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onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="b8n888y" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/8/637025952626016648/6370259526260166489420208.JPG" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="m23jtuo" 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>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>錦湖NR共混EPDM,錦湖</p><p><span>***更新：</span>2020-12-24 04:03:52</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="srj9vmb" 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="gkwgnuw" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="gphbnpb" class="box"><p><p> 8. 密封條用EPDM選擇 </p> <p> 錦湖EPDM在密封條配方中應(yīng)用推薦： </p> <p> 汽車密封條一般有以下幾種結(jié)構(gòu)：密實膠（單一硬度為密實膠，不同硬度則為復(fù)合膠料）；海綿膠與密實膠雙復(fù)合；海綿膠、密實膠與骨架三復(fù)合；四復(fù)合、多復(fù)合等。 </p> <p> <br /> </p> <p> 密實膠配合要點: </p> <p> 生膠要求:高門尼，中高乙烯，中等ENB </p> <p> 配方總份數(shù): 350phr-500phrr </p> <p> 關(guān)鍵性能: </p> <p> 混煉分散性 </p> <p> 擠出性能硬度 </p> <p> 拉伸、壓變等。 </p> <p> <br /> </p> <p> 配方設(shè)計: </p> <p> 高填充牌號: KEP570F、KEP5770、KEP281F、KEP282F、 </p> <p> **牌號:KEP2380 </p> <p> 接角牌號:KEP980N, KEP4640E, KEP2320, KEP330 </p> <p> <br /> </p> <p> 發(fā)泡膠配合要點： </p> <p> 生膠要求: </p> <p> 高門尼，中低等乙烯含量，高第三單體含量 </p> <p> <br /> </p> <p> 總份數(shù): 280-350份 </p> <p> 含膠率: 27%-32% </p> <p> 關(guān)鍵性能:擠出挺性好，錦湖NR共混EPDM、外觀光滑優(yōu)良，發(fā)泡均勻 </p> <p> 關(guān)鍵性能:壓縮荷重、壓變、密度 </p> <p> 配方設(shè)計: KEP2480、KEP9590 (高壓變，錦湖NR共混EPDM，回彈) 三元乙丙橡膠是一種密度較低的橡膠，錦湖NR共混EPDM，其密度為0.87。錦湖NR共混EPDM</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="錦湖NR共混EPDM,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/8/637025952626016648/6370259526260166489420208.JPG"></div><p> 2. EPDM在液壓制動用軟管和圓密封圈中的應(yīng)用 </p> <p> 利用EPDM耐制動液（DOT3、DOT4、DOT5（硅油基））的特性，用于液壓制動軟管內(nèi)膠層和制動泵中的密封圈的制作。此類產(chǎn)品接觸的主要介質(zhì)是制動液，使用溫度在-40℃～120℃之間，短期耐熱溫度可達(dá)135℃。此類零件采用的EPDM，硬度（邵氏A為80其拉伸強度應(yīng)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(yīng)力為2.5～4MPa；在伸長率**下的定伸應(yīng)力為8MPa以上；壓縮變形（100℃，22h）應(yīng)小于40%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；制動液試驗（將試樣放于制動液中，150℃，70h）其硬度變化應(yīng)為5，拉伸強度變化應(yīng)為±20%，伸長率變化應(yīng)為-15%～20%，體積改變應(yīng)在±5%；熱化試驗（125℃，70h），其硬度變化應(yīng)為±5，拉伸強度變化應(yīng)為±15%，伸長率的下降不能超過15%。 KEP-650錦湖歡迎咨詢乙丙橡膠有優(yōu)異的耐水蒸氣性能并優(yōu)于其耐熱性。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="錦湖NR共混EPDM,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000897774080935/6370008977740809353806419.JPG"></div><p> 8. EPDM的塑煉與混煉 </p> <p> 塑煉?：EPDM的塑煉效果差，不象天然橡膠和丁苯橡膠那么易于塑煉。門尼粘度高的三元乙丙橡膠塑煉時，由于分子鏈斷裂，門尼粘度有所下降。低門尼枯度的乙丙橡膠，只是在塑煉初期門尼粘度稍有下降。因此三元乙丙橡膠不象天然橡膠那樣需要專門進(jìn)行塑拉，只是在混煉前先將三元乙丙橡膠在低溫下稍薄通即可。 </p> <p> 混煉? ：EPDM可采用開煉機(jī)和密煉機(jī)混煉。但用密煉機(jī)混煉填充劑分散效果更好。 </p> <p> 開煉機(jī)混煉 </p> <p> 由于三元乙丙橡膠塑煉效果差，缺乏粘著性，不易“ 吃” 炭黑，不宜包輥。