What is PVC Stabilisers?
What is PVC Stabilisers?
When PVC is heated to 170~180°C, chlorine and hydrogen in the molecules are eliminated and release of hydrogen chloride becomes evident. Once such decomposition starts, unstable structures are formed in the molecule, which further accelerate HCl elimination and decomposition.As PVC is heated to soften during the extrusion or mounding process, prevention of hydrogen chloride elimination due to heat and subsequent decomposition is required. The stabiliser prevents such initial elimination of hydrogen chloride from PVC.
Therefore, use of stabilizers (metal compounds) is essential to prevent the chain reaction of decomposition. They can also impart to the PVC enhanced resistance to daylight, weathering and heat ageing and have an important influence on the physical properties and the cost of a formulation. They are invariably supplied in the form of application – specific blends of which the main constituents are metal soaps, metal salts and organ metallic compounds. The choice of heat stabiliser depends on a number of factors including the technical requirements of the PVC product, regulatory approval requirements and cost.
The majority of tin – Sn – stabilisers are used for rigid wrapping films, roofing and transparent rigid sheets for construction applications. Tin stabilisers are employed for drinking waste applications in some countries where lead has been banned in this application for many years. The major metals contained in stabilisers are lead (Pb), barium (Ba), calcium (Ca), and tin (Sn). The stabilisers are classified into Pb stabilisers, Ba-Zn stabilisers, Ca-Zn stabilisers, and Sn stabilisers. Ba-Zn stabilisers and Ca-Zn stabilisers are used as metallic soaps such as stearates, while Sn stabilisers are used as organic tin (dialkyl tin compounds). Other than metallic soap, Pb stabilisers are used as basic sulphate, basic carbonate, or basic phosphate.
Meet Marketing (India) Pvt. Ltd., is a leading Distributing Company.
PVC Stabilizer Distributors MeetIndia.IN Company Profile & History
Mr. Jagdish Thakkar, the Founder and Managing Director of Meet Marketing (India) Pvt. Ltd. has played a key role in foundation and development of the Company. His reach experience of more than 20 years in PVC Industry has helped the company in throughout its journey. The phenomenal growth of company is due to his vision of providing customers best quality product at competitive prices, with technical support and without any delivery hassle. Visit for more information: http://www.meetindia.in/
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