Fe2O3/EPDM新型吸油材料的制备及其吸油性

以三元乙丙橡胶(EPDM)作为基体, Fe₂O₃和焙烧过的Fe₂O₃粉末分别作为填料, 利用熔融共混的方法, 制备出一种新型吸油复合材料, 这类材料可以直接漂浮于含油废水表面使用。研究了填料和交联剂的用量对材料吸油率的影响。结果表明: 交联剂过氧化二异丙苯(DCP)为3wt％, Fe₂O₃为25wt％时, Fe₂O₃/EPDM吸油率达到最大; DCP为2wt%, Fe₂O₃(焙烧)为30wt%时, Fe₂O₃(焙烧)/EPDM吸油率达到最大。选择2组样品中吸油率最高的样品, 对比它们对机油的吸油速率。实验表明, Fe₂O₃(焙烧)/EPDM的吸油速率大于Fe₂O₃/EPDM的吸油速率。Fe₂O₃/EPDM的吸油率比交联EPDM的吸油率提高了227%; Fe₂O₃(焙烧)/EPDM的吸油率比Fe₂O₃/EPDM的吸油率最大可提高64%。分析认为, Fe₂O₃粒子破坏掉一部分高分子链段间的作用力, 并对网络起支撑作用, 为油分子提供了更多的进入通道和空间, 故吸油性得到提高。Fe₂O₃(焙烧)/EPDM的吸油特性要优于Fe₂O₃/EPDM。 

Synthesis and oil absorption of Fe2O3 /EPDM composites

A new kind of material for oil adsorption was prepared by melt blending with EPDM as the matrix and Fe2O3 as the filler. The effects of dicumylperoxide(DCP)and Fe2O3 contents on the oil absorptivity were studied. The results show that the oil absorptivity reaches the highest value for the Fe2O3/EPDM composite with 3 wt% DCP and 25 wt% Fe2O3, while the same is true for Fe2O3(calcination)/EPDM composite with 2 wt% DCP and 30 wt% Fe2O3. Comparing the two samples with the highest oil absorptivity, the oil absorption rate of Fe2O3(calcination)/EPDM composite is higher. The experimental result indicates that the oil absorptivity of Fe2O3/EPDM composite is 227% higher than that of EPDM (crosslinked); the oil absorptivity of Fe2O3(calcination)/EPDM composite is 64% higher than that of Fe2O3/EPDM composite. It is considered that Fe2O3 could reduce some intermolecular interaction of polymer chains to form many channels in the network structure and increase the cubage in network structure. So the oil molecule can come into the network structure easily. The absorbent characteristics of Fe2O3(calcination)/EPDM are better than those of Fe2O3/EPDM.