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Fusion mechanism in rigid PVC
Author(s) -
Berard Mark T.
Publication year - 2002
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.10370
Subject(s) - carbon black , materials science , natural rubber , composite material , fusion , drop (telecommunication) , modulus , breakup , shear modulus , mixing (physics) , mechanism (biology) , shear (geology) , mechanics , computer science , physics , telecommunications , philosophy , linguistics , quantum mechanics
A classic approach for studying network effects in carbon‐black‐containing rubber was applied to PVC with stabilizer. This approach involves measuring the shear modulus with increasing strain. In carbon‐black‐containing rubber, the modulus drops dramatically at a critical strain level. This is known as the Payne effect and is associated with the breakup of the carbon black network. Rigid PVC that is fused to different levels in a bowl mixer shows exactly the same behavior, and the drop point correlates very well with the fusion peak in the mixing bowl. The relationship between network effects and fusion in PVC is discussed.