Magnesium hydroxide particle (MHP) and magnesium hydroxide whisker (MHW) were surface modified with a newly-synthesized polyether titanate coupling agent (eTi₄₀₀₀), and then incorporated into poly(vinyl chloride) (PVC) by melt blending to prepare PVC composites. The effect of filler shape on the mechanical, thermal and flame retardant properties of the resultant PVC composites was investigated. In general, MHP/PVC composites have better mechanical, thermal and flame retardant properties than MHW/PVC composites. The flexural modulus and impact strength of eTi₄₀₀₀ modified MHP (eTi₄₀₀₀-MHP)/PVC composites are 5740 MPa and 8.3 kJ m⁻² at a 10 wt% filler loading, with an increase of 217% and 48.2% compared with that of MHP/PVC composites, respectively. Significantly, eTi₄₀₀₀-MHP/PVC composites show good flame retardancy, and the incorporation of 30 wt% of eTi₄₀₀₀-MHP results in 66.9% and 88.1% reduction of the total heat release and smoke production compared with that of pure PVC, respectively.

用新合成的聚醚钛酸酯偶联剂（eTi ₄₀₀₀）对氢氧化镁颗粒（MHP）和氢氧化镁晶须（MHW）进行表面改性，然后通过熔融共混将其掺入聚氯乙烯（PVC）中以制备PVC复合材料。研究了填料形状对所得PVC复合材料的机械，热和阻燃性能的影响。通常，MHP / PVC复合材料比MHW / PVC复合材料具有更好的机械，热和阻燃性能。eTi ₄₀₀₀改性MHP（eTi ₄₀₀₀ -MHP）/ PVC复合材料的弯曲模量和冲击强度为5740 MPa和8.3 kJ m ^-2填充量为10 wt％时，与MHP / PVC复合材料相比分别增加了217％和48.2％。值得注意的是，eTi ₄₀₀₀ -MHP / PVC复合材料显示出良好的阻燃性，与纯PVC相比，掺入30 wt％的eTi ₄₀₀₀ -MHP分别使总热量释放和烟雾减少了66.9％和88.1％ 。