The invention provides high-refractive-index transparent
silica gel. The high-refractive-index transparent
silica gel comprises a component A and a component B in a
mass ratio of (0.8-1.2): 1, whereinthe component A comprises the following components in parts by weight: 1-100 parts of phenyl vinyl-terminated
silicone oil; 1-100 parts by weight of phenyl terminal
side chain vinyl
silicone oil; and0.01 to 0.3 part by weight of a
platinum catalyst; the component B comprises the following components in parts by weight: 1-100 parts of phenyl vinyl-terminated
silicone oil; 1-100 parts by weight ofphenyl terminal
side chain vinyl
silicone oil; 1-60 parts by weight of a
biphenyl hydrogen-containing chain
extender; 0-5 parts by weight of a phenyl
hydrogen-containing cross-linking agent; 0.2-10 parts by weight of a phenyl
tackifier; 0-0.4 part by weight of an inhibitor; the phenyl vinyl-terminated
silicone oil has a general formula as shown in formula (I), and the phenyl terminal
side chain vinyl
silicone oil has a general formula shown in formula (II). The high-refractive-index transparent
silica gel provided by the invention adopts specific content components to realize better interaction, so that the product
refractive index is high, and meanwhile, high
refractive index and high temperature stability are achieved, good adhesion performance on various base materials is achieved, andthe high-refractive-index transparent silica gel is suitable for
optical packaging and
potting in various occasions.