聚二甲基硅氧烷
材料科学
粉煤灰
复合材料
乳状液
涂层
海绵
悬挂(拓扑)
吸附
吸水率
化学工程
化学
有机化学
植物
数学
同伦
纯数学
工程类
生物
作者
Mengqi Zhao,Xiang Ma,Yuxi Chao,Dejun Chen,Yinnian Liao
出处
期刊:Polymers
[MDPI AG]
日期:2022-09-07
卷期号:14 (18): 3726-3726
被引量:3
标识
DOI:10.3390/polym14183726
摘要
In this study, magnetic fly ash was prepared with fly ash and nano-magnetic Fe3O4, obtained by co-precipitation. Then, a magnetic fly ash/polydimethylsiloxane (MFA@PDMS) sponge was prepared via simple dip-coating PDMS containing ethanol in magnetic fly ash aqueous suspension and solidifying, whereby Fe3O4 played a vital role in achieving the uniformity of the FA particle coating on the skeletons of the sponge. The presence of the PDMS matrix made the sponge super-hydrophobic with significant lubricating oil absorption capacity; notably, it took only 10 min for the material to adsorb six times its own weight of n-hexane (oil phase). Moreover, the MFA@PDMS sponge demonstrated outstanding recyclability and stability, since no decline in absorption efficiency was observed after more than eight cycles. Furthermore, the stress-strain curves of 20 compression cycles presented good overlap, i.e., the maximum stress was basically unchanged, and the sponge was restored to its original shape, indicating that it had good mechanical properties, elasticity, and fatigue resistance.
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