頁籤選單縮合
題 名 | Variation of Flow Induced Phase Morphology of Fluoroelastomer and Polycarbonate Blends and Their Mechanical Properties |
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作 者 | Tsai,Hsien-yin; Min,K.; | 書刊名 | Journal of Polymer Research |
卷 期 | 4:4 1997.10[民86.10] |
頁 次 | 頁221-232 |
分類號 | 346.84 |
關鍵詞 | Phase morphology; Mechanical property; Fluoroelastomer; Polycarbonate; Shear stress; |
語 文 | 英文(English) |
英文摘要 | The variations of the flow induced phase morphology of fluoroelastomer /polycarbonate(FL/PC) extruded blends and their mechanical properties were investigated in this paper. The phase morphology and mechanical property of extruded blends under the capillary die were examined by scanning electron microscope (SEM) and tensile machine, respectively. From SEM observation, the dispersed phases in the longitudinal direction for these extruded blends were categorized as sphere, ellipsoid, rod, and fiber. Furthermore, the processing window for the deformation of phase morphology in the longitudinal direction for FL/PC 10/90 w/w and 25/75 w/w extruded blends at 235 and 260℃ was studied. As shear stress was smaller than 7.0 X 10�� Pa, the spherical phase almost did not deform. The transformation from the sphere to the fiber form occurred in the range of shear stress 7.0 X 10�� Pa and 15.8 X 10�徟a. In particular, as shear stress was larger than 15.8 X 10�徟a, the fiber broke up into a series of small droplets. Finally, it was concluded that the morphology with the mixture of fiber-like and spherical structures in the longitunndinal direction could enhance the FL/PC blends with longer break elonger break elongation and higher Young's modulus. |
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