摘要
先采用离子液体(1-丁基-3-甲基咪唑六氟磷酸盐BMIM.PF6,IL)处理炭黑,而后进行微波处理得到改性炭黑(m-CB),将m-CB用于增强丁腈橡胶(NBR)。研究了m-CB的结构、混炼胶的硫化特性和补强效果。结果表明,IL可吸附到炭黑表面,而且部分IL强烈吸附于炭黑表面,微波处理之后,IL会发生部分分解;m-CB使混炼胶的硫化延迟;NBR/m-CB硫化胶的断裂伸长率、拉伸和撕裂强度相对于未改性炭黑均有较大提高,而模量和硬度略有下降。通过对硫化胶的交联密度、动态力学分析(DMA)、形态学等研究,探讨了改性炭黑补强橡胶机理。
An ionic liquid （IL）, 1-butyl-3-methyl-imiazolium hexafluorophosphate BMIM. PF6, was employed to modify carbon black （CB） under microwave （MW） irradiation. The modified CB （m-CB） was used to reinforce the nitrile rubber （NBR）. The structure of m-CB, vulcanization characteristics of the NBR/m-CB compounds, mechanical properties of vulcanizates and possible reinforcement mecha- nism were studied. According to the surface area and pore analysis of the m-CB,it is showed that the part of IL can be strongly absorbed onto the CB surface. Part of IL is decomposed into HF. The vulcanization of the compound is retarded by m-CB. Compared with the unmodified CB, the elongation at break, tensile and tear strength of NBR/m-CB vuleanizates are obviously improved, though the modulus and hardness are decreased. According to the results of crosslink density,DMA and the morphology observations, the possible mechanism of reinforcement is proposed.
出处
《弹性体》
CAS
北大核心
2009年第5期1-5,共5页
China Elastomerics
基金
国家自然科学基金资助项目(50873035)
广东省自然科学基金资助(9151008901000137)
关键词
离子液体
炭黑
微波辐射
力学性能
交联密度
ionic liquid
carbon black
microwave irradiation
mechanical properties
crosslink density
