PVA: Polyvinyl alcohol, a white powder, is used as an emulsifying stabilizer in polyvinyl acetate emulsion polymerization, in the manufacture of water-soluble adhesives, as a modifier for starch adhesives, and also in the preparation of photosensitive adhesives and benzene-resistant sealants. It is also used as a release agent and dispersant. PVA is a raw material for PVB.
PVAc: Vinyl acetate monomer is produced by reacting ethylene with oxygen and acetic acid in the presence of a palladium catalyst. It is dispersed in water and polymerized to form a milky white polyvinyl acetate emulsion (hereinafter referred to as PVAc). Polyvinyl acetate (PVAc) is also known as "white glue" or "woodworking glue." Polyvinyl acetate (PVAc) dispersions are mainly used in interior decoration. Its advantages include high initial bond strength, ease of use, and good flexibility of the adhesive layer.
PVB: Polyvinyl butyral, a condensation product of polyvinyl alcohol and butyraldehyde. It is a white powder. It is widely used in automotive and building safety glass interlayer films, paints, inks, resistors, batteries, circuit boards, hot melt adhesives, and as a modifier in textile fiber processing, etc.
PVC: Polyvinyl chloride, abbreviated as PVC, is a polymer formed by the polymerization of vinyl chloride monomer (VCM) under the initiation of peroxides, azo compounds, or under the action of light and heat, according to a free radical polymerization mechanism. It has wide applications in building materials, industrial products, daily necessities, flooring, floor tiles, artificial leather, pipes, wires and cables, packaging films, bottles, foaming materials, sealing materials, and fibers.
