一种长链结构稳态哌啶氮氧自由基的性能  

Properties of an Stable Piperidinooxyl Radical with Long-Train Structure

作　　者：卢赟[1] 谭惠民[1] 

机构地区：[1]北京理工大学材料科学与工程学院,北京100081

出　　处：《华东理工大学学报（自然科学版）》2006年第10期1173-1176,共4页Journal of East China University of Science and Technology

摘　　要：合成了长链结构的氮氧自由基，并通过电子自旋共振（ESR）测试证明了产物的结构。通过膨胀计试验证明了长链型稳态哌啶氮氧自由基对以AIBN为引发剂，60℃下热引发的苯乙烯本体聚合有明显的阻聚作用。紫外吸收光谱测试表明该长链型氮氧自由基对引起塑料老化的，波长在230～350nm之间的紫外光有强烈的吸收。TG测试证明该氮氧自由基有良好的热稳定性，将有可能作为一种优良的塑料光稳定剂使用。Piperidinooxyl radical with long-train structure is synthesized. The ESR spectrogram proves that piperidinooxyl radical is produced. The dilatometer tests prove that the piperidinooyl radical with long-train structure performs prominent inhibition role on styrene bulk polymerization initiated with AIBN on 60 ~C. The ultraviolet-visible spectrometry reveals that the piperidinooyl radical with long-train structure strongly absorbs the UV light which will cause the plastic aging and whose wavelength is between 230-350 nm. TG analysis shows that the piperidinooyl radical with long-train structure are quite stable at high temperature. The results indicate that the piperidinooyl radical with long-train structure is capable of being used as a kind of plastic additive with good anti-aging performance.

关 键 词：长链型稳态哌啶氮氧自由基 阻聚 紫外吸收 

分 类 号：O63[理学—高分子化学]