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中文摘要：
研究了纳米水滑石（HT）对聚氯乙烯（PVC）热稳定性能的影响及其作用机理。静态热稳定性实验发现HT吸收HCl的能力与用量呈线性关系；动态热稳定实验发现将HT与硬脂酸钙、硬脂酸锌进行复配后，HT用量为1份时协同作用最明显；Haake转矩流变仪测试表明：HT能够促进PVC的塑化，缩短塑化时间；PVC的热分解产物及热失重测试表明，HT能够提高PVC高温分解过程中的成炭能力，抑制PVC热分解过程中苯类衍生物的释放，改善PVC体系的抑烟性能；通过FHR测试表明，HT能与PVC主链上的Cl产生相互作用，使C—Cl伸缩振动往低波数方向移动。
英文摘要：
The effect and mechanism of nano-hydmtalcite （HT） on the thermal stability of PVC were studied. The results of static thermal stability test showed HCl capacity was a linear relationship with HT content ; the results of dynamic thermal stability test showed when HT was compounded with CaSt2 and ZnSt2 and the content of HT was 1 phr, the synergistic effect was the most obvious; the results of Haake rehology research showed the plasticization ability of PVC filled with HT was increased and the plasticization time was shortened; the investigation of the decomposition after PVC burned （at 500 ℃） showed HT could reduce the beneze, and thermogravimetric analysis result also showed HT could increase the content of the charring at high-temperature. The results of FTIR showed the positive lay charge of hydrotalcite could act with the electron cloud of chlorine atoms in PVC chain and weaken the activity.
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