硫酸钙晶须表面改性及其对PA66复合材料性能的影响  

Surface Modification of Calcium Sulfate Whisker and Its Effects on the Properties of PA66 Composites

作　　者：路广[1,2] 杨留栓[1,2] 汪潇[2] 刘雪平[3] 赵亚奇[3] 李辉[3] 

机构地区：[1]材料科学与工程学院,河南郑州410000 [2]河南城建学院土木工程学院,河南平顶山467036 [3]河南城建学院化学与材料工程学院,河南平顶山467036

出　　处：《塑料科技》2016年第4期47-51,共5页Plastics Science and Technology

基　　金：河南省科技攻关计划项目(BS200101)

摘　　要：采用油酸钠对硫酸钙晶须(CSW)进行表面改性,并以之为填料通过共混的方法制备了聚酰胺66(PA66)/CSW复合材料。研究了油酸钠用量对CSW表面活化指数的影响,同时考察了PA66/CSW复合材料的力学性能。结果表明:油酸钠提高了CSW表面活化指数,改善了其对极性树脂的结合性能。当油酸钠用量为4%、改性温度为140℃、反应时间为20 min时,CSW具有良好的包覆效果,其表面活化指数可达96%。CSW经油酸钠改性后,PA66/CSW复合材料的冲击和拉伸强度均有显著提高。The surface of calcium sulfate whisker（CSW） was modified by sodium oleate. With the modified CSW as filler, the polyamide 66（PA66）/CSW composites were prepared by blending method. The influences of sodium oleate content on surface activation index of the modified CSW and the mechanical properties of the PA66/CSW composites were studied. The results show that, the surface activation index of the CSW modified by sodium oleate, and binding capacity between a polar resin and CSW are improved. The modified CSW has a good coating effect, and the surface activation index can be up to 96%, when the sodium oleate dosage is 4%, the modification temperature is 140℃, and the reaction time is 20 min. And the impact and tensile strength of the PA66/CSW composites increase significantly after the CSW is treated with sodium oleate.

关 键 词：硫酸钙晶须 聚酰胺66 表面改性 活化指数 共混改性 

分 类 号：TQ323.6[化学工程—合成树脂塑料工业] TQ327.5