▎ 摘　　要

NOVELTY - A base coating comprises 45-75 pts. wt. silane oligomer, 0-10 pts. wt. silicone resin, 19-51 pts. wt. solvent, 5-10 pts. wt. graphene oxide, 0.5-1.0 pt. wt. dehydrating agent, 0.2-1.0 pt. wt. amino-silane coupling agent, 2.0-5.0 pts. wt. epoxy-silane coupling agent and 0.01-0.1 pt. wt. catalyst. USE - Base coating for sealing in buildings (claimed). ADVANTAGE - The base coating has fast-film forming property, forms film with dense cross-linked structure, excellent substrate adhesion, water resistance, high temperature resistance and high activity, has quick drying property, and improves the surface energy of the substrate. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the base coating, which involves mixing silane oligomer, silicone resin, solvent, graphene oxide and water into a kettle, stirring the contents under inert gas and/or dry air, adding the silane coupling agents, stirring, adding the remaining ingredients, stirring, sealing and discharging product.