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class="twoCol"><div id="amyviuq" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://m.cdcfah.com/">首頁?<a href="http://m.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://m.cdcfah.com/cp/first-_jxhxp/">精細(xì)化學(xué)品</a>?<a href="http://m.cdcfah.com/cp/second-jxhxp_hcjzj/">合成膠粘劑</a>?<a href="http://m.cdcfah.com/cp/third-hcjzj_ddj/">導(dǎo)電膠</a>?汕頭硅橡膠冷縮管批發(fā) 歡迎咨詢深圳市海普睿能科技供應(yīng)</p><div id="89ll2yb" class="leftbox clearfix"><h1>汕頭硅橡膠冷縮管批發(fā) 歡迎咨詢深圳市海普睿能科技供應(yīng)</h1><div id="ulldgnj" class="proBig"><div id="ykliqhd" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szhprn/637335357538212891/7581696.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="kbherdp" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/szhprn/637335357538212891/7581696.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="f8yjwy8" class="content"><p><span>需求數(shù)量：</span>0</p><p><span>價(jià)格要求：</span>面議</p><p><span>所在地：</span>廣東省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>汕頭硅橡膠冷縮管批發(fā),電磁屏蔽導(dǎo)電橡膠</p><p><span>***更新：</span>2021-01-28 08:11:13</p><p><span id="click" >瀏覽次數(shù)：8次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="rf7yl3b" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">深圳市海普睿能科技有限公司</a></p><p><span>聯(lián)系人：</span>蔡美婷</p><p><span>郵箱: </span>caimeiting@szhprn.com</p><p><span>電話: </span>13413335595</p><p><span>傳真: </span>0755_81780594</p><p><span>網(wǎng)址: </span>http://www.szhprn.com</p><p><span>手機(jī): </span>0755-23272920</p><p><span>地址: </span>深圳市龍崗區(qū)坂田街道風(fēng)門路52號(hào)金源科技園2棟301</p><p>[當(dāng)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="kgxzryp" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="k3abeab" class="box"><p><p style="text-indent:25px">電磁屏蔽導(dǎo)電橡膠屬于復(fù)合型導(dǎo)電高的分子材料的一種。復(fù)合型導(dǎo)電高的分子材料是指高的分子材料本身不具有導(dǎo)電性，但在加工成型時(shí)通過加入導(dǎo)電填料，如炭黑、金屬粉末箔等，汕頭硅橡膠冷縮管批發(fā)，利用分散復(fù)合、層基復(fù)合、表面復(fù)合等方法，使制品具有導(dǎo)電性。其中，分散復(fù)合比較為常用。電磁屏蔽導(dǎo)電橡膠的工作機(jī)理：一般橡膠均為良好的電絕緣體。