可控交联聚芳醚酮热塑性复合材料的制备及电子束辐照对其结构和性能的影响

Study on the Forming Process and Electron Beam Irradiation Treatment of a Thermoplastic Controllable Crosslinking Poly (Aryl Ether Ketone) Matrix Composites

报道了一种可溶性可控交联聚芳醚酮(CCPAEK)热塑性复合材料的制备方法。通过不同温度下CCPAEK树脂熔融指数的测定,得到合适的热塑性复合材料成型温度及压力制度。研究了CCPAEK的电子束(EB)辐照交联特性,对热塑性复合材料进行一定剂量的EB辐照处理,并考察了辐照对复合材料结构和性能的影响。DSC及DMTA分析结果表明,复合材料辐照后的玻璃化转变温度有所增加。辐照后复合材料的弯曲强度得到明显提高,但弯曲模量和层间剪切强度基本不变。SEM分析说明辐照对材料的界面性能无明显影响。

The forming process of a thermoplastic Controllable Crosslinking Poly (Aryl Ether Ketone) (CCPAEK) matrix composite was reported in this paper. The temperature and press program of the thermal forming process was confirmed through determining Melt Index (MI) of the CCPAEK at different temperatures. The electron beam (EB) irradiation character of the CCPAEK matrix was studied and the thermoplastic composite specimens were EB irradiated at a certain dosage. The influences of EB irradiation on the structure and properties of the composites were studied. The glass transition temperatures (Tg) of the irradiated couples were found enhanced limitedly by means of Differential Scanning Calorimeter (DSC) and Dynamic Mechanical Thermal Analysis (DMTA). The flexural strength of EB-treated specimen increased while the flexural module and the short beam shear strength changed unobviously. Scanning Electron Microscope (SEM) showed that the irradiation had almost no influence on the interfacial structures of the composites.