▎ 摘　　要

NOVELTY - Vehicle tire cavity coating comprises 3-10 wt.% corundum powder, 3-10 wt.% emery, 2-10 wt.% silicon carbide powder, 3-8 wt.% carbon black, 8-15 wt.% ethyl silicate, 3-7 wt.% lubricant, 0.5-3 wt.% hollow glass beads, 4.1-6.8 wt.% graphene fiber, 1.1-5.5 wt.% modified resin, 8-11 wt.% hydroxypropyl methyl cellulose ether, 0.1-0.5 wt.% coupling agent, 0.1-0.3 wt.% dispersant, 0-1.5 wt.% pigment, 1.2-3.8 wt.% dust remover, and rest is polyurea. USE - Vehicle tire cavity coating. ADVANTAGE - The vehicle tire cavity coating is convenient and cost-effective, has small toxic and side effect and good adhesion ability, effectively improves the tire structure strength, and effectively satisfies the need of spraying operation. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) a vehicle tire cavity coating spraying device, which comprises a load-bearing frame, a spray tank, a load-bearing wheel, a transmission shaft, a spray head, a liquid storage tank, and an electric heating device, spray pump, driving motor and control circuit, the bearing frame is shaped groove-like frame structure, the spraying groove is an arc-shaped groove-like structure, embedded in the bearing frame and connected with the bearing machine, racks are coaxially distributed, the bearing wheels are connected to the upper end surface of the bearing frame through a transmission shaft, and one of the transmission shafts is connected to a driving motor, the driving motor is connected to the side surface of the bearing frame; and (2) a coating spraying method based on a vehicle tire cavity coating spraying device, which involves assembling the load frame, spray tank, load wheel, transmission shaft, spray head, liquid storage tank, electric heating device, spray pump, drive motor and control circuit according to the needs, and passing the load rack, installing the assembled spraying equipment in the designated working position, and connecting the control circuit with the external circuit system, injecting the coating material into the liquid storage tank for standby, separating the drive shaft that is not connected to the drive motor from the load wheel, then wraping the tire to be sprayed outside the load wheel and carrying load positioning through the positioning fixture of the load wheel, and reseting the bearing wheel and drive shaft, and then driving the electric heating device to operate, heating the coating material in the storage tank and the surface of the tire in the spray tank, and reaching temperature the spraying operation needs, the spray pump, pressurizing coating material and spraying onto the tire surface through the spray head, notifying drive motor to rotate the carrier wheel, and the tire speed matches the coating material setting time, so that the tire surface coating is solidified before spraying, turning grooves out at a constant speed to achieve continuous uniform spraying of the tire surface, and removing sprayed tires from the load wheel and new tires to be sprayed are installed to achieve continuous spraying operations.