片状石墨粉/受阻酚小分子-丁腈橡胶共混物动态力学性能

复合材料学报, 2015, 32(5): 1480-1486. doi: 10.13801/j.cnki.fhc1xb.20150113.003

片状石墨粉/受阻酚小分子-丁腈橡胶共混物动态力学性能

张林 ^1, , 左孔成 ^2, , 朱旻昊 ^3, , 蔡振兵 ^4, , 周琰 ^5, , 彭金方 ^6,

1.西南交通大学材料先进技术教育部重点实验室,摩擦学研究所,成都610031

2.西南交通大学材料先进技术教育部重点实验室,摩擦学研究所,成都610031

3.西南交通大学材料先进技术教育部重点实验室,摩擦学研究所,成都610031

4.西南交通大学材料先进技术教育部重点实验室,摩擦学研究所,成都610031

5.西南交通大学材料先进技术教育部重点实验室,摩擦学研究所,成都610031

6.西南交通大学材料先进技术教育部重点实验室,摩擦学研究所,成都610031

关键词：丁腈橡胶 , 杂化阻尼材料 , 片状石墨粉 , 动态力学性能 , 微观形貌

Dynamic mechanic property of flake graphite powder/hindered phenol-nitrile butadiene rubber blends

Keywords： nitrile butadiene rubber , hybrid damping material , flake graphite powder , dynamic mechanic property , microstrueture

以丁腈橡胶(NBR)为基体,添加受阻酚小分子2,2'-亚甲基双-(4-甲基-6-叔丁基苯酚)(AO-2246)构成杂化体系,在体系中添加片状石墨粉(FGP),研究其对共混物动态力学性能的影响,借助DMA、FTIR和SEM等手段,研究了FGP/AO-2246-NBR共混物的动态力学性能.结果表明:将FGP加入AO-2246-NBR共混物中后,损耗角正切值、动态储能模量及损耗模量均随着FGP含量的增加先增加后减小,当FGP含量达到临界值(质量分数10％左右)时,其动态力学性能损耗角切值、动态储能模量及损耗模量才表现出较好的性能.通过红外光谱分析发现,三元共混物的氢键效应不是决定动态力学性能的关键因素,这与FGP本身的特性及形成的微观结构有关.微观形貌的形成是FGP与AO-2246-NBR共混物间相互作用的结果.

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