故用開煉機(jī)混煉時應(yīng)注意以下幾點： </p> <p> 1 ）門尼粘度低的可以用開煉機(jī)混煉，門尼粘度高的用開煉機(jī)混煉比較困難； </p> <p> 2）混煉開始時采用窄輥尾，先將生膠薄通 1 0 次左右，使其形成連續(xù)的包輥膠后再放寬輥距進(jìn)行加料混煉； </p> <p> 3）輥溫應(yīng)控制在 60℃左右，前輥溫度稍低于后輥； </p> <p> 4）混煉高填充油和高填充劑的膠料時，可將油和填充劑先混合后再加到膠料 </p> <p> 中去，以改善混煉操作。 </p> <p> 密煉機(jī)混煉 </p> <p> EPDM 密煉機(jī)混煉應(yīng)注意以下幾點： </p> <p> 1 ）容量應(yīng)比正常容量高 15%左右； </p> <p> 2）溫度要高些，以利于乙丙橡膠在高溫下塑化，從而使配合劑易于分散均勻； </p> <p> 3）填充劑用量高的膠料宜采用逆混法，填充劑用量低的膠料用一般混煉法較好。 </p><p> 三元乙丙橡膠是乙烯、丙烯和少量的非共軛二烯烴的共聚物，是乙丙橡膠的一種，以EPDM（EthylenepyleneDieneMonomer）表示，因其主鏈?zhǔn)怯苫瘜W(xué)穩(wěn)定的飽和烴組成，只在側(cè)鏈中含有不飽和雙鍵，故其耐臭氧、耐熱、耐候等耐老化性能優(yōu)異，可***用于汽車部件、建筑用防水材料、電線電纜護(hù)套、耐熱膠管、膠帶、汽車密封件等領(lǐng)域。三元乙丙橡膠是乙烯、丙烯以及非共軛二烯烴的三元共聚物，1963年開始商業(yè)化生產(chǎn)。每年全世界的消費量是80萬噸。EPDM**主要的特性就是其優(yōu)越的耐氧化、抗臭氧和抗侵蝕的能力。由于三元乙丙橡膠屬于聚烯(PA66)烴家族，它具有極好的硫化特性。在所有橡膠當(dāng)中，EPDM具有比較低的比重。它能吸收大量的填料和油而影響特性不大。因此可以制作成本低廉的橡膠化合物。乙丙橡膠缺點是在室溫下粘度不好，給加工制造帶來困難。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="錦湖NR共混EPDM,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000842259005966/6370008422590059664557747.JPG"></div><p> 2. 增強改性二： </p> <p> 短纖維／橡膠復(fù)合材料（ＳＦＲＣ）將纖維的剛性與橡膠的柔性有機(jī)結(jié)合在一起，滿足一些橡膠制品的某些性能特殊要求，在傳動帶、膠管、密封制品等廣泛應(yīng)用。ＳＦＲＣ性能強烈依賴于纖維的形狀系數(shù)（長徑比）、短纖維在橡膠基體的分散及取向、纖維與橡膠的黏合等。由于ＥＰＤＭ分子結(jié)構(gòu)中缺少活性基團(tuán)，內(nèi)聚能低，與纖維之間界面作用弱，影響纖維的分散和黏合，因此纖維的表面處理對ＥＰＤＭ的ＳＦＲＣ非常重要。經(jīng)過改性處理的短纖維對ＥＰＤＭ膠料的交聯(lián)反應(yīng)具有某種催化作用，它能增加交聯(lián)速度和交聯(lián)密度，使復(fù)合材料獲得更大的強度和彈性。三元乙丙橡膠高溫流動性較好，故制造模壓制品時沒有什么困難。錦湖NR共混EPDM</p><p style="text-indent:25px">乙丙橡膠的**主要缺點是硫化速度慢；與其它不飽和橡膠并用難，自粘和互粘性都很差，故加工性能不好。錦湖NR共混EPDM</p><p style="text-indent:25px">隨著我國橡塑的不斷發(fā)展，橡塑加工工藝也在不斷進(jìn)步，這些進(jìn)步徹底改變了以往傳統(tǒng)模具設(shè)計以及制造方式，為我國橡塑的進(jìn)一步發(fā)展打下了堅實的基礎(chǔ)。當(dāng)我們考慮抗塑性趨勢對紙漿和造紙工業(yè)的影響時，有許多化工原料及產(chǎn)品，橡膠，炭黑，色母粒，彈性體具有基于纖維的替代品。這些偏好促使品牌所有者用可再生和可回收的替代品替代塑料，并在可持續(xù)發(fā)展目標(biāo)中解決塑料問題。近年來，中國改性塑料行業(yè)隨著國民經(jīng)濟(jì)的穩(wěn)定健康發(fā)展而實現(xiàn)了跨越式發(fā)展，連續(xù)十年經(jīng)濟(jì)技術(shù)指標(biāo)穩(wěn)步較快遞增，但受到技術(shù)因素的制約，目前國內(nèi)改性塑料有限責(zé)任公司仍以中低端產(chǎn)品為主，**產(chǎn)品主要依賴進(jìn)口。在市場需求結(jié)構(gòu)和宏觀經(jīng)濟(jì)環(huán)境都發(fā)生顯著變化的大背景下，行業(yè)中不少企業(yè)不斷創(chuàng)新和嶄新面貌進(jìn)入新的發(fā)展階段，生產(chǎn)更符合市場需求的產(chǎn)品。錦湖NR共混EPDM</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(biāo)，有組織有體系的公司，堅持于帶領(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(xué)管理、創(chuàng)新發(fā)展、誠實守信的方針，員工精誠努力，協(xié)同奮取，以品質(zhì)、服務(wù)來贏得市場，我們一直在路上！</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2536647.html</p></div></div></div></div></div><div id="ba3qi8x" class="page-right twoColRt"><div id="qfxmdu2" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="3szlsug" 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(yīng)" class="vcenter" 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