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Effects of postchlorination on key product and processing properties of PVC
Author(s) -
Neuman Richard C.
Publication year - 1986
Publication title -
journal of vinyl technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 0193-7197
DOI - 10.1002/vnl.730080403
Subject(s) - chlorinated polyvinyl chloride , compounding , chlorine , combustion , materials science , combustion products , viscosity , process engineering , composite material , polymer science , biochemical engineering , chemistry , organic chemistry , engineering , polyvinyl chloride , metallurgy
The behavior of PVC resins has been shown to change dramatically when postchlorinated from 57 to 70 percent chlorine. Many of these changes are beneficial: heat resistance, thermoformability, and combustion properties are improved to an extent that opens new market opportunities for properly formulated chlorinated PVC (CPVC) materials. Sharply increasing melt viscosity also results from increasing chlorine content, creating the need for compounding and processing expertise differing from that for rigid PVC. The fact that such expertise has been developed, and is constantly being improved, is expanding the use of CPVC.