羧基丁苯/受阻酚阻尼材料的性能研究

Study on properties of caboxylated styrene-butadiene rubber/hindered phenol damping materials

通过向极性的橡胶基体羧基丁苯(CSBR)中添加受阻酚,制备了一系列羧基丁苯/受阻酚阻尼材料。通过动态力学分析表明,受阻酚与基体CSBR具有较好的相溶性,并且该类材料具有很好的阻尼性能。这种材料中受阻酚与基体橡胶形成了分子间的氢键,在受到交变的机械应力作用下,氢键会断裂而消耗大量的能量,从而具有良好的阻尼性能。这类材料的玻璃化转变温度较高,损耗因子(tanδ)出峰位置都高于室温,这类阻尼材料可以应用于室温附近,解决了橡胶材料只能用作低温阻尼材料使用的问题。

Caboxylated styrene-butadiene rubber （CSBR）/hindered phenol damping materials were prepared by adding hindered phenol to polar rubber matrix CSBR. Dynamic mechanical thermal analysis showed that it had good compatibility between hindered phenol and CSBR, and these materials had good damping properties. Intermolecular hydrogen bonds were formed in this kind of materials. Under alternating mechanical stress, these hydrogen bonds will dissociate and dissipate much energy. So these materials had good damping performances. The glass transition temperature was relatively high and the temperature of maximum of loss tangent（tan~） was higher than room temperature. Such damping materials can be used in the vicinity of room temperature resolving the problem that rubber materials could only be used for low temperature damping.