利用双螺杆挤出机熔融共混的方法制备了不同含量的碳纤维(CF)与尼龙共聚物(PA6T/66)复合材料,通过差示扫描量热仪、热重分析仪、扫描电子显微镜和力学性能测试研究了该复合材料的热性能、力学性能和断面形态结构。结果显示,复合材料的...利用双螺杆挤出机熔融共混的方法制备了不同含量的碳纤维(CF)与尼龙共聚物(PA6T/66)复合材料,通过差示扫描量热仪、热重分析仪、扫描电子显微镜和力学性能测试研究了该复合材料的热性能、力学性能和断面形态结构。结果显示,复合材料的起始分解温度均在400℃以上,熔点都在300℃左右。随着CF含量的增加,复合材料的拉伸强度、弯曲强度和冲击强度都相应增加,当CF质量分数达到40%时,复合材料的拉伸强度、弯曲强度和冲击强度分别达到最大值:226.1 MPa、354.7 MPa、54.1 k J/m2。展开更多
Polycarbonate(PC) is thermodynamic incompatible with Nylon 6(PA6). Addition of compatibilier and modifier in PC and PA6 blends can lower the interface energy, increase the compatibility, and get a stable PC/PA6 alloy....Polycarbonate(PC) is thermodynamic incompatible with Nylon 6(PA6). Addition of compatibilier and modifier in PC and PA6 blends can lower the interface energy, increase the compatibility, and get a stable PC/PA6 alloy. PC/PA6 alloys were prepared by twin screw extrusion compounding process. The mechanical property was measured. The crystal structure and properties were studied with X ray diffraction(XRD) and differential scanning calorimetry(DSC). The crystal structure of PA6 is affected dramatically and a new crystal form is formed because the introduction of compatibilier and modifier enhanced the interaction between PC and PA6. The crystallinity is decreased and the crystallization kinetics is slowed down. The high performance PC/PA6 alloy has been obtained. [WT5HZ]展开更多
文摘利用双螺杆挤出机熔融共混的方法制备了不同含量的碳纤维(CF)与尼龙共聚物(PA6T/66)复合材料,通过差示扫描量热仪、热重分析仪、扫描电子显微镜和力学性能测试研究了该复合材料的热性能、力学性能和断面形态结构。结果显示,复合材料的起始分解温度均在400℃以上,熔点都在300℃左右。随着CF含量的增加,复合材料的拉伸强度、弯曲强度和冲击强度都相应增加,当CF质量分数达到40%时,复合材料的拉伸强度、弯曲强度和冲击强度分别达到最大值:226.1 MPa、354.7 MPa、54.1 k J/m2。
文摘Polycarbonate(PC) is thermodynamic incompatible with Nylon 6(PA6). Addition of compatibilier and modifier in PC and PA6 blends can lower the interface energy, increase the compatibility, and get a stable PC/PA6 alloy. PC/PA6 alloys were prepared by twin screw extrusion compounding process. The mechanical property was measured. The crystal structure and properties were studied with X ray diffraction(XRD) and differential scanning calorimetry(DSC). The crystal structure of PA6 is affected dramatically and a new crystal form is formed because the introduction of compatibilier and modifier enhanced the interaction between PC and PA6. The crystallinity is decreased and the crystallization kinetics is slowed down. The high performance PC/PA6 alloy has been obtained. [WT5HZ]
