1、合成橡胶工业第46卷Preparation and properties of butadiene-acrylonitrile-butylacrylateterpolymerSHI Gong-chang,ZHONG Qi-lin,WANG Yong-feng,YANG Hai-long,ZHAO Zhi-chao（Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China）Abstract:Butadiene-acrylonitrile-butyla
2、crylateterpolymer(BNBR)was synthesized by emulsionpolymerization method.The effects of amount of ini-tiator,emulsifier and regulator of relative molecularweight on the emulsion polymerization rate were in-vestigated.And the microstructure and dynamic me-chanical properties were characterized.The res
3、ultsshowed that the polymerization rate increased andthe reaction induction period shortened with in-creasing polymerization temperature.The increasingamount of initiator and emulsifier could increase thereaction rate,while the change in the amount of rela-tive molecular weight regulator had little
4、effect onthe reaction rate.The apparent activation energy ofthe BNBR was 27.97 kJ/mol,and the particle sizedistribution of BNBR latex was uniform.The glasstransition temperature of BNBR was lower than thatof nitrile rubber（NBR）with a difference of about10.BNBR had better dynamic mechanical pro-perti
5、es at low temperature than NBR.Key words:butadiene-acrylonitrile-butylacry-late terpolymer;emulsion polymerization;polyme-rization kinetics;microstructure;particle size distri-bution;dynamic mechanical property国内简讯2023年我国丁二烯市场预测据合成橡胶工业协会网站3月28日报道，进入2023年，国内丁二烯行情大幅走高，市场价格环比增加22.71%，同比增幅达44.76%。2023年丁
6、二烯市场偏紧格局将持续，行情值得期待，同时国内丁二烯市场整体运行区间或将略高于2022年，整体将高位运行。从2023年丁二烯产能释放情况来看，全年或有1 040 kt新产能释放，但不排除部分装置延后投产。同时，本应2022年年底投运的新装置多数延至今年上半年投产。2023年上半年受新产能集中释放影响，丁二烯供应趋紧的利好将逐步消散，市场或呈现高开低走态势。预计下半年丁二烯新装置投产数量有限。作为丁二烯原料的石脑油，2022年受需求增长的影响，石脑油产量增加。据国家统计局数据显示，2022年我国石脑油产量为54 780 kt，比上一年增长10.51%;全年石脑油进口量为9260kt，石脑油表观消费量为63 990 kt，比上一年增加13.21%。2023年，石化行业下游开工率提高，对上游石脑油需求将增加，预计这一局面有望持续到2023年第三季度。到第四季度进入传统消费淡季，下游开工减少，石脑油需求有下滑的风险。2023年新装置不断投产，下游需求有望大幅提高，如果上述产能按时释放，对于丁二烯市场无疑是重大利好。展望2023年，丁二烯自给率上升，进口量将延续缩减的趋势，但国外需求复苏会助力丁二烯出口量进一步提升。104
