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<meta http-equiv="Cache-Control" content="no-siteapp" /> <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 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class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/xjxj/2019/9/637042306004858666/6370423060048586662455908.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="7xni9tp" class="smallimg"><div><p class="pic"><img src="http://tyunfile.71360.com/UpLoadFile/xjxj/2019/9/637042306004858666/6370423060048586662455908.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="q2r9xni" 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)品關鍵詞：</span>浙江橡膠產(chǎn)品專業(yè)團隊在線服務,橡膠產(chǎn)品</p><p><span>***更新：</span>2020-06-13 09:13:10</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="cmxngl8" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海西郊橡膠制品廠</a></p><p><span>聯(lián)系人：</span>盧少云</p><p><span>郵箱: </span>lu_shaoyun@xjrubber.net</p><p><span>電話: </span>13901626589</p><p><span>傳真: </span>021_59760772</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>021-59760772</p><p><span>地址: </span>上海市青浦區(qū)徐涇鎮(zhèn)華徐公路88 號2幢</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="boz8nyo" class="page-proshow02"><p class="title">詳細說明</p><div id="3opz4ai" class="box"><p><p style="text-indent:25px">六、硫化把塑性橡膠轉化為彈性橡膠的過程叫做硫化它是將一定量的硫化劑如硫磺、硫化促進劑等加入到由生膠制成的半成品中在硫化罐中進行在規(guī)定的溫度下加熱、保溫使生膠的線性分子間通過生成"硫橋"而相互交聯(lián)成立體的網(wǎng)狀結構從而使塑性的膠料變成具有高彈性的硫化膠。由于交聯(lián)鍵主要是由硫磺組成所以稱為"硫化"。隨著合成橡膠的迅速發(fā)展現(xiàn)在硫化劑的品種很多除硫磺外還有有機多硫化物、過氧化物，浙江橡膠產(chǎn)品專業(yè)團隊在線服務、金屬氧化物等，浙江橡膠產(chǎn)品專業(yè)團隊在線服務。因此凡是能使線狀結構的塑性橡膠轉化為立體網(wǎng)狀結構的彈性橡膠的工藝過程都叫硫化凡能在橡膠材料中起"搭橋"作用的物質都稱為"硫化劑"。硫化后的彈性橡膠叫硫化橡膠又叫軟橡膠俗稱"橡膠"。硫化是橡膠加工的一個**為重要的工藝過程各種橡膠制品必須經(jīng)過硫化來獲得理想的使用性能。未經(jīng)硫化的橡膠在使用上是沒有什么使用價值的，浙江橡膠產(chǎn)品專業(yè)團隊在線服務,但欠硫硫化程度不夠?硫化時間不夠未能達到比較好狀態(tài)和過硫硫化時間超過、性能***下降都使橡膠性能下降。所以生產(chǎn)過程中一定要嚴格控制硫化時間?以保證硫化后的橡膠制品具有比較好的使用性能和**長久的使用壽命。浙江橡膠產(chǎn)品專業(yè)團隊在線服務</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江橡膠產(chǎn)品專業(yè)團隊在線服務,橡膠產(chǎn)品" src="http://tyunfile.71360.com/UpLoadFile/xjxj/2019/9/637042306004858666/6370423060048586662455908.png"></div><p style="text-indent:25px">一、基本工藝流程橡膠制品種類繁多，但生產(chǎn)工藝過程卻基本相同。以一般固體橡膠--生膠為原料的橡膠制品的基本工藝過程包括:塑煉、混煉、壓延、壓出、成型、硫化6個基本工序。當然，原材料準備、成品整理、檢驗包裝等基本工序也少不了。橡膠的加工工藝過程主要是解決塑性和彈性性能這個矛盾的過程。通過各種工藝手段，使得彈性的橡膠變成具有塑性的塑煉膠，再加入各種配合劑制成半成品，然后通過硫化使具有塑性的半成品又變成彈性高、物理機械性能好的橡膠制品。江蘇橡膠產(chǎn)品價格</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江橡膠產(chǎn)品專業(yè)團隊在線服務,橡膠產(chǎn)品" src="http://tyunfile.71360.com/UpLoadFile/xjxj/2019/9/637042306479930900/6370423064799309009196644.png"></div><p> 硅橡膠外觀呈透明或乳白色粒狀固體，具有開放的多孔結構,吸附性強,能吸附多種物質。