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Mathematical modeling of rigid poly(vinyl chloride) formulations: Fusion characteristics
Author(s) -
Bambrick C. R.,
Hoegy L. R.,
Ferrari L. P.
Publication year - 1994
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.730160115
Subject(s) - fusion , wax , materials science , rheometer , vinyl chloride , process engineering , composite number , torque , calcium stearate , composite material , chemical engineering , rheology , chemistry , engineering , organic chemistry , raw material , polymer , thermodynamics , physics , philosophy , linguistics , copolymer
A central composite design of experiment as used to study the effect of five additives on the fusion characteristics of a rigid PVC compound. The fusion characteristics evaluated were fusion time, fusion torque, and fusion temperature as measured by a torque rheometer. Mathematical models were constructed for the following five independent formulation variables: impact modifier, paraffin wax, calcium stearate, ester wax, and processing aid. Because of differences in the lubricating properties of these additives, mathematical modeling can help the manufacturers of rigid PVC products to understand and better formulate necessary changes to optimizes the performance requirements of their end use products. The ability to predict the fusion characteristics of a proposed formulation change will help minimize the number of required production evaluations.