多硫醇快速固化剂的合成.pdf

第 24 卷第 1 期 2009 年 1 月 热 固 性 树 脂 　Vol24 　No1 　 J an2009 Thermosetting Resin ·17 · 多硫醇快速固化剂的合成 王安亭 (洛阳理工学院环境与化学工程系 , 河南 洛阳 471023) 摘 　要 : 为促进硫醇固化剂的国产化 , 对其制备方法进行了研究。将聚醚与环氧氯丙烷在四氯化锡催化下加热反 ( ) 应生成中间体 PCE , PCE 与硫氢化钠或硫脲等亲核试剂发生亲核取代反应 , 合成多硫醇固化剂 。该固化剂与环氧 ( ) 树脂按质量比 1 ∶1 混合 , 5 min 快固化胶的钢 - 钢剪强度 常温 18 MPa , 水下浸泡 7 d 后剪切强度为 85 MPa 。 关键词 : 多硫醇 ; 快速固化 ; 环氧固化剂 ; 合成 ( ) 中图分类号 : TQ227 ; TQ314256 　文献标识码 : A 　文章编号 : 1002 - 7432 - 2009 01 - 0017 - 03 Synthesis of polymercaptan used as fast curing agent WAN G An - ting ( Dep artment of Environment Chemistry , L uoy ang University of Science Technology , L uoy ang 4 71023 , China) Abstract :To replace importing polythiol hardener , the synthesis method of polythiol hardener was studiedThe synthesis route was as follows : the polyether reacted with epichlorohydrine at the present of catalyst tin tetrachloride under heating The nucleophilic substitution reaction took place between the resulted intermediate (PCE ) and the nucleophile such as NaSH or thiourea The product polymercaptan was mixed with epoxy resin as the mass ratio of 1 ∶1The steel - steel shear strength of the cured system was up to 18 MPa after curing at room temperature for 5 minutes. The shear strength was 85 MPa after soaking in water for 7days Key words : polymercaptan ; fast curing ; epoxy curing agent ; synthesis 0 　引　言