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<script>var V_PATH="/";window.onerror=function(){ return true; };</script> </head><body> <h1><a href="http://www.cdcfah.com/">六月丁香婷婷亚洲中文字幕,欧美精品高清一区二区蜜芽,尤物92午夜福利视频,精品视频一区二区三区在线观看</a></h1> <div style="position:fixed;left:-9000px;top:-9000px;"><object id="qgqbi"></object><delect id="qgqbi"><sub id="qgqbi"><dl id="qgqbi"></dl></sub></delect><track id="qgqbi"></track><tr id="qgqbi"></tr><video id="qgqbi"></video><xmp id="qgqbi"><span id="qgqbi"></span></xmp><span id="qgqbi"></span><strong id="qgqbi"><em id="qgqbi"><sup id="qgqbi"><progress id="qgqbi"></progress></sup></em></strong><dl id="qgqbi"><small id="qgqbi"></small></dl><wbr id="qgqbi"></wbr><noscript id="qgqbi"></noscript><tr id="qgqbi"></tr><track id="qgqbi"><dl id="qgqbi"></dl></track><label id="qgqbi"><em id="qgqbi"></em></label><tbody id="qgqbi"></tbody><blockquote id="qgqbi"></blockquote><dfn id="qgqbi"><center id="qgqbi"></center></dfn><sub id="qgqbi"></sub><u id="qgqbi"></u><noframes id="qgqbi"></noframes><menu 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href="http://www.cdcfah.com/cp/third-xiangsu_qtflmw/">其他未分類</a>?KEP-5770錦湖誠信經營真誠推薦上海君宜化工供應</p><div id="plrr2eg" class="leftbox clearfix"><h1>KEP-5770錦湖誠信經營真誠推薦上海君宜化工供應</h1><div id="39yormo" class="proBig"><div id="as28nux" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627879140625/8545070.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="r8oicns" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627879140625/8545070.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="vntjkkg" class="content"><p><span>需求數量：</span>0</p><p><span>價格要求：</span>面議</p><p><span>所在地：</span>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產品關鍵詞：</span>KEP-5770錦湖誠信經營,錦湖</p><p><span>***更新：</span>2021-02-07 10:03:06</p><p><span id="click" >瀏覽次數：7次</span></p><a rel="nofollow" class="button">聯系我們</a></div></div><div id="znot3xs" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海君宜化工銷售中心（有限合伙）</a></p><p><span>聯系人：</span>蘇剛</p><p><span>郵箱: </span>sg@estrongchem.com</p><p><span>電話: </span>13524989551</p><p><span>傳真: </span>021_60823996 </p><p><span>網址: </span></p><p><span>手機: </span>021-60826029</p><p><span>地址: </span>上海市浦東新區(qū)五星路676弄萬科御河10棟</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="prciyd8" class="page-proshow02"><p class="title">詳細說明</p><div id="ubhxrmc" class="box"><p><p> EPDM共混改性三： </p> <p> ＥＰＤＭ／氫化丁腈橡膠（HNBR）：中國**ＣＮｌ６２１４４１Ａ提出用乙烯含量６０％以下的ＥＰＤＭ與不超過３０份的ＨＮＢＲ并用，并配有５０份甲基丙烯酸鋅，其中ＥＰＤＭ作為海相，ＨＮＢＲ為島相的共混物，KEP-5770錦湖誠信經營，具有耐高低溫、耐油，KEP-5770錦湖誠信經營、高硬度、**度、耐疲勞性能，可用于高負荷傳動帶。 </p> <p> ＥＰＤＭ／乙烯．醋酸乙烯共聚物（EVM）：通過與不同ＶＡ含量的ＥＶＭ橡膠的并用，以及采用不同的共混比，研究了ＥＰＤＭ與ＥＶＭ并用膠料對物理機械性能的影響。結果表明：ＥＰＤＭ與ＥＶＭ并用，可以有效改善ＥＰＤＭ膠料的耐熱性、耐油性、耐低溫性、耐溶劑性及阻燃性，KEP-5770錦湖誠信經營，粘合性能增加。同時降低了膠料的門尼粘度，并用膠具有良好的混煉工藝及成型加工性。 </p> <p> ＥＰＤＭ／ＥＶＭ并用膠以其優(yōu)良的耐熱性、低壓變性、耐油性、無鹵阻燃性廣泛應用于以汽車工業(yè)為主的工業(yè)用、普通用各種密封制品、擠出制品、膠輥、膠帶、符合環(huán)保要求的電纜等各種橡膠制品。乙丙橡膠為非結晶橡膠，其抗疲勞性能尤其是抗龜裂增長不是很好。與ＳＢＲ相當。KEP-5770錦湖誠信經營</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-5770錦湖誠信經營,錦湖" src="http://tyunfile.71360.com/UploadFile/junyi/637206627879140625/8545070.jpg"></div><p> EPDM在發(fā)動機冷卻系統(tǒng)和空調制冷系統(tǒng)密封件中的應用 </p> <p> EPDM用于制作發(fā)動機冷卻系統(tǒng)中的密封圈。此類產品接觸的介質是防凍液、陽光、水、臭氧，使用溫度在-40℃～125℃，短期耐熱溫度可達135℃。此類零件采用的EPDM，硬度（邵氏A）為60～80（制冷系統(tǒng)中應用的圓密封圈為75）；其拉伸強度應在10.5MPa以上；斷裂伸長率一般在175%以上；在伸長率50%下的定伸應力為1～2MPa；在伸長率**下的定伸應力為2～5MPa以上；壓縮變形（150℃，22h）應小于20%；其玻璃化轉變溫度（TR）比較大為-50℃；耐臭氧老化（50pphm,拉伸20%，72h）應無裂紋；對于發(fā)動機冷卻系統(tǒng)中應用的密封件應進行冷卻液試驗（將試樣放于防凍液中，150℃，166h，試驗壓力約0.4MPa），其硬度變化應為±5，拉伸強度變化應為±20%，斷裂伸長率變化應為-15%～20%，體積改變應在±5%；對于空調系統(tǒng)中應用的密封件，應進行制冷劑試驗（將試樣放于PAG、ND8制冷劑中，100℃，70h）其硬度變化**多為±5，拉伸強度變化**多為±20%，斷裂伸長率變化**多為-15%～20%，體積改變應在±5%之內；熱老化試驗（150℃，70h），其硬度變化應為±5，拉伸強度下降應小于10%，伸長率的下降不能超過10%。 KEP-980N錦湖廠家直銷價三元乙丙中*****使用的是ENB，它比DCPD產品硫化要快得多。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-5770錦湖誠信經營,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000896311876503/6370008963118765035779106.JPG"></div><p> 乙丙膠的發(fā)展 </p> <p> 乙丙橡膠是齊格勒——納塔立體有規(guī)催化體系開發(fā)后發(fā)展起來的一種介于通用橡膠和特種橡膠之間的合成橡膠。１９５０年后納塔（Ｎａｔｔａ）等發(fā)現了新型聚合催化劑，于是采用立體有規(guī)性催化劑進行烯烴聚合的研究逐漸開展起來，特別是將石油所大量產生的乙烯、丙烯等烯烴試行聚合，乙烯和丙烯的共聚物特別表現出橡膠彈性。這種聚合物的特點是：在分子排列上很象天然橡膠，但物理性能優(yōu)異，基本原料價廉。它作為合成橡膠于１９５９年首先由意大利蒙特卡蒂尼（Ｍｏｎｔｉｃａｔｉｎｉ）公司的海洛特工廠商品化，這是所謂（二元乙丙橡膠）。這種橡膠主鏈不含雙鍵，是與以往合成橡膠完全不同的一類橡膠。一方面因該橡膠不含雙鍵致使耐熱性、耐天候性、耐臭氧性和耐化學藥品性十分優(yōu)越。另一方面由于不含雙鍵的緣故而不能采用硫黃硫化法使之交聯，但在１９６２年通過加入第三單體的方法而使它變成可用硫黃硫化的橡膠。 </p><p> EPDM硫化體系介紹 </p> <p> 三元乙丙橡膠(EPDM)常用依據不同的性能要求可使用硫黃、過氧化物及樹脂硫化。過氧化物硫化膠有較好熱穩(wěn)定性和耐壓縮長久變形性,硫化速度慢,抗撕裂性能和其他性能均較差,氣味不佳。