The dynamic mechanical behaviour of highly oriented tapes and monofilaments of thermotropic liquid crystalline polymers based on hydroxynaphthoic acid, terephthalic acid and either aminophenol (designated HNATA) or hydroquinone (designated HNATH) have been studied in tension and torsion. It was found that the mechanical properties of these two polymers were very similar. In the case of HNATA both the tensile modulus and the chain modulus determined from X-ray diffraction measurements were studied as a function of applied stress. The aggregate model, when extended to include non-linearity, modelled the macroscopic tensile and shear behaviour with some success. The X-ray measurements could not be reconciled with the macroscopic measurements, which is tentatively attributed to the fact that these materials possess a complex hierarchical morphology
Посилання на статтю:
Mechanical properties of thermotropic liquid crystalline polyesters and polyarnides / H. Zhang, G. R. Davies and I. M. Ward // Polymer. – 1992. – Vol 33. – P. 2651-2658.