Rubber material for asphalt roads having both self-stress ice breaking and phase-change snow melting functions and preparation method thereof

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.