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首页> 外文期刊>Polimery >Effect of ionic liquids on the selected properties of magnetic composites filled with micro-sized iron oxide (Fe3O4)
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Effect of ionic liquids on the selected properties of magnetic composites filled with micro-sized iron oxide (Fe3O4)

机译：离子液体对填充超细氧化铁（Fe3O4）的磁性复合材料选择性能的影响

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摘要

Rubber blends based on ethylene-propylene (EPM), acrylonitrile-butadiene (NBR) and silicone (MVQ) rubbers containing 60 phr micro-sized iron oxide Fe3O4 were prepared. The effect of the addition of an ionic liquid selected from the group of alkylammonium salts on the rheometric properties, crosslinking density and mechanical strength of vulcanizates was studied. It was found that the ionic liquid additive increased the dispersion degree of magnetite particles in the elastomer, which leads to an increase in torque during the vulcanization and reduces the cure time. The produced vulcanizates showed higher crosslinking density than the composites filled with micro-sized magnetite Fe3O4 alone. Also, an improvement of mechanical properties of the vulcanizates with ionic liquid additives was observed, namely an increase in the stress at 100 % elongation and tensile strength. This indicates that the addition of ionic liquid results in an increased activity of the filler particles, which, due to their better dispersion, form their own, spacial network interpenetrating the elastomer network and influencing the material strength.
机译：制备了基于乙烯-丙烯（EPM），丙烯腈-丁二烯（NBR）和硅橡胶（MVQ）的橡胶共混物，其中包含60 phr微米级氧化铁Fe3O4。研究了添加选自烷基铵盐类离子液体对硫化橡胶的流变性能，交联密度和机械强度的影响。已发现，离子液体添加剂增加了磁铁矿颗粒在弹性体中的分散度，这导致了硫化过程中扭矩的增加并缩短了固化时间。所产生的硫化橡胶显示出比仅填充有微型磁铁矿Fe3O4的复合材料更高的交联密度。另外，观察到具有离子液体添加剂的硫化橡胶的机械性能得到改善，即在100％伸长率和拉伸强度下的应力增加。这表明离子液体的添加导致填料颗粒的活性增加，由于它们的更好的分散性，形成了自己的空间网络，该网络渗透了弹性体网络并影响了材料强度。

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