How to improve the poor aging resistance of solid tire made of natural rubber

Solid tire body is solid, do not need inner tube, air tight layer and curtain line skeleton, mainly used in low speed driving high load vehicles or machinery, such as riot vehicles, armored vehicles, anti-terrorism vehicles, engineering vehicles, forestry machinery and other special vehicles. It mainly includes tread glue and body glue. Natural rubber has high mechanical strength and good elasticity, which is the ideal material for making solid tires. But in the actual production, the price of natural rubber is high and the aging resistance is poor. What measures can be taken to improve these problems? What problems should be paid attention to in the process of use?

1. Basic physical requirements of solid tires

Solid tires have better durability and safety than pneumatic tires, which are mainly used in special vehicles in engineering vehicles, forestry machinery, construction machinery and other fields under high load conditions. Therefore, the rubber material is required to have excellent wear resistance, pressure resistance, high constant elongation stress 2YLYY127YC and hardness, low compression permanent deformation. When natural rubber produces solid tires, reasonable adjustment of rubber product formula or appropriate mixing of other kinds of rubber can further optimize the comprehensive performance of products and better coordinate the relationship between quality and cost.

2.Natural rubber and styrene butadiene rubber are used to produce solid tires

In actual production, natural rubber can be used with styrene butadiene rubber in appropriate proportion to prepare large solid tire tread rubber and body rubber, and further improve the wear resistance, heat resistance and aging resistance of solid tire. When natural rubber/styrene butadiene rubber is used to produce solid tires, sulfur vulcanization is generally used; Use high wear-resistant carbon black to strengthen, and can be used with spray carbon black when necessary; Softening system is suggested to use pine tar and solid gumarone, improve the processing properties of rubber material, improve the mechanical strength of finished products.

3.Natural rubber/styrene-butadiene rubber/tire recycled rubber is used to produce solid tires

When natural rubber/styrene butadiene rubber is used as raw material to produce solid tires, rubber products manufacturers can also add appropriate amount of tire recycled rubber in the formula, especially small solid tire body rubber. The main components of tire recycled rubber are natural rubber, general synthetic rubber (mainly styrene butadiene rubber and butadiene rubber) and carbon black. It has good compatibility with natural rubber and styrene butadiene rubber, and can be used with both in any proportion to effectively reduce the production cost of solid tires.

In actual production, the dosage of tire recycled rubber in solid tires is generally determined according to the performance requirements of finished products and the physical properties of recycled rubber. For every 100 parts of natural rubber/styrene butadiene rubber, about 300 parts of tire recycled rubber can be mixed into the maximum, which can reduce the cost and improve the vulcanization property of rubber material and the aging resistance of finished products. Proper adjustment of the formula of solid tire containing recycled rubber, such as increasing the amount of reinforced carbon black, can further improve the comprehensive index of finished products and extend the service life while reducing the cost.

In the production of solid tires, natural rubber can be used alone, also can be used with styrene butadiene rubber, or a large number of mixed with tire recycled rubber, in improving the performance of solid tires while further reducing the cost of raw materials. When natural rubber and styrene butadiene rubber, or natural rubber/styrene butadiene rubber/tire recycled rubber are used to produce solid tires, rubber tire manufacturers must consider the processing properties of a variety of rubber comprehensively, adjust the rubber mixing process and vulcanization process appropriately, improve product quality and production efficiency, and avoid unnecessary losses.