復(fù)合型電磁屏蔽導(dǎo)電橡膠的導(dǎo)電機(jī)理有兩種理論，即鏈鎖式導(dǎo)電通路和隧道效應(yīng)。鏈鎖式導(dǎo)電通路的機(jī)理認(rèn)為，填料粒子必須在零點(diǎn)幾納米以內(nèi)的距離靠近，這樣就可產(chǎn)生壓差，使填料粒子的π電子依靠鏈鎖傳遞移動(dòng)實(shí)現(xiàn)電流通過，汕頭硅橡膠冷縮管批發(fā)，汕頭硅橡膠冷縮管批發(fā)。橡膠中填料粒子的分散狀態(tài)形成鏈鎖必須有一定的填料用量，才能出現(xiàn)強(qiáng)的導(dǎo)電現(xiàn)象，因而支配橡膠導(dǎo)電性的比較主要因素是填料的用量，這是比較經(jīng)典的一種解釋。電磁屏蔽導(dǎo)電橡膠是末來導(dǎo)電硅橡膠的主導(dǎo)填充粉末。汕頭硅橡膠冷縮管批發(fā)</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="汕頭硅橡膠冷縮管批發(fā),電磁屏蔽導(dǎo)電橡膠" src="https://tyunfile.71360.com/UploadFile/szhprn/637335357538212891/7581696.png"></div><p style="text-indent:25px">電磁屏蔽導(dǎo)電橡膠依據(jù)電流、電壓和電阻的關(guān)系，只要有電壓降時(shí)，總是會(huì)存在一定電流流動(dòng)，只是電流太小，人感覺不到。電磁屏蔽導(dǎo)電橡膠的體積電阻相對(duì)金屬還是很大，依據(jù)體積電阻與距離成正比的關(guān)系，距離越長，阻值越大。在醫(yī)用電極上，導(dǎo)電橡膠已經(jīng)被普遍應(yīng)用，此時(shí)導(dǎo)電橡膠電極較薄，一般是在1mm以下，電極只是在上下二個(gè)面接觸，即距離只有1mm，這時(shí)導(dǎo)電橡膠是完全通電的。電磁屏蔽導(dǎo)電橡膠必須受一定的壓縮力才能良好導(dǎo)電，所以結(jié)構(gòu)設(shè)計(jì)必須保證合適的壓力又不過壓。板材高度壓縮量在7~15%;實(shí)心圓形、D形高度壓縮量在12~30%;管狀、P形高度壓縮量在20~60%。導(dǎo)電橡膠具有良好的電磁密封和水汽密封能力，在一定壓力下能夠提供良好的導(dǎo)電性(控制頻率達(dá)到40GHz)。揭陽電磁屏蔽導(dǎo)電橡膠生產(chǎn)廠家電磁屏蔽導(dǎo)電橡膠在電子、電信、電力、jun工、航空、航天、艦船等領(lǐng)域中普遍應(yīng)用。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="汕頭硅橡膠冷縮管批發(fā),電磁屏蔽導(dǎo)電橡膠" src="https://tyunfile.71360.com/UploadFile/szhprn/637335357698271485/9203004.png"></div><p style="text-indent:25px">電磁屏蔽電磁屏蔽導(dǎo)電橡膠是通過向高的分子材料中加入各種導(dǎo)電填料的辦法實(shí)現(xiàn)其導(dǎo)電能力和電磁屏蔽能力。根據(jù)添加的導(dǎo)電填料種類的不同，又可將導(dǎo)電硅橡膠分為金屬粉末填充型和非金屬粉末填充型兩大類。金屬粉末是電的良導(dǎo)體，將金屬粉末填充到硅橡膠中可明顯改善其導(dǎo)電性能.而部分非金屬粉末具有很高的電導(dǎo)率，將其填充到硅橡膠中，不僅能夠得到導(dǎo)電性能良好的硅橡膠，還能夠保持硅橡膠原有性能優(yōu)點(diǎn)?；诖耍芯渴紫戎铝τ陂_發(fā)一種適用于制備單組分現(xiàn)場成型電磁屏蔽導(dǎo)電橡膠的硅橡膠半成品。所研制的硅橡膠半成品不僅需要具有很好的力學(xué)性能，而且需要很好的流動(dòng)性來符合點(diǎn)膠的需要。隨后，通過向前述硅橡膠半成品中添加兩種不同的導(dǎo)電填料，制備出電磁屏蔽導(dǎo)電橡膠，對(duì)其各項(xiàng)性能進(jìn)行測定，以確定其能否適用于實(shí)際應(yīng)用中。</p><p style="text-indent:25px">電磁屏蔽導(dǎo)電橡膠的體積電阻率為 10的4次方- 10的8次方Ω.cm ，過去這類電磁屏蔽導(dǎo)電橡膠多以炭黑為導(dǎo)電填料，制品為黑色，且電磁屏蔽導(dǎo)電橡膠老化后析出炭黑會(huì)污染環(huán)境。近年來，我們多采用硅系硅化物填料，可制成不同顏色的彩色抗靜電導(dǎo)電橡膠，其體積電阻率為 10的5次方- 10的7次方Ω.cm ，抗靜電性能比黑色電磁屏蔽導(dǎo)電橡膠要好。