PA610型热塑性弹性体的结构与性能

Structure and Properties of PA610 Thermoplastic Elastomer

以癸二酸和己二胺为原料,添加一定量聚乙二醇(2000),采用两步法熔融聚合得到系列聚醚型热塑性PA610弹性体。通过红外光谱(FT-IR)、偏光显微镜(POM)、热重(TG)、差示扫描量热(DSC)、拉伸性能测试表征了产物的分子结构、热性能和力学性能。结果表明:随着聚乙二醇用量的增加,PA610型弹性体的熔点、结晶度、拉伸强度均降低,断裂伸长率大幅提升,并表现出良好的韧性,具有典型的弹性体特征;通过调节软硬段的比例可达到对弹性体材料的可控制备。

A series of polyether thermoplasticity polyamide 610 elastomers were prepared with two- step melt polymerization by taking sebacic acid and hexamethylene diamine as raw materials and adding certain quantity of polyethylene glycol （2000）. The molecular structure, thermal and mechanical properties of products were investigated by Infrared spectra （FT-IR）, Polarizing microscope （POM）, Thermogravimetric Analysis（TG）, Differential scanning calorimetry（DSC） and tensile test, respectively. The results indicate that with the rise of polyethylene glycol dosage, the melting point, crystallinity and tensile strength of PA 610 elastomer decreased, while the elongation increased greatly and PA 610 elastomer showed good tenacity and typical elastomer features. Controllable preparation of elastomer materials could be reached through adjusting the proportion of hard and soft segments.