摘要
结合过氧化物硫化体系的硫化过程,提出过氧化二苯甲酰(BPO)可以引发环氧化天然橡胶(ENR)与邻苯二甲酸二烯丙酯预聚体(DAP-A)发生相间交联反应,以改善两相之间的相容性,拓宽ENR/DAP-A二元共混材料的有效阻尼温域。分别采用硫磺硫化体系和BPO硫化体系制备的ENR-40(环氧化程度为40%的ENR/DAP-A二元共混材料)进行对比分析,并利用动态力学分析、差示扫描量热分析以及宽频介电谱论证了上述机理。基于以上机理,进一步探究了共混比例和BPO用量对ENR-40/DAP-A二元共混材料阻尼性能的影响,最终制备了一种有效阻尼温域为-33~145℃(tanδmin>0.35)的宽温域高阻尼材料。
Based on the vulcanization process of peroxide curing system,dibenzoyl peroxide（BPO） can result in inter-phase linkages by triggering reaction between epoxidized natural rubber（ENR） and prepolymers of diallyl phthalate（DAP-A）,thus providing an improved compatibility between phases as well as a broadened effective damping temperature range in ENR/DAP-A binary blends. The proposal was demonstrated by DMA,DSC and broadband dielectric spectroscopy（BDRS） of ENR-40/DAP-A binary blends vulcanized by BPO and sulphur,respectively. On the basis of that,different blending ratios and BPO contents were studied to optimize the damping property of ENR-40/DAP-A binary blends and a series of high damping（tanδmin0.35） binary blends with an effective temperature range of 178 ℃ from-33 ℃ to 145 ℃ were obtained.
作者
程波
杨一林
李涛
卢王旬
Bo Cheng;Yilin Yang;Tao Li;Xun Lu(School of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, China)
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2018年第2期129-135,共7页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(21073066)
关键词
环氧化天然橡胶
邻苯二甲酸二烯丙酯预聚体
相间交联
宽温域
阻尼材料
epoxidized natural rubber
prepolymers of diallyl phthalate
cross-linkage between phases
wide temperature range
damping material
