It is an indisputable fact that the use of proper amount of reclaimed rubber in rubber products can reduce raw material costs. However, when many rubber product manufacturers use tire reclaimed rubber, they all make the same mistake: simply adding tire reclaimed rubber to the formulation does not adjust the formula of the rubber product according to the properties of the tire reclaimed rubber product. Is there any difference between the formula of rubber products containing rubber reclaimed rubber and the original formula?
For tire reclaimed rubber (including all reclaimed rubber), there should be such a consensus: tire reclaimed rubber is the rubber resource of used tire recycling and reprocessing. Although it undergoes rigorous crushing, desulfurization, filtration and other processes, the reclaimed rubber product itself still contains certain The amount of raw gums, carbon black, fillers, softeners, etc., also contains a large amount of combined sulfur and vulcanized rubber mesh fragments, although the content of these substances is very high compared to the amount of various compounding agents in the finished tire reclaimed rubber products. Less, but it will still have a certain impact on the processing of tire reclaimed rubber. Then, does the rubber product formulated with recycled rubber really be the same as the original recipe? Of course, the answer is negative, not to mention the different raw materials, different processes produced under the tire reclaimed rubber content of these substances are different, the tire reclaimed rubber product formula must be adjusted in time.
In summary, the difference between the formula of the tire reclaimed rubber product and the original formula is mainly manifested in the following aspects:
1. If the rubber product is vulcanized according to the original formula, the vulcanization speed of the rubber product containing the tire reclaimed rubber is faster, so the tire reclaimed rubber itself contains a certain amount of vulcanizing agent, and this part of the vulcanizing agent reacts with the rubber material, thereby increasing the vulcanization. Velocity, the higher the rubber content, the higher the vulcanization rate of tire reclaimed rubber products, the same amount of tread reclaimed rubber products formula vulcanization speed than the whole tire reclaimed rubber products vulcanized faster. Formulations of rubber products containing tire reclaimed rubber need to add an appropriate amount of vulcanizing agent, and also take in account the vulcanizing agent contained in the tire regenerated rubber itself, and reduce it as appropriate.
2, rubber products manufacturers in the production of rubber products, the commonly used accelerator Accelerator M, Accelerator D, Accelerator DM, DM scorch time and vulcanization rate change slowly, can improve the liquidity of the rubber, processing safety High; tire reclaimed rubber itself contains 1% -2% of the accelerator, this time if the use of accelerator DM as a vulcanization accelerator on the technical performance and performance of rubber products is more favorable.
3. In addition to natural rubber and styrene-butadiene rubber, the highest content of automobile tire components is a large amount of carbon black, or the tire reclaimed rubber is made of natural rubber + styrene butadiene rubber + carbon black + a small amount of complexing agent. Carbon black is also contained in tire reclaimed rubber products that are used for the recycling of scrap tires. Carbon black as a reinforcing agent in the processing of rubber products can significantly increase the tensile strength and hardness of the rubber. The carbon black contained in the tire reclaimed rubber itself is as active as the new carbon black, so it is entirely possible to calculate this part of the carbon black. The total amount of carbon black in rubber formula containing tire reclaimed rubber was replaced by a 1:1 ratio. The tire reclaimed rubber also contains a certain amount of softeners, but due to its low content, it has little effect on the properties of the rubber products. We will not discuss them here.
In short, when a certain amount of tire reclaimed rubber is added to a rubber product, various compounding agents in the rubber product formulation containing the tire reclaimed rubber must be adjusted accordingly. Under normal circumstances, we can calculate the content of the vulcanizing agent in the tire reclaimed rubber. Between 3% and 3.5%, the content of vulcanizing agent is 1%-2%, timely adjust the formula, and the proportion of vulcanizing agent, accelerant, carbon black, filler and softener contained in the tire reclaimed rubber shall be 1:1 Replace the compound in the compound.
The tire reclaimed rubber products produced by Hebei Hongyun Reclaimed Rubber Factory include various products such as tread reclaimed rubber, superfine reclaimed rubber, environmentally friendly reclaimed rubber, odorless reclaimed rubber, high-strength reclaimed rubber, and low-priced ordinary tire reclaimed rubber. Indicators are different, rubber products manufacturers choose the right products according to their needs, design a reasonable formula. Xiao Bian also wanted to say one more thing here: Hongyun can freely design reclaimed rubber formulas and optimize formulas.
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