Latent heat storage member and building material provided with same, microcapsules and thermal storage material using microcapsules
The present invention is to provide a latent heat storage member which is able to more reliably contribute to a daily peak shift of energy consumption, and a building material provided with the latent heat storage member. A latent heat storage member 20 which is formed by using a material including a latent heat storage material such as paraffin and a gelation agent and is used as a building material, includes an outer side surface 20 b arranged on a solar light irradiation side facing the outside, and has a phase change temperature T 1 within a temperature range between a lowest temperature Tsmin and a highest temperature Tsmax of the outer side surface 20 b in the daytime.
1. A microcapsule, comprising:
a thermal storage substance which is subjected to a phase change at a predetermined phase change temperature;
a wall substance including the thermal storage substance; and
a slide-ring molecule introduced into the wall substance.
2. The microcapsule according to claim 1 ,
wherein the slide-ring molecule includes a linear molecule, cyclic molecules performing clathration with respect to the linear molecule, and blocking groups arranged on both terminals of the linear molecule.
3. The microcapsule according to claim 2 ,
wherein the slide-ring molecule is a polyrotaxane.
4. The microcapsule according to claim 2 ,
wherein the wall substance is configured of a polyurea or a polyurethane.
5. The microcapsule according to claim 2 ,
wherein the linear molecule is a polyethylene glycol or a polycaprolactone.
6. The microcapsule according to claim 2 ,
wherein the cyclic molecule is at least one cyclodextrin selected from α-cyclodextrin, β-cyclodextrin, and γ-cyclodextrin.
7. The microcapsule according to claim 2 ,
wherein the cyclic molecule is connected to a polymer chain configuring the wall substance by a urea bond or a urethane bond.
8. The microcapsule according to claim 2 ,
wherein the cyclic molecule includes a hydroxyl group or an amine group.
9. The microcapsule according to claim 1 ,
wherein as the thermal storage substance, an organic material or an inorganic material is used.
10. A thermal storage material, comprising:
a container;
an aqueous inorganic salt solution filled into the container; and
a microcapsule dispersed in the aqueous inorganic salt solution, the microcapsule comprising:
a thermal storage substance which is subjected to a phase change at a predetermined phase change temperature;
a wall substance including the thermal storage substance; and
a slide-ring molecule introduced into the wall substance.