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Increasing filler concentrations in PVC compounds using CPE
Author(s) -
Ventresca Don A.,
Berard Mark T.
Publication year - 1997
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10205
Subject(s) - filler (materials) , materials science , extrusion , natural rubber , polyethylene , composite material , breakup , dispersion (optics) , calcium carbonate , izod impact strength test , psychology , physics , psychoanalysis , optics , ultimate tensile strength
During times of rising resin prices, the PVC processor is forced to optimize his operations in order to reduce manufacturing costs. One option the processor has is to increse the filler concentration in order to reduce formulation costs. Chlorinated polyethylene (CPE), an uncrosslinked rubber impact modifier for rigid PVC applications, allows the processor to significantly increase the filler concentration without suffering loss of impact strength or processing penalties. A mechanism is postulated, which is confirmed by Scanning Transmission Electron Microscopy (STEM), extrusion and impact measurements, that CPE domain breakup and dispersion are synergistic with the addition of calcium carbonate.