Design of New Easy Processing High Modulus Compounds for Fiber Optic Cable Use

摘要

Novel polyolefin compounds for fiber optic loose buffer tube and core tube applications feature an improved balance of high modulus and enhanced extrusion processing characteristics. One new higher modulus material with good toughness and improved buffer tube grease compatibility provides an advantaged balance of properties for the buffer tube application. Another new material incorporating high melt strength is a preferred material for core tube (central tube), slotted cores, and similar profile extrusion applications benefiting from improved dimensional control and reduced melt sag. Both materials also provide a low post extrusion shrinkage, which contributes to reducing optic fiber signal attenuation by minimizing excess fiber length associated with axial compression of the fiber core. Key application performances for these new materials will be outlined along with comparisons to materials currently in commercial use.