Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/148545
Title: Fabrication of fire-retardant polyurea and its functional characterizations
Authors: Lim, Rachel Zhi Qi
Keywords: Engineering::Materials
Issue Date: 2021
Publisher: Nanyang Technological University
Source: Lim, R. Z. Q. (2021). Fabrication of fire-retardant polyurea and its functional characterizations. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/148545
Abstract: This projectis proposed toevaluatepolyurea coatings for use in industrial applications. For such applications, their fire resistant properties need to be improved. The work reported here is divided into two parts. In Part 1,differentbase polyurea formulations were developed and evaluated by hardness test, differential scanning calorimetry (DSC) and flammability test. The goal was to replace portions of the polyurea backbone to improve the flame retardancy. Themain difference between thesamplebackbone is oneutilized an aromatic diisocyanate(MDI) while the other sample replaced the diisocyanate to isophorone diisocyanate (IPDI) which is an aliphatic diisocyanate. Flammability testdetermined that the AR3sample yielded the best results between the control samples forlongertime to ignitionand elapsed time. It is believed that the aromatic diamine and aliphatic diisocyanatemixed together produceda synergistic effect in improvingthe flame properties. In Part 2 of this work, the aromatic and aliphatic based polyurea was used as the base formulation and various combinations of flame retardant additives were incorporated in an attempt to further improve the flame properties. Flammability testindicated that the best combinations included talc and melaminepolyphosphate.
URI: https://hdl.handle.net/10356/148545
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:MSE Student Reports (FYP/IA/PA/PI)

Files in This Item:
File Description SizeFormat 
FYP RACHELLIMZHIQI (U1722026E) SUBMISSION.pdf
  Restricted Access
8.6 MBAdobe PDFView/Open

Page view(s)

203
Updated on May 18, 2022

Download(s) 50

41
Updated on May 18, 2022

Google ScholarTM

Check

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.