Raw Material can be classified as nature rubber and synthetic rubber.
Nature Rubber:Cutting a notch on the rubber tree,and collect the flowing cement, after removing impurities, concreting,
smudging, drying and other processes, then can get the nature rubber material.
Synthetic Rubber:
It is a by-product generated by the petrochemical industry, according to different needs,then making the synthetic
rubber with different physical properties.The usually used are SBR,NBR,EPDM,BR,IIR,CR,FKM
2.The rubber material formulation
The rubber material formulation can be into three basic processes.
1)rubber compounding
In order to meet the variety of rubber plasticity requirements in processes,usually,we do the machinery process
for the raw rubber material,to make sure the raw rubber material can be changed from tough elastic be changed to
soft and malleable.
2)Mixing Process
In order to improve the physical and mechanical properties of rubber products, improve the molding process, reduce
the production cost, various of Rubber compounding ingredients need to adding in the rubber material,such as
fllers,reinforcing agents,accelerator,curing agent,ager,scorch retarder and so on,and must ensure they are uniform in rubber.
3)Molding and Extrusion
Push out the excess air in the raw material by extrusion or molding after mixing process,and complete the required
thickness and sizes , in order to facilitate the molding operation .
3.Vulcanization
The process of converting plastic rubber into elastic rubber is called vulcanization. Vulcanization is one of the most important process of rubber processing. All kinds of rubber products must be vulcanized to obtain the performance.The rubber products without vulcanized is less value and useless,but undercuring and overcuring will degrade the rubber performance. Therefore, the production process must strictly control the curing time, in order to ensure the vulcanized rubber products with the best performance and the most long service life
