CAJ | 학술논문

以石蜡乳状液为分散介质，纳米Cu粒子为导热介质，采用相转化乳化法制备了纳米Cu/石蜡复合相变乳状液，研究了纳米Cu粒子对复合相变乳状液的稳定性、流变性、导热性和热循环稳定性的影响。研究结果表明：纳米Cu/石蜡乳状液的密度、粘度和导热系数均随纳米Cu含量的增大而增大，密度变化不太明显，而导热系数则明显提高，当纳米Cu粒子含量为0.05 wt%时，复合相变乳状液的导热系数比纯石蜡乳状液提高了161.96%。由于纳米Cu粒子的添加显著增加了Cu/石蜡乳状液的导热性能，Cu/石蜡乳状液在固-液相变热循环过程中的温度平台表现不明显，但其热循环稳定性很好。
이석사유상액위분산개질，납미Cu입자위도열개질，채용상전화유화법제비료납미Cu/석사복합상변유상액，연구료납미Cu입자대복합상변유상액적은정성、류변성、도열성화열순배은정성적영향。연구결과표명：납미Cu/석사유상액적밀도、점도화도열계수균수납미Cu함량적증대이증대，밀도변화불태명현，이도열계수칙명현제고，당납미Cu입자함량위0.05 wt%시，복합상변유상액적도열계수비순석사유상액제고료161.96%。유우납미Cu입자적첨가현저증가료Cu/석사유상액적도열성능，Cu/석사유상액재고-액상변열순배과정중적온도평태표현불명현，단기열순배은정성흔호。
Copper nanoparticle/paraffin composite emulsions (CPC) was prepared by using phase transition emulsification method, in which the paraffin and copper nanoparticles are used as a dispersion medium and heat medium, respectively. The performances of stability, rheology, thermal conductivity, and thermal cycling stability of CPC are studied. The results show that the density, viscosity and thermal conductivity of CPC are increased with the increase of mass fraction of copper nanoparticles. Meanwhile, the density change is negligible, and the thermal conductivity is increased significantly with a large enhancement of 161.96%with a small mass fraction of 0.05 wt%. Since enhancement of the thermal conductivity, the phase change platform of nano-Cu/paraffin emulsion in the solid-liquid phase is not obvious during thermal cycling, but the thermal cycling stability is very good.