2024-03-29T05:47:43Z
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2023-01-16T04:12:18Z
320:321:322
Flame retardancy in fabric consisting of cellulosic fiber and modacrylic fiber containing fine-grained MoO3 particles
TANAKA, TAKESHI
67178
TERAKADO, OSAMU
67179
HIRASAWA, MASAHIRO
67180
Flame retardancy of fabrics consisting of modacrylic fiber containing with various dispersed metal compounds and cellulosic fiber has been investigated by means of flame test (ISO15025 procedure A) and limiting oxygen index (LOI). It has been found that excellent flame retardancy is achieved by fine-grained MoO3 particles. The afterflame time in flame test and the LOI value are improved with decreasing particle size of MoO3. The flame retardancy of MoO3 (particle size; 0.1 µm) is comparable to that of Sb2O3. On the other hand, significant improvement in flame retardancy is not observed for other metal compounds although some metal oxides and a hydroxide in the present study are known as flame retardant or smoke suppressing agent in halogen containing polymer in previous studies. In order to clarify the mechanism of the observed flame retardancy by the addition of fine-grained MoO3, we have carried out X-ray fluorescence spectrometry (XRF) measurement of the fabric specimen after the flame test and thermogravimetric analysis (TGA) of various types of samples. These analytical data indicated that MoO3 works as halogen synergist in solid phase and the char of modacrylic fiber formed by addition of MoO3 suppresses decomposition of the cotton blended in the fabric in the range of the ignition temperature.
Version of record online: 14 July 2015
journal article
Wiley
2016
application/pdf
FIRE AND MATERIALS
4
40
612
621
http://doi.org/10.1002/fam.2314
http://hdl.handle.net/2237/24972
0308-0501
https://nagoya.repo.nii.ac.jp/record/22811/files/Takeshi_Tanaka_revised_manuscript_with_figures_20161018.pdf
eng
https://doi.org/10.1002/fam.2314
This is the peer reviewed version of the following article: [Tanaka, T., Terakado, O., and Hirasawa, M. (2016) Flame retardancy in fabric consisting of cellulosic fiber and modacrylic fiber containing fine-grained MoO3 particles. Fire Mater., 40: 612–621], which has been published in final form at [http://doi.org/10.1002/fam.2314]. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.