Publication: Thermal and mechanical properties of acrylonitrile-butadiene rubber modified polybenzoxazine as frictional materials
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Issued Date
2015
Resource Type
File Type
application/pdf
ISSN
10139826
Other identifier(s)
2-s2.0-84952304835
Rights Holder(s)
มหาวิทยาลัยศรีนครินทรวิโรฒ
Bibliographic Citation
Key Engineering Materials. Vol 659, (2015), p.511-515
Suggested Citation
Jantaramaha J., Jubsilp C., Rimdusit S. Thermal and mechanical properties of acrylonitrile-butadiene rubber modified polybenzoxazine as frictional materials. Key Engineering Materials. Vol 659, (2015), p.511-515. doi:10.4028/www.scientific.net/KEM.659.511 Retrieved from: https://hdl.handle.net/20.500.14740/6233
Author(s)
Abstract
Frictional composites based on polybenzoxazine (PBA-a) and acrylonitrile-butadiene rubber (NBR) are developed in this study. Mechanical, thermal and tribological properties of the PBA-a/NBR composites at 0, 2, 5, 10 and 15wt% of NBR particle contents are evaluated. Curing behaviors of the NBR-benzoxazine molding compounds are examined by differential scanning calorimetry to show an exothermic peak of about 222°C compared with that of the benzoxazine resin, i.e. 232°C suggesting curing acceleration of the benzoxazine resin due to the presence of the NBR particles. The storage modulus of the NBR-filled PBA - A is observed to systematically decrease from 5.2 GPa of the neat PBA - A to 2.8 GPa with an addition of 15wt% of the rubber particles. Glass transition temperature (Tg) of the composites evaluated by dynamic mechanical analysis increases with increasing of NBR particle contents, i.e.from 172°C for PBA - A to 186°C for PBA-a/15wt% NBR. Furthermore, the friction coefficients of the composites with 2wt% NBR are determined to be 0.603 for static type and 0.528 for kinetic type. Those values are improved from the value of 0.597 and 0.475 for unmodified polybenzoxazine, respectively. Therefore, the obtained outstanding properties, i.e. storage modulus, glass transition temperature and friction coefficient make the polybenzoxazine composites highly attractive to be utilized as friction materials. © (2015) Trans Tech Publications, Switzerland.
Subject(s)
Butadiene
Curing
Differential scanning calorimetry
Elastic moduli
Friction
Friction materials
Glass
Glass transition
Resins
Rubber
Temperature
Acrylonitrile butadiene rubber
Benzoxazine resin
Friction coefficients
Frictional materials
Polybenzoxazine
Rubber particles
Thermal and mechanical properties
Tribological properties
Polymer blends
Curing
Differential scanning calorimetry
Elastic moduli
Friction
Friction materials
Glass
Glass transition
Resins
Rubber
Temperature
Acrylonitrile butadiene rubber
Benzoxazine resin
Friction coefficients
Frictional materials
Polybenzoxazine
Rubber particles
Thermal and mechanical properties
Tribological properties
Polymer blends