摘要
用折光指数法考察了90～120℃下邻仲丁基4，6-二硝基苯酚（DNBP）对苯乙烯热聚合的阻聚效果，并从温度和质量浓度（0．02％～1％）两个方面进行研究。实验结果表明，随着温度的升高，阻聚效果逐渐变弱；随着阻聚剂浓度的增加，阻聚效果逐渐变强；温度对于阻聚过程的影响要强于浓度对其的影响；温度为120℃，DNBP浓度超过0．1％时，可以产生表面意义上的诱导期。
The inhibition and retardation effect of 4,6-dinitro-2-sec-butylphenol（DNBP） on thermal polymerization of styrene were investigated by Abbe refractometer at different temperature （ 90～120℃ ） and concentration of DNBP（0.02%～0.1% ）. Experimental evidence suggested that the effect decreased with the increasing of temperature, and increased with the increasing of concentration of DNBP. The effect of temperature on retardation effect is more sensitive than the DNBP concentration. A typical induction peri- od was observed at 120℃ and 0.1% of DNBP.
出处
《应用化工》
CAS
CSCD
2006年第9期709-711,726,共4页
Applied Chemical Industry
