#rubbercuring

Curing is also known as vulcanization. Curing treatment of rubber process includes giving rubber special qualities like strength, elasticity, and moveability. In scientific terms, it refers to the formation of cross-linking connecting polymer chains of the rubber molecules. By this Cross-linking we can stop the chain from moving independently and unwantedly, this lets the material stretch under stress and then return to its original shape when stress is released.

Different methods of Rubber Curing

There are a lot of methods of curing rubber in this industry. Let's discuss deeply:

Sulfur based rubber curing: In this method, Sulphur or Insoluble sulfur is used along with accelerators during the final stage of mixing compounds. Loading sulfur above the level 1.5 PHR can lead to sulfur blooming when the compound is stored over a longer period of time, hence Insoluble sulfur is most of the time recommended.

Sulfur less rubber curing: In this method, other chemicals are used to cross-link polymers like Monochloride, Tellurium, Selenium, Thiuram Accelerator, Polysulphide polymers, p-Quinone Dioxime S, Metallic Oxides, Organic Peroxides, Di-isocyanates etc.

Curing is widely known as vulcanization. Curing treatment of rubber is the process of giving it certain qualities like strength, elasticity. In other terms, it involves the formation of cross-linking between polymer chains of the rubber molecules. Cross-linking prevents the chain from moving independently, letting the material stretch under stress and then return to its original shape when stress is released. 

How to ensure uniform rubber curing

When curing rubber with sulfur, there is a chance of some uncured and over cured zones. To prevent this, We can use a Masterbatch of sulfur, which is also known as Pre dispersed sulfur. Pre-dispersed sulfur, as the name suggests, it is a Mixture of Rubber and Sulfur in the form of pallets. Pre dispersed sulfur ensures uniform curing of the compound. 

Further, there are several benefits of using Pre dispersed sulfur-like

Dust Free & Eco-Friendly

No-fly loss, no loss due to spillages

Easy handling & housekeeping

No health hazards

Excellent dispersion in Rubber Matrices

Low scrap rate

No Static charge generation

Reduced mixing cycle time

Less power consumption

Increase in productivity

Automated feeding is highly effective

Single-stage mixing is possible