Effect of corona intensity on the hydrophobicity recovery characteristics of HTV silicone rubber

This paper has investigated the influence of corona intensity on the hydrophobicity recovery characteristics of HTV silicone rubber (SIR) deteriorated by corona discharge. The accelerating aging experiments of HTV silicone rubber were carried out with five levels of corona voltage. The hydrophobicity recovery with time was measured by static contact angle method. The experimental results show that the hydrophobicity of HTV silicone rubber can get some recovery after the corona deterioration, and the corona intensity play an important role on static contact angle of HTV SIR. In general, the procedure of hydrophibicity recovery would be varied with the different corona intensity and varied corona deterioration duration. And the hydrophibicity would not be recovered as original when the corona intensity is high enough under an certainty deterioration duration time.