Mechanical and thermal behaviours of polyetheretherketone-based multi-scale composites
Mechanical and thermal behaviours of polyetheretherketone-based multi-scale composites
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DOI：
10.1177/0021998312454317
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发表时间：
2013-08
影响因子：
2.9
通讯作者：
Ly Lin;H. Tlatlik;R. Gralla;M. Igartua;P. Baets;AK Schlarb
中科院分区：
文献类型：
--
作者：
Ly Lin;H. Tlatlik;R. Gralla;M. Igartua;P. Baets;AK Schlarb
在本研究中，聚醚醚酮复合材料采用双螺杆挤出机，然后注射成型。研究了多种填料对合金力学性能和结晶性能的影响。差示扫描量热分析结果表明，填料的加入略微提高了结晶温度和结晶度。与纯聚醚醚酮相比，无机填料的掺入使基体硬度和刚度显著提高，抗拉强度略有提高。但聚醚醚酮复合材料的材料延展性、冲击强度和断裂韧性下降。断口分析表明，填料的加入抑制了聚合物的塑性变形，导致材料的延展性、冲击强度和断裂韧性降低。
In this study, polyetheretherketone composites were compounded using a two-screw extruder followed by injection moulding. The effects of multi-fillers on the mechanical properties and crystallization performances were investigated. Differential scanning calorimetry results indicate that the addition of fillers slightly increases the crystallization temperature and crystallinity. Compared to neat polyetheretherketone, the incorporation of inorganic filler leads to a significant improvement in matrix hardness, matrix stiffness and a slight increase in tensile strength. However, the material ductility, the impact strength and the fracture toughness of polyetheretherketone composites decrease. Fractography analyses show that the addition of fillers restraints the ductile deformation of polymers, which is responsible for the reduction of material ductility, impact strength as well as fracture toughness of polyetheretherketone composites.