Advanced Fibre Reinforced Methyl Nadicimide Resins .

Sarfaraz Alam; L.D. KandKal; I.K. Varma

doi:10.14429/dsj.46.4074

Sarfaraz Alam Defence Materials & Stores Research & Development Establishment, Kanpur.
L.D. KandKal Defence Materials & Stores Research & Development Establishment, Kanpur.
I.K. Varma Indian Institute of Technology,New Delhi.

DOI: https://doi.org/10.14429/dsj.46.4074

Keywords: Kevlar fabrics, Methyl nadicimide resins .

Abstract

Glass/carbon/kevlar-reinforced composites were fabricated using two structurally different methl nadicimide resins. The resin content of the laminates was in the range of 32-39 per cent. Interlaminar shear strength (ILSS)and flexual strength (FS) depended on the structure of the methyl nadicimide resins. A significant decrease in the ILSS was observed on treatment with boiling water for 500 h and on isothermal ageing at 300 degree celsius for 100,250 and 500 h. The limiting oxygen index (LOI) was the lowest for laminates based on Kevlar fabrics (i.e.54) whereas the laminates based on glass/carbon showed very high LOI(>90).

Author Biographies

Sarfaraz Alam, Defence Materials & Stores Research & Development Establishment, Kanpur.

Dr Sarraraz Alam obtained his MTech and PhD in Polymer Technology from IIT, Delhi, in 1991 and 1995, respectively. He joined DRDO as a Scientis he has been engaged in the development of advanced matrices for aerospace applications. He has over 25 research and review articles to his credit. He is a life member of IndianI Thermal Analysis / Society.

L.D. KandKal, Defence Materials & Stores Research & Development Establishment, Kanpur.

Dr LD Kandpal obtained his MSc and PhD in Organic Chemistry from Agra University in 1961 and 1966, respectively. He joined DRDO as a Defence Research Fellow in 1968 and has been engaged in the development of advanced matrices for aerospace applications. He has over 30 research papers to his credit.

I.K. Varma, Indian Institute of Technology,New Delhi.

Prof IK Varma obtained her DSc and PhD from University of Glasgow, UK, in 1986 and 1965, respectively. Currently, she has been on the faculty of lIT, Delhi since April 1966. Her major researdh interests are in the areas of synthesis and characterisation on polymers, mhchanistic studies of polymer degradation and stabilisation, polymer composites, and structure-property relationship in polymers. Thirty-five students have obtained PhD under her guidance. She has published. more than 200 research papers in science. journals. She is fellow of National Aca~emy of Sciences (India), Regional Editor of Journal of Thermal Analysis (WiI1ey UK and Akademiai Kiado), and member Editorial Board, Bulletin Materials Science.