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<p>　　原标题：泡沫铝材料——为装备消音降噪</p><div class="img_wrapper"><img src="//k.sinaimg.cn/n/spider20241122/624/w400h224/20241122/8c18-4f71d9f0e94dd3ac06f5cad286128bd5.jpg/w700d1q75cms.jpg?by=cms_fixed_width" id="0"/><span class="img_descr"></span></div><p cms-style="font-L">　　<font cms-style="font-L color240"> 美国俄亥俄级核潜艇发动机舱的相关部位应用了泡沫铝材料</font></p><p cms-style="font-L">　　<font cms-style="font-L strong-Bold color240"> 泡沫铝材料——</font></p><p cms-style="font-L">　　<font cms-style="font-L strong-Bold color240"> 为装备消音降噪</font></p><p cms-style="font-L">　　泡沫铝是在纯铝或铝合金中加入添加剂后，经过发泡工艺而成的一种性能优异的防护材料。该材料具备密度小、耐高温、抗腐蚀、隔音降噪、导热率低、电磁屏蔽性高等特点，被广泛应用于军用电磁防护、装甲防护、潜艇消音降噪等领域。</p><p cms-style="font-L">　　比如，泡沫铝可以用作新型复合装甲的中间或里层材料。它能吸收部分能量，分散穿甲弹和破甲弹的冲击力，防止弹片对装甲车内部的损坏。这种设计不仅提高了装甲车的防护能力，还降低了其整体重量，提升了装备的机动性和灵活性。</p><p cms-style="font-L">　　此外，美国海军在俄亥俄级核潜艇的发动机舱相关部位布置了泡沫铝吸声板，用以降低噪声。这能够有效地避开敌方探测，提升其作战效能。</p><p cms-style="font-L">　　<font cms-style="font-L strong-Bold color240"> PMI泡沫材料——</font></p><p cms-style="font-L">　　<font cms-style="font-L strong-Bold color240"> 力学性能堪比金属</font></p><p cms-style="font-L">　　最近几年，随着高新技术快速发展，在战斗机、无人机航空航天等对轻型复合材料需求比较旺盛的领域，PMI泡沫材料的需求增势尤为迅猛。</p><div class="img_wrapper"><img src="//k.sinaimg.cn/n/spider20241122/657/w400h257/20241122/1f32-3c0cd7b166410de51742227e73496ff0.jpg/w700d1q75cms.jpg?by=cms_fixed_width" alt=" 英国EH-101反潜直升机桨叶应用了PMI泡沫材料。资料图片　" id="1"/><span class="img_descr"> 英国EH-101反潜直升机桨叶应用了PMI泡沫材料。资料图片　</span></div><p cms-style="font-L">　　 PMI泡沫的密度远低于传统金属材料，其力学性能却堪比金属材料，能够承受较高的载荷而不发生变形，因而被广泛应用于航空航天领域。例如，空客A380将PMI泡沫用于后压力框的长桁上，显著提升了结构的强度和稳定性；英国EH-101反潜直升机的桨叶，将PMI泡沫用作芯材，显著延长了桨叶的使用寿命。</p><p cms-style="font-L">　　此外，PMI泡沫还具有更高的热稳定性，能够在高温环境下保持结构完整。美国Deltall运载火箭的载荷段整流罩、级间段、中间体、隔热罩等航天器件中都广泛运用了PMI泡沫材料。 </p><p cms-style="font-L">　　<font cms-style="font-L strong-Bold color240"> EPS泡沫材料——</font></p><p cms-style="font-L">　　<font cms-style="font-L strong-Bold color240"> 高强度可透波</font></p><p cms-style="font-L">　　 EPS泡沫又称发泡聚苯乙烯，是一种轻质、高强度的高分子聚合物。它以聚苯乙烯树脂为主要原料，通过加入发泡剂，在加热条件下使树脂软化并膨胀成型，最终生成具有闭孔结构的泡沫塑料制品。</p><div class="img_wrapper"><img src="//k.sinaimg.cn/n/spider20241122/625/w400h225/20241122/319c-55eacd6f443a3ea9efbda66d18399d3c.jpg/w700d1q75cms.jpg?by=cms_fixed_width" id="2"/><span class="img_descr"></span></div><p cms-style="font-L">　　<font cms-style="font-L color240"> 应用了EPS泡沫材料的苏联Neman雷达</font></p><p cms-style="font-L">　　 EPS泡沫具有良好的抗震、绝缘和介电性能，常被用作雷达天线罩的制造材料，是雷达天线的“绝缘外衣”。在雷达系统中，天线罩不仅要保护雷达天线免受恶劣环境的侵害，还应具备良好的电磁波透射性能，以保证雷达信号的传输质量。而在军舰或武器系统中，由EPS泡沫材料制成的雷达天线罩受到外部冲击作用时，其闭孔结构会吸收大量动能，既有效保护雷达系统，又不削弱电磁波透射，从而保证了装备作战效能。（姚欣彤、胡继成整理）</p>  </div> <div class="article-bottom clearfix" id='article-bottom'>  <div style="margin: 20px auto 15px; font-size:14px;"> <ins class="sinaads" data-ad-pdps="PDPS000000067953" data-ad-width="880" data-ad-height="30" data-ad-type="embed"></ins> <script> (sinaads = window.sinaads || []).push({}); </script> </div>  </div> <div class="article-bottom clearfix">  <div 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