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纳米介孔mcm--41--m/偶联剂体系对天然橡胶性能的影响

Keywords: 有机高分子材料,天然橡胶,纳米介孔mcm--41--m,偶联改性

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Abstract:

?制备了天然橡胶(nr)/mcm--41--m、nr/偶联剂化学改性纳米介孔mcm--41--m、nr/mcm--41--m/偶联剂复合材料,研究了不同含量的mcm--41--m、不同种类偶联剂对mcm--41--m的改性以及偶联剂的添加方式对nr复合材料性能的影响。结果表明:mcm--41--m在nr中有明显的补强作用,当代替3份炭黑时nr基复合材料的拉伸强度达到最大值,比纯nr提高了12.7%。与mcm--41--m和kh--570直接添加到nr中相比,mcm--41--m经偶联剂kh--570改性使拉伸强度提高了50%。将mcm--41--m用偶联剂kh--570改性后添加到nr中,使nr的玻璃化转变温度升高、玻璃化转变区的损耗角减小、储能模量提高到最大。

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