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href="http://www.cdcfah.com/cp/third-xiangsu_qtflmw/">其他未分類</a>?KEP-5560錦湖質(zhì)量保證 **** 上海君宜化工供應(yīng)</p><div id="3efw7tf" class="leftbox clearfix"><h1>KEP-5560錦湖質(zhì)量保證 **** 上海君宜化工供應(yīng)</h1><div id="2bnjdoa" class="proBig"><div id="rxdpbxo" class="bigimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627878896484/8886818.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="tmdpl7k" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UploadFile/junyi/637206627878896484/8886818.jpg" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="8xjvrsj" 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>KEP-5560錦湖質(zhì)量保證,錦湖</p><p><span>***更新：</span>2020-12-15 02:02:13</p><p><span id="click" >瀏覽次數(shù)：2次</span></p><a rel="nofollow" class="button">聯(lián)系我們</a></div></div><div id="bpgxy3n" 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: </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="enearcy" class="page-proshow02"><p class="title">詳細說明</p><div id="8zv2drn" class="box"><p><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(xiàn)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(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，KEP-5560錦湖質(zhì)量保證，KEP-5560錦湖質(zhì)量保證、耐天候性，KEP-5560錦湖質(zhì)量保證、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(lián)，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。乙丙橡膠缺點是在室溫下粘度不好，給加工制造帶來困難。KEP-5560錦湖質(zhì)量保證</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-5560錦湖質(zhì)量保證,錦湖" src="http://tyunfile.71360.com/UploadFile/junyi/637206627878896484/8886818.jpg"></div><p> EPDM生膠選擇原則 </p> <p> 良好填充性：高門尼粘度，高乙烯含量 </p> <p> 開煉機容易包輥不粘輥：分子量分布寬一些，比較好是充油的牌號 </p> <p> 密煉機混煉性能優(yōu)異：生膠選擇范圍較寬；在填充容量方面：低硬度膠料可以多填充5~10%，高硬度膠料少填充5~10%。 </p> <p> 容易擠出喂料：選擇高乙烯含量 </p> <p> 擠出和壓延速度快：高乙烯含量，分子量分布寬一些 </p> <p> 擠出時口型膨脹低：門尼粘度不宜過高 </p> <p> 抗塌陷性好：高門尼粘度，高乙烯含量 </p> <p> 與金屬、纖維等粘合性好：低乙烯含量，低充油量，中~高ENB含量 </p> <p> 沖模（流動）性好：門尼粘度和ENB含量不宜過高 </p> <p> 與IIR并用：低ENB含量牌號 </p> <p> 與二烯烴類橡膠并用：高ENB含量牌號 </p> <p> 海綿發(fā)泡：高門尼粘度、充油品級、高ENB含量 </p> <p> 低硬度：充油牌號，高門尼粘度，中~高乙烯含量 </p> <p> 高硬度：高乙烯含量，低門尼粘度 </p> <p> **度，高抗撕:高門尼粘度 </p> <p> 低壓縮長久變形:高門尼粘度，中高ENB含量 </p> <p> 低溫性能：低乙烯含量，中等ENB含量 </p> <p> 室溫~高溫：高門尼，高ENB含量 </p> <p> 高回彈性能：低乙烯含量，中~高門尼粘度，中~高ENB含量 </p> <p> 耐熱性：低充油量，低ENB含量 </p> <p> 耐油性：高門尼粘度，高乙烯含量，高ENB含量錦湖KUMHO充油三元乙丙膠接枝改性是改善乙丙橡膠性能缺點的重要途徑之一，也為制備綜合性能更優(yōu)異的改性乙丙橡膠提供了可能。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-5560錦湖質(zhì)量保證,錦湖" src="http://tyunfile.71360.com/UploadFile/junyi/637206627875976562/5053802.jpg"></div><p style="text-indent:25px">Ａ.Ｅｓｔｒｉｎ等用馬來酸酐聚丁二烯（ＰＢＤＭＡ）處理芳綸、尼龍聚酯和棉等纖維，結(jié)果**提搞這些短纖維在ＥＰＤＭ的黏合作用。