Wet-strength dust-free paper and preparation method thereof

The invention relates to the technical field of textile papermaking, and particularly discloses wet-strength dust-free paper and a preparation method thereof. The top layer and the bottom layer comprise the following raw materials in parts by weight: 50-70 parts of polypropylene fibers; 30 to 50 parts of straw fiber; 10 to 20 parts of hot melting fiber; the middle layer is prepared from the following raw materials in parts by weight: 10 to 20 parts of hot melting fiber; 50-70 parts of fluff pulp fiber; 15 to 25 parts of modified bamboo charcoal fiber; the modified bamboo charcoal fibers are obtained by grafting glycerol onto bamboo charcoal fibers. The preparation method comprises the following steps: S1, forming the bottom layer fiber net, the middle layer fiber net and the top layer fiber net; s2, heating and compacting the bottom-layer fiber net in the step S1; s3, hot air heating is conducted on the fiber net compacted in the S2, and paper is obtained after cooling; s4, glue is applied to the surface of t