resistance of EY-658-7300-001 and EZ-658-7300-010 on Iron phosphate steel panels, over coated with polyester powder coatings code P2-858-9010-010 (ISO 9227 neutral salt spray).

Tabella 2: Resistenza alla corrosione di EY-658-7300-001 e EZ-658-7300010 applicati su pannelli in acciaio pretrattati con Fosfati di Ferro pesante e sovraverniciati con finitura poliestere cod. P2-858-9010-010 (ISO 9227 neutra).

Primer Tested EY-658-7300-001

500 hours No blistering. No film detachment.

1.000 hours No blistering. No film detachment.

2.000 hours No blistering. Film detachment near the crosscut (3-6 mm)

EZ-658-7300-010

No blistering. No film detachment.

No blistering. No film detachment.

No blistering. Film detachment near the crosscut (1-8 mm)

The anticorrosive properties of both primer (EZ and EY), combined with an appropriate pre-treatment cycle, allow to reach and widely exceed the corrosion resistance tests for the highest durability levels described in Regulation ISO 12944 (C5-I e C5-M). Some coated panels subjected to accelerating aging test are shown in the images below.

Le proprietà anticorrosive di entrambi i primer, combinati con un adeguato ciclo di pretrattamento, consentono di raggiungere e superare ampiamente i test di resistenza alla corrosione previsti per le più alte classi di durabilità descritte nella Norma ISO 12944 (C5-I e C5-M). Una immagine dei provini sottoposti al test di invecchiamento accelerato è riportata di seguito.

49 APRIL 2014


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ipcm® Protective Coatings 2014 n. 09 by ipcm® International Paint&Coating Magazine - Issuu