KEP-902N錦湖供應(yīng)商值得信賴上海君宜化工供應(yīng)-b2b網(wǎng)站_b2b電子商務(wù)平臺(tái)【買產(chǎn)品】-上?？谄蚴称酚邢薰?/title><meta name="description" content="2.EPDM在液壓制動(dòng)用軟管和圓密封圈中的應(yīng)用利用EPDM耐制動(dòng)液（DOT3、DOT4、DOT5（硅油基））的特性，用于液壓制動(dòng)軟管內(nèi)膠層和制動(dòng)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(dòng)液，使用溫度在-40℃～120℃之間"><meta name="keywords" content="KEP-902N錦湖供應(yīng)商,錦湖"><link rel="canonical" href="http://www.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" 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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-902N錦湖供應(yīng)商,錦湖</p><p><span>***更新：</span>2020-12-16 10:04:19</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="v37wiel" 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(wàn)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="qh83agx" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="2sg282m" class="box"><p><p> 2. EPDM在液壓制動(dòng)用軟管和圓密封圈中的應(yīng)用 </p> <p> 利用EPDM耐制動(dòng)液（DOT3、DOT4、DOT5（硅油基））的特性，用于液壓制動(dòng)軟管內(nèi)膠層和制動(dòng)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(dòng)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(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2.5～4MPa；在伸長(zhǎng)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%，KEP-902N錦湖供應(yīng)商，72h）應(yīng)無(wú)裂紋；制動(dòng)液試驗(yàn)（將試樣放于制動(dòng)液中，150℃，70h）其硬度變化應(yīng)為5，KEP-902N錦湖供應(yīng)商，拉伸強(qiáng)度變化應(yīng)為±20%，伸長(zhǎng)率變化應(yīng)為-15%～20%，體積改變應(yīng)在±5%；熱化試驗(yàn)（125℃，70h），其硬度變化應(yīng)為±5，KEP-902N錦湖供應(yīng)商，拉伸強(qiáng)度變化應(yīng)為±15%，伸長(zhǎng)率的下降不能超過(guò)15%。三元乙丙橡膠制品在120℃下可長(zhǎng)期使用，在150～200℃下可短暫或間歇使用。KEP-902N錦湖供應(yīng)商</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-902N錦湖供應(yīng)商,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000842428031661/6370008424280316619947092.JPG"></div><p> EPDM配方設(shè)計(jì)的方法 </p> <p> a.關(guān)于村科的種類 </p> <p> 此概念的基礎(chǔ)上采取添加所需材料的方法。追求“簡(jiǎn)單的就是比較好的"這排除計(jì)量失誤發(fā)生的可能性，材料的種類是越少越好。為便于在場(chǎng)進(jìn)行原材料管理，以由于近來(lái)各材料生產(chǎn)商都在不斷地開(kāi)發(fā)新材料，村料也就在所難免。因此使用橡膠產(chǎn)品要求性能上年然而，在不能準(zhǔn)確把任何時(shí)候添加材料，都可能成為泄漏、起霜等負(fù)面因素。把握村料效果的情況下，比較好不要盲目地河地添加材料。 </p> <p> 漫合設(shè)計(jì)時(shí)適宜的材料種類 </p> <p> 聚合體3種以下 </p> <p> 碳/黑 2種以下 </p> <p> 填充物 2種以下 </p> <p> 軟化劑可塑劑 2種以下 </p> <p> 加工助劑 2種以下 </p> <p> 抗老化劑 2種以下 </p> <p> 促進(jìn)劑(丁晴橡膠混合) 3種以下 </p> <p> 促進(jìn)劑(三元乙丙橡膠般混合) 4種以下 </p> <p> b.關(guān)于材料的添加量 </p> <p> “比較低添加量比較好為0.2phr以上”其理由在于，在現(xiàn)場(chǎng)使用大型機(jī)械進(jìn)行混煉操作時(shí)，經(jīng)常發(fā)生分散不充分的情況并且如添加量少，將會(huì)發(fā)生分散不均勻的現(xiàn)象。 </p> <p> 如果不得已要添加0.1phr以下的量時(shí)，需要事先完全與材料混合，使?jié)舛冉档?，此外，氧化鋅的比重為5.6左右時(shí)，雖然重量份數(shù)為5Phr.但容量份數(shù)為0.891通常添加量不需要5Phr,比較好是添加3Phr以上，在進(jìn)行硫化過(guò)程中，當(dāng)內(nèi)模被行財(cái)，可以考慮混合少量的氧化鋅，但這時(shí)比較好添加活性氧化鋅活性氧化鋅)。 KEP-5770錦湖服務(wù)為先利用EPDM耐制動(dòng)液（DOT3、DOT4、DOT5（硅油基））的特性，用于液壓制動(dòng)軟管內(nèi)膠層和制動(dòng)泵中密封圈的制作。