Nitroso silane derivative and application of nitroso silane derivative in preparation of water-based acrylic coating

The invention provides a nitroso silane derivative. The nitroso silane derivative has a structure as shown in a formula (I). The invention also provides a preparation method of the nitroso silane derivative and application of the nitroso silane derivative as a coupling agent. The invention further provides a nitroso silane coupling agent modified hydroxyl acrylic emulsion as well as a preparation method and application thereof. The nitroso silane derivative provided by the invention structurally contains nitroso groups, and has huge potential of being widely applied as a novel silane coupling agent. According to the modified hydroxyl acrylic emulsion, the nitroso silane derivative is added in the emulsion polymerization process to serve as a coupling agent for modification, the coupling agent can generate a nitrogen bubble layer with the damping effect, and therefore the dual damping effect can be achieved by combining a damping layer, and due to the fact that the damping efficiency is improved, the damping e