Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 99, Issue 5, Pages 2167-2173Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/app.22656
Keywords
poly(vinyl chloride) (PVC); carbon black (CB); fusion property; surface resistivity; mechanical property
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Rigid and conductive poly(vinyl chloride) (PVC)/carbon black (CB) composites were prepared in a Haake torque rheometer. The results illustrate that the fusion torque of the PVC/CB composite is increased as the amount of CB is increased. Both the fusion percolation threshold and the fusion time of PVC/CB composites are decreased when the amount of CB is increased. Two major weight loss stages are observed in the TGA curve of PVC/CB composite. The first thermal degradation onset temperature (T-onset1) of PVC/CB composite is decreased as the amount of CB is increased. Both the first and second weight loss stages (Delta Y-1 and Delta Y-2) of PVC/CB composites are decreased as the amount of CB is increased. The surface resistivity of PVC/CB composite remains almost constant up to 6 parts per hundred unit weight of resin (phr) CB. When the amount of CB in PVC/CB composite is increased from 6 to 15 phr, the surface resistivity of PVC/CB composite is dramatically decreased from 10(10) Omega/sq to 10(4) Omega/sq. Because of the addition of CB, the rigidity of PVC/CB composite is increased and thus the mechanical properties, such as yield strength, tensile strength, and the Young's modulus, are improved.
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