實(shí)驗(yàn)發(fā)現(xiàn)，將各種金屬粉末或炭黑粒子混入各種橡膠中后，材料的導(dǎo)電性能隨導(dǎo)電填料的濃度的變化規(guī)律大致相同。導(dǎo)電填料濃度較低時(shí)，材料的電導(dǎo)率隨濃度增加很少；而當(dāng)導(dǎo)電填料的濃度達(dá)到一定值時(shí)，電導(dǎo)率急劇上升，變化值可達(dá)到十個(gè)數(shù)量級(jí)以上。電磁屏蔽導(dǎo)電橡膠不需要特別的底層涂料，跟大多數(shù)產(chǎn)品的黏著力特別好。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="汕頭硅橡膠冷縮管批發(fā),電磁屏蔽導(dǎo)電橡膠" src="https://tyunfile.71360.com/UploadFile/szhprn/637335357254365235/6155068.png"></div><p style="text-indent:25px">電磁屏蔽導(dǎo)電橡膠料配方按表13-55配合，電磁屏蔽導(dǎo)電橡膠在開煉機(jī)上混煉，電磁屏蔽導(dǎo)電橡膠在硫化劑上硫化成試片，硫化條件142℃×15min，試片厚度0.204cm，用XD電阻率測試儀，電磁屏蔽導(dǎo)電橡膠在溫度20℃，不同電流、電壓條件下測試樣品的體積電阻率，標(biāo)準(zhǔn)規(guī)定，電磁屏蔽導(dǎo)電橡膠料體積電阻率在20℃時(shí)不小于1×10Ω·cm，將再生橡膠與丁腈橡膠并用混入乙炔炭黑制得的電磁屏蔽導(dǎo)電橡膠片完全滿足要求。傳統(tǒng)用的電磁屏蔽導(dǎo)電橡膠拉伸強(qiáng)度為12.8N/mm，拉斷伸長率為745%。電磁屏蔽導(dǎo)電橡膠的導(dǎo)電性越好，屏蔽效能越高。汕頭橡膠絕緣自粘膠帶供應(yīng)商</p><p style="text-indent:25px">電磁屏蔽導(dǎo)電橡膠體積電阻可能只是從某一側(cè)面反映屏蔽的大小，但無法衡量吸波能力的大小。汕頭硅橡膠冷縮管批發(fā)</p><p style="text-indent:25px">電磁屏蔽電磁屏蔽導(dǎo)電橡膠應(yīng)用過程中可能出現(xiàn)的不同外部環(huán)境，系統(tǒng)研究了電磁屏蔽導(dǎo)電橡膠在100℃高溫環(huán)境、85℃-85％RH高溫高濕環(huán)境和3.5％鹽霧環(huán)境下的加速服役老化行為。結(jié)果發(fā)現(xiàn)，100℃高溫環(huán)境對(duì)電磁屏蔽導(dǎo)電橡膠的力學(xué)性能的改變比較為明顯，而在85℃-85％RH高溫高濕環(huán)境和3.5％鹽霧環(huán)境下的變化趨勢要小很多，原因是在100℃高溫環(huán)境下橡膠材料產(chǎn)生了二次硫化現(xiàn)象。此外，100℃高溫環(huán)境下電磁屏蔽導(dǎo)電橡膠的體積電阻率上升比較快。時(shí)效過程在96h時(shí)間內(nèi)體積電阻率從0.0024Ω·cm上升到了0.1Ω·cm左右。該現(xiàn)象是電磁屏蔽導(dǎo)電橡膠內(nèi)部Ag-Cu粉末裸露的Cu表面發(fā)生氧化和橡膠基體在高溫下產(chǎn)生的熱膨脹共同作用而產(chǎn)生的結(jié)果。汕頭硅橡膠冷縮管批發(fā)</p></p><br /><p>文章來源地址: http://m.cdcfah.com/cp/3047317.html</p></div></div></div></div></div><div id="3pvivhy" class="page-right twoColRt"><div id="d8gdahd" class="box01 margin10 clearfix"><h3><a href="http://m.cdcfah.com/cp/">猜你喜歡</a></h3><div id="yi3cpqd" class="recomPic likePro"><a href="http://m.cdcfah.com/cp/814588.html"><div><img src="http://tyunfile.71360.com/UpLoadFile/2019/11/1/14/637082168864691056_lgpj_5374157.jpg" alt="福建ZF配件哪家強(qiáng) 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