Preparation And Properties Of High-relative Viscosity Nylon 6 Films

Nylon 6 films have the excellent performance, so they are widely used in many fields. Because of the progress of science and technology, nylon 6 films must have higher performance.In this study, High-relative viscosity nylon 6 were prepared by means of anionic polymerization as main material, formic acid was used as a solvent.The effect of temperature and relative viscosity were discussed on solution viscosity. The effects of relative viscosity,temperature,plasticizer and low-molecular-weight nylon 6 resin on mechanical properties of nylon 6 films were investigated. The results showed that nylon 6 solution viscosity was decreasing with the increasing of temperature. Under the same temperature, the solution viscosity was increasing with the raising of high-relative viscosity of nylon 6. Mechanical properties of nylon 6 films, such as modulus,yield stress,peak load and breaking strength were increasing with the increasing of relative viscosity and temperature. The addition of plasticizer and low-molecular-weight nylon 6 resin increase the tensile strength of nylon 6 films. The addition of CaCO₃ decrease the breaking strength and tensile strength of nylon 6 films . Adding anhydrous calcium chloride to the solution to produce complex films of nylon 6. The tensile property of nylon 6 films were improved above three times. The mechanical properties of nylon 6 films restore efficiently through decomplexation by water.