New BN-epoxy composites obtained by thermal latent cationic curing with enhanced thermal conductivity
A series of boron nitride (BN) composites, with different BN content, were prepared and characterized by cationic curing of DGEBA/BN formulations. As cationic initiator a commercial benzylanilinium salt was used. This cationic system shows good latent characteristics that were not lost on adding the...
| Autores: | , , , , |
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| Tipo de documento: | artigo |
| Data de publicação: | 2017 |
| País: | España |
| Recursos: | Universitat Politècnica de Catalunya (UPC) |
| Repositório: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglês |
| OAI Identifier: | oai:upcommons.upc.edu:2117/108322 |
| Acesso em linha: | https://hdl.handle.net/2117/108322 https://dx.doi.org/10.1016/j.compositesa.2017.09.007 |
| Access Level: | Acceso aberto |
| Palavra-chave: | Thermodynamics Polymeric composites Layered structures Mechanical properties Polymer-matrix composites (PMCs) Thermosetting resin Termodinàmica Compostos polimèrics Àrees temàtiques de la UPC::Enginyeria dels materials::Materials plàstics i polímers Àrees temàtiques de la UPC::Enginyeria química::Química orgànica |
| Resumo: | A series of boron nitride (BN) composites, with different BN content, were prepared and characterized by cationic curing of DGEBA/BN formulations. As cationic initiator a commercial benzylanilinium salt was used. This cationic system shows good latent characteristics that were not lost on adding the filler. The performance of the catalytic system was optimized by varying the amount of initiator and adding little proportions of glycerol. The kinetics of the curing process was evaluated by calorimetric measurements. The addition of BN allowed increasing thermal conductivity without loss of mechanical properties like Young modulus, impact resistance, adhesion and other thermal characteristics like Tg or thermal stability. In addition, dielectric properties were improved with the increment of filler. |
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