中文摘要：

将经硬脂酸钠、油酸钾等表面改性的氢氧化镁晶须与PVC塑料混炼制得氢氧化镁须／PVC复合材料，研究了氢氧化镁晶须含量及分布状态对PVC材料力学性能的影响。结果表明：表面改性氢氧化镁晶须能均匀地分布于PVC塑料中；当氢氧化镁晶须的含量达到30％时，所得复合材料的综合力学性能最佳，其中弹性模量较纯PVC塑料提高了41．18％，达到0．24GPa。氢氧化镁晶之所以能增强PVC材料的力学性能，主要是由于均匀分布的晶须承担了应力在复合材料中的传递。

英文摘要：

Mg（OH） 2 whiskers that are surface-modified by sodium stearate and potassium oleate and PVC plastics were made into an Mg（OH） 2 whiskers/PVC composite. The effect of Mg（OH） 2 whiskers＇content and distribution on PVC＇s mechanical properties were studied. The results show that surface-modified Mg（OH） 2 whiskers can be distributed homogeneously in PVC plastic; when the Mg（OH） 2 whiskers amount to 30% of the composite,the PVC composite has the best mechanical properties, with the elastic modulus improved by 41.18% compared with that of pure PVC plastics, and reaching 0.24 GPa. The main reason for this is that Mg（OH） 2 whiskers that are uniformly distributed assume the load transfer in the composite.