Effect of organic grafting expandable graphite on combustion behaviors and thermal stability of low‐density polyethylene composites

摘要

Abstract >An efficient approach has been proposed for improving the flame retardancy of low‐density polyethylene (LDPE) by organic‐inorganic intumescent interfacial flame retardants, avoiding the damage to intrinsic performances of LDPE caused by high loading of flame‐retardant additives. The expandable graphite (EG) particles are successfully functionalized by a grafting process containing phosphorous, exhibiting the excellent thermal stability and high flame‐retardant efficiency. Then a battery of flame‐retardant LDPE composites with different content of grafted EG (GEG) are fabricated and investigated. The results indicate that the Underwriters Laboratories‐94 V‐0 is achieved, and the limiting oxygen index is as high as 25.1% when 12?wt% GEG particles are filled into LDPE matrix. The residues of the flame‐retardant LDPE composites observably increase with the addition of GEG. The results of cone calorimeter test also verify that GEG is an efficient flame retardant for LDPE due to the interfacial effect between graphite and inorganic flame retardant. Besides, the microtopography of residual char shows that the LDPE/GEG composites are more compact and integrated after burning. This interfacial grafting flame retardant exhibits excellent flame‐retardant efficiency and will be promising for the development of organic‐inorganic intumescent flame retardants for polymer materials. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> 提出了一种有效的方法，用于通过有机 - 无机膨胀界面阻燃剂改善低密度聚乙烯（LDPE）的阻燃性，避免了由高负载阻燃添加剂引起的LDPE内在性能的损害。可膨胀石墨（例如）颗粒通过含有磷的接枝过程成功官能化，表现出优异的热稳定性和高阻燃剂效率。然后制造和研究具有不同含量的嫁接（GEG）的含量不同含量的阻燃LDPE复合材料的电池。结果表明，当填充12μl％GEG颗粒时，填充了载体实验室-94V-0，并且限制氧指数高达25.1％。填充到LDPE基质中。阻燃LDPE复合材料的残留物随着GEG的添加观察地增加。由于石墨和无机阻燃剂之间的界面效应，锥形量热计试验结果还验证了GEG是LDPE的有效阻燃剂。此外，剩余炭的微复印表明，LDPE / GEG复合材料更紧凑，燃烧后集成。这种界面接枝阻燃剂表现出优异的阻燃效率，并且对聚合物材料的有机无机膨胀阻燃剂的开发是有希望的。</ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-29566/'>《Polymer Composites》</a> <b style="margin: 0 2px;">|</b><span>2020年第2期</span><b style="margin: 0 2px;">|</b><span>共10页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/7852.html" title="增强塑料、填充塑料">增强塑料、填充塑料;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=expandable graphite&option=203" rel="nofollow">expandable graphite;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=flame retardancy&option=203" rel="nofollow">flame retardancy;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=modification&option=203" rel="nofollow">modification;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=thermal property&option=203" rel="nofollow">thermal property;</a> </p> <div class="translation"> 机译：可扩展石墨;阻燃性;改性;热性; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704024545663.html">Effect of organic grafting expandable graphite on combustion behaviors and thermal stability of low‐density polyethylene composites</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> </a> <a href="/journal-foreign-29566/" target="_blank" rel="nofollow" class="tuijian_authcolor">Polymer Composites .</a> <span>2020</span><span>,第2期</span> </span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: 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resin beads, their manufacturing method, the pre-expanded beads and an expanded molded article</a> <b>[P]</b> . <span> 外国专利：  KR20070032631A </span> <span> . 2007-03-22</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：苯乙烯改性的线性低密度聚乙烯基树脂珠，苯乙烯改性的线性低密度聚乙烯基可发泡树脂珠，它们的制造方法，预发泡珠和发泡成型品 </span> </p> </li> </ul> </div> </div> </div> <div class="theme cardcommon" style="overflow: auto;display:none"> <h3 class="all_title" id="enpatent55">相关主题</h3> <ul id="subject"> </ul> </div> </div> </div> </div> <div class="right rightcon"> <div class="details_img cardcommon clearfix" style="margin-bottom: 10px;display:none;" > </div> </div> </div> <div id="thesis_get_original1" class="downloadBth" style="bottom: 19px;z-index: 999;" onclick="ywcd('0704024545663','4',7,2,1,'',this,24)" class="delivery" prompt="010401" title="通过人工服务将文献原文发送至邮箱" >获取原文</div> <div class="journalsub-pop-up" 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