A kind of reactive inorganic polymer-poly(dichloro)phosphazene was prepared by ring-opening polymerization at a high temperature. Then a new conductive polyphosphazene containing pyrrole groups was synthesized by nucl...A kind of reactive inorganic polymer-poly(dichloro)phosphazene was prepared by ring-opening polymerization at a high temperature. Then a new conductive polyphosphazene containing pyrrole groups was synthesized by nucleophilic reaction between the inorganic polymer and sodium salts of N-hydroxyethylpyrrole. The chemical structure and properties of the polymers were characterized by 1H, 31P NMR, FTIR, DSC, TGA and GPC. The experimental results indicate that the molecular weights of pyrrole-containing soluble polymer are M n=4.1×10 5, M w=9.2×10 5( M w/ M n=2.24) and the T g is 237 K. A high qulity film was obtained from the soluble polymer through spin-coating method. Using FeCl 3 as oxidiant, the polymer film underwent crosslinking reaction to form conjugated polypyrrole. After the oxidation reaction, the color of polymer film turned into light black from almost transparent and the conductivity was determined to be 1.7×10 -5 S/cm, it is 1×10 5 times greater than that of the original film. The crosslinked polymer shows a high thermal stability.展开更多
用 DSC对三羟甲基丙烷三甲基丙烯酸酯 (TMPTMA)存在下的间规聚丙烯过氧化物交联进行了研究。根据交联过程中反应热焓的变化并结合交联前后凝胶含量的结果确定了交联的工艺条件。单独使用过氧化物或多官能团单体均难以使 s PP交联。在 s ...用 DSC对三羟甲基丙烷三甲基丙烯酸酯 (TMPTMA)存在下的间规聚丙烯过氧化物交联进行了研究。根据交联过程中反应热焓的变化并结合交联前后凝胶含量的结果确定了交联的工艺条件。单独使用过氧化物或多官能团单体均难以使 s PP交联。在 s PP/ TMPTMA/ DCP交联体系中 ,多官能团单体聚合后在 s PP基体中形成的中间产物通过捕捉 s PP大分子自由基形成了交联结构。随 DCP和 TMPTMA用量的增加 ,交联程度增大 ;但高温下长时间反应会导致 s PP的降解反应加剧 。展开更多
法国Arkema公司于2019年10月21日宣布,继续创新、发展和改进其用于橡胶交联的Luperox AIR技术,引入了Luperox AIR XL 80和Luperox AIR XL 2两种有机过氧化物。这一最新技术是基于积极的客户互动、市场反馈和广泛的实验室和工厂评估而开...法国Arkema公司于2019年10月21日宣布,继续创新、发展和改进其用于橡胶交联的Luperox AIR技术,引入了Luperox AIR XL 80和Luperox AIR XL 2两种有机过氧化物。这一最新技术是基于积极的客户互动、市场反馈和广泛的实验室和工厂评估而开发的。展开更多
文摘A kind of reactive inorganic polymer-poly(dichloro)phosphazene was prepared by ring-opening polymerization at a high temperature. Then a new conductive polyphosphazene containing pyrrole groups was synthesized by nucleophilic reaction between the inorganic polymer and sodium salts of N-hydroxyethylpyrrole. The chemical structure and properties of the polymers were characterized by 1H, 31P NMR, FTIR, DSC, TGA and GPC. The experimental results indicate that the molecular weights of pyrrole-containing soluble polymer are M n=4.1×10 5, M w=9.2×10 5( M w/ M n=2.24) and the T g is 237 K. A high qulity film was obtained from the soluble polymer through spin-coating method. Using FeCl 3 as oxidiant, the polymer film underwent crosslinking reaction to form conjugated polypyrrole. After the oxidation reaction, the color of polymer film turned into light black from almost transparent and the conductivity was determined to be 1.7×10 -5 S/cm, it is 1×10 5 times greater than that of the original film. The crosslinked polymer shows a high thermal stability.
文摘用 DSC对三羟甲基丙烷三甲基丙烯酸酯 (TMPTMA)存在下的间规聚丙烯过氧化物交联进行了研究。根据交联过程中反应热焓的变化并结合交联前后凝胶含量的结果确定了交联的工艺条件。单独使用过氧化物或多官能团单体均难以使 s PP交联。在 s PP/ TMPTMA/ DCP交联体系中 ,多官能团单体聚合后在 s PP基体中形成的中间产物通过捕捉 s PP大分子自由基形成了交联结构。随 DCP和 TMPTMA用量的增加 ,交联程度增大 ;但高温下长时间反应会导致 s PP的降解反应加剧 。
