Since the emergence of tire reclaimed rubber, waste tires have already become "black gold" from "black pollution". The tire reclaimed rubber products produced using scrap tires can be used in the production of rubber products in various occasions to reduce raw material costs. With the increasing demand for tire reclaimed rubber, the quality requirements are also more stringent, and the traditional desulfurization technology is difficult to meet the current market requirements for the quantity and quality of tire reclaimed rubber, and the quality of tire reclaimed rubber is not only strictly controlled from raw materials, but also from the production process. Start with improving tire recycling rubber production efficiency and product quality.
In recent years, the rubber industry has developed rapidly, and the desulfurization technology of tire reclaimed rubber has also been continuously restarted. From the initial water and oil process to high-temperature dynamic desulfurization, to atmospheric desulfurization, microwave desulfurization, and infrared desulfurization, new desulfurization technologies have been introduced to tires. Reclaimed rubber production methods are more energy-efficient, the processing process is more environmentally friendly, the quality of tire reclaimed rubber is more stable, the performance is more superior, and the range of use is also becoming wider.
Initially, China's tire reclaimed rubber is produced using the oil method or the water-oil method. It uses the temperature of hot steam and external pressure to desulfurize. This process produces more waste water and waste gas when reclaiming rubber from tires. It also requires a lot of manpower and material resources. Investment; water-oil method than the oil process desulfurization of a high degree of mechanization, can save a certain amount of manpower and material resources, produced by the tire reclaimed rubber product quality is more stable, but the physical and mechanical properties are not high, the use of a limited range.
The high-temperature dynamic desulfurization tank technology is widely used in China's tire reclaimed rubber industry. After the waste tires are crushed in rubber powder, the tire reclaimed rubber production formula, softener, and activator are placed in a dynamic desulfurization tank for heating, pressure, and water. Desulfurization; high-temperature dynamic desulfurization tank desulfurization time, the production cost is relatively high, the processing safety is low, the quality of the tire reclaimed rubber produced is not easy to control, so this desulfurization process can not be continuous production. Compared with the high-temperature dynamic desulfurization tank desulfurization process, the normal temperature and pressure continuous desulfurization process has higher processing safety, can achieve atmospheric desulfurization, continuous production, and the production of tire reclaimed rubber quality is more stable.
The microwave desulfurization method is a physical desulfurization method. No desulfurizer is added during the desulfurization process, and basically no pollution is caused. In addition, the rubber powder used for desulfurization is 6-8 mm colloidal particles, unlike the conventional desulfurization method requiring 24-30 meshes of the rubber. Powder, therefore, mechanical losses can be greatly reduced, electric energy can also be greatly reduced, microwave desulfurization time is short, generally only 5 min, so production efficiency is high, production costs can be greatly reduced, the tire can be controlled by controlling the intensity of the microwave field during the production process Reclaimed rubber product quality. Therefore, microwave desulfurization is one of the best methods for producing high quality and low cost reclaimed rubber.
Nowadays, rubber product manufacturers are increasingly demanding the performance of tire reclaimed rubber, and new desulfurization technologies are emerging one after another. The advent of another simple and efficient desulfurization process has brought good news to manufacturers of high-quality tire reclaimed rubber. It is the latest infrared desulfurization process. The tire reclaimed rubber infrared desulfurization technology utilizes the heat radiation of infrared waves, which makes the tire particles receive infrared waves to achieve the purpose of desulfurization, and the desulfurization is more sufficient. The new infrared desulfurization process has good desulfurization quality, uniform desulfurization during desulfurization, and can protect tire rubber powder elasticity. The tensile strength of tire reclaimed rubber after production can reach 11Mpa or more; safety is high, and environmental protection standards are met, and the quality of recycled tire rubber produced Stable, better performance. The emergence of infrared desulfurization technology has achieved an overall improvement in the “quality” and “quantity” of tire reclaimed rubber.
In short, the desulfurization technology of tire reclaimed rubber is continuously improving, and more new desulfurization technologies will emerge in the future. The quality of tire reclaimed rubber is inextricably linked with the desulfurization technology used. The continuous progress of desulfurization technology will also promote tire regeneration. The quality of glue is getting better and better, and the scope of use will be even wider. The high-strength, environmentally friendly reclaimed rubber produced by Hebei Hongyun Reclaimed Rubber Factory is produced using German technology and infrared desulfurization technology. The product has a fineness of about 60 mesh, high strength, low specific gravity, no migration, and long-term stability, suitable for all types of high Strong molded rubber products can also be used for the production of export-oriented rubber products to meet the pollution-free, non-radioactive, non-permeable EU environmental standards.
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