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href="http://www.cdcfah.com/cp/third-xiangsu_qtflmw/">其他未分類</a>?KEP-430H錦湖歡迎來電真誠推薦上海君宜化工供應(yīng)</p><div id="o3br7uw" class="leftbox clearfix"><h1>KEP-430H錦湖歡迎來電真誠推薦上海君宜化工供應(yīng)</h1><div id="ib7wacj" class="proBig"><div id="ktv77q8" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627881503906/5210430.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="jxzlvbi" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627881503906/5210430.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="mgya8h3" 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>上海市</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關(guān)鍵詞：</span>KEP-430H錦湖歡迎來電,錦湖</p><p><span>***更新：</span>2021-01-27 05:03:59</p><p><span id="click" >瀏覽次數(shù)：1次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="drjb5sm" 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(lián)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(wǎng)址: </span></p><p><span>手機(jī): </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(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="oia74gd" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="mv73rif" class="box"><p><p> 2. EPDM分子結(jié)構(gòu)和特性; </p> <p> 三元乙丙是乙烯、丙烯和非共軛二烯烴的三元共聚物。二烯烴具有特殊的結(jié)構(gòu)，只有兩鍵之一的才能共聚，不飽和的雙鍵主要是作為交鏈處。另一個(gè)不飽和的不會(huì)成為聚合物主鏈，只會(huì)成為邊側(cè)鏈。三元乙丙的主要聚合物鏈?zhǔn)峭耆柡偷摹＿@個(gè)特性使得三元乙丙可以抵抗熱，光，氧氣，尤其是臭氧。三元乙丙本質(zhì)上是無極性的，對(duì)極性溶液和化學(xué)物具有抗性，吸水率低，具有良好的絕緣特性。 </p> <p> 主鏈上沒有雙鍵—耐臭氧耐候性(光，紫外線)，KEP-430H錦湖歡迎來電，優(yōu)異的耐熱氧老化性(可達(dá) 160℃) </p> <p> 天然碳?xì)錁渲蜏厝犴g性好，優(yōu)異的電性能和耐化學(xué)性能 </p> <p> 低密度高填充—降低膠料成本 </p> <p> 組分范圍寬泛—乙烯含量從低到高，KEP-430H錦湖歡迎來電，ENB 從 0 到高，分子量范圍寬泛 </p> <p> 在三元乙丙生產(chǎn)過程中，KEP-430H錦湖歡迎來電，通過改變?nèi)龁误w的數(shù)量，乙烯丙烯比，分子量及其分布以及硫化的方法可以調(diào)整其特性。乙丙橡膠綜合物理機(jī)械性能介于天然膠與丁苯膠之間，與丁基橡膠類似。KEP-430H錦湖歡迎來電</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-430H錦湖歡迎來電,錦湖" src="http://tyunfile.71360.com/UploadFile/junyi/637206627881503906/5210430.jpg"></div><p> EPDM在發(fā)動(dòng)機(jī)冷卻系統(tǒng)和空調(diào)制冷系統(tǒng)密封件中的應(yīng)用 </p> <p> EPDM用于制作發(fā)動(dòng)機(jī)冷卻系統(tǒng)中的密封圈。此類產(chǎn)品接觸的介質(zhì)是防凍液、陽光、水、臭氧，使用溫度在-40℃～125℃，短期耐熱溫度可達(dá)135℃。