天然橡胶基磁流变弹性体的制备及性能研究

发布时间：2018-01-14 18:18

  本文关键词：天然橡胶基磁流变弹性体的制备及性能研究　出处：《南京理工大学》2015年硕士论文　论文类型：学位论文

  更多相关文章： 天然橡胶 羰基铁粉 磁流变 硫化工艺 结构设计

【摘要】：磁流变弹性体(Magnetorheological elastomer,MRE)作为磁流变材料的新的分支,具有模量可控、可逆和响应快等特性,在减振降噪和振动控制领域有着广泛的应用前景。但是目前报道的MRE材料存在物理机械性能差、磁流变效应较低等一些问题,影响其在工程上的应用。针对上述问题,本文以制备出兼具优良的力学性能和磁流变性能的实用型MRE材料为目标,将羰基铁粉填充到天然橡胶中,设计了一种MRE一步固化成型制备系统、MRE静态力学性能测试系统和动态力学性能测试系统;研究了制备工艺、羰基铁粉牌号和羰基铁粉的用量对MRE力学性能和磁流变性能的影响。研究结果表明:胶料的塑炼工艺、混炼工艺和硫化温度等对MRE的性能具有较大的影响,在三种不同硫化温度(128℃、133℃、143℃)中,128℃下羰基铁粉在基体中的链状排列最为明显,磁致模量最高;不同增塑剂用量对MRE的影响不同,16份古马隆用量的硫化胶磁流变性能和物理机械性能最好;羰基铁粉的加入提高了胶料的热稳定性和损耗因子,促进了胶料的硫化,但拉伸性能有所降低,羰基铁粉用量60wt%的MRE磁流变效应最好,拉伸强度达10.56MPa,有较好的物理机械性能和磁流变性能;四种羰基铁粉(EW、SM、SQ、CM)对MRE性能的影响不同,牌号SM的羰基铁粉在基体中链状取向最明显,硫化胶磁流变性能最好。
[Abstract]:As a new branch of magnetorheological elastomer, Magnetorheological elastomer (MREE) has the characteristics of controllable modulus, reversible and fast response. It has a wide application prospect in the field of vibration reduction and vibration control. However, the reported MRE materials have some problems such as poor physical and mechanical properties, low magneto-rheological effect and so on. In view of the above problems, a practical MRE material with excellent mechanical properties and magneto-rheological properties was prepared, and carbonyl iron powder was filled into natural rubber. In this paper, a MRE one-step curing molding system is designed, which includes static mechanical properties testing system and dynamic mechanical properties testing system. The effects of preparation technology, carbonyl iron powder grade and amount of carbonyl iron powder on the mechanical properties and magnetorheological properties of MRE were studied. The mixing process and curing temperature have great influence on the properties of MRE, in three different vulcanization temperatures (128 鈩，

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