对叔丁基邻苯二酚对异戊二烯阻聚效果的评价

采用聚合物离析法比较了亚硝酸钠（NaNO2）、对叔丁基邻苯二酚（TBC）、N-甲基吡咯烷酮（NMP）、对苯二酚（HQ）对异戊二烯（IP）的阻聚效果，发现TBC阻聚效果最好。通过封管实验重点考察反应温度、反应时间及阻聚剂TBC的加入量对IP损失率的影响。结果表明，当温度低于95 ℃时，对IP损失率几乎没有影响，可见低温有利于对IP的阻聚；并非阻聚剂含量越高阻聚效果越好，TBC质量分数为0.15%时阻聚效果较好；随着反应时间的增加，IP损失率逐渐增大。

EVALUATION OF THE INHIBITING POLYMERIZATION OF ISOPRENE USING TERT-BUTYL CATECHOL INHIBITOR

Comparison of inhibitors for anti-polymerization of isoprene (IP), such as NaNO2, p-tert-butylcatechol (TBC), N-methyl pyrrolidone (NMP) and paradioxybenzene (HQ), was carried out using polymer segregation process and the results showed that TBC was the best one. Using TBC as inhibitor, the effects of reaction temperature, reaction time and TBC dosage on the IP loss were investigated by tube sealing test. Test results showed that when reaction temperature was less than 95℃, the temperature impact on IP loss was little, indicating low temperature was in favor of inhibiting IP polymerization; the best inhibition performance was obtained with a TBC mass fraction of 0.15%, higher TBC dosage could cause negative effect; the IP loss increased with the increase of reaction time.