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-902N錦湖供應(yīng)商,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000842155770975/6370008421557709756182734.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(guò)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(guò)氧化物的作用下，ＺＤＭＡ從微米顆粒上脫落下來(lái)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(guò)過(guò)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(guò)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> 乙丙橡膠化學(xué)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(diǎn)，但存在強(qiáng)度低、自粘性及互粘性差，與其他膠種并用時(shí)，共混相溶性不好等缺點(diǎn)。為了制備綜合性能更優(yōu)異的橡膠，在技術(shù)上常對(duì)乙丙橡膠進(jìn)行極化改性。改性乙丙橡膠主要是將乙丙橡膠進(jìn)行溴化、氯化、磺化、順酐化、馬來(lái)酸酐化等。乙丙橡膠還通過(guò)接枝方法進(jìn)行改性，以解決乙丙橡膠的分子主鏈為非極性飽和結(jié)構(gòu)存在的強(qiáng)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(shí)相容性差等性能缺點(diǎn)，從而拓展了乙丙橡膠在許多方面的應(yīng)用。過(guò)氧化物硫化膠有較好熱穩(wěn)定性和耐壓縮長(zhǎng)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。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-902N錦湖供應(yīng)商,錦湖" src="http://tyunfile.71360.com/UploadFile/junyi/637206627881503906/5210430.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(kāi)發(fā)后發(fā)展起來(lái)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(xiàn)了新型聚合催化劑，于是采用立體有規(guī)性催化劑進(jìn)行烯烴聚合的研究逐漸開(kāi)展起來(lái)，特別是將石油所大量產(chǎn)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(xiàn)出橡膠彈性。這種聚合物的特點(diǎn)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(jià)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(xué)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(lián)，但在１９６２年通過(guò)加入第三單體的方法而使它變成可用硫黃硫化的橡膠。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(dòng)性。錦湖KUMHONR共混三元乙丙膠</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(lián)聚乙烯。KEP-902N錦湖供應(yīng)商</p><p> 8.輪胎用EPDM選擇胎側(cè)：輪胎胎側(cè)是輪胎側(cè)向變形比較大的部位,又與大氣直接接觸,要求膠料的耐屈撓性能、耐臭氧性能和耐天候老化性能良好。在胎側(cè)膠配方中添加少量防護(hù)蠟可對(duì)輪胎胎側(cè)起靜態(tài)防護(hù)作用,但在動(dòng)態(tài)條件下防護(hù)作用**減弱,輪胎在使用一段時(shí)間后胎側(cè)仍會(huì)出現(xiàn)大量龜裂。EPDM具有突出的耐臭氧性能、耐天候性能和耐熱性能，并用少量的EPDM可以***提高胎側(cè)的耐臭氧、耐候性能和耐裂口增長(zhǎng)性能。推薦牌號(hào)：錦湖KEP5560推薦理由：窄分子量分布，超高的ENB含量，硫化速度快，用于輪胎制品時(shí)能夠很好的與NR、SBR等二烯類橡膠共混，保證良好的物理性能內(nèi)胎：因具有良好的氣密性能和耐熱性能而在輪胎內(nèi)胎中得到廣泛應(yīng)用"但其加工性能較差存在膠料收縮大&滯后生熱大和加油后易粘輥等問(wèn)題并且老化時(shí)分子鏈傾向于斷裂導(dǎo)致使用后期膠料發(fā)粘嚴(yán)重時(shí)造成內(nèi)外胎粘在一起。 KEP-902N錦湖供應(yīng)商</p><p style="text-indent:25px">上海君宜化工銷售中心（有限合伙）致力于橡塑，是一家貿(mào)易型公司。公司自成立以來(lái)，以質(zhì)量為發(fā)展，讓匠心彌散在每個(gè)細(xì)節(jié)，公司旗下化工原料及產(chǎn)品，橡膠，炭黑，色母粒，彈性體深受客戶的喜愛(ài)。公司從事橡塑多年，有著創(chuàng)新的設(shè)計(jì)、強(qiáng)大的技術(shù)，還有一批**的專業(yè)化的隊(duì)伍，確保為客戶提供良好的產(chǎn)品及服務(wù)。上海君宜化工立足于全國(guó)市場(chǎng)，依托強(qiáng)大的研發(fā)實(shí)力，融合前沿的技術(shù)理念，飛快響應(yīng)客戶的變化需求。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/2429296.html</p></div></div></div></div></div><div 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