Preparation and Properties of High-relative Viscosity Nylon 6 Film

Nylon 6 films were prepared by means of casting method,with high-relative viscosity nylon 6 as main material and formic acid as a solvent,in which the nylon 6 was prepared by means of anionic polymerization.The effects of temperature and the relative viscosity of the resin on the viscosity of the solution were discussed.The effects of the relative viscosity of the resin and temperature on the mechanical properties of nylon 6 films were investigated.The results showed the solution viscosity of high-relative viscosity nylon 6 could be up to 400 Pa·s,the viscosity of nylon 6 solution decreased with the rise of the temperature;at the same temperature,the solution viscosity increased with the raising of the high-relative viscosity of nylon 6;the mechanical properties of nylon 6 films,such as modulus,yield stress,peak load and breaking strength increased with the increase of the relative viscosity of the resin and temperature.