CAJ | 학술논문

采用熔融共混技术，在高密度聚乙烯（HDPE）/石蜡定形相变材料中添加普通石墨、氧化膨胀石墨、超声膨胀石墨以及膨胀石墨（EG）4种导热填料制备导热定形相变材料（PCM）。SEM 图表明导热填料可以与 HDPE、石蜡均匀混合。添加导热填料后定形相变材料的渗漏率有增大的趋势，但添加普通石墨和超声膨胀石墨时，渗漏率随导热填料含量的增加而增加，添加氧化膨胀石墨和 EG 时，PCM 的渗漏率随导热填料含量的增加而降低。定形相变材料中添加导热填料时其热导率有显著提高。添加 EG 时，定形相变材料的热导率提高最多，提高率达144.7%。
채용용융공혼기술，재고밀도취을희（HDPE）/석사정형상변재료중첨가보통석묵、양화팽창석묵、초성팽창석묵이급팽창석묵（EG）4충도열전료제비도열정형상변재료（PCM）。SEM 도표명도열전료가이여 HDPE、석사균균혼합。첨가도열전료후정형상변재료적삼루솔유증대적추세，단첨가보통석묵화초성팽창석묵시，삼루솔수도열전료함량적증가이증가，첨가양화팽창석묵화 EG 시，PCM 적삼루솔수도열전료함량적증가이강저。정형상변재료중첨가도열전료시기열도솔유현저제고。첨가 EG 시，정형상변재료적열도솔제고최다，제고솔체144.7%。
Four kinds of thermal conductive fillers,such as graphite,oxide expanded graphite,ultrasonic expanded graphite and expanded graphite were added into HDPE / paraffin shape - stabilized phase -change materials by using melt blending method to fabricate heat - conductive phase - change materials. SEM images show that the heat - conductive fillers are mixed well with the HDPE / paraffin. When graph-ite and ultrasound expanded graphite were added,the leakage rate of phase - change materials was in-creased with the increase of the filler content. When oxide expanded graphite and expanded graphite are added,the leakage rate of phase - change materials was decreased with the increase of the filler content. The thermal conductivity of the PCM is improved significantly with the thermal conductive filler added. When expanded graphite are added,the thermal conductivity rate can reach up to 144. 7% .