论文部分内容阅读
通过添加表面活性剂制备了Cu-H2O和Zr O2-H2O纳米流体,研究了十二烷基苯磺酸钠、十六烷基三甲基溴化铵和辛基苯基聚氧乙烯醚等表面活性剂对Cu-H2O和Zr O2-H2O纳米流体分散稳定性的影响;并利用分子动力学方法计算出不同表面活性剂分子与Cu/Zr O2颗粒表面的相互作用能。结果发现添加表面活性剂可较大程度地提升纳米流体的稳定性,而尤以添加十二烷基苯磺酸钠的效果最为明显,计算结果也显示十二烷基苯磺酸钠分子与Cu/Zr O2间的吸附作用最强。此外,还模拟了SDBS与Cu-H2O纳米流体中Cu颗粒的吸附行为。
Cu-H2O and Zr O2-H2O nanofluids were prepared by adding surfactant, and the surface of sodium dodecyl benzene sulfonate, cetyltrimethylammonium bromide and octyl phenyl polyoxyethylene ether were studied. The effect of active agent on the dispersion stability of Cu-H2O and Zr O2-H2O nanofluids was also investigated. The interaction energies of different surfactants and Cu / Zr O2 particles were calculated by molecular dynamics method. The results showed that the addition of surfactant can greatly enhance the stability of nanofluids, but especially the effect of adding sodium dodecyl benzene sulfonate most obvious, the results also show that sodium dodecyl benzene sulfonate and Cu / Zr O2 adsorption between the strongest. In addition, the adsorption behavior of Cu particles in SDBS and Cu-H2O nanofluids was also simulated.