ENR改性陶土和填充NR硫化胶结构与性能的研究

采用环氧化天然橡胶(ENR₂₅和ENR₄₅)改性陶土，通过对混炼胶结合胶质量分数、硫化胶表观交联密度、补强性能和力学性能的测定，研究了ENR与陶土的相互作用，ENR的环氧化程度及ENR的用量对陶土和填充NR硫化胶结构与性能的影响。结果表明，ENR可提高陶土与NR 间界面的作用强度，提高混炼胶的结合胶质量分数，增大硫化胶的表观交联密度，改善硫化胶的网络结构，提高陶土填充NR硫化胶的力学性能，其中ENR₂₅对陶土的改性效果优于ENR₄₅。;The clay was modified with ENR₂₅ and ENR₄₅ respectively .The interaction between ENR and clay，and the effects of the epoxidation state and addition level of ENR on the structure and properties of modified clay and clay-filled NR vulcanizate were investigated by determining the bound rubber content in mix，the appearant crosslink density，reinforcement and physical properties of vulcanizate.The results showed that the interfacial interaction between clay and NR was intensified，thebound rubber content in mix and the appearant crosslink density of vulcanizate were increased and the network structure and physical properties of clay-filled NR vulcanizate were improved by using ENR to modify clay