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Computerized PVC formulating for optimized cost/performance
Author(s) -
Brofman C. M.,
Caillault J. J.,
Krauskopf L. G.
Publication year - 1988
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.730100309
Subject(s) - plasticizer , vinyl chloride , process engineering , filler (materials) , materials science , computer science , composite material , polymer , engineering , copolymer
The versatility of poly(vinyl chloride) is largely a result of its capability to be modified by a wide variety of formulating additives, especially plasticizers and fillers. These additives vary widely with respect to their chemical composition, and the concentrations used in PVC, which impart significant effects on costs and performance properties. Computerized formulating programs have begun to replace laboratory testing directed at developing cost effective PVC formulations. A broad data base is required to capitalize on the many cost effective options posed to the PVC formulator. The Marketing Technical Service function of Exxon Chemical Co. utilizes COPPCO, COmputerized Profit/Performance COnsulting, to evaluate the options. The coherent data base contains 34 different plasticizers ranging from 25 to 90 phr, and can accommodate filler effects over a range of zero to 100 phr. COPPCO performs the following functions: cost and performance properties are predicted for specific formulations; lowest cost formula is defined to satisfy a specified set of performance properties; cost and performance properties are predicted for blends of plasticizers in unfilled and filled PVC compositions; performance properties are graphically presented as a function of PHR of plasticizer and plasticizer blends; graphic contours define constant property values as a function of plasticizer and of filler levels; and three dimensional response surfaces reflect the coincidental variation of both plasticizer and filler levels. COPPCO utilizes SAS (Statistical Analysis System) and Telegraph graphics, combined with sophisticated mainframe programs developed specifically to provide the desired output. Unlimited cost and performance options of the PVC formulator can be evaluated in milliseconds, vs. the traditional laboratory exercises which result in limited data after one to two weeks of sample preparation and testing.