主链液晶离聚物/PA1010/PP共混合金的力学性能及热行为

Effect of Liquid Crystalline Ionomer on the Thermal Behavior and Tensile Strengths of PA1010/PP Blends

一种主链含磺酸基的热致液晶离聚物 (LCI)作为增容剂被应用于PA10 10与PP的共混改性·用DSC ,TGA和拉伸试验对共混合金的热行为和力学性能进行了研究·结果表明 ,PA10 10 /PP共混合金中加入 0 2 %～ 0 6 %LCI时增容作用增强·含LCI8%时 ,共混合金结晶温度和结晶度有较大提高 ,结晶完善程度略有降低 ,结晶速率降低 ,热稳定性不变·共混材料的拉伸强度为 2 2 3MPa比纯PA10 10的拉伸强度 15 6MPa明显增强 ,LCI中磺酸基的存在对共混合金中PA10 10组分影响较显著 ,增容机理是PA10 10的酰胺基与LCI的磺酸基间强烈的相互作用·

Effect of main chain liquid crystalline ionomer (LCI) on the crystallization behavior of the PA1010/polypropylene(PP) blends was investigated by DSC,TGA and tensile test. The blends with 0 8% LCI content could improve the crystallinity of PA1010/PP blends, and increase the crystallizing temperature ( t C) and the tensile strength of the blends. The tensile strength of blends with 0 8% LCI is 22 3?MPa,which is higher than 15 6?MPa of pure PA1010. The LCI component is found as a compatibilizer to promote the crystallizability of PA1010 and PP,it is due to strong intermolecular attractive interactions between the sulfonate and amide group.