Weathering of Polyvinyl Chloride

Effect of the environment on the durability of plastic-based materials

“…A loss in tensile strength indicates that outdoor weathering caused chemical degradation. An increase in the modulus resulting from the loss of plasticizer ( [34], [35]) was also found by the author [5]. The mechanical property of thermoplastics most subject to deterioration is the elongation at break, which is considered the most meaningful index of weatherability ( [35], [36]).…”

Weathering of Poly(vinyl Chloride). Effect of Composition.

“…The mixing procedures were essentially those followed in the previous investigation (8). Compositions were mixed on hot rolls and press-molded to test sheets 0.030 inch thick, except where noted.…”

“…A group of 15 reputedly primary plasticizers for poly-(vinyl chloride) were investigated in natural, white, and black formulations (Table II). Some data on laboratoryaccelerated aging have been presented for this series (8), but this is the first time that natural weathering has been reported.…”

“…Serviceable outdoor compositions are possible through the judicious choice of stabilizers and pigments (8). The series of colored poly(vinyl chloride) coatings used on the two new types of outdoor telephone wire known as B Urban and B Rural Wire are practical applications of these principles (20).…”

Weathering of plastics

“…The arid climate of Arizona with its daily temperature fluctuation averaging 35°F may have a different effect on a particular property of a given plastic from that of the warm, humid climate of southern Florida. Vinyls, for example, are known to fail more rapidly when exposed in Arizona than in Florida (1,2 ) . Most of the literature devoted to exposure testing is filled with tabulated data of property changes following specific periods of exposure.…”