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以四针状ZnO晶须(T-ZnO_W)为填料,经过表面处理与聚丁二酸丁二醇酯(PBS)复合,采用熔融共混法制备了T-ZnO_w/PBS复合材料。利用FTIR表征表面改性T-ZnO_W的结构,利用SEM观察改性T-ZnO_W和T-ZnO_W/PBS复合材料的形貌,利用XRD分析改性T-ZnO_W和复合材料的结晶性能,利用TG和DSC分析复合材料的热稳定性,利用拉伸试验研究复合材料的力学性能。研究结果表明:聚乙二醇2000(PEG2000)(P)、硬脂酸(S)和硅烷偶联剂(KH560)(K)三种不同改性剂,硬脂酸对T-ZnO_W的改性效果最佳。经硬脂酸改性T-ZnO_W(ST-ZnO_W),表面负载有机活性基团,表面粗糙度增加且与纯PBS之间界面结合力增强,使ST-ZnO_W/PBS复合材料的热稳定性和力学性能明显得到改善。热分解过程中质量损失10%的温度(T_(d-10%))和最大热分解温度(T_(d-max))较纯PBS分别提高了37.7℃和35.3℃;拉伸强度、断裂伸长率和弹性模量分别提高了17.7%、140.5%和95.4%。
T-ZnO_w / PBS composites were prepared by melt blending with four-needle ZnO whiskers (T-ZnO_W) as filler and surface treatment with polybutylene succinate (PBS). The structure of T-ZnO_W was characterized by FTIR. The morphologies of T-ZnO_W and T-ZnO_W / PBS composites were observed by SEM. The crystallinity of the modified T-ZnO_W and the composites was analyzed by XRD. The thermal stability of the composite was analyzed by DSC. The tensile test was used to study the mechanical properties of the composite. The results showed that the modification of T-ZnO_W by three different modifiers of PEG2000 (P), stearic acid (S) and silane coupling agent (KH560) (K) Best effect. After the ST-ZnO_W (ST-ZnO_W) was modified by stearic acid and the surface was loaded with organic active groups, the surface roughness increased and the interfacial adhesion with pure PBS increased. The thermal stability of ST-ZnO_W / PBS composites and The mechanical properties have obviously improved. Compared with the pure PBS, the temperature (T_ (d-10%)) and the maximum thermal decomposition temperature (T_ (d-max)) of the mass loss in the thermal decomposition process increased by 37.7 ℃ and 35.3 ℃, respectively; tensile strength, The length and elastic modulus increased by 17.7%, 140.5% and 95.4% respectively.