1. Nano zinc oxide is an active agent and vulcanizing agent for rubber. Due to the small size effect and large surface effect of nano-materials, the function of nano-zinc oxide in rubber formulations is not only a high-active agent, but also improves wear resistance. It can improve the adhesive force of the rubber frame material, increase the deformation ability and reduce the heat generation and maintain the best performance after aging. It has made it have a broad application space for the role of multifunctional additives.

2.1 Improve rubber processing and vulcanizing agent properties

Nano-zinc oxide has a great influence on the vulcanization properties of the rubber compound. Due to the high specific surface activity, the density of the rubber compound is increased. This is reflected in the increase in the torque of the vulcanization curve and the increase in the 300% tensile strength.

2. 2 Increase the hardness of the rubber particles and improve the tensile characteristics

The hardness of the scrap after using nano-zinc oxide to reduce the weight is basically equivalent to or slightly increased than that of ordinary zinc oxide compound.

After the use of nano-zinc oxide to reduce the weight, the two kinds of rubber materials with different functions of zinc oxide: V-belt buffer rubber and hose outer rubber, its tensile strength is 300%, and the tensile stress has been improved to different degrees. This is because although the amount of nano-zinc oxide is reduced, the particles are extremely fine and surface active, so that whether it is used as a vulcanizing activator in the V-belt buffer rubber or as a vulcanizing agent in the outer rubber of the hose, it can make the rubber The increase in the number of adhesive bonds and the increase in adhesive density, resulting in the mechanical properties of the vulcanizate: that is, the tensile strength of the vulcanizate, the elongation stress has been increased, and the permanent deformation has been correspondingly reduced. The year-on-year surface area has no effect on rubber performance. The core index of nano zinc oxide is the specific surface area, and different specific surface areas have a great impact on the performance of rubber products. The nano zinc oxide produced by SAT NANO has a specific surface area of 50-60m2/g and a nano primary particle size of 30nm. It is used for rubber modification and has obvious effects.

2. 3 Hot air aging performance of rubber compound

From some practical phenomena, it is known that although the amount of zinc oxide in the V-belt buffer rubber is greatly reduced, the hot air aging performance has been improved to a certain extent. Accelerated activation mechanism in the vulcanization system. It can be explained that the zinc dimethyl dithiocarbamate converted into the vulcanization reaction itself is also a kind of accelerator. It has a volatilization promotion effect, which can promote the vulcanization reaction to proceed more fully. Just because there is little or no free sulfur in the rubber, it has an ideal vulcanizate structure and can significantly improve the heat resistance of the vulcanizate. The zinc oxide used as the vulcanizing agent in the outer rubber of the hose is changed to nano-zinc oxide. Although the dosage is small, the particles of nano-zinc oxide are extremely fine and uniformly dispersed. It can give full play to the vulcanization effect in the reaction. Although the amount of nano-zinc oxide is reduced by half, it has a multiplier effect.

3 Conclusion

1.The multifunctional additive effect of nano zinc oxide is very obvious, which is very helpful to improve the service life of rubber products.

2. The nano-zinc oxide compound used has good dispersibility, can make the mixing uniform, and shorten the mixing time to improve work efficiency.

3. The used nano zinc oxide rubber can improve the safety of rubber processing, and can improve the mechanical properties, hot air aging performance and bonding performance of the vulcanizate with the framework material, thereby further improving the internal quality of the product and extending the use Longevity plays a promoting role.

SAT NANO is one of the best supplier of ZnO zinc oxide in China, we can supply 20nm, 30-50nm, 100nm, if you have any interest, please feel free to contact us at admin@satnano.com