▎ 摘　　要

NOVELTY - Preparation method of hydrogenated nitrile rubber involves (i) taking hydrogenated nitrile rubber, natural rubber (NR) rubber, microcrystalline paraffin, graphene oxide, nylon short fiber, zinc oxide, silica, zirconium dioxide, nano-diatom fiber, phenyl solvent, active agent, coupling agent, accelerator, flame retardant, and molecular weight regulator, (ii) putting hydrogenated nitrile rubber, microcrystalline paraffin, graphene oxide, accelerator, flame retardant and molecular weight regulator into a reactor, stirring and mixing, (iii) adding zinc oxide, silicon dioxide, zirconium dioxide, nano-diatom fiber, phenyl solvent, active agent and coupling agent to the reactor on basis of step (ii), stirring and mixing, (iv) mixing NR rubber, nylon short fiber and coupling agent into a mixing drum for mixing, (v) pouring mixture into a single-screw extruder, orienting nylon staple fiber, and (vi) putting the extruded hydrogenated nitrile rubber mixture into preheated mold for vulcanization. USE - Method useful for preparation of hydrogenated nitrile rubber. ADVANTAGE - The method increases the size of the rubber material while the rigidity of the whole hydrogenated nitrile rubber is not influenced, improves the practicability, reduces aging, coking and fracture phenomena caused by UV radiation in the use process of the hydrogenated nitrile rubber, and prolongs the service life of the hydrogenated nitrile rubber. DETAILED DESCRIPTION - Preparation method of hydrogenated nitrile rubber involves (i) taking 20-60 pts. wt. hydrogenated nitrile rubber, 10-30 pts. wt. natural rubber (NR) rubber, 10-15 pts. wt. microcrystalline paraffin, 10-20 pts. wt. graphene oxide, 15-25 pts. wt. nylon short fiber, 5-10 pts. wt. zinc oxide, 4-8 pts. wt. silica, 4-10 pts. wt. zirconium dioxide, 2-5 pts. wt. nano diatom fiber, 5-15 pts. wt. phenyl solvent, 3-5 pts. wt. active agent, 5-7 pts. wt. coupling agent, 2-4 pts. wt. accelerator, 2-5 pts. wt. flame retardant, and 3-10 pts. wt. molecular weight regulator, (ii) putting 30-60 pts. wt. hydrogenated nitrile rubber, 10-15 pts. wt. microcrystalline paraffin, 10-20 pts. wt. graphene oxide, 2-4 pts. wt. accelerator, 2-5 pts. wt. flame retardant and 3-10 pts. wt. molecular weight regulator into a reactor, stirring and mixing at a stirring speed of 500-700 rpm at 35-45 degrees C for 30-35 minutes, (iii) adding 5-10 pts. wt. zinc oxide, 4-8 pts. wt. silicon dioxide, 4-10 pts. wt. zirconium dioxide, 2-5 pts. wt. nano-diatom fiber, 5-15 pts. wt. phenyl solvent, 3-5 pts. wt. active agent and 3-7 pts. wt. coupling agent to the reactor on the basis of step (ii), stirring and mixing at a stirring speed of 600-700 rpm at 40-45 degrees C for 15-25 minutes, (iv) putting 10-30 pts. wt. NR rubber, 15-25 pts. wt. nylon short fiber and 2-7 pts. wt. coupling agent into a mixing drum for mixing 600-700 rpm for 10-15 minutes to obtain a mixed reinforcing agent, adding mixed reinforcing agent to the reactor for stirring and mixing at a stirring speed of 500-600 rpm at 40-45 degrees C for 10-15 minutes, (v) pouring the mixture into a single-screw extruder, orienting the nylon staple fiber along the extrusion direction during the extrusion process, where the compression ratio of the single-screw extruder is set to 2-3.5, the h3 to prevent overheating decomposition is set to 0.07-0.09D, and the heating is 1-2 stages, and (vi) putting the extruded hydrogenated nitrile rubber mixture into the preheated mold for vulcanization under pressure of 170-180 kg at 170-180 degrees C for 10-15 minutes to obtain the product.