Bio‐inspired low dielectric phenol formaldehyde laminates for electrical insulation applications

摘要

Abstract >In this research work, the effect of individual and hybridized reinforcement of sisal fibrils with randomly distributed short sisal fibers has been investigated. The sisal fibrils (SP) and sisal fibers (SF) were reinforced with phenol formaldehyde matrix using hot stage compression molding technique. Composite laminates were prepared keeping the total wt% of the fibrils/fibers to be 40. The mechanical strength of SP reinforced phenol formaldehyde laminates was found to be superior as compared to sisal fiber and sisal fibril/fiber hybrid reinforced laminates. The 40?wt% sisal fibril reinforced composite laminates (SP40PF60) showed 73% and 25% increase in tensile strength, 78% and 23% increase in flexural strength, and 174% and 44% increase in impact strength as compared to 40?wt% sisal fiber reinforced laminates (SF40PF60) and 40?wt% hybrid reinforced (having equal proportion of fibrils and fibers) laminates (SF20SP20PF60). The dielectric properties of SP40PF60 increased by 14% and 9% as compared to SF40PF60 and SF20SP20PF60 laminates. Thermo‐gravimetric analysis analysis also showed higher thermal stability for sisal fibril phenol formaldehyde laminates than pure fiber and fibril/fiber hybrid laminates. Scanning electron microscopy was carried out to understand the nature of fibril/fiber/matrix interface. These laminates have been specially designed for press boards used in transformer assembly as environment friendly high mechanical strength and electrical insulating material. Additionally, these laminates can be useful for various fields such as electrical and aerospace industry. </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> [P>在本研究中，研究了随机分布的短剑纤维的单独和杂交增强剑麻纤维的效果。使用热级压缩成型技术用酚醛甲醛基质加固剑麻原纤维（SP）和Sisal纤维（SF）。制备复合层压板将总原纤维/纤维的总重量％保持为40.与Sisal纤维和剑麻纤维/纤维杂交加固层压板相比，SP增强酚醛醛层层的机械强度均为优越。 40℃（WT％Sisal Fibril增强复合层压材料（SP40PF60）显示拉伸强度增加73％和25％，弯曲强度的增加78％和23％，而抗冲突力增加174％和44％，相比40°（肌）％Sisal纤维增强层压板（SF40PF60）和40·wt％杂交增强（具有相同的原纤维和纤维比例）层压板（SF20SP20PF60）。与SF40PF60和SF20SP20PF60层压板相比，SP40PF60的介电性能增加了14％和9％。热重分析分析还显示出比纯纤维和原纤维/纤维杂交层叠层的剑麻纤维酚甲醛层压板的热稳定性较高。进行扫描电子显微镜，以了解纤维/纤维/矩阵界面的性质。这些层压板专门设计用于变压器组件的压板，作为环境友好的高机械强度和电绝缘材料。另外，这些层压板可用于各种领域，例如电气和航空航天行业。</ 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9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=electrical properties&option=203" rel="nofollow">electrical properties;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=mechanical properties&option=203" rel="nofollow">mechanical properties;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=natural hybrid composites&option=203" rel="nofollow">natural hybrid composites;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sisal fiber&option=203" rel="nofollow">sisal fiber;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=sisal fibril&option=203" rel="nofollow">sisal fibril;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=thermo‐gravimetric analysis&option=203" rel="nofollow">thermo‐gravimetric analysis;</a> </p> <div class="translation"> 机译：电学特性;机械性能;天然混合复合材料;Sisal纤维;Sisal Fibril;热重量分析; </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/0704024546546.html">Bio‐inspired low dielectric phenol formaldehyde laminates for electrical insulation applications</a> <b>[J]</b> . <span> <a 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insulation laminates</a> <b>[P]</b> . <span> 外国专利：  PL389325A1 </span> <span> . 2011-04-26</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：用于电绝缘层压板的酚醛树脂的合成方法 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130441449593.html">Process for preparation of foamed formaldehyde resins, e.g. urea-, melamine-, phenol-, and furan resins, useful for wood glues, molding compositions, heat and noise insulation, laminates, electrical insulating materials, and binders</a> <b>[P]</b> . <span> 外国专利：  DE10233565A1 </span> <span> . 2004-02-05</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：制备泡沫甲醛树脂的方法，例如脲醛，三聚氰胺，酚醛和呋喃树脂，可用于木胶，模塑组合物，隔热和隔音，层压板，电绝缘材料和粘合剂 </span> </p> </li> </ul> </div> </div> </div> <div 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