硫載體硫化膠交聯密度大，綜合力學性能較好,長久變形大,耐熱老化性能差。采用硫載體等助劑活化過氧化物或硫黃硫化體系,可使EPDM或其并用硫化膠具有更加優(yōu)良的加工安全性和力學性能。過氧化物常用交聯助劑有:烯丙基化合物(TAC和TAIC等),DTDM,HVA-2等。此外,不飽和羧酸金屬鹽也是一種能夠參與硫化的多功能助劑,可起硫化助劑、橡膠/金屬粘合助劑和補強劑等的作用,獲得的羧酸金屬鹽原位補強橡膠具有高模量、**度、高抗撕、高耐磨、高耐熱和耐溶劑等優(yōu)異特性,在特種橡膠制品領域有著廣闊的應用前景。乙丙橡膠有優(yōu)異的耐天候、耐臭氧、耐熱、耐酸堿、耐水蒸汽、顏色穩(wěn)定性、電性能、充油性及常溫流動性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-5770錦湖誠信經營,錦湖" src="http://tyunfile.71360.com/UploadFile/junyi/637206627875976562/5053802.jpg"></div><p> <p> 8. EPDM汽車密封條 </p> <p> 汽車用密封條主要是由具有良好彈性和抗壓縮變形、耐老化、臭氧、化學 </p> <p> 作用、較寬的使用溫度范圍（ -40℃ ~1 20℃）的三元乙丙橡膠 (EPDM) 橡膠發(fā)泡與密實復合而成，內含獨特的金屬夾具和舌形扣，堅固耐用，利于安裝。 </p> <p> 汽車用密封條主要應用在車門門扇門框、側面車窗、前后檔風玻璃、發(fā)動機 </p> <p> 蓋和行李箱蓋上，起到防水、防塵、隔音、隔溫減震、裝飾的作用。還可以生產用于安裝客車行李倉門的橡膠鉸鏈。 </p> <p> 其分類可為以下兩種： </p> <p> 1 ）按所裝配部位分類：門框條；行李箱條；發(fā)動機蓋條；導槽；內外側條（內外切水）；頭道風窗和其他。 </p> <p> 2）復合組分分類：密實膠（單一硬度為密實膠，不同硬度則為復合膠料）；海綿膠與密實膠雙復合；海綿膠、密實膠與骨架三復合；四復合、多復合等。 </p> <p> <br /> </p> </p> <p> <br /> </p> <p> <span style="display:none;"></span> 第三二烯烴類型的單體是通過乙烯和丙烯的共聚，在聚合物中產生不飽和，以便實現硫化。KEP-5770錦湖誠信經營</p><p style="text-indent:25px">三元乙丙橡膠具有優(yōu)異的電絕緣性能和耐電暈性，電性能優(yōu)于丁苯橡膠、氯磺化聚乙烯、聚乙烯和交聯聚乙烯。KEP-5770錦湖誠信經營</p><p> 乙丙橡膠化學改性 </p> <p> 盡管乙丙橡膠具有耐熱、抗老化、抗沖擊彈性和低溫性能良好等優(yōu)點，但存在強度低、自粘性及互粘性差，與其他膠種并用時，共混相溶性不好等缺點。為了制備綜合性能更優(yōu)異的橡膠，在技術上常對乙丙橡膠進行極化改性。改性乙丙橡膠主要是將乙丙橡膠進行溴化、氯化、磺化、順酐化、馬來酸酐化等。乙丙橡膠還通過接枝方法進行改性，以解決乙丙橡膠的分子主鏈為非極性飽和結構存在的強度低、自粘性及互粘性差、本身著色、印刷、電鍍困難、與其它膠種共混并用時相容性差等性能缺點，從而拓展了乙丙橡膠在許多方面的應用。 KEP-5770錦湖誠信經營</p><p style="text-indent:25px">上海君宜化工銷售中心（有限合伙）是一家有著雄厚實力背景、信譽可靠、勵精圖治、展望未來、有夢想有目標，有組織有體系的公司，堅持于帶領員工在未來的道路上大放光明，攜手共畫藍圖，在上海市市轄區(qū)等地區(qū)的橡塑行業(yè)中積累了大批忠誠的客戶粉絲源，也收獲了良好的用戶口碑，為公司的發(fā)展奠定的良好的行業(yè)基礎，也希望未來公司能成為*****，努力為行業(yè)領域的發(fā)展奉獻出自己的一份力量，我們相信精益求精的工作態(tài)度和不斷的完善創(chuàng)新理念以及自強不息，斗志昂揚的的企業(yè)精神將**上海君宜化工和您一起攜手步入輝煌，共創(chuàng)佳績，一直以來，公司貫徹執(zhí)行科學管理、創(chuàng)新發(fā)展、誠實守信的方針，員工精誠努力，協同奮取，以品質、服務來贏得市場，我們一直在路上！</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3202671.html</p></div></div></div></div></div><div id="jhcijz8" class="page-right twoColRt"><div id="zrxttij" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="gekepaf" class="recomPic likePro"><a href="http://www.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配件哪家強信息推薦自業(yè)物資供應" class="vcenter" 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