| 摘要 |
The present invention offers a thermal storage agent, used for air-conditioning systems of buildings as an example, exhibiting excellent thermal storage, thermal conduction and safety, and a manufacturing method thereof. A thermal storage agent (2) in accordance with the present invention contains particulate oily gel bodies (1) prepared by letting an oil absorbent resin absorb, and thus swell with, a thermal storage oil-soluble substance, wherein the oily gel bodies have a unitary volume of not less than 0.01 cm<3> and are in contact with one another without losing the individual surfaces thereof. The empty spaces formed between the particulate oily gel bodies (1) buffer a change in volume of the oil-soluble substance when the oil-soluble substance freezes and melts, further restrain leakage of the oil-soluble substance, and dramatically reduce the chances of the combustion and spread of fire, and thus improve the safety. Besides, with the oil-soluble substance, since the above unitary volume restraints supercooling, and the transformation from liquid phase to solid phase is completed in a shorter period of time, the thermal storage agent (2) is superior in thermal storage efficiency. A manufacturing method in accordance with the present invention can easily produce the excellent thermal storage agent (2) by letting the oil absorbent resin that is prepared by suspension polymerization in a solution containing the oil-soluble substance absorb, and thus swell with, the oil-soluble substance. <IMAGE> |
