摘要
对适用于NEPE体系的中性聚合物键合剂(NPBA)进行了水分散聚合研究。以丙烯腈(AN)、丙烯酸-β-羟乙酯(HEA)为共聚单体,合成了组成及相对分子质量可控的NPBA,并考察了各因素对聚合反应的影响。用乌氏黏度计测定产物的黏均相对分子质量,用乙酰化法测定了产物的羟基含量,元素分析仪分析了产物组成,并用IR对共聚物特征结构进行了表征。研究表明,最佳反应条件为:AN、HEA、聚乙烯醇、β-巯基乙醇、过硫酸钾、水的投料量分别为8、2、0.1、0.847、0.45、100 g,温度60℃,时间2 h,产率为82.0%,黏均相对分子质量为5200,其羟基含量为2.08 mmol/g。
The water dispersion copolymerization of neutral polymeric bonding agent applied in NEPE propellants was studied. Its composition and molecular weight were controllable. Acrylonitrile （AN） and β-hydroxyethyl acrylate （HEA） was used as comonomers. Various factors influencing the copolymerization were investigated. Viscosity-average molecular weight of the products were measured by Ubbelohde viscometer,hydroxyl content of copolymers were measured by acetylation method,compostion of copolymers were analyzed by elemental analysis and the structure of copolymers were characterized by IR. The results showed that the best condition for copolymerization were ： the quality of AN, HEA, polyvinyl alcohol, β-mercaptoethanol, potassium persulfate and water were 8 g,2 g,0.1 g,0.847 g,0.45 g,100 g, respectively; reaction temperature 60 C;reaction time of 2 h. The yield of NPBA was 82. 0%, viscosity-average molecular weight was 5200 and hydroxyl content was 2. 08 mmol/g.
出处
《火炸药学报》
EI
CAS
CSCD
2008年第1期60-63,共4页
Chinese Journal of Explosives & Propellants
关键词
高分子化学
水分散聚合
中性聚合物键合剂
丙烯腈共聚物
氧化还原引发剂
polymer chemistry
water dispersion polymerization
neutral polymeric bonding agent
acrylonitrile copolymer
redox initiator
