At the same time , the conductivity factor and the entropy of phase change of the solidation fatty alcohol were measured separately by using the time - temperature curve and dsc
2.
But conductivity factor of the organic phase change materials is very small , which limits its progress and use , and , becomes " bottleneck problem " of its use wide - rangingly
3.
The result shows the conductivity factor of organic phase change materials was heightened , the temperature of phase change was changeless , and , the entropy of phase change was reduced after adding these additives
4.
Because of the difference of density , the particle with big conductivity factor will subside in the organic phase change materials , so the orginic phase change materials were solided . the best technology was determined , which the solidation fatty alcohol was made by two steps , the solidation temperature is at 80 , and the proportion of fatty alcohol : fatty acid : sodium hydroxide is 96 : 3 : 1
5.
Because of the small conductivity factor of organic phase change materials , all kinds of copper grids , gas sio2 and organic bentonite were added to organic phase change materials in order to heighten its conductivity factor . the conductivity factors were maesured by using time - temperature curve and comparison curve , and , the conductivity factor curves were drawn . at the same time , the entropy of phase change of every system was determined by using dsc
6.
Utilizing method of function extremum , it is proved that there lies minimum coefficient heat transmission in sealed vertical air layer , that is to say there exists the minimum theoretical equivalent conductivity factor . furtherly , the equation of the most excellent thickness of air interlayer is obtained
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