Solid tyre

Abstract

The invention belongs to the technical field of tyres and particularly relates to a solid tyre. The solid tyre is in a structure with an outer layer and an inner core, wherein the outer layer is madeof rubber or thermoplastic polyurethane elastomer materials; the inner cover is made of composite materials of foaming particles and CPU (casting polyurethane). The solid tyre saves inflation and is light in weight, resistant to abrasion, high in load and excellent in mechanical performance.

Description

Technical field [0001] The invention belongs to the technical field of tires, and particularly relates to a solid tire. Background technique [0002] Tire refers to a kind of circular elastic product assembled on the bottom of various mechanical equipment and vehicles to facilitate rolling. The tires currently on the market mainly include pneumatic tires and non-pneumatic tires. Among them, due to the damage of external factors, pneumatic tires will have tire blowouts and broken tires. They often need to be inflated, repaired, and replaced, which are likely to cause dangerous accidents. However, solid tires can avoid the shortcomings of pneumatic tires and have attracted more and more attention, especially in the fields of children's vehicles, toy vehicles, and bicycles. [0003] Traditional solid tires are mainly made of rubber and thermoplastic polyurethane materials. Such solid tires have disadvantages such as high weight and poor portability. Therefore, foamed solid tires hav...

AI Technical Summary

Problems solved by technology

[0003] Traditional solid tires are mainly made of rubber and thermoplastic polyurethane materials. This kind of solid tire has the disadvantages of heavy weight and poor portability.

Therefore, foamed solid tires are also subject to extensive research. The method for preparing solid tires from foamed rubber materials has been disclosed in patent CN103707720A. In fact, the chemical foaming agent is mixed into the rubber, and the chemical foaming agent is decomposed when heated during vulcanization molding. A foam structure is formed, but the chemical foaming agent has a large amount of foaming gas, the cell structure is difficult to control, and the prepared tire has poor appearance and poor wear resistance

[0004] Invention patent CN104309411A discloses a thermoplastic polyurethane low-load tire and its molding process. It uses TPU foam particles prepared by physical foaming agent for integral foam molding, and prepares a lightweight and wear-resistant foamed thermoplastic polyurethane tire. , but because the inside of the tire is TPU foam particles, the load capacity of the prepared tire is low, which limits its wide applicability

The same Chinese invention patent CN107199832A discloses a non-pneumatic tire, which is a tire core made of rubber and TPU foam particles, which avoids the problem of poor wear resistance of TPU after foaming, but the same The disadvantage is that the tire core is made of foam material, its load capacity is also poor, and the physical properties of the tire core material are also poor.

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