Fabrication, proposed model and simulation predictions on thermally conductive hybrid cyanate ester composites with boron nitride fillers. (April 2018)

• Record Type: Journal Article
• Authors: Li, Yang; Xu, Genjiu; Guo, Yongqiang; Ma, Tengbo; Zhong, Xiao; Zhang, Qiuyu; Gu, Junwei
• Is Part Of: Composites. Volume 107(2018)
• Page Start: 570
• Page End: 578
• Publication Date: 2018-04
• Subjects: A. Polymer-matrix composites (PMCs) -- B. Thermal properties -- D. Mechanical testing -- E. Casting; Composite materials -- Periodicals; Manufacturing processes -- Periodicals; Composite materials; Manufacturing processes; Periodicals; 620.11805
• DOI: 10.1016/j.compositesa.2018.02.006
• Languages: English
• ISSNs: 1359-835X

Abstract

Abstract: DCPDCE/BADCy hybrid resin and BN fillers were performed to fabricate the thermally conductive BN/DCPDCE/BADCy composites. When the molar ratio of DCPDCE/BADCy was 0.4/0.6, the dielectric constant ( ε ) and dielectric loss tangent ( tgδ ) value of the DCPDCE/BADCy hybrid resin was decreased to 2.92 and 5.08 × 10 −3, respectively. Impact and flexural strength was increased to 10.7 kJ/m 2 and 100.7 MPa, respectively. And the heat-resistance index ( THRI ) was 201.6 °C. Furthermore, the thermally conductive coefficient ( λ ) of the BN/DCPDCE/BADCy composite with 30 wt% BN fillers was improved to 0.64 W/mK, about 3 times in comparison to that of pristine DCPDCE/BADCy hybrid resin. Compared to that of Maxwell and Russell models, our proposed thermally conductive model could predict the experimental λ values more precisely. THRI value was enhanced from 201.6 °C (Pristine DCPDCE/BADCy hybrid resin) to 206.6 °C. Moreover, the BN/DCPDCE/BADCy composite with 10 wt% BN presented the optimal impact strength (11.7 kJ/m 2 ) and flexural strength (108.4 MPa).