18-08-2010 дата публикации
Номер: CN0101805591A
Автор:
XIAOFA DIAO,
XU HAN,
JINTIAN LI,
WEIHUA LI,
TIANBAO MA,
JINFENG MAO,
DIAO XIAOFA,
HAN XU,
LI JINTIAN,
LI WEIHUA,
MA TIANBAO,
MAO JINFENG
Принадлежит:
The invention relates to an inorganic hydrated salt expanded graphite composite phase-changing heat storage material. In the preparation method thereof, 85-89 mass parts of inorganic hydrated salt sodium acetate trihydrate as a heat storage matrix, 5.5-6.5 mass parts of disodium hydrogenphosphate as a nucleating agent, 2.5-3.5 mass parts of carboxymethyl cellulose as a thickening agent, and 3-4.5 mass parts of expanded graphite is blended in an inorganic hydrated salt mixture as a material with a high thermal conductivity. Due to the use of the expanded graphite, the material not only maintains excellent properties of natural flake graphite such as good thermal conductivity, no toxicity and the like, but also has adsorbability which the natural flake graphite does not have. The invention solves the problems of sub-cooling degree, phase stratification and low thermal conductivity during the heat storage process. The composite phase-changing material has a low sub-cooling degree after the ...
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