Journal
FIBERS AND POLYMERS
Volume 15, Issue 5, Pages 1071-1077Publisher
KOREAN FIBER SOC
DOI: 10.1007/s12221-014-1071-5
Keywords
Carbon fiber composite; Thermoplastic polyurethane; Polyamide-polyurethane blend; Polyurethane sizing; Mechanical property; Thermal property
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Funding
- Ministry of Science, ICT and Future Planning of Korea, from the RCT (Regional Connection Technology) [R0000508]
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In this article, we demonstrated the preparation of carbon-fiber-reinforced composites using a polyamide 6 (PA6)/thermoplastic polyurethane (TPU) blend, in which the addition of TPU resulted in superior mechanical performances and increased thermal stability. According to various characterization techniques, these results are attributed to an enhanced adhesion and a homogeneous dispersion of long-carbon-fibers (LCFs) with TPU sizing in blended polymer matrix. Above all, dynamic-mechanical thermal analysis (DMTA) measurements clearly show that the dynamic storage modulus (E) of the blend composites is increased by threefold with temperature ranges below and above the glass transition temperature. The presence of LCFs in TPU systems induces effective fiber orientation, exhibiting simultaneous improvements in the tensile strength, flexural strength, and thermal stability.
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