Fabrication of carboxyl nitrile butadiene rubber composites with high dielectric constant and thermal conductivity using Al2O3@PCPA@GO hybrids
Source abstract
Abstract
Abstract Owing to excellent adhesion and easy process, dopamine has been widely used as an intermediate for adjusting the molecular structure of nanoparticles. However, the high cost of dopamine largely impedes its large-scale applications. Herein, alumina@poly(catechol-polyamine)@graphene oxide (denoted as Al2O3@PCPA@GO) multilayer core-shell hybrids were prepared via poly(catechol-polyamine) (PCPA) modification. The as-prepared hybrids were added into the carboxyl nitrile butadiene rubber (XNBR) latex to produce composites with high thermal conductivity because of the strong interaction between polar groups in Al2O3@PCPA@GO core-shell hybrids and C N groups in XNBR matrix. Finally, the maximum thermal conductivity (0.48 W/mK) was obtained with 30 vol% Al2O3@PCPA@GO/XNBR composite, which was about three times of pure XNBR matrix (0.16 W/mK). Moreover, 30 vol% Al2O3@PCPA@GO composite showed a high dielectric constant (16.84 at 100 Hz) and low dielectric loss tangent (0.45 at 100 Hz). Besides, the 30 vol% Al2O3@PCPA@GO/XNBR composite displayed a high tensile strength of 11.86 MPa, which is an advantage for practical applications. The developed method has a shorter reaction time and lower cost compared with poly(dopamine) coating, suggesting potential applications as thermally conductive materials for electronic equipment.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Dielectric materials and actuators · Ferroelectric and Piezoelectric Materials · Advanced Sensor and Energy Harvesting Materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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