AO-2246对聚氨酯阻尼及力学性能影响
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摘要
聚氨酯(PU)中添加不同份数小分子AO-2246,研究了AO-2246对阻尼性能和力学性能的影响。结果表明,PU/AO-2246体系的损耗因子-温度(tanδ-T)曲线只有一个转变峰,是热力学相容体系,随着AO-2246添加份数的增多,聚氨酯的最大损耗因子tanδ_(max)及对应峰值温度均随之提高,tanδ最大可达到1.51。添加适量AO-2246会提高聚氨酯的拉断伸长率,但同时会降低其拉伸强度和硬度。
The different ratios of AO-2246 were added to the polyurethane, and the effects on damping and mechanical properties of polyurethane were investigated. The results show that the loss factor-temperature curve of PU/AO-2246 system has only one transition peak, which is a thermodynamic compatible system; that as the amount of AO-2246 increases, the loss factor of polyurethane and the corresponding maximum temperature increase, and tanδ_(max) can reach 1.51; that the elongation at break of polyurethane increases when the proper amount of AO-2246 is added, but its tensile strength and hardness reduce at the same time.
The different ratios of AO-2246 were added to the polyurethane, and the effects on damping and mechanical properties of polyurethane were investigated. The results show that the loss factor-temperature curve of PU/AO-2246 system has only one transition peak, which is a thermodynamic compatible system; that as the amount of AO-2246 increases, the loss factor of polyurethane and the corresponding maximum temperature increase, and tanδ_(max) can reach 1.51; that the elongation at break of polyurethane increases when the proper amount of AO-2246 is added, but its tensile strength and hardness reduce at the same time.
引文
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[2] 姜生, 张慧萍, 晏雄.氯化聚乙烯/AO2246复合材料的阻尼性能和微观形态[J].合成橡胶工业,2010,33(6):464—467.
[3] 刘其霞, 姜生, 晏雄.受阻酚/羧基丁腈橡胶复合材料的结构及动态力学性能[J].复合材料学报,2009,26(4):8—14.
[4] 肖大玲, 赵秀英, 向平,等.AO-80/聚醚性热塑性聚氨酯弹性体复合材料的结构与性能[J].合成橡胶工业,2009,32(1):12—16.
[5] 丁国芳, 樊华, 陈立新,等.CIIR/AO-2246/PF复合材料的结构和阻尼性能研究[J].化工新型材料,2014,42(11): 147—150.
[6] CAO Y, MOU H, SHEN F.Hydrogenated nitrile butadiene rubber and hindered phenol composite. Ⅱ. Characterization of hydrogen bonding[J].Polymer Engineering & Science, 2011,51(1):201—208.