The invention provides a
mussel bionic composite
adhesive and a preparation method thereof, and belongs to the technical field of high-performance adhesives. The
composite material is prepared from 88 parts by
mass of premixed
mother liquor, 3-6 parts by
mass of a
silane coupling agent KH-560 and 4-8 parts by
mass of nano-hydroxyapatite, 3, 4-dihydroxy phenyl
methacrylamide is taken as an adhesion function core of the premixed
mother liquor, is cooperated with 2-ethylhexyl
acrylate and
isobornyl methacrylate, and is compounded with a specific composite
photoinitiator, an
antioxidant 1010 and an
ultraviolet absorbent 328. The preparation method comprises the following steps: preparing premixed
mother liquor under the dark condition of 30 DEG C, primarily dispersing the premixed mother liquor, the
silane coupling agent and the nano-hydroxyapatite under normal pressure, and performing vacuum stirring, dispersing and degassing under-0.05 to-0.08 MPa. The
adhesive has excellent adhesion to inorganic base materials such as hydroxyapatite and
natural stone, has
compressive strength of more than or equal to 22MPa and high elongation at break of 35-55%, has outstanding
weather resistance and stable performance after long-term
ultraviolet aging, and is suitable for the fields of medical bone
repair material fixation, stone adhesion, high-end
composite material forming and the like.