Anti-static agent containing zinc oxide and its modification for PA6 fiber

A new anti-static agent was synthesized from zinc oxide-adipic acid-polyethylene glycol and caprolactam by three-step reactions. The antistatic agent ( called poly( ether ester amide zinc oxide) or PEEAZ) was analyzed by IR and DSC. The results showed that zinc oxide existed in the main chain of PEEAZ. The glass temperature and melt temperature of poly( ether ester amide zinc oxide) ( referred to as PEEAZ in the following) decreased with increasing poly( ether ester zinc oxide) increasing in PEEAZ. Antistatic PA6 fiber was obtained by adding PEEAZ 2 - 8% (wt/wt) to PA6 during blend spinning. The specific resistance and the static half-value period of PA6 fiber was less than 10(9)Omega.cm and 60 sec, respectively. Excellent antistatic property remained after being washed 30 times.