Where does the rubber industry use carbon black and where does it use silica?
Hits: 1
img
As a rubber reinforcing agent, carbon black has a wide range of applications, and carbon black is used in all black rubber products.
In 1912, people discovered that carbon black has a reinforcing effect on rubber, and since then carbon black has gradually become an indispensable raw material in the rubber industry. At present, raw rubber is the first raw material in the world's rubber industry, and carbon black is the second; in other words, carbon black has become the most consumed rubber compounding agent. The consumption of carbon black generally accounts for 40% to 50% of the consumption of rubber. That is to say, in the rubber formulation, usually 1 part of carbon black is used for every 2 parts of rubber used.
Silica is divided into precipitated silica and fumed silica, which are widely used in rubber products such as tires, tapes, hoses, rubber shoes, wires and cables. Silica and silane coupling agents are also used in tire tread rubber. , It can improve the wear resistance and wet skid resistance of the tire while reducing the rolling resistance of the tire. The tensile strength, tear strength and wear resistance of the rubber compound using silica have been improved, and it is used in transparent and colored rubber products. It has its advantages. With the enhancement of people's environmental awareness, the development of the tire industry and the continuous improvement of the quality of silica, its application range will be further expanded.
Silica has been produced since 1948 and used as a filler in the rubber industry. By the 1980s, about 67% of the world's precipitated silica was used in the rubber industry, of which 45% was used in footwear and 16% in tires. , 6% for other rubber products. Since the French Michelin Company announced in 1991 to vigorously carry out research on "green tires", major tire companies in Europe, the United States and Japan have successively accelerated the pace of research and development. "Green tires" have become the mainstream of tire industry development in the 21st century. Silica can be used in a high proportion or completely replace carbon black as a reinforcing agent to produce "green tires". In 1999, it was a standard practice to use silica in the tread of the original car in Europe, and the amount of silica in the tread of the car's original tire has reached 100,000 tons. Affected by the pressure of fuel tax, in order to reduce fuel consumption, automakers are actively developing "green tires" with low rolling resistance and low fuel consumption.
Non-black rubber products include rubber shoes, balls, toys, etc. There are too many.