PVC Stabilizer Current Trends and Uses
Polyvinyl Chloride (PVC) is not a thermally
stable polymer and needs support of Thermal Stabilizers to protect itself from
degrading due to high temperature processing. The additive used for this
function is called PVC Stabilizer or PVC Heat Stabilizer. PVC is processed at
High temperature up to 185 Dc and at such elevated temperatures it releases
Hydrochloric Acid (HCL) and this starts the degradation of the polymer. In
order to scavenge the liberated HCL, Certain additives are used in the PVC
Compounding. These additives are called PVC Stabilizers, PVC Thermal Stabilizers
or PVC Heat Stabilizers.
PVC Stabilizers of various types
These PVC Stabilizers are of different metal
base depending on the end application. The different stabilizers are: Lead Stabilizers,
Calcium Zinc Stabilizers, Tin Stabilizers, Barium Cadmium Stabilizer, Barium
Zinc Stabilizer, Potassium Zinc Stabilizer, Barium Cadmium Zinc Stabilizer etc.
These stabilizers are in Solid as well as Liquid form as per the
requirement. To get the best results,
optimization of the Stabilizer does is essential to establish as excess dose
will increase the compound costing while less than required dose will give poor
results and the PVC compound may have burning effect. Ideally the quality of Stabilizer should be
such that it gives the desired results at minimum possible dose.
Geographically based PVC Stabilisers
The world is moving towards an Eco-Friendly
products and in this process the raw materials by default has to be Non Toxic
in nature. Heavy Metal base stabilizers
such as Lead & Cadmium are gradually being phased out in several countries.
The alternate to these heavy metal grades such as Tin, Calcium, Zinc, Barium etc.
are picking up very fast and all the stabilizer manufacturers are putting in
efforts to improvise the performance ability of these nontoxic metal when put
to use as Stabilizer. Europe, USA, Australia, Japan and other such developed
countries already started moving away from toxic and heavy metal stabilizers
towards light metal and nontoxic lead-free stabilizers in early years of 2000.
India has just started its implantation of Lead Free PVC pipes and the movement
is gaining pace rapidly. Faith
Industries Ltd., offers readymade solutions in Lead free stabilizers for PVC Pipes,
PVC Cables Compounds, PVC Films, PVC Medical Compounds, PVC Leather Cloth, PVC
Door Profiles, PVC Window Profiles, PVC Ceiling Profile, PVC Fittings, CPVC
Pipes & Fittings etc.
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