US 12,264,278 B2
Ultra-low temperature phase change gel
Tao Tang, Shenzhen (CN); and Xiaoshan Fan, Shenzhen (CN)
Assigned to Pregis New Materials (Shenzhen) CO., LTD., Shenzhen (CN)
Filed by Pregis New Materials (Shenzhen) CO., LTD., Shenzhen (CN)
Filed on Apr. 11, 2022, as Appl. No. 17/658,724.
Claims priority of application No. 202110809618.2 (CN), filed on Jul. 17, 2021.
Prior Publication US 2023/0028657 A1, Jan. 26, 2023
Int. Cl. C09K 5/06 (2006.01)
CPC C09K 5/066 (2013.01) 10 Claims
 
1. An ultra-low temperature phase change gel comprising a phase change matrix, a temperature regulator, and a nucleating agent, wherein:
the phase change matrix is a host material for phase change to store and to release cooling capacity;
the temperature regulator regulates a phase change temperature of the phase change matrix;
the nucleating agent reduces a supercooling degree of the phase change matrix;
the phase change matrix comprises a temperature control material and water;
the temperature control material comprises sodium silicate, dipotassium hydrogen phosphate, and aluminum sulfate;
the temperature regulator comprises polyethylene glycol;
the nucleating agent comprises a composite material formed by free radical polymerization of a reaction monomer and a macroinitiator;
the composite material comprises polyacrylic acid grafted with silica hybrid nano particles; and
in the ultra-low temperature phase change gel,
a mass percentage of the phase change matrix is 95% to 97%,
a mass percentage of the temperature regulator is 2% to 4%, and
a mass percentage of the nucleating agent is 1% to 2%.