贮热材料PG-PE二元体系相图的构筑  

Phase Diagram of Binary System PG-PE for Storage Heat Material

作　　者：康艳珍[1] 武克忠[2] 李英品[2] 张超星[2] 刘晓地[2] 

机构地区：[1]吕梁高等专科学校化学系,山西离石033000 [2]河北师范大学化学学院,河北石家庄050016

出　　处：《河北师范大学学报（自然科学版）》2004年第2期159-161,165,共4页Journal of Hebei Normal University：Natural Science

基　　金：河北省自然科学基金资助项目(202139)

摘　　要：多元醇在固固相变时能够可逆地吸收大量的热,因此可与建筑材料复合用作贮热介质,特别是三羟甲基乙烷(PG)和季戊四醇(PE)构成的二元体系,有很宽的适宜于太阳能贮存的温度范围.现利用差示扫描量热及变温红外光谱技术测定了PGPE二元体系相图,确定该相图为完全互溶型,并讨论了结构对多元醇互溶度的影响.相图的构筑为贮热材料的应用提供了理论基础.The solid state transformations in some polyhydric alcohols molecular crystals reversibly absorb large amounts of heat.Some of these material have potential for use in composite building material as heat storing media.In particular,trimethylol ethane(PG) related to pentaerythritol (PE) can be used for heat storage over a rang of temperatures suitable for solar heated building.The experimental phase diagram of binary system PG-PE has been established from room temperature to the liquid state by differential scanning calorimetry(DSC)method and IR spectrometry at various temperatures.This system is discussed on the basis of intermolecular interactions in the quadratic crystal will lower symmetry and the face-centered cubic crystal with higher symmetry.

关 键 词：贮热材料 PG-PE二元体系 相图 分子间作用力 三羟甲基乙烷 季戊四醇 

分 类 号：TB34[一般工业技术—材料科学与工程] O642.3[理学—物理化学]