What is the objective of Rubber compounding

Objective of Rubber Compounding

Custom Rubber Compounding

1. To develop the necessary physical and chemical properties for a finished            product.

2.  To achieve the required properties and process ability at lowest cost.

3. To maintain quality of finished product.

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Rubber Compounder

What is Rubber Compound factory ?

Rubber compounder is the factory that can offer full rubber compound mixing service by

• Formulate a new compound or offer a selection of existing formulation to meet customer application,
• Mix to customer recipe.

What is " Rubber Compound"

Rubber compound  or rubber mixing can simply be described as combining a number of individual ingredients ( rubber and other chemical) into a single rubber compound

Natural rubber Compound 

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Rubber Compound Mixing step

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Mixing Stage-One ( Masterbatch )

In The First-Stage, Non vulcanizing ingredients are raw rubber combine with chemical , filler and oil and mix in internal .The product of the first-stage is Generally called A ". Masterbatch "

Mixing Stage-two (Rubber Compound).

After the first-stage of  mixing, compound has been allowed to cool, Two stage mixing is carried out by vulcanizing adding Agent. Next the rubber band was cut and folded several times by Stock Blender Mixing to ensure Uniform and homogeneous. Website: http://www.siamnavakam.com Email: info@siamnavakam.com

Rubber Compound Development process.

How to develop 

the rubber compound.

1. Set Specific Objective (price, Required Properties etc).
2. Select Base Polymer (NR Blend or Synthetic Rubber or blend it together).
3. Mach or improve formulation from existing data.
4. Select material and Cost Estimate of Compound. 
5. Develop COMPOUNDS Properties in Laboratory to meet desired.
6. Design processability of Compound in Factory.
7. Send the Sample to customer for Testing.
8. Test Sample Product Specification Against

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Rubber compound Ingredients

Rubber compound Ingredients

Rubber Compound

1. Rubber or polymer.

• Natural Rubber  :  STR 20 (SMR20) , RSS#3
• Synthetic Rubber 
• :BR         -Butadien Rubber
• :SBR       -Styrene Butadine Rubber
• :EPDM     -Ethylene-Propylene Diene Monomer
• :NBR       -Acrylonitrile Butadiene Rubber
• :CR         -Chloroprene Rubber

2. Fillers – these are carbon black, clay, or calcium carbonate , help improve rubber product properties and reduce formulation costs. They can increase tensile strength, hardness, and resistance to tear and abrasion

3. Process Aids,  aid in the process of rubber, both in the moulding process and mixing process.

4. Activator – these form chemical complexes with the accelerators, which further activate the curing process.

5. Antidegradents /Antioxidant     – these are added to increase the resistance to attacks of ozone, UV light and oxygen.

6. Accelerator – accelerate the vulcanization of curing by increasing the cure rate.

7. Cure agent – Usually sulfur, but peroxide can also be used.

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