Performance of coconut kernel residue oil as a processing oil in carbon black filled natural rubber composites
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
Uva Wellassa University of Sri Lanka
Abstract
Processing oil is aromatic or aliphatic hydrocarbon used in dry rubber compounding to obtain
efficient dispersion of filler in rubber, lower the power consumption during mixing, provides
lubrication between rubber molecules. Incorporation of processing oil improves the physical
properties of natural and synthetic rubber such as elasticity, low temperature performance, and aid
in the dispersion of pigments resulting in improvement of tensile strength and abrasion resistance
and rather they decrease hardness, elongation at break, tensile strength, resilience. Mainly aromatic,
paraffinic and naphthenic oils are used as processing oils in dry rubber compounding. According to
the regulations of European Parliament, use of petroleum based processing oil rich in in polycyclic
aromatic hydrocarbon has been banded since 2009 due to carcinogenic. Therefore, scientists are
switching onto naturally occurring oils because of restriction on use of fossil fuel based processing
oils. An effort was taken to evaluate the performance of the Coconut Kernel Residue Oil (CKRO)
as a processing oil in Carbon Black (CB) filled natural rubber composites.
Methodology
Firstly, the CKRO was characterized with regards to fee fatty acid, moisture, ash and metal ions
). Then CKRO was incorporated in different treatment levels (0, 2, 4, 6, 8 and 10
phr) as processing oil in carbon black (CB) filled natural rubber composites. Both curing and
physico-mechanical properties including tensile strength, tear strength, elongation at break,
abrasion volume loss, compression set, rebound resilience and harness of the vulcanizates
containing different levels of CKRO were compared against the standard vulcanisate which was
prepared by using 6 phr of aromatic oil used in the industry at present and all the tests were carried
out according to the ISO standard test methods.
Description
Keywords
Agriculture, Export Agriculture, Coconut Oil Production, Rubber Technology, Rubber Production