Combined X-ray Scattering and Molecular Modeling Study of ManufacturingProcessing of Polymers and Composites

摘要

Measurement of the coefficient of thermal expansion (CTE) of the crystallinelattice of two semicrystalline thermoplastic polyimides are reported. NEW-TPI and LARC-CPI polyimides were studied using high temperature wide angle X-ray scattering from 25C up to 325C. Systematic shifts in the a-, and b-axis lattice parameters were seen. No c-axis expansion was detected. jg p.1.