Injection Molded Glass Fiber Reinforced Poly(trimethylene terephthalate) Composites: Fabrication and Properties Evaluation

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• 作者：Wanjun Liu ; Amar K. Mohanty ; Lawrence T. Drzal ; Manjusri Misra ; Joseph V. Kurian ; Ray. W. Miller ; and Nick Strickland
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2005
• 出版时间：February 16, 2005
• 年：2005
• 卷：44
• 期：4
• 页码：857 - 862
• 全文大小：513K
• 年卷期：v.44,no.4(February 16, 2005)
• ISSN：1520-5045

文摘

Injection-molded composite materials as fabricated from chopped glass fiber and poly(trimethylene terephthalate), PTT, are evaluated through physicomechanical and thermomechanicalanalysis. Differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA) wereused to measure the thermal properties of the above composites. The mechanical propertiesincluding impact properties, tensile properties, and flexure properties of these composites weretested with a United Testing System SFM-20. Results showed that impact strength, tensilestrength and modulus, flexure strength, and modulus of glass fiber reinforced PTT compositeswere improved significantly with increasing fiber content. The simultaneous improvement ofboth stiffness and toughness of composite materials is one of the important findings of thisinvestigation. It was found that the crystallization temperature of PTT increased and heatdeflection temperature doubled through reinforcement with glass fiber. The tensile fracturedsurfaces are evaluated through environmental scanning electron microscopy (ESEM) for studyingthe interaction between fiber and the matrix.