摘要
采用齐格勒-纳塔催化剂,在2 L聚合釜中进行1-丁烯的本体聚合,聚合过程中加入成核剂,考察了成核剂种类对聚合性能和聚1-丁烯结晶性能的影响。结果表明:釜内添加成核剂使催化剂活性下降,对聚1-丁烯的相对分子质量造成一定影响;加入成核剂使聚1-丁烯的熔融温度及结晶度均提高,未加成核剂时熔融温度为126.8℃,加入成核剂后熔融温度最高达130.6℃,结晶度由49.0%提高到56.2%;加入酰胺类和磷酸酯盐类成核剂对加快聚1-丁烯晶型转变效果最佳。
Poly（1-butene） was produced with Ziegler-Natta catalyst in a 2 L reaction kettle. The nucleating agent was added in the polymerization, and the effects of the type of nucleating agents on polymerization performance and crystallization properties of poly（1-butene） were studied. The results show that adding nucleating agents in the reaction kettle decreases the catalytic activity and has some influences on the relative molecular mass of poly（1-butene）. The melting temperature and the degree of crystallization increase with the addition of nucleating agents. The melting temperature rises from 126.8 ℃ to 130.6 ℃ and the degree of crystallization goes up from 49.0% to 56.2% before and after adding nucleating agent. The optimum effect of crystal form transformation is obtained when nucleating agents such as amides and phosphoric acid esters are added.
出处
《合成树脂及塑料》
CAS
北大核心
2014年第4期25-28,共4页
China Synthetic Resin and Plastics
关键词
1-丁烯
聚合
成核剂
晶型
1-butene
polymerization
nucleating agent
crystal form
