標題: | Fracture toughness characterizations of compatibilized polyamide-6 (PA6)/poly(phenylene ether) (PPE) blends |
作者: | Chiou, KC Chang, FC Mai, YW 應用化學系 Department of Applied Chemistry |
關鍵字: | PA6;PPE;compatibilization;polymer blends;J-integral |
公開日期: | 1-三月-2001 |
摘要: | Under the plane-strain condition. the material properties. K-IC and G(IC), of the blends, brittle or with small-scale yielding, increase with increasing elastomer content. To evaluate the critical J-integral for the ductile blends, several methods have been compared to understand the influence of elastomer content and different thicknesses using single-edge notch-bend specimens. For a given thickness, the Fracture toughness increases with increasing elastomer content. Moveover, the slope of the R-curve becomes gradually steeper with increasing elastomer content and decreasing specimen thickness. J(IC) values determined from ASTM E813-89 and modified ASTM E813-81 methods always give the highest and the lowest values, respectively. J(IC) values determined from three other methods are comparable and can be employed to characterize the fracture toughness of the compatibilized PA6/PPE blends. it is noted that J(IC) values determined from the modified ASTM E813-89 and the hysteresis energy methods are apparently independent of thickness Therefore, these two methods may be considered as potential alternative techniques to evaluate the critical J-integral for toughened polymer blends. |
URI: | http://hdl.handle.net/11536/29784 |
ISSN: | 1022-9760 |
期刊: | JOURNAL OF POLYMER RESEARCH-TAIWAN |
Volume: | 8 |
Issue: | 1 |
起始頁: | 17 |
結束頁: | 26 |
顯示於類別: | 期刊論文 |