采用动态硫化方法制备CIIR/聚十二内酰胺(PA12)热塑性硫化胶(TPV),研究增塑剂环烷油、聚异丁烯和N-丁基苯磺酰胺对CIIR/PA12 TPV物理性能、流变性能、结晶性能、动态力学性能和气密性的影响.结果表明:N-丁基苯磺酰胺对CIIR/PA12 TPV有一定的增塑效果；与环烷油和聚异丁烯相比,N-丁基苯磺酰胺用量较小时,在保持物理性能和气密性基本不变的前提下,显著减小了TPV硬度,并改善了挤出物外观形貌和加工性能；加入N-丁基苯磺酰胺后,在不影响塑料相结晶性的前提下,PA12的玻璃化温度最大下降了40℃左右.%The CIIR/polydodecalactam 12(PA12) thermoplastic vulcanizate(TPV) was prepared by dynamic vulcanization,the influence of naphthenic oil,polyisobutylene and N-butyl benzenesulfon-amide on the physical properties, rheological behavior, crystallization, dynamic mechanical properties and air permeability of CIIR/PA12 TPV was investigated. The results showed that N-butyl benzene-sulfonamide was effective plastizer of CIIR/PA12 TPV. Compared to naphthenic oil and polyisobuty-lene,with small amount of N-butyl benzenesulfonamide,the physical properties and air permeability of TPV changed a little, but the hardness was reduced significantly, and the extrudate appearance and processing property were improved. N-butyl benzenesulfonamide had little effect on the crystallization of plastic phase,and the glass transition temperature of PA12 decreased up to 40 ℃.
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