Comportamento dinâmico-mecânico e relaxações em polímeros e blendas poliméricas

Química Nova

Silvana Navarro Cassu²  Maria Isabel Felisberti¹ 

[1] ,Instituto de Aeronáutica e Espaço Centro Técnico Aeroespacial Divisão de QuímicaSão José dos Campos SP

关键词: DMA;    polymer;    polymer blends;   

DOI  :  10.1590/S0100-40422005000200017

来源: SciELO

【 摘 要 】

Dynamic mechanical analysis (DMA) is widely used in materials characterization. In this work, we briefly introduce the main concepts related to this technique such as, linear and non-linear viscoelasticity, relaxation time, response of material when it is submitted to a sinusoidal or other periodic stress. Moreover, the main applications of this technique in polymers and polymer blends are also presented. The discussion includes: phase behavior, crystallization; spectrum of relaxation as a function of frequency or temperature; correlation between the material damping and its acoustic and mechanical properties.

【 授权许可】

CC BY-NC   
 All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License