纳米微粒对多元醇水溶液过冷度和水合性质的影响  

Effect of nanoparticles on supercooling and hydration properties of polyalcohols solutions

作　　者：唐临利[1] 许海峰[1] 郝保同[1] 刘连军[1] 刘宝林[1] 

机构地区：[1]上海理工大学生物系统热科学研究所,上海200093

出　　处：《低温与超导》2012年第8期60-63,68,共5页Cryogenics and Superconductivity

摘　　要：利用差示扫描量热仪(Pyrid-Diamond DSC),研究乙二醇(EG)和丙三醇水溶液加入0.1%、0.5%质量分数,20nm、40nm、60nm粒径的HA纳米微粒后的过冷度、水合性质,分析HA纳米微粒对线性多元醇水溶液这些特性的影响。实验表明,纳米微粒加入后,线性多元醇水溶液过冷度显著降低,并随纳米微粒粒径增大而减小。水合实验的结果表明,HA纳米微粒对多元醇水溶液的水合性质影响显著,与未加入HA纳米微粒的线性多元醇溶液相比,纳米低温保护剂结晶焓降低,结合水含量增大。The differential scanning calorimeter （ Pyrid - Diamond DSC ） was use to study supercooling and hydration proper- ties of EG and Glycerol solutions with different size, different mass fractions of HA nanoparticles. The experiments indicated that the supercooling of polyalcohols solutions significantly reduced. After added the nanoparticles, and with the nano - particle size increasing the supercooling decreased. The results of the hydration experiments indicated that the hydration behaviors could be significantly affected by the nanopartieles. Compared with the solution without the nanopartieles, the solution freezing heat de- creased, and water content of polyalcohols increased.

关 键 词：纳米微粒DSC 过冷度 水合性质 多元醇 

分 类 号：TB383[一般工业技术—材料科学与工程]