Ultraviolet crosslinked nylon and preparation method thereof

The invention discloses ultraviolet crosslinked nylon and a preparation method thereof, which relate to crosslinked nylon and a preparation method thereof and are used for solving the problems of high energy consumption, low efficiency, large equipment investment, high cost and poor performance of an obtained product existing in the conventional preparation method. The ultraviolet crosslinked nylon is prepared from nylon, a free radical photoinitiator, a polyfunctional group crosslinking agent, a crosslinking accelerating agent and a compound antioxidant. The method comprises the following steps of: drying nylon, adding the free radical photoinitiator, the polyfunctional group crosslinking agent, the crosslinking accelerating agent and the compound antioxidant, and stirring uniformly to obtain a mixture; and preheating a plastic extruding machine, feeding the mixture, and crosslinking an extruded plasticized nylon material in ultraviolet light radiation crosslinking equipment to obtain ultraviolet crosslinked nylon. The method has the advantages of simple process, easiness for protecting and low cost; and the properties such as thermal stability, creep resistance, stress cracking resistance, mechanical strength and the like of the obtained crosslinked nylon are improved greatly, and the ultraviolet crosslinked nylon can be applied on the aspects of relays, a plurality of plugs, terminal boards, cable jackets and the like.