摘要
从氢化丁腈橡胶(HNBR)/氟醚橡胶(PMVE)并用体系的硫化特性、物理性能、动态力学性能及热力学性能等方面对HNBR与PMVE的相容性进行了研究,并从分子结构方面予以分析讨论。实验结果表明,HNBR和PMVE虽然在硫化速度上相差很大,但其并用胶具有较好的物理性能,ML、t90及拉伸强度等与并用比呈线性关系,MH、MH-ML、硬度及100%定伸强度等随PMVE的增加先增大后减小,呈现协同增效效应,表明两种聚合物之间有一定的相互作用,并用体系是机械相容性的。但并用胶的tanδ-T、E"-T和DSC曲线上均有两个玻璃化转变峰,Cole-Cole曲线呈现两个半圆形,说明并用胶在微观结构上是不均匀的。因此,HNBR与PMVE并用胶属机械相容但热力学不相容体系。
The compatibility of hydrogenated nitrile rubber（HNBR） and perfluoromethylvinylether（PMVE） was investigated using vulcanization coefficient, physical properties, Dynamic Mechanical Thermal Analysis （DMTA） and Differential Scanning Caloricity （DSC）. Although the vulcanization rate of PMVE was faster than that of HNBR, the blend had excellent physical properties. ML, t90 and tensile strength were linear with the content of HNBR and MH, MH-ML, hardness and 100% modulus showed synergistic effect when the content of HNBR was 10～30%, indicating that there were so two Tg me interaction between the two polymers which were mechanically compatible. There were peaks in tanδ-T, E″-T and DSC curves of the blend and the Cole-Cole curve of the blend showed two modified semicircles, suggesti the microstructure of the blend was inhomogeneous. In conclusion, the HNBR and PMVE are not thermodynamically miscible but mechanically compatible.
出处
《弹性体》
CAS
2007年第5期5-9,共5页
China Elastomerics
基金
国防科工委"十一五"预研项目(51312040301)
德国朗盛化学(上海)有限公司资助项目
关键词
氢化丁腈橡胶
氟醚橡胶
共混
相容性
hydrogenated nitrile rubber
perfluoromethylvinylether
blend
compatibility
