Effect of intumescent ammonium polyphosphate (APP) and melamine cyanurate (MC) on the properties of epoxy/glass fiber composites
2011; Elsevier BV; Volume: 43; Issue: 2 Linguagem: Inglês
10.1016/j.compositesb.2011.11.013
ISSN1879-1069
AutoresWan-Leng Lim, M. Mariatti, W. S. Chow, K.T. Mar,
Tópico(s)Synthesis and properties of polymers
ResumoThe effects of halogen-free flame retardants (FR) such as intumescent ammonium polyphosphate (APP) and melamine cyanurate (MC) on the flammability and mechanical properties of epoxy/glass fiber composite systems were studied. Overall, intumescent APP shows better flammability results compared with MC. The composite with 5 vol.% APP performed sufficiently well in the UL-94 test and LOI, whereas 20 vol.% MC is required to achieve similar results. The addition of 1 vol.% MC into 4 vol.% APP had shown some improvement on the composite flame resistance. The composite attains the maximum flexural strength at 15 vol.% while the dynamic mechanical analysis shows that the addition of flame retardants increased the storage modulus but did not change the glass transition temperature Tg.
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