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Poliuretanos para compósitos reforçados

Poliuretanos para compósitos reforçados

Medha Joshi

72,08 €
IVA incluido
Disponible
Editorial:
KS OmniScriptum Publishing
Año de edición:
2026
Materia
Química
ISBN:
9786630363760
72,08 €
IVA incluido
Disponible

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Sobre IBD

Foi preparada uma série de corantes monoméricos por diazotização de vários 2-aminobenzotiazóis, que foram posteriormente acoplados com resorcinol. Os corantes poliméricos foram preparados por policondensação dos corantes monoméricos com diisocianato de hexametileno (HMDI) e foram caracterizados através do peso molecular, titulação condutométrica não aquosa, análise termogravimétrica, espectroscopia IR e no visível, e análise elementar. Os corantes monoméricos foram igualmente caracterizados por análise elementar e espectros IR. A pureza de todos os corantes foi verificada por cromatografia em camada fina. Os polímeros sintetizados foram combinados com resina epóxi comercial, o éter diglicidílico do bisfenol A (DGEBA). O estudo da cura das resinas preparadas foi monitorizado por DSC. Com base nos termogramas de DSC, foram laminados compósitos reforçados com fibra de vidro e caracterizados quanto às suas propriedades químicas, mecânicas e elétricas. Todos os ensaios químicos, mecânicos e elétricos realizados nos compósitos foram conduzidos de acordo com os métodos da ASTM.

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