The invention discloses an
ultraviolet / anaerobic double-curing
adhesive which comprises components with the following parts by weight: altogether 100 portions of
monomer or
oligomer comprising vinyl or a mixture of both, 0.01 portion to 0.5 portion of inhibitor, 0.1 portion to 10 portions of photo-initiator and an appropriate portion of anaerobic-
adhesive initiator; the anaerobic-
adhesive initiator comprises components with the following weight portions: 0.05 portion to 5 portions of organic
hydrazide, 0.05 portion to 5 portions of
tertiary amine, 0.01 portion to 2 portions of
ascorbic acid, 0 portion to 1 portion of ascorbate, 0.1 portion to 5 portions of
saccharin, 0 portion to 1 portion of
saccharin salt, 0.5 portion to 5 portions of organic salt and 0.5 portion to 10 portions of
organic peroxide. The invention also provides a preparation method of the adhesive, which comprises the steps as follows: the other components, except the
organic peroxide and the photo-initiator, are mutually blended for
dissolution by the conventional method; then the photo-initiator is added and dissolved; and the
organic peroxide is added and mixed evenly at the temperature below 40 DEG C, and finally the adhesive is prepared. The adhesive has not only highly efficient anaerobic curing performance, but also excellent adhesive performance as an
ultraviolet curing adhesive, with wide application prospect.