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Nano SiO2 opens up new research directions for tire manufacturing

April 19,2021.
Nano SiO2 is non-toxic, odorless, non-polluting, has the advantages of high surface energy and strong adsorption capacity. It is a high-quality stabilizer and fusion machine, and has a wide range of applications in the fields of electronics, optics, and biochemical sciences. It is a nano material with great industrial application prospects. Nano silica has the advantages of small particle size, large specific surface area, good biocompatibility, and has the advantages of surface interface effect, small size effect, and quantum size effect of nanomaterials. As a filler, it does not change the process flow, but only replaces the coarse-crystalline SiO2, and the performance indicators of its products will be greatly improved, and the application of nano-SiO2 is far more than that.

However, due to the high surface energy of nano-silica, it is in a thermodynamically unstable state, it is very easy to aggregate into clusters, and it is not easy to fully mix with organics. At the same time, the surface of silica is hydrophilic and oleophobic, and it is difficult to uniformly disperse in organic media. The poor bonding force between them is easy to cause interface defects and reduce the performance of the composite material.

To solve the above-mentioned dispersibility of nano-silica and compatibility with organic matrix, it must be surface modified to weaken the polarity of the silica surface and reduce the energy state of the silica surface to improve the nano-particles. Compatibility with organic matrix.

SAT NANO's in-situ modification method: general chemical modification can effectively reduce the agglomeration of nano-silica, but there is also the problem of nano-silica agglomeration before modification. Therefore, the modification is completed during the preparation of nano-silica to obtain surface-functionalized silica particles. That is, during the initial production of nano SIO2 particles, organic compounds are modified on the surface of the particles to achieve controllable particle size, while giving the nanoparticles some special properties, such as toluene, carbon tetrachloride, coatings, resins, paints, lubricants, Plasticizers and many other organic media have good dispersibility and dispersion stability, and the appearance can reach the level of a true solution. It can also be equipped with special functional groups on the surface according to different application requirements and disperse well in special media.


For tires, the rubber compound with patterns printed on the surface that is in direct contact with the road surface, that is, "tread rubber", has a vital influence on its performance. It can make the tire have traction, buffer the impact and swing during driving, and prevent the cord layer from cutting and puncturing. It is an important reference for the comfort, safety, service life and energy consumption of the car.

Obviously, rubber alone does not have enough strength to complete this series of tasks, and fillers must be used to reinforce it. So far, carbon black is a filler with a reinforcing effect, which can give rubber products excellent tensile strength and tear strength, and also improve the wear resistance and heat resistance of the products. However, carbon black has problems such as high pollution and high energy consumption, and it cannot overcome the "devil's triangle" problem of tires and help tires become "green tires". Therefore, the more environmentally friendly nano-silica SIO2 has become a better choice.

In the field of tire manufacturing, there has always been a "devil's triangle", which means that the wear resistance, safety, and environmental protection and fuel saving of tires cannot be improved at the same time due to their own performance. In other words, they must be sacrificed at the same time. One or two kinds of performance can be achieved at the same time to obtain another performance improvement phenomenon.
The French company Michelin developed the world's first "green tire" filled with a large amount of SIO2, which not only significantly reduces rolling resistance, but also improves wet skid resistance, allowing tires to go out of the "devil's triangle" constraints and pioneered tire research A new direction for

The new rubber added with nano-SiO2 not only has superior mechanical properties, but also can be designed with special characteristics according to needs. The nano-SiO2 in this new material not only has a reinforcing effect, but also exceeds the high-grade rubber products of traditional industries in abrasion resistance and anti-aging performance. In addition, nano-SiO2 modified tire side rubber can also be used to produce colored tires. In the near future, it is expected to realize the colorization of automobile and motorcycle tires.

At present, highly dispersed nano-silica has been used in various tire components, including truck tires, car tires, agricultural tires, etc. The use parts are not limited to tire treads, but are used in belts, sidewalls, and steel wire adhesives. The site is also useful. Driven by market demand, low cost, high dispersion, functionalization and refinement have become the development direction of silica, and more new applications will be discovered in the future.


SAT NANO is one of the best supplier of silica powder in China, we can supply 10-20nm, 50nm, 100nm, 1-3um particle size, if you have any enquiry, please feel free to contact us at admin@satnano.com


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