PVC has a large sales volume, second only to polyethelene. Its high chlorine content provides it with a very high level of combustion resistance for building products, electrical enclosures, and wire and cable insulation. Some of PVC's properties are attributed to unique structures. The polymer precipitates from its monomer and grows into primary particles, which are later the melt flow units. Fusion into larger structures and product strength are controlled by breakdown of the grains into primary particles, by the choice of additives, by the amount of melting (temperature), and by the number of tie molecules (molecular weight).
| Number of Pages : | 20 |
| Published : | 06/01/1997 |
