Organic silicon tackifier as well as preparation method and application thereof

The invention provides an organic silicon tackifier as well as a preparation method and application thereof. The organic silicon tackifier has a general formula as shown in formula (I), wherein (a+b+c) is equal to 1, a is greater than or equal to 0 and less than 1, b is greater than or equal to 0 and less than 1, and c is greater than 0 and less than 1; R1 and R2 are independently selected from one or more of phenyl, 3-glycidyloxypropyl and methyl; Me is methyl, and Vi is vinyl. Compared with the prior art, the organic silicon tackifier provided by the invention comprises groups such as phenyl, vinyl and epoxy. By controlling the ratio of the different groups, the organic silicon tackifier has high refractive index and good tackifying effect; meanwhile, the organic silicon tackifier has good compatibility with different basic materials, so that the organic silicon tackifier is suitable for tackifying te silica gel of different basic materials and particularly applicable to the LED high-refraction packaging si