| 摘要 |
PROBLEM TO BE SOLVED: To provide stable heat storage material microcapsules that do not collapse even when exposed to flow, heat history, and to shearing in a pump for a long time. SOLUTION: Provided are microcapsules containing a heat storage material, wherein the weight loss of the solids of the capsule is 40% as measured after being heated at 200 deg.C for 3 hr in air. The heat storage material is desirably an aliphatic hydrocarbon, an ester, or an alcohol. The wall of each microcapsule is desirably made from a urea/formalin resin or a melamine/formalin resin. |
