Description
VCM, which is not water-soluble, requires auxiliary additives for uniform dispersion in water. Emulsion polymerization, the traditional method, uses water-soluble initiators such as peroxides. This process can be conducted continuously or in batches, with batch processes requiring approximately 1% emulsifier and continuous processes needing 2.5 to 3.0%. Emulsifiers like alkyl sulfonates or ammonium salts of fatty acids remain in the PVC after drying, resulting in the formation of E-PVC.
Properties and features
PVC emulsion can be processed at relatively low temperatures, which is advantageous for molding and coating, while retaining good thermal stability in its final applications.
PVC emulsion offers good chemical resistance to many acids, bases and other chemical agents.
E-PVC consists of very small particles in the range of 1 to 2 µm. The remaining amount of emulsifiers acts as an external lubricant and also gives the E-PVC good antistatic properties in the final products.
Applications
Construction
Vinyl flooring, wall coverings, electrical ducts and conduits, surface protection films.
Consumer goods
Artificial leather, fashion and accessories, sporting goods, household gloves, floor mats, soft toys.
