⑤High temperature will reduce the tearing strength, elongation and hardness of the rubber, reduce the adhesion strength between the rubber and the cord, and accelerate the aging of the rubber. For tires under high temperature, especially aging tires, when side-slip or roll over obstacles occur, it is easy to tear the crown pattern. Due to the aging of the sidewall rubber, cracks and severe deformation of the sidewall result in the separation of the carcass cord from the rubber. Once the tire is locally exposed to a sudden load, it is likely to cause a puncture.
⑥When the tires of manual hydraulic pallet trucks are corroded by grease, acid-base substances and high temperature for a long time, the physical and chemical properties of the tires will change, the carrying capacity will be greatly reduced, and the tires will also burst easily during use. In addition, tires that have been corroded by oil may peel off the air-sealing layer, a small area of rubber in the tire mouth, and the carcass cord and rubber may separate. Because the patch cannot be compatible with the oil-containing rubber, even if the tire has a small damage wound, the possibility of repair is lost.
