Hydrophilic poly V-belt rubber material, preparation method thereof and poly V-belt

The invention relates to the technical field of rubber, and discloses a hydrophilic poly V-belt sizing material, a preparation method thereof and a poly V-belt, the sizing material comprises the following components in parts by mass: 90-110 parts of ethylene propylene diene monomer, 40-60 parts of precipitated white carbon black, 5-20 parts of natural fiber, an auxiliary agent and a vulcanizing agent; the precipitated white carbon black and the natural fiber are compounded in the basic rubber, so that the hydrophilic performance of the basic rubber is remarkably improved, the water absorption performance of the poly V-belt in a wet environment is remarkably improved, and the friction coefficient and the friction uniformity of the poly V-belt in a dry state in the wet environment are remarkably improved; the volume expansion rate of the multi-wedge belt in a wet state in a wet environment is remarkably reduced, and the problems of slipping and vibration of the multi-wedge belt in the wet state can be solved. 本