河南玻璃棉卷氈廠家來電咨詢荊州開發(fā)區(qū)茂源保溫材料供應-b2b網(wǎng)站_b2b電子商務平臺【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="吸音棉是多孔吸聲材料，當聲波在空氣中引起振動時，吸音棉透氣性的物理參數(shù)會使微量的空氣從多孔材料的孔隙中通過，河南玻璃棉卷氈廠家，此時材料的兩面的靜壓差和氣流線速度之間的比就是材料的流阻，河南玻璃棉卷氈廠家。吸引材料的內(nèi)部微孔數(shù)量、大小以及互"><meta name="keywords" content="河南玻璃棉卷氈廠家"><link rel="canonical" href="http://m.cdcfah.com/"/><meta name="applicable-device" content="pc"><link rel="shortcut icon" href="/static/new_net_01/images/favicon.ico"><link rel="stylesheet" href="/static/new_net_01/css/slick.css" /><link rel="stylesheet" href="/static/new_net_01/css/addnew.css"><link rel="stylesheet" href="/static/new_net_01/css/sidenav.css"><link rel="stylesheet" href="/static/new_net_01/css/style.css" /><link rel="stylesheet" href="/static/new_net_01/css/tab.css"><link rel="stylesheet" href="/static/new_net_01/css/404.css"> <meta name="baidu-site-verification" content="OBVzrC9aaQ" /> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" 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class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/maoyuanbaowen/2019/8/637012168664220917/6370121686642209173674438.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="vfc2q4o" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/maoyuanbaowen/2019/8/637012168664220917/6370121686642209173674438.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="b37he3v" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>湖北省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>河南玻璃棉卷氈廠家</p><p><span>***更新：</span>2020-06-10 05:11:18</p><p><span id="click" >瀏覽次數(shù)：0次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="ff7kc2a" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">荊州開發(fā)區(qū)茂源保溫材料廠</a></p><p><span>聯(lián)系人：</span>朱杰</p><p><span>郵箱: </span>1007714548@qq.com</p><p><span>電話: </span>18261227725</p><p><span>傳真: </span>0716_34659425</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>0716-34659425</p><p><span>地址: </span>湖北省荊州市沙市區(qū)東方大道紡印一路19號</p><p>[當前離線] <a rel="nofollow"> [加為商友] </a><a rel="nofollow"> [發(fā)送信件] </a></p></div></div><div id="zjldaei" class="page-proshow02"><p class="title">詳細說明</p><div id="uobyaho" class="box"><p><p style="text-indent:25px">吸音棉是多孔吸聲材料，當聲波在空氣中引起振動時，吸音棉透氣性的物理參數(shù)會使微量的空氣從多孔材料的孔隙中通過，河南玻璃棉卷氈廠家，此時材料的兩面的靜壓差和氣流線速度之間的比就是材料的流阻，河南玻璃棉卷氈廠家。吸引材料的內(nèi)部微孔數(shù)量、大小以及互相連通的程度等因素都會影響流阻的大小，流阻的大小對材料吸音作用有著重要的影響。一定厚度的多空材料應該對應一個合理的流阻數(shù)值，過高或過低都會影響材料的吸音性能，河南玻璃棉卷氈廠家。因此，要對材料的流阻進行調(diào)整，將流阻值控制在科學的范圍內(nèi)，發(fā)揮出其比較大的作用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南玻璃棉卷氈廠家" src="http://tyunfile.71360.com/UpLoadFile/maoyuanbaowen/2019/8/637012168664220917/6370121686642209173674438.jpg"></div><p style="text-indent:25px">多孔材料背后空氣層的影響：多孔材料的背后空氣層的厚薄程度，對其吸聲功能有著重要的影響。當多孔材料與剛性壁有一定的空間時，材料的背面會出現(xiàn)一定的空腔，增加了材料的有效厚度，對其低頻噪音吸收功能有著一定的影響。當多孔材料的厚度與堆密度一定時，背后空氣層變化的影響較大，當空氣層厚度為１／４波長的奇數(shù)倍時，吸聲系數(shù)達到比較大值。外部使用條件變化的影晌：首先，溫度的影響和變化，會使聲速和波長變化，也會因為空氣鉆滯性導致流阻的變化，影響材料的吸聲功能。通常，溫度升高，高頻吸聲頻率的曲線移向高頻；其次，濕度的影響，多孔材料吸收水分，導致材料的本質(zhì)發(fā)生變化，材料的孔隙率下降，吸聲性能受到影響。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南玻璃棉卷氈廠家" src="http://tyunfile.71360.com/UpLoadFile/maoyuanbaowen/2019/8/637012168546281558/6370121685462815581278264.jpg"></div><p style="text-indent:25px">荊州開發(fā)區(qū)茂源保溫材料廠和大家一起來認識下常見的吸聲材料有哪些。一般來說材料吸聲主要通過兩個方面實現(xiàn)：一是靠材料本身的吸聲特性，如玻璃棉、巖棉等纖維或多孔材料。簡單原理就是當聲波入射到材料表面順著微孔穿入到內(nèi)部，由于反射摩擦以及空氣黏滯阻力，使一部分聲能損耗轉(zhuǎn)變?yōu)闊崮?，另外氣體壓縮放熱、膨脹吸熱，進行熱交換也能使聲能被吸收。另一方面是靠吸聲結(jié)構(gòu)，其材料本身不具備吸聲特性，但經(jīng)過打孔、開縫等加工和表面處理制成某種結(jié)構(gòu)而產(chǎn)生吸聲效果，主要有薄膜、薄板，以及空腔、穿孔板等共振吸聲結(jié)構(gòu)等。原理是共振結(jié)構(gòu)在聲波激發(fā)下振動，振動結(jié)構(gòu)由于本身的內(nèi)摩擦和與空氣間的摩擦把部分振動能量轉(zhuǎn)換為熱能而消耗掉，實現(xiàn)吸聲效果。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="河南玻璃棉卷氈廠家" src="http://tyunfile.71360.com/UpLoadFile/maoyuanbaowen/2019/8/637012168459150250/6370121684591502506564636.jpg"></div></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/208606.html</p></div></div></div></div></div><div id="shebdfc" class="page-right twoColRt"><div id="ynkc8d8" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="8s3sf88" class="recomPic likePro"><a 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