此類零件采用的EPDM，硬度（邵氏A）為60～80（制冷系統(tǒng)中應(yīng)用的圓密封圈為75）；其拉伸強(qiáng)度應(yīng)在10.5MPa以上；斷裂伸長(zhǎng)率一般在175%以上；在伸長(zhǎng)率50%下的定伸應(yīng)力為1～2MPa；在伸長(zhǎng)率**下的定伸應(yīng)力為2～5MPa以上；壓縮變形（150℃，22h）應(yīng)小于20%；其玻璃化轉(zhuǎn)變溫度（TR）比較大為-50℃；耐臭氧老化（50pphm,拉伸20%，72h）應(yīng)無裂紋；對(duì)于發(fā)動(dòng)機(jī)冷卻系統(tǒng)中應(yīng)用的密封件應(yīng)進(jìn)行冷卻液試驗(yàn)（將試樣放于防凍液中，150℃，166h，試驗(yàn)壓力約0.4MPa），其硬度變化應(yīng)為±5，拉伸強(qiáng)度變化應(yīng)為±20%，斷裂伸長(zhǎng)率變化應(yīng)為-15%～20%，體積改變應(yīng)在±5%；對(duì)于空調(diào)系統(tǒng)中應(yīng)用的密封件，應(yīng)進(jìn)行制冷劑試驗(yàn)（將試樣放于PAG、ND8制冷劑中，100℃，70h）其硬度變化**多為±5，拉伸強(qiáng)度變化**多為±20%，斷裂伸長(zhǎng)率變化**多為-15%～20%，體積改變應(yīng)在±5%之內(nèi)；熱老化試驗(yàn)（150℃，70h），其硬度變化應(yīng)為±5，拉伸強(qiáng)度下降應(yīng)小于10%，伸長(zhǎng)率的下降不能超過10%。錦湖洗衣機(jī)門封用EPDM普通牌號(hào)的乙丙橡膠即使不加入耐熱型防老劑，也具有良好的耐高溫性能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-430H錦湖歡迎來電,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000841935257343/6370008419352573433245202.JPG"></div><p> EPDM的動(dòng)態(tài)疲勞性能 </p> <p> 乙丙橡膠為非結(jié)晶橡膠，其抗疲勞性能尤其是抗龜裂增長(zhǎng)不是很好，與ＳＢＲ相當(dāng)。特別是過氧化物硫化的ＥＰＤＭ硫化膠，其抗疲勞性能更差。一般認(rèn)為初始龜裂與橡膠的缺點(diǎn)有關(guān)，而龜裂增長(zhǎng)與橡膠的拉伸強(qiáng)度和抗撕裂強(qiáng)度有關(guān)，因此提高硫化膠的均一性和強(qiáng)度均有助于抗疲勞性能的提高。丙烯酸金屬鹽尤其是二甲基丙烯酸鋅（ＺＤＭＡ）是ＥＰＤＭ較為理想增強(qiáng)材料ＺＤMA補(bǔ)強(qiáng)ＥＰＤＭ是先將微米級(jí)別的ＺＤＭＡ混入橡膠基體中，然后在過氧化物的作用下，ＺＤＭＡ從微米顆粒上脫落下來溶入橡膠基體中，再發(fā)生原位聚合形成聚丙烯酸金屬鹽納米粒子，從而對(duì)橡膠產(chǎn)生***增強(qiáng)。該復(fù)合材料通過過氧化物引發(fā)交聯(lián)后，能產(chǎn)生鍵能較高的Ｃ-Ｏ-Ｚｎ２＋-Ｏ-Ｃ（２９３ｋＪ／ｍ０１）離子鍵，強(qiáng)度高，撕裂強(qiáng)度好。離子鍵在動(dòng)態(tài)疲勞下，有自動(dòng)“愈合”功能，因此抗疲勞性能非常優(yōu)異。實(shí)驗(yàn)表明，用ＤＭＡ牢ｂ強(qiáng)的過氧化物交聯(lián)的ＥＰＤＭ硫化膠，其ＤｅＭａｔｔｉａ屈撓疲勞壽命是未力ＮＺＤＭＡ數(shù)十倍，比硫黃硫化的ＥＰＤＭ增加近一倍洲。 </p><p> 三元乙丙膠性能特點(diǎn)：與其他常用的通用橡膠或特種橡膠相比，三元乙丙橡膠的主要性能優(yōu)勢(shì)在于以下幾方面：(1)性價(jià)比高，生膠密度只有～，是生膠密度**輕的常用橡膠；且可大量填充以降低膠料成本。(2)優(yōu)異的耐老化特性，耐天候、耐臭氧、耐日光、耐熱、耐水、耐水蒸氣、耐紫外線、耐輻射等老化性能，在與其他不飽和的二烯類橡膠如NR、SBR、BR、NBR、和CR等并用時(shí)，EPDM可起到高分子抗氧劑或防老劑的作用。(3)優(yōu)異的耐化學(xué)藥品特性，耐酸、堿、洗滌劑、動(dòng)植物油、醇、酮等；杰出的耐水、耐過熱水、耐水蒸氣性能；耐極性油性能。(4)優(yōu)良的絕緣性能，體積電阻率1016Q·cm、擊穿電壓30～40MV/m、介電常數(shù)(1kHz，20℃)。(5)適用溫度范圍廣，比較低使用溫度-40～-60℃，可長(zhǎng)期在130℃條件下使用。三元乙丙是乙烯、丙烯和非共軛二烯烴的三元共聚物。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-430H錦湖歡迎來電,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000898065169874/6370008980651698743415527.JPG"></div><p> EPDM擠出成型 </p> <p> 橡膠的擠出成型始于內(nèi)胎成型，逐漸被廣泛應(yīng)用于汽車用內(nèi)飾材料、外飾材料、建筑用材料、管道、電線等領(lǐng)域特別是由于三元乙內(nèi)橡膠的擠壓物表面光滑干凈，主要用于維持形狀等物理特點(diǎn)要求高的地方， </p> <p> 為制造良好的KP三元乙丙橡膠擠出物，必須考慮如下要求特點(diǎn)。 </p> <p> l 分子量 </p> <p> l 分子量分布(MWD) </p> <p> l 乙烯丙烯的組成分布 </p> <p> l 填充劑的種類及擠壓加工性 </p> <p> l 硫化計(jì) </p> <p> 分子量的大小主要反應(yīng)在生膠的門尼上，較低的門尼粘度有助于橡膠的順利擠出，分子量分布寬擠出性能優(yōu)異，乙烯含量對(duì)擠出性能會(huì)有相對(duì)正向的影響，填料方面，炭黑、碳酸鈣相對(duì)于白炭黑而言更利于擠出。 </p> <p> 進(jìn)行擠出加工時(shí)主要發(fā)生的問題包括擠壓量、沖模膨脹、形狀維持性、擠壓物的表面狀態(tài)、給料性等，為解決這些問題，必須注意聚合體的選擇以及填充劑的選擇。用納米技術(shù)能夠在分子水平上重組物質(zhì)結(jié)構(gòu)，從而使新材料具有比傳統(tǒng)材料更優(yōu)越的性能。錦湖橡膠地毯用EPDM</p><p style="text-indent:25px">在橡膠制品生產(chǎn)過程中，黏合是一個(gè)很重要的課題。KEP-430H錦湖歡迎來電</p><p> EPDM在汽車暖氣、通風(fēng)和空調(diào)管中的應(yīng)用 </p> <p> 橡膠管一般分三層構(gòu)成，即內(nèi)層、中間加強(qiáng)層（化纖織物或鋼絲）及外層。三層所用材料應(yīng)根據(jù)實(shí)際要求進(jìn)行選擇。內(nèi)層膠應(yīng)耐所送介質(zhì)的腐蝕，外層膠應(yīng)具有機(jī)械強(qiáng)度，且適應(yīng)外部所接觸的環(huán)境。因此，內(nèi)、外膠常常不是一種橡膠。化纖織物主要用作低壓管，而金屬編織物用于高壓和超高壓管。EPDM已***用于暖氣和通風(fēng)管的內(nèi)外膠層、空調(diào)軟管的外膠層，這是因?yàn)樵摬牧暇哂泻芎玫哪涂諝?、水、臭氧、陽光老化性和低溫柔軟性。此類零件采用的EPDM，硬度（邵氏A）為70；其拉伸強(qiáng)度應(yīng)在10.5MPa以上；斷裂伸長(zhǎng)率一般在300%以上；壓縮殘余變形（100℃，22h）應(yīng)小于40%；其玻璃化轉(zhuǎn)變溫度（TR）比較大為-45℃；耐臭氧老化（50pphm,拉伸20%，72h）應(yīng)無裂紋；IRM902號(hào)油試驗(yàn)（將試樣放于IRM902號(hào)油中，100℃，70h）其硬度降低比較大為15，拉伸強(qiáng)度降低比較大為30%，撕裂強(qiáng)度降低比較大為30%，體積改變應(yīng)在80%之內(nèi)；熱老化試驗(yàn)（125℃，70h），其硬度變化應(yīng)為±5，拉伸強(qiáng)度變化應(yīng)為±15%，伸長(zhǎng)率的下降不能超過40%。 </p> <p> 推薦使用牌號(hào)：錦湖KEP960N KEP-430H錦湖歡迎來電</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(shí)力背景、信譽(yù)可靠、勵(lì)精圖治、展望未來、有夢(mèng)想有目標(biāo)，有組織有體系的公司，堅(jiān)持于帶領(lǐng)員工在未來的道路上大放光明，攜手共畫藍(lán)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(chǔ)，也希望未來公司能成為*****，努力為行業(yè)領(lǐng)域的發(fā)展奉獻(xiàn)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(qiáng)不息，斗志昂揚(yáng)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(jī)，一直以來，公司貫徹執(zhí)行科學(xué)管理、創(chuàng)新發(fā)展、誠實(shí)守信的方針，員工精誠努力，協(xié)同奮取，以品質(zhì)、服務(wù)來贏得市場(chǎng)，我們一直在路上！</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3029500.html</p></div></div></div></div></div><div id="qkhjdp8" class="page-right twoColRt"><div id="iw2ofxz" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="cw2ryvr" 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(qiáng) 信息推薦自業(yè)物資供應(yīng)" 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