Mechanical Properties and Thermooxidative Aging of a Ternary Blend, Pvc/Enr/Nbr, Compared with the Binary Blends of Pvc
作者:
U.S. Ishiaku,
F.S. Lim,
Z.A. Mohd. Ishak,
M.C.Senake Perera,
期刊:
Polymer-Plastics Technology and Engineering
(Taylor Available online 1999)
卷期:
Volume 38,
issue 5
页码: 939-954
ISSN:0360-2559
年代: 1999
DOI:10.1080/03602559909351623
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
In the quest to improve the thermooxidative aging of the poly(vinyl chloride)/epoxidized natural rubber (PVC/ENR) blend, nitrile rubber (NBR) was incorporated into the blend to yield a ternary blend of PVC/ENR/NBR. A Brabender Plasticorder with a mixing attachment was used to perform the melt mixing at 150°C and 50 rpm followed by compression molding. The mechanical properties, dynamic mechanical properties, and thermooxidative aging behavior of the ternary blend were compared with those of the binary blends (i.e., PVC/ENR and PVC/NBR). It was found that the ternary blend exhibits mechanical properties which are superior to those of PVC/ENR. A single glass transition temperature (Tg) obtained from dynamic mechanical analysis coupled with synergism in the modulus and some other mechanical properties indicate that PVC, ENR, and NBR form a single phase (miscible system) in the ternary blend. Di-2-ethyl hexylphthalate (DOP) plasti-cizer improves the aging resistance of the blends generally, whereas the presence of CaCO3as a filler only imparts minor influences on the properties and aging resistance of the blends.
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