According to the low elastic problem of the PET composite hollow 3D crimp fiber,the factors that have effect on the elastic such as intrinsic viscosity,cooling condition was optimal selected and improved.The elastic of PET composite hollow 3D crimp fiber was improved,the handle was kept,obvious economic benefit was achieved.
Lead zirconate titanate is widely used as capacitor,piezoelectric devices,ferroelectric random access memory and so on because of its excellent dielectric,piezoelectric and ferroelectric properties.Effects of Zr/Ti ratio and dopant on dielectric and ferroelectric properties of lead zirconate titanate thin films are summarized in this paper.Finally,some problems on doping of lead zirconate titanate thin films are proposed.
Be aimed at the lower elasticity of PET side -by-side hollow composite fiber, the optimum amelioration was made on intrinsic viscosity and cooling condition which affected fiber elasticity. The fiber elasticity was improved, handle was remained and remarkable economic benefits was obtained
