The invention discloses a hydrophobic photocatalytic
epoxy resin /
carbon fiber composite material and a preparation method thereof. The method comprises the following steps: pretreating a base material; constructing a nano TiO2 /
epoxy composite layer on the surface of the pretreated sample; the method comprises the following steps: respectively preparing a low-concentration KH560 solution and a high-concentration KH560 solution, firstly immersing a sample into the low-concentration KH560 solution for treatment, and then immersing the sample into the high-concentration KH560 solution for treatment to form a gradient concentration layer with the concentration gradually increased from inside to outside; then carrying out
ultraviolet light assisted
grafting treatment; and finally, carrying out curing by adopting an intermittent curing process of segmented heating and interspersed natural cooling. According to the preparation method, KH560 and TiO2 form chemical bonding through gradient concentration design, and the
interface bonding strength and hydrophobic performance are remarkably improved by combining
ultraviolet light treatment and an intermittent curing process. The
surface water contact angle of the prepared
composite material can reach 114 degrees or above, the photocatalytic activity is well kept, and the
composite material can be widely applied to the fields of ocean
engineering,
aerospace,
new energy automobiles and the like.