Article
  • Effect of Ignition Position and Sample Thickness on Flame Spread in Flexible Polyurethane Foam

  • Qi Yuan*, Chang Li***, Paul Amyotte****, Lingfeng Wang*, Chunmiao Yuan*, **,† , Gang Li*, and Weidong Yan***

  • *Fire & Explosion Protection Laboratory, Northeastern University, Liaoning, Shenyang 110819, China
    **State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
    ***Department of Civil Engineering, Shenyang Jianzhu University, Liaoning, Shenyang 110168, China
    ****Department of Process Engineering, Applied Science, Dalhousie University, Halifax NS, B3H 4R2, Canada

  • Flexible Polyurethane Foam에서 화염확산에 대한 발화위치와 샘플 두께의 영향

  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.

Abstract

Fire behavior of flexible polyurethane foam (FPUF) at different sample thicknesses and ignition positioning was investigated. Effects on flame height, mass loss rate and other parameters were tested, and the flame propagation mechanism was analyzed. A method for predicting equivalent combustion diameter (D) values of the dynamic change of liquid pool at different positions is proposed. Combined with data of sample mass loss rate, flame height can be predicted. Based on a transition state model, a method for predicting the fire risk of FPUF in late stage combustion by calculating the generation time of polyols is proposed. With edge ignition, FPUF burning produces an inclined surface during the combustion process which enhances the length of the preheating zone by means of heat conduction and heat radiation. Flame spread rate (FSV) in FPUF with edge ignition was greater than with center point ignition.


Keywords: flexible polyurethane foam, sample thickness, ignition position, fire behavior, equivalent combustion diameter.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2022; 46(4): 444-454

    Published online Jul 25, 2022

  • 10.7317/pk.2022.46.4.444
  • Received on Dec 9, 2021
  • Revised on Mar 10, 2022
  • Accepted on Apr 27, 2022

Correspondence to

  • Chunmiao Yuan

  • *Fire & Explosion Protection Laboratory, Northeastern University, Liaoning, Shenyang 110819, China
    **State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China

  • E-mail: yuanchunmiao@mail.neu.edu.cn