CAJ | 학술논문

纳米材料在有机相变蓄能材料中的分散稳定性对其整体性能的保持具有决定性作用。本文将具有高导热性的纳米材料（MWNTs、Al2O3、Fe2O3）添加到热导率较低的空调用有机相变材料（质量比为73.7∶26.3的辛酸/肉豆蔻醇）中，制备了纳米复合蓄冷材料；利用测量热导率的高低来间接反映分散稳定性的好坏，研究了分散剂种类、分散剂浓度和超声分散时间对纳米复合有机相变材料分散稳定性的影响。实验证明：分散剂十二烷基苯磺酸钠（SDBS）对纳米复合材料的分散稳定效果最好；当添加的分散剂SDBS与不同纳米材料MWNTs、Al2O3和Fe2O3质量比分别为2∶1、3∶1和3∶1时，所对应的分散稳定性能最好；超声分散时间为90min时纳米复合材料的分散稳定性能最优。为获得性能良好、稳定的纳米有机复合材料提供了新的评价方法和指导。
납미재료재유궤상변축능재료중적분산은정성대기정체성능적보지구유결정성작용。본문장구유고도열성적납미재료（MWNTs、Al2O3、Fe2O3）첨가도열도솔교저적공조용유궤상변재료（질량비위73.7∶26.3적신산/육두구순）중，제비료납미복합축랭재료；이용측량열도솔적고저래간접반영분산은정성적호배，연구료분산제충류、분산제농도화초성분산시간대납미복합유궤상변재료분산은정성적영향。실험증명：분산제십이완기분광산납（SDBS）대납미복합재료적분산은정효과최호；당첨가적분산제SDBS여불동납미재료MWNTs、Al2O3화Fe2O3질량비분별위2∶1、3∶1화3∶1시，소대응적분산은정성능최호；초성분산시간위90min시납미복합재료적분산은정성능최우。위획득성능량호、은정적납미유궤복합재료제공료신적평개방법화지도。
The dispersion stability of nanomaterials plays a decisive role on retaining the good performance of nano-organic composite phase change materials (PCMs),when nanomaterials are used as heat transfer enhancement additive of PCMs. To prepare nano-organic composite PCMs for air-conditioning cool storage,nanomaterials with high thermal conductivity,including MWNTs,Al2O3 and Fe2O3,were respectively added into the organic composite PCMs of caprylic acid/myristyl alcohol (with a mass ratio of 73.7 to 26.3),developed previously in our study. The dispersing stability of nano-organic composite PCMs was analyzed indirectly by measuring their thermal conductivity coefficients. The kinds and concentrations of nano-material and dispersant are key influencing factors, as well as ultrasound dispersing time. The experimental results showed that the SDBS had the best dispersing effect on the composite PCMs,and the dispersing stability of the composite PCMs reached optimum,when the ultrasound dispersing time was 90 min,and mass ratios between the dispersant SDBS and MWNTs,Al2O3,Fe2O3 were 2∶1,3∶1,3∶1,respectively. The new evaluation method and guide to obtain the nano-organic composite PCMs with good and stable performance were proposed in this paper.