High Performance Resins for Aeronautical Applications - Final Report

Sridhar, MK and Kanakalatha, P and Kiran, V Pandare and Chandra, Ayay and Sugunalakshmi, M and Padma, G and Padmavathi, T (2000) High Performance Resins for Aeronautical Applications - Final Report. Project Report. National Aerospace Laboratories, Bangalore.

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    Abstract

    The presence of controlled molecular weight backbone like aromatic ethers or dicyclopentadiene novolaks in resin systems give improved fracture toughness. Liquid crystallinity also gives resins with higher fracture toughness. Endcapping these systems /with cyanates give resins which form thermally stable networks. The cyanate end caps I form cyclic aromatic rings during cure resulting in high T,, low moisture absorption and better retention of mechanical properties at elevated temperatures. A few such systems were developed and evaluated. The dicyanate of Bisphenol A, liquid crystalline epoxy: diglycidyl ether of Chydroxy phenyl-4'hydroxy benzoate and the cyanate ester of I phenol-dicyclopentadiene-novolak were the systems evaluated.

    Item Type: Proj.Doc/Technical Report (Project Report)
    Uncontrolled Keywords: Cynateester, liquid crystalline epoxy, Phenol dicyclopentadiene-novolak & its derivatives, moisture absorption, fracture toughness
    Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
    Division/Department: Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Materials Science Division, Fibre Reinforced Plastics Division
    Depositing User: Ms Indrani V
    Date Deposited: 05 Mar 2012 15:41
    Last Modified: 05 Mar 2012 15:41
    URI: http://nal-ir.nal.res.in/id/eprint/10357

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