Organic silicon resin composition, and preparation method and application thereof

The invention relates to an organic silicon resin composition, and a preparation method and application thereof. The organic silicon resin composition is prepared from, by weight, 20 to 100 parts of organopolysiloxane; 20 to 100 parts of an alkoxy-terminated siloxane polymer; 0.1 to 10 parts of a silane coupling agent; and 10 to 70 parts of an organic solvent. The invention also comprises the preparation method of the composition. The preparation method comprises the following steps: mixing the organopolysiloxane, the alkoxy-terminated siloxane polymer, the silane coupling agent and the organic solvent, vacuumizing to -0.1 ~ -0.08 MPa, and stirring to obtain the organic silicon resin composition. The invention also comprises the application of the composition in a coating. The obtained organic silicon resin composition can be used as coating glue to prevent electronic equipment from being corroded by sulfur-containing gas, so that the service life of the electronic equipment can be longer in a worse environme