Effect of Temperature and Hardener Variations on Result of Painting Layers with Nitrocellulose (NC) Paint

Abstract

The finishing work using paint had almost been found on all products. Besides achieving an aesthetic appearance, the paint layer had also served to protect a product from sun exposure and even scratches. However, the paint layer had also had weaknesses, one of which was exposure to high temperatures. Temperature had been an external factor that significantly affected the surface layer of the paint. Excessive heat could have caused the paint layer to crack, fade, or even peel off. The aim of this research is to determine the impact of variations in temperature and hardener on the results of the painting layer, namely adhesion, gloss, hardness, and gasoline resistance on the results of painting using NC paint. The variations in this research were oven temperatures of 100°C and 120°C with a heating time of 20 minutes. The results on adhesion testing are classified as 5B or 0% (no surface peeling) in all variations. The best gloss power test results were 28.8GU at a temperature of 100°C using 10ml hardener. The hardness test results showed that there were no scratches on the paint surface for all variations. The results of the gasoline resistance test showed that there was no paint fading or fading when exposed to fuel in all variations by rubbing with a cloth repeatedly 50 times.