Author Archives: Fatemeh Rajabi

Ba-Cd-Zn stabilizers are a combination of salts derived from three key metals, each playing a specific role in preventing PVC degradation: Barium: Enhances thermal stability and prevents the structural degradation of PVC at high temperatures. Zinc: Ensures better initial color and prevents discoloration during the early stages of production. Cadmium: Improves initial color and provides light stability, preventing discoloration when exposed to light. The Key Role of Cadmium: In some applications, a Barium-Zinc combination (without

During the production process of PVC granules, one of the major challenges is bubble formation, which negatively affects the final product’s quality. At high temperatures, PVC undergoes dehydrochlorination, resulting in the release of hydrogen chloride gas (HCl). If this gas is not promptly removed from the process, it can become trapped within the granules, leading to bubble formation. In addition to HCl, other by-products from PVC decomposition, such as plasticizer evaporation, may also contribute to

Polyethylene Wax: Polyethylene wax is a byproduct of high molecular weight polyethylene or HDPE. To produce this wax, HDPE is used as the raw material with a molecular weight typically ranging from 2000 to 4000. Initially, short chains are separated from HDPE through various processes such as chemical breakdown. Subsequently, these shortened chains are transferred to a suitable reactor for purification. The reactor, using heat and a solvent, separates impurities, resulting in polyethylene wax with