US 12,466,953 B2
Rubber material for asphalt roads having both self-stress ice breaking and phase-change snow melting functions and preparation method thereof
Jiao Jin, Changsha (CN); Jianlong Zheng, Changsha (CN); Guoping Qian, Changsha (CN); Shuai Liu, Changsha (CN); Zhuang Wen, Changsha (CN); Ruyi Rao, Changsha (CN); Hao Xu, Changsha (CN); Yalong Zhang, Changsha (CN); and Mengcheng Xiao, Changsha (CN)
Assigned to Changsha University of Science and Technology, Changsha (CN)
Filed by Changsha University of Science and Technology, Changsha (CN)
Filed on Jan. 6, 2025, as Appl. No. 19/010,406.
Claims priority of application No. 202410128838.2 (CN), filed on Jan. 31, 2024.
Prior Publication US 2025/0243364 A1, Jul. 31, 2025
Int. Cl. C08L 83/04 (2006.01); C08K 9/04 (2006.01); C09K 3/18 (2006.01)
CPC C08L 83/04 (2013.01) [C08K 9/04 (2013.01); C09K 3/185 (2013.01)] 10 Claims
 
1. A preparation method for a rubber material for asphalt roads having both self-stress ice breaking and phase-change snow melting functions, wherein the preparation method comprises the following steps:
(1) evenly stirring n-tetradecane with a surfactant to form an oil phase; dissolving polyvinyl alcohol evenly in water to form an aqueous phase; adding the oil phase slowly into the aqueous phase, and adding sodium chloride to form an evenly dispersed oil-in-water core material emulsion;
(2) mixing 3-aminopropyltriethoxysilane, absolute ethanol, water and graphene oxide, and stirring under a heating condition to obtain a modified graphene oxide dispersion liquid;
(3) mixing tetramethyldivinyldisiloxane, absolute ethanol and water, stirring under a heating condition, and then adding hexamethyldisiloxane, tetraethoxysilane and the modified graphene oxide dispersion liquid of step (2) in sequence to obtain a modified graphene oxide-containing prepolymer solution;
(4) mixing the oil-in-water core material emulsion of step (1) and the modified graphene oxide-containing prepolymer solution of step (3), and adding dropwise hydrochloric acid to adjust a pH to 5-6, and polymerizing under a heating condition to obtain modified graphene oxide-vinyl MQ silicone resin composite wall material phase-change microcapsules;
(5) mixing the modified graphene oxide-vinyl MQ silicone resin composite wall material phase-change microcapsules of step (4) and a vinyl silicone oil, and stirring to serve as a component A; mixing a hydrogen-containing silicone oil, an inhibitor and a catalyst, and stirring to serve as a component B; and mixing the component A and the component B, stirring and drying to obtain the rubber material.