岑蘭等探討了幾種硅烷偶聯(lián)劑預(yù)處理棉短纖維（ＳＣＦ）種類、取向和用量對短纖維／橡膠復(fù)合材料（ＳＦＲＣ）力學性能和老化性能的影響。研究結(jié)果表明：與未處理ＳＣＦ相比，硅烷偶聯(lián)劑預(yù)處理的ＳＣＦ．具有更佳的補強性能，ＳＦＲＣ的拉伸強度、撕裂強度和扯斷伸長率更高。其中，硅烷偶聯(lián)劑ＫＨ-５７０（３-氨丙基三乙氧基硅烷）和ＫＨ-５８０（３-巰丙基三乙氧基硅烷）處理ＳＣＦ對ＥＰＤＭ的增***果更為明顯。吳衛(wèi)東等比較了表面特殊處理、常規(guī)此理和未處理的尼龍纖維對ＥＰＤＭ／尼龍復(fù)合材料性能影響，結(jié)果表明，經(jīng)表面特殊處理的ＳＦＲＣ屈服強度**提高，拉伸斷裂后纖維表面存在一定厚度且柔韌的界面過渡薄層。</p><p style="text-indent:25px">接枝改性是改善乙丙橡膠性能缺點的重要途徑之一，也為制備綜合性能更優(yōu)異的改性乙丙橡膠提供了可能。乙丙橡膠的接枝改性就是通過在其分子主鏈上接枝含有特征官能團的極性支鏈單體，提高聚烯烴基體與其它極性成分界面的結(jié)合力，使其它極性材料得以均勻分散，提高材料的物理性能及產(chǎn)品的性能穩(wěn)定性，從而改善乙丙橡膠的自粘性、互粘性以及相容性。接枝改性乙丙橡膠主要用于改善乙丙橡膠與其它材料的結(jié)合強度、相容性、填料界面的結(jié)合、制品韌性、沖擊強度、低溫脆性及耐熱性等。乙丙橡膠接枝改性技術(shù)主要包括溶液接枝法、熔融接枝法等，近年來又發(fā)現(xiàn)了電子束輻射接枝和直接溶脹接枝等新的接枝方法，為乙丙橡膠接枝改性提供了更***的技術(shù)可行性。三元乙丙橡膠是一種密度較低的橡膠，其密度為0.87。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="KEP-5560錦湖質(zhì)量保證,錦湖" src="http://tyunfile.71360.com/UpLoadFile/junyi/2019/7/637000841074070253/6370008410740702531157159.JPG"></div><p> 乙丙膠與高不飽和膠種并用二： </p> <p> 在拉斷強度降低幅度比較大的并用比時（ＥＰＤＭ／ＮＲ＝７５／２５）碘值與拉斷強度的關(guān)系。拉斷強度隨碘值增大而直線上升，這說明通過提高碘值可以改善并用膠的共硫化性，至于第三單體的效果，在同一碘值下進行的比較表明，硫化速度快的乙叉降冰片烯ＥＰＤＭ膠共硫化性遠為優(yōu)越，但決定的因素還是碘值。其次，調(diào)節(jié)硫化的特性也是有力的措施，并用膠的拉斷強度隨硫化促進劑種類的不同而有明顯的差異，采用低速促進劑時的拉斷強度比采用超速促進劑高得多，硫化速度（Ｖ）和硫化速度常數(shù)（Ｋ）與高不飽和橡膠的相應(yīng)值越接近越好。 </p> <p> 炭黑的影響如下：補強性越大，則拉斷強度越高，不同摻和方法的并用膠物理性能不同中兩種方法：一種為生膠摻和法，即先將生膠相互摻和，然后再加配合劑。另一種為母煉膠摻和法：系兩種生膠先分別加配合劑，***將兩種膠料摻和，性能以后者為佳。 </p> <p> <br /> 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。錦湖KUMHO充油三元乙丙膠</p><p style="text-indent:25px">三元乙丙橡膠的分子量及分布可以通過凝膠滲透色譜法使用二氯苯作為溶劑在高溫下（150℃）測量而得。KEP-5560錦湖質(zhì)量保證</p><p> 8. EPDM密封條 </p> <p> 乙丙橡膠耐老化性好。它是乙烯和丙烯在催化劑作用下共聚而成。該品具有良好的化學穩(wěn)定性、耐熱性、耐酸、耐堿性、耐寒性。對于高壓蒸汽和磷酸脂系用乙丙膠制密封件可得到十分滿意的效果。在礦物油中不宜使用，因易泡漲。乙丙橡膠缺點是在室溫下粘度不好，給加工制造帶來困難。硫化時間也長，為此人們研究了三元乙丙膠，即在橡膠分子側(cè)鏈中引進不飽和鍵，所以可以用硫磺硫化，同時也便于加工。乙丙橡膠綜合物理機械性能介于天然膠與丁苯膠之間，與丁基橡膠類似。使用溫度 -45~1 50℃。在一般的橡膠制品中，乙丙膠件使用壽命**長。目前密封條市場主要以三元乙丙（ EPDM ）橡膠為主，且先后被應(yīng)用到門窗、機柜、汽車等各種行業(yè)，根據(jù)不同行業(yè)的要求，先后研發(fā)出了特有的門窗密封條、機柜密封條、汽車密封條等產(chǎn)品。 KEP-5560錦湖質(zhì)量保證</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，以科技創(chuàng)新實現(xiàn)***管理的追求。上海君宜化工作為化工原料及產(chǎn)品（除危險化學品，監(jiān)控化學品，煙花爆竹，民用物品，易制毒化學品），橡塑制品，輪胎，五金交電，日用百貨，化妝品，健身器材，儀器儀表，機械設(shè)備，機電設(shè)備，計算機，軟件及輔助設(shè)備銷售，從事化工，健身器材科技領(lǐng)域內(nèi)的技術(shù)開發(fā)，技術(shù)咨詢，技術(shù)服務(wù)，技術(shù)轉(zhuǎn)讓，電器工程安裝，自動化控制設(shè)備安裝，調(diào)試，維修，機電安裝建設(shè)工程施工，工程自動化設(shè)備安裝維修及，工業(yè)自動化控制系統(tǒng)工程，商務(wù)信息咨詢。的企業(yè)之一，為客戶提供良好的化工原料及產(chǎn)品，橡膠，炭黑，色母粒，彈性體。上海君宜化工始終以本分踏實的精神和必勝的信念，影響并帶動團隊取得成功。上海君宜化工始終關(guān)注自身，在風云變化的時代，對自身的建設(shè)毫不懈怠，高度的專注與執(zhí)著使上海君宜化工在行業(yè)的從容而自信。</p></p><br /><p>文章來源地址: 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