Rubber Introduction in Thailand

In 1882 , was The Beginning of Rubber in Thailand .

"The wealth in agricultural occupations is the wealth of people and also of the national security.”  This quotation belongs to Phraya Ratsadanupradit Mahison Phakdi, who was the introduction of the rubber tree to Thailand

Until now , most rubber plantations are in the southern part of Thailand and are likely to expand further.

First rubber tree in Thailand

This tree, which is located along a road that leads to Kantang, represents the first group of rubber trees that Phraya Ratsadanupradit planted to pioneer Thailand's rubber plantation industry in 1899.

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Rubber Compound formulation : What is PHR ?

Compound unit for Rubber Compounder 

PHR - parts per hundred Rubber 

PHR definition / CR. allacromyms

PHR is unit of measure that all compounder use it .The unit is weight of ingredient of polymer and others. 

Below is the sample how it use in formulation ;

Polymer	100	phr
Filler	50	phr
Activator	3	phr
Antidegradents/Antioxidant	3	phr
Oil	5-25	phr
Cure agent	5-10	phr

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Natural Rubber Compound

Natural Rubber Compound

Natural rubber is used in many applications and products, either alone or in combination with other materials. It  can be blended  with Non-polar Rubber  such as SBR, BR , EPDM and some blend with NBR  and we call it " Natural Rubber Compound"

Natural rubber is used for making:

• O-rings, rubber seals and custom moulded rubber components for:
  » rubber to metal bonded vibration isolators and mounts
  » automotive diaphragms
  » FDA applications for food and beverage seals
• Tires and tubes of automobiles and conveyor belts for industrial

NR Rubber Compound

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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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