The original natural rubber inner tube products on the market are still replaced by butyl inner tubes, but the price of butyl rubber itself is quite high, so many rubber products manufacturers will use the appropriate amount of butyl reclaimed rubber in the butyl inner tube formula; The type and amount of reinforcing agent and rubber oil in the butyl inner tube formula of reclaimed rubber have a great influence on the finished product index; then which reinforcing agent and filler are most beneficial to the finished product of butyl inner tube? How to control the ratio of reinforcing agent to rubber oil in the formula of butyl inner tube containing reclaimed rubber?
In the butyl inner tube formulation containing reclaimed rubber, a suitable proportion of reinforcing agent and rubber oil can be added, and the dosage of the butyl reclaimed rubber can be appropriately increased, thereby reducing the raw material cost and improving the economic benefit.
1. The effect of reinforcing agent on the effect of butyl reclaimed rubber in butyl inner tube
Today, the position of carbon black in the rubber products industry is still intact. As the most commonly used reinforcing agent for rubber products, it is naturally inseparable from the production of butyl inner tubes. In theory, carbon black can improve the mechanical strength of butyl inner tube and improve the processing technology in the processing process; in the butyl inner tube formula containing reclaimed rubber, carbon black will exist in the form of aggregates in butyl rubber, in the case of reclaimed rubber. In the inner tube formula, the carbon black aggregates will continue to increase, and the butyl rubber and the butyl reclaimed rubber will be uniformly dispersed in the rubber, but at this time, the carbon black cannot be reinforced in the production of the butyl inner tube.
2. The effect of rubber oil on the effect of butyl reclaimed rubber in butyl inner tube
Rubber oil can improve the fluidity and plasticity of rubber products in the production of rubber products. Paraffin oil is a common rubber oil used in the production of butyl inner tubes. The tensile strength and elongation at break of general rubber compounds will increase with the increase of paraffin oil. After a slight increase and then decrease, the tensile stress and hardness decreased slightly. It can be seen that the influence of paraffin oil on the mechanical properties of the rubber in the butyl inner tube formulation is not particularly large. So why do you need to know the addition ratio of reinforcing agent and rubber oil in the butyl inner tube containing reclaimed rubber?
3. The optimum blending ratio of reinforcing agent and rubber oil in butyl inner tube formula containing reclaimed rubber
As mentioned above, it is not possible to directly improve the mechanical strength of the butyl inner tube containing butyl reclaimed rubber by simply using a reinforcing agent, which needs to be achieved by blending with rubber oil; the reinforcing agent and the rubber oil are The proper ratio can be used to significantly improve the mechanical properties, feel elasticity, tear resistance, flexural strength and fatigue resistance of the butyl inner tube. Generally, when 10 parts of butyl reclaimed rubber is blended in the butyl inner tube, it can be selected. Quickly press out the carbon black, semi-reinforcing carbon black and paraffin oil together, add 18-20 parts of reinforcing agent and rubber oil to improve the processing technology of the rubber compound and the quality of the finished butyl inner tube.