Rigid foams from cashew nut shell liquid: synthesis, characterization and evaluation of polyol and foam properties
Tejas S Gandhi, Bharat kumar Z Dholakiya, Mayank R Patel
In the past, polyurethanes were usually made with petroleum polyols. With the dwindling and non-renewable petroleum resource, some novel polyols made from vegetable and seed oil have been investigated for their potential of replacing the petroleum polyols. Of particular interest is a group of polyols derived from Cashewnut oil. These new polyols, however, have some major disadvantages limiting its applications when compared with petroleum polyols. Present work includes synthesis of novel polyols from CNSL as non-petroleum renewable resource and application in rigid polyurethane foam with better mechanical, thermal and fire performance.