通过熔融挤出法制备了不同改性硅灰石(Ca3(Si3O9))含量的尼龙6(PA6)复合材料,利用IR、AFM、流变仪和电子拉伸机等研究了Ca3 (Si3O9)的含量对PA6/Ca3(Si3O9)复合材料流变性能和力学性能的影响.力学性能研究结果表明,随着Ca3(Si3O9)用量的增加,PA6/Ca3(Si3O9)复合材料拉伸强度和冲击强度呈现出先增大后减小的趋势,Cas(Si3O9)加入量为15％时复合材料拉伸强度和弯曲强度分别达到最大值90.8 MPa和10.3 kJ/m2.流变行为研究结果表明,PA6/Ca3(Si3O9)复合材料属于典型的切力变稀非牛顿流体,增加Ca3(Si3O9)的用量,复合材料储能模量、损耗模量和零剪切黏度明显增大,结合AFM测试发现第二平台的出现是因为Ca3(Si3O9)在基体中产生团聚现象导致相分离产生的.
PA6/Ca3 (Si3O9) blends were prepared by malting co-extrusion.The effect of Ca3 (Si3O9) contents on the rheological behavior and mechanical properties was investigated by IR,AFM,advanced rheometer (ARES-G2) and teseing mechine.The mechanical properties results show that with increases of the Ca3 (Si3O9) content,the tensile strength and the notch impact strength increase first and decrease finally.When the Ca3 (Si3O9) content is 15 ％,the tensile strength and bending strength of the compound reach the maximum values of 90.8 MPa and 10.3 kJ/m2.the rheological behavior results indicate that PA6/Ca3(Si3O9) composites are typical of shear-thinning nonNewtonian fluid,the storage modulus,loss modulus and zero shear viscosity are improved with increasing the amount of Ca3 (Si3O9),whatmore.In combination with AFM test found that the occurrence of the second platform is attributed to Ca3(Si3O9) reunion phenomenon that causes separation in the matrix.
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