Publication: Preparation and characterization of inner self-healing rubber filled ground tyre rubber tape for puncture proof application
Loading...
Date
2024-06-01
Authors
Mimi Syahira, Masraff
Journal Title
Journal ISSN
Volume Title
Publisher
Abstract
A self-healing natural rubber (NR) based on reversible metal-thiolate ionic
networks was successfuy fabricated. Recycled tire rubber was added to the self-
healing rubber compound with the aim of improving the healing properties of the
rubber tape and promoting the sustainable development of rubber products. Different
types of recycled tyre rubber (rubber shred (RS), rubber dust 30 mesh (RD30) and
rubber dust 40 mesh (RD40)) were assessed in order to achieve optimal content of
recycled tyre rubbers for efficient self-healing performance. The results revealed that
self-healing rubber with 10 phr, RD40 showed 90% recovery from puncture damage
for nail diameter below 3.4 mm. Subsequently, the effect of plasticizer was
investigated to improve the dispersion of RD40 within the self-healing rubber matrix.
The amount of plasticizer was varied at three different levels (3, 6 and 9 phr). It was
found that addition of 9 phr plasticizer enable 100% recovery of puncture damage for
nail diameter below 3.4 mm and 85-95% recovery for nail diameter of 4.0 mm. RD40
was also selectively modified by grafting with acrylic acid which contributed to
additional formation of ionic cluster and enhanced rearrangement and reformation of
reversible metal ioniic bonding between natural rubber and RD40 particles. The results
showed 100% puncture recovery for smaller nail diameter and notorious increased in
healing efficiency up to 90-97% for 4.0 mm nail diameter. This promising result open
path for development of puncture-proof self-healing tyre.