Nowadays, many rubber products manufacturers use reclaimed rubber in their formulations in order to reduce the cost of raw materials. Bicycle tires are no exception. The use of odorless reclaimed rubber in the production of bicycle tires can reduce the cost of raw materials and ensure the performance of the tires. The ideal raw material for the tire. So what is the role of odorless tire reclaimed rubber in bicycle tires, and what is the difference between coal tar reclaimed rubber that has been banned, and what should you pay attention to when using it?
At present, people's requirements for bicycles not only stay on the means of transportation, but also require higher and higher requirements on the appearance and use of bicycles, including the environmental protection requirements for the tires of the bicycles. Various softeners, activators, tackifiers, antioxidants, etc. are needed when processing waste tire rubber powder into recycled rubber. The most used one is softener. The current odorless tire reclaimed rubber is a rubber product manufacturer. Tort oil replaces coal tar (coal tar reclaimed rubber has long been banned in the country), processed reclaimed rubber, the product has small specific gravity, small volatile matter, no obvious irritating smell during parking and use, low price; in bicycle tire The use of odorless tire reclaimed rubber in processing can reduce the cost of raw materials and fundamentally eliminate the pungent odor in the tire casing.
Compared with coal tar reclaimed rubber, although the odor is greatly improved, the mechanical properties of odorless reclaimed rubber processed with tall oil as softener are lower than that of coal tar reclaimed rubber, and the Mooney viscosity is large. The tensile strength is slightly smaller, the elongation at break is smaller, and the degree of crosslinking under the same vulcanization condition is less than that of coal tar reclaimed rubber. Therefore, rubber product manufacturers need to properly adjust the formula of bicycle tires to meet relevant standards and specific needs of customers.
Tall oil is acidic. When the bicycle tire formula uses thiazole accelerator, it has obvious delay effect. It is necessary to adjust the bicycle tire vulcanization system appropriately, and add a small amount of thiuram accelerator such as accelerator TT to alleviate the delay of vulcanization of odorless reclaimed rubber. For the problem of high Mooney viscosity, the bicycle tire formula can increase the amount of softener and improve the processing performance of the odorless reclaimed rubber; when using the odorless reclaimed rubber to produce the bicycle tire, the viscosity is reduced, and it is necessary to add an appropriate amount of tackifying resin to improve the process performance.
Because the processing technology of odorless reclaimed rubber is more complicated and the price of compounding agent is higher, the price of odorless reclaimed rubber is higher than that of ordinary reclaimed rubber. However, in the long-term interest, the use of odorless reclaimed rubber to produce bicycle tires can satisfy the growing number of users. The environmental protection needs to win more customers' recognition, and a small amount of cost increase can be exchanged for a larger market and improve economic efficiency.