硫化促进剂O,O′-二辛基二硫代磷酸镨在天然橡胶中的应用  

Application of Curing Accelerator-O,O′-dioctyl-praseodymium dithiophosphate to NR

作　　者：陈朝晖[1] 林新花[1] 刘清亭[1] 王迪珍[1] 

机构地区：[1]华南理工大学材料科学与工程学院,广州510640

出　　处：《特种橡胶制品》2007年第2期14-17,共4页Special Purpose Rubber Products

摘　　要：将自制不含氮元素、硫化过程中不会产生亚硝胺的O,O′-二辛基二硫代磷酸镨(PrDTP-8)用作天然橡胶(NR)的硫化促进剂。结果表明,PrDTP-8对NR具有明显的硫化促进效果;PrDTP-8用量为3.36份,硫化胶的力学性能最佳,即硬度、拉伸强度、撕裂强度、100%定伸应力和300%定伸应力均最大,而拉断伸长率最小。硫化动力学研究表明,含PrDTP-8的混炼胶硫化反应活化能E和频率因子A分别为87.15kJ/mol和2.33E+10。O, O＇-dioctyl-praseodymium dithiophosphate（PrDTP- 8） was used as curing accelerator of NR,and didn＇t contained nitrogen,and didn＇t produced nitrosoamine in the curing process. The resuits showed that PrDTP-8 had a significant curing-accelerate effect;When the dosage was 3.36 phr, the mechanical properties of vuleanizate were very good, including hardness, tensile strength, tear strength,100% modulus and 300% modulus,while the elogation at break was poor. The study showed that the curing reaction activation energy（E） and the frequency A were 87.15kJ/mol and 2.33Eq-10, respectively.

关 键 词：O O'-二辛基二硫代磷酸镨 天然橡胶 硫化动力学 

分 类 号：TQ332[化学工程—橡胶工业]