如吸收水分,吸濕量約達40%。如加入氯化鈷,干燥時呈藍色,吸水后呈紅色?？稍偕磸褪褂?。一般來說，硅橡膠按其性質及組分可分為有機和無機兩大類。無機是一種高活性吸附材料，通常是用硅酸鈉和反應，并經(jīng)老化、酸泡等一系列后處理過程而制得。屬非晶態(tài)物質。不溶于水和任何溶劑，無味，化學性質穩(wěn)定，除強堿、氫氟酸外不與任何物質發(fā)生反應。各種型號的因其制造方法不同而形成不同的微孔結構。硅橡膠的優(yōu)點非常突出且其他產(chǎn)品無法取代，硅橡膠吸附性能高、熱穩(wěn)定性好、化學性質穩(wěn)定、有較高的機械強度等。比表面積研究是非常重要的，比表面積檢測數(shù)據(jù)只有采用BET方法檢測出來的結果才是真實可靠的，國內目前有很多儀器只能做直接對比法的檢測，現(xiàn)在國內也被淘汰了。比表面積檢測其實是比較耗費時間的工作，由于樣品吸附能力的不同，有些樣品的測試可能需要耗費一整天的時間，如果測試過程沒有實現(xiàn)完全自動化，那測試人員就時刻都不能離開，并且要高度集中，觀察儀表盤，操控旋鈕，稍不留神就會導致測試過程的失敗。</p><p style="text-indent:25px">五、成型在橡膠制品的生產(chǎn)過程中利用壓延機或壓出機預先制成形狀各式各樣、尺寸各不相同的工藝過程?稱之為成型。成型的方法有 1.壓延成型適用于制造簡單的片狀、板狀制品。它是將混煉膠通過壓延機壓制成一定形狀、一定尺寸的膠片的方法叫壓延成型。有些橡膠制品?如輪胎、膠布、膠管等所用紡織纖維材料必須涂上一層薄膠在纖維上涂膠也叫貼膠或擦膠??涂膠工序一般也在壓延機上完成。纖維材料在壓延前需要進行烘干和浸膠烘干的目的是為了減少纖維材料的含水量以免水分蒸發(fā)起泡?和提高纖維材料的溫度以保證壓延工藝的質量。浸膠是掛膠前的必要工序目的是為了提高纖維材料與膠料的結合性能。 2.壓出成型用于較為復雜的橡膠制品?象輪胎胎面、膠管、金屬絲表面覆膠需要用壓出成型的方法制造。它是把具有一定塑性的混煉膠放入到擠壓機的料斗內在螺桿的擠壓下通過各種各樣的口型也叫樣板進行連續(xù)造型的一種方法。壓出之前膠料必須進行預熱使膠料柔軟、易于擠出從而得到表面光滑、尺寸準確的橡膠制品。 3.模壓成型也可以用模壓方法來制造某些形狀復雜如皮碗、密封圈的橡膠制品?借助成型的陰、陽模具將膠料放置在模具中加熱成型。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="浙江橡膠產(chǎn)品專業(yè)團隊在線服務,橡膠產(chǎn)品" src="http://tyunfile.71360.com/UpLoadFile/xjxj/2019/9/637042306641656081/6370423066416560818263397.png"></div><p style="text-indent:25px">三、塑煉生膠富有彈性,缺乏加工時必需的可塑性性能,因此不便于加工。為了提高其可塑性,所以要對生膠進行塑煉,這樣在混煉時配合劑就容易均勻分散在生膠中,同時在壓延、成型過程中也有助于提高膠料的滲透性滲入纖維織品內和成型流動性。將生膠的長鏈分子降解形成可塑性的過程叫做塑煉。生膠塑煉的方法有機械塑煉和熱塑煉兩種。機械塑煉是在不太高的溫度下通過塑煉機的機械擠壓和摩擦力的作用使長鏈橡膠分子降解變短由高彈性狀態(tài)轉變?yōu)榭伤軤顟B(tài)。熱塑煉是向生膠中通入灼熱的壓縮空氣在熱和氧的作用下使長鏈分子降解變短從而獲得可塑性。浙江橡膠產(chǎn)品專業(yè)團隊在線服務</p><p style="text-indent:25px">浙江橡膠產(chǎn)品專業(yè)團隊在線服務</p><p style="text-indent:25px">3.橡膠產(chǎn)品是由橡膠原料進行密煉機煉膠后制成的混煉膠作原材料，在煉膠時根據(jù)所需橡膠制品的特性而設計配方，并且定下所需要的產(chǎn)品硬度。產(chǎn)品制作成型由橡膠平板硫化機進行模壓成型。產(chǎn)品成型后***進行飛邊處理，把產(chǎn)品表面處理光滑無毛刺。 4.橡膠制品老化測試屬于老化測試范疇，橡膠老化是指橡膠及制品在加工，儲存和使用過程中，由于受到內外因素的綜合作用引起性能結構發(fā)生改變，進而喪失使用價值的現(xiàn)象。表現(xiàn)為龜裂，發(fā)粘，硬化，軟化，粉化，變色，長霉等。浙江橡膠產(chǎn)品專業(yè)團隊在線服務</p><p style="text-indent:25px">上海西郊橡膠制品廠在橡塑這一領域傾注了無限的熱忱和激情，西郊橡膠一直以客戶為中心、為客戶創(chuàng)造價值的理念、以品質、服務來贏得市場，衷心希望能與社會各界合作，共創(chuàng)成功，共創(chuàng)輝煌。相關業(yè)務歡迎垂詢。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/243900.html</p></div></div></div></div></div><div id="3pk383l" class="page-right twoColRt"><div id="ybcybw3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="vtpqon8" 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" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></div><p>福建ZF配件哪家強信息推薦自業(yè)物資供應</p></a></div><div id="lnekxsd" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/846569.html"><div><img 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