Fiber length, thermal, mechanical, and dynamic mechanical properties of injection-molded glass-fiber/polyamide 6,6: Plasticization effect
Document Type
Article
Publication Date
1-1-2011
Abstract
Unreinforced- and glass fiber-reinforced-polyamide 6,6 specimens were subjected to dry, 50 RH, and wet conditions. FLD study showed that more fiber degradation occurred during processing of the composites with higher fiber loading. TGA results revealed that about 2 and 5 levels of moisture have been absorbed by the specimens subjected to 50 RH and wet conditions, respectively. From DSC results, with moisture uptake, there were no significance changes in the melting temperature, crystallization temperature, and enthalpy of crystalline; however, degree of crystallinity and enthalpy of melting decreased. Tensile strength, tensile modulus, flexural strength, and flexural modulus decreased with moisture uptake, while tensile strain and flexural displacement increased. DMA study showed that tan delta at room temperature and tan delta maxima increased with moisture absorption, while temperatures at maximum tan delta in α-and β-transition regions decreased.
Keywords
dynamic mechanical properties glass fiber composites mechanical properties plasticization effect thermal properties Crystallization temperature Degree of crystallinity Dynamic mechanical property Fiber degradation Fiber length Fiber loadings Flexural displacements Flexural modulus Flexural strength Melting temperatures Moisture absorption Moisture uptake Plasticization effects Room temperature Tensile moduli Transition regions Wet conditions Dynamics Enthalpy Fibers Glass fibers Melting Moisture Tanning Tensile strain Tensile strength
Divisions
CHEMISTRY
Publication Title
Journal of Reinforced Plastics and Composites
Volume
30
Issue
6