In order to reduce production costs, many natural rubber as raw material manufacturers have begun to reclaimed rubber in the formula to take natural rubber and reclaimed rubber (mostly latex reclaimed rubber, reclaimed rubber tires, PP reclaimed rubber) and the way used to produce rubber products, Both to ensure the quality of rubber products, but also can significantly reduce the cost of raw materials. However, the use of natural rubber in combination with reclaimed rubber requires not only the formulation of rubber products to be adjusted, but also the natural rubber needs to be separately plasticized before it is mixed with reclaimed rubber. Why?
In fact, the production of rubber products, not only natural rubber, all the production before use are required by the full mastication, which is because: natural rubber as a highly elastic material, its own flexibility will give rubber products to a certain extent Obstacles, only after plasticization, natural rubber internal molecular structure and molecular weight have some changes, the natural rubber elasticity decreased, only mobility and plasticity, in order to improve the workability of natural rubber.
Reclaimed rubber is made of waste rubber through the process of selecting, crushing, filtering and separating, desulphurization, refining and so on. The internal molecular structure has been severely damaged in the process of processing, the flexibility is reduced, the fluidity and plasticity are inherently more natural than natural Glue is better. Therefore, natural rubber and reclaimed rubber needs to be fully plasticized prior to mixing.
1, After plastic refining, the elasticity of natural rubber is reduced, and the plasticity is increased, which is beneficial to the mixing and even dispersion of the compounding agent during mixing.
2, fully mastication can improve the mobility of natural rubber compounds, easy flow filling, such as product surface patterns or text, will make it more three-dimensional full;
3, improve the adhesion of natural rubber, easy molding operation and shape stability;
4, natural plastic after mastication, can improve the so-called rubber compound in the so-called solubility, in order to facilitate the manufacture of plasticizers, and reduce the viscosity of glue, making it easy to penetrate in the pores of fabric fibers to increase adhesion and improve the product quality.
Only after fully plasticized natural rubber only has good processing properties; reclaimed rubber production process has been desulfurization and other processes, has been fully plasticized, itself has good processing properties. When natural rubber is used together with reclaimed rubber, only natural rubber fully plasticized can be better blended with reclaimed rubber to produce more high-quality rubber products.
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