Tyre with inner cavity filled with compound elastomer and preparation method thereof

Abstract

The invention provides a tyre filled with compound elastomer material and a preparation method thereof. The method comprises the steps: filling pretreated rubber into an inner cavity of the tyre; installing a wheel felloe; mixing prepolymer component A and assistant agent B of polyurethane, and injecting the component A and the component B into the inner cavity of the tyre by pressurizing equipment by an air nozzle; filling gaps among rubber granules; thoroughly filling to enable the pressure to achieve the specified requirement of the tyre; keeping the pressure of a sealing air nozzle and curing the polyurethane material to obtain a product. The tyre filled with the compound elastomer material has the advantages of better buffering performance, longer service life, anti-exploding performance, anti-puncture performance, inflation-free performance, maintenance-free performance, high carrying capability and the like of an ordinary solid tyre and is especially suitable for use under special conditions such as mines, quays and the like.

Description

technical field [0001] The invention belongs to the technical field of tires, and in particular relates to a preparation method of a tire whose inner cavity is filled with a composite elastic body. Background technique [0002] With the development of industry, the requirements for tire performance of industrial vehicles and other special-purpose vehicles are also constantly increasing. Traditional pneumatic tires have very good comfort and cushioning properties, and are suitable for high-speed driving, but they have disadvantages such as easy to stab the top burst under high loads, slow air leakage and need to be inflated in time, especially in special conditions such as mines and docks. Quality problems occur; traditional solid tires can withstand higher loads due to their large mass, are puncture-resistant, and will not burst, but have poor cushioning performance and cause great damage to the vehicle, which will increase the workload of vehicle maintenance. , which restr...

AI Technical Summary

Problems solved by technology

Traditional pneumatic tires have very good comfort and cushioning properties, and are suitable for high-speed driving, but they have disadvantages such as easy to stab the top burst under high loads, slow air leakage and need to be inflated in time, especially in special conditions such as mines and docks. Quality problems occur; traditional solid tires can withstand higher loads due to their large mass, are puncture-resistant, and will not burst, but have poor cushioning performance and cause great damage to the vehicle, which will increase the workload of vehicle maintenance. , which restricts its application to a certain extent; solid tires filled with polyurethane microcellular elastomers solve the problems of cushioning and comfort, but have poor bearing capacity, and will cause large deformation of the tire after a certain load. Currently, it is only suitable for tires with small loads. The solid tire filled with polyurethane elastomer has good cushioning and comfort, and can also bear the load of the rubber solid tire, but the material cost and manufacturing cost are high, and the application is also limited

[0003] Patent application number 200510020937.9 "micro-pneumatic filled tire" and patent application number 02134060.9 "lubricated composite elastic pellet filled tire" are composed of inner tube and outer tire made of lubricated composite elastic pellets or micro-inflated diffusion; but lubricated composite elastic The pellets need to be frozen composite molding method, the production method is complicated, the manufacturing cost is high, and the tires of different specifications need to be filled with lubricated composite elastic pellets of different sizes, and the uniform distribution cannot be guaranteed.

[0004] Patent application No. 99109990.7 "Filled tire" uses a soft rubber filling ring to fill part of the inner cavity of the tire, and the rest is filled with compressed air. This patent still needs to be inflated, and the life of the tire will be shortened as the gas leaks

[0005] Patent Application No. 92102360.X "Foam Filling Tire and Its Manufacturing Method" is to insert a ring-shaped high-pressure foam body, and then inject high-pressure and high-temperature gas for molding. The process is complicated, and the injection of high-temperature gas will accelerate the aging of the tire rubber.