Affiliation:
1. Department of Chemistry, Polymer and Composite Materials Research Laboratory, University of Malaya, Malaysia,
2. Department of Chemistry, Polymer and Composite Materials Research Laboratory, University of Malaya, Malaysia
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.
Subject
Materials Chemistry,Polymers and Plastics,Mechanical Engineering,Mechanics of Materials,Ceramics and Composites
Reference32 articles.
1. Effect of glass-fibre reinforcement and annealing on microstructure and mechanical behaviour of nylon 6,6
2. Mechanical properties of palmyra/glass fiber hybrid composites
3. Garbassi F. and Po R. Engineering Thermoplastics - Overview. In: Mark HF (ed.) Encyclopedia of Polymer Science and Technology . 3rd edn. Volume 2, New York: John Wiley and Sons, 2003, pp.307-328.
4. ASTM Standard, Standard Test Method for Tensile Properties of Plastics, 2003, D638-03, pp. 228-244.
5. ASTM Standard, Standard Practice for Conditioning Plastics for Testing, 2000, D618-00, pp. 39-42.
Cited by
30 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献