<div><br></div><div><section class="_135editor" data-role="paragraph" style="max-inline-size: 100%; margin: 0px; padding: 0px; border: 0px none; z-index: 0; overflow-wrap: break-word !important; outline: none 0px !important;"><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;">　　燃烧过程的实质就是固相分解转化为气相氧化，燃烧就是—种非常剧烈的氧化反应。实践表明，燃烧是由高度活泼的羟基自由基和氢自由基引发的链式反应，自由基浓度越大，燃烧的速度就越快。</p><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br style="max-inline-size: 100%; margin: 0px; padding: 0px; overflow-wrap: break-word !important; outline: none 0px !important;"></p><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;">　　纺织用各种纤维，由于化学结构的不同，其燃烧性能也不同，表示燃烧难易程度的指标是极限氧指数，简称氧指数，以“LOI”表示。其含义是指材料点燃后置于氧气和氮气的混合气体中维持共继续燃烧所密要的最低含氧体积分数。其表达式为：</p><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; overflow-wrap: break-word !important; outline: none 0px !important;"><br style="max-inline-size: 100%; margin: 0px; padding: 0px; overflow-wrap: break-word !important; outline: none 0px !important;"></p><p style="max-inline-size: 100%; margin-bottom: 0px; clear: both; min-height: 1em; cursor: text; line-height: 1.75em; overflow-wrap: break-word !important; outline: none 0px !important;">　　</p></section></div><div style="text-align: center; "><img src="http://dayaotex-img.gz.bcebos.com/article/fffspic/fzmlsj1319.png"></div><div style="text-align: center; "><img src="http://dayaotex-img.gz.bcebos.com/article/fffspic/fzmlsj1320.png"></div><div style="text-align: center; "><br></div>