Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13898
ชื่อเรื่อง: High thermal and mechanical properties enhancement obtained in highly filled polybenzoxazine nanocomposites with fumed silica
ผู้แต่ง: Dueramae I.
Jubsilp C.
Takeichi T.
Rimdusit S.
Keywords: Benzoxazine monomers
Composite fracture surfaces
Homogeneous distribution
Mechanical and thermal properties
Microscopic analysis
Particle reinforcement
Polymer Matrix Composites (PMCs)
Thermo-mechanical
Activation energy
Electronics packaging
Mechanical properties
Nanocomposites
Silica
Thermoanalysis
Filled polymers
วันที่เผยแพร่: 2014
บทคัดย่อ: Highly filled polybenzoxazine nanocomposites filled with nano-SiO 2 particles were investigated for their mechanical and thermal properties as a function of filler loading. The nanocomposites were prepared by high shear mixing followed by compression molding. A very low A-stage viscosity of benzoxazine monomer gives it excellent processability having maximum nano-SiO2 loading as high as 30 wt% (18.8 vol%) with negligible void content. Moreover, thermal analysis of the curing process of the compound of the PBA-a/nano-SiO2 composites was found to be autocatalytic in nature with average activation energy of 79-92 kJ mol-1. Microscopic analysis (SEM) performed on the PBA-a/nano-SiO2 composite fracture surface indicated a nearly homogeneous distribution of the nano-scaled silica in the polybenzoxazine matrix. In addition, the enhancement in storage modulus of the nano-SiO2 filled polybenzoxazine composites was found to be significantly higher than that of the recently reported nano-SiO2 filled epoxy composites. The dependence of the nanocomposites' modulus on the nano-SiO2 particles content is well fitted by the generalized Kerner equation. Furthermore, the relatively high micro-hardness of the PBA-a/nano-SiO2 composites up to about 600 MPa was achieved. Finally, the substantial enhancement in the glass transition temperature (Tg) of the PBA-a/nano-SiO2 composites was also observed with the ΔTg up to 16 C at the nano-SiO2 loading of 30 wt%. The resulting PBA-a/nano-SiO2 composite is a highly attractive candidate as coating material in electronic packaging or other related applications. © 2013 Elsevier Ltd. All rights reserved.
URI: https://ir.swu.ac.th/jspui/handle/123456789/13898
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884128066&doi=10.1016%2fj.compositesb.2013.08.027&partnerID=40&md5=773de57e5bc002be5d3997399f31667e
ISSN: 13598368
Appears in Collections:Scopus 1983-2021

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