| 摘要 |
PURPOSE:To prepare the titled material capable of maintaining the original quantity of the storable thermal energy even after the repetition of use, by adding potassium metaphosphate to a system obtained by adding a nucleation agent and a thickener to a base consisting of sodium sulfate decahydrate. CONSTITUTION:The objective thermal energy storage material can be prepared by adding (A) preferably 0.5-5pts.wt. of a nucleation agent (preferably borax), (B) preferably 3-20pts.wt. of a thickener (e.g. fine silica powder, CMC, etc.) and (C) preferably 0.1-10pts.wt. of potassium metaphosphate to (D) 100pts.wt. of a base consisting of sodium sulfate decahydrate and/or an eutectic mixture of sodium sulfate decahydrate. EFFECT:The crystal growth of dispersed sodium sulfate anhydride can be suppressed almost completely.
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