polyvinyl
chloride is a flexible or rigid material that is chemically nonreactive. PVC has a
broad range of application, from high volume construction related products to simple electric wire insulation and coatings. rigid PVC is easily machined, heat formed, welded,
and even solvent cemented. PVC can
also be machined using standard metal
working tools and finished to close tolerances and finishes without great
difficulty. pVC accepts paints and performs
well under most silk screening processes. PVC resins are normally mixed with other
additives such as impact modifiers and stabilizers,
providing hundreds of pVC based materials with a variety of engineering properties.
there are three broad classifications for
rigid pVC compounds : type I, type II, and CPVC. type II varies from type I due to
greater impact values, but lower chemical
resistance. CPVC has greater high temperature resistance. these material are
considered "unplasticized" because
they are less flexible then the plasticized
formulations. type I, II and CPVC are
normally available in road, sheet, slab,
pipe, tubular bar, fittings and valves.
"plasticized" PVC is available in
sheet, film, fittings, flexible tubing and
pipe. |
