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class="container clearfix tcPro"><section class="home-main container clearfix"><div id="ocelneg" class="twoCol"><div id="2sj8wta" class="page-proshow clearfix"><p class="current"> 當(dāng)前位置:<a href="http://www.cdcfah.com/">首頁?<a href="http://www.cdcfah.com/cp/">產(chǎn)品供應(yīng)</a>?<a href="http://www.cdcfah.com/cp/first-_jxhxp/">精細化學(xué)品</a>?<a href="http://www.cdcfah.com/cp/second-jxhxp_jsjgzj/">金屬加工助劑</a>?<a href="http://www.cdcfah.com/cp/third-jsjgzj_jsqxj/">金屬清洗劑</a>?余姚脫脂劑報價值得信賴上海昊琳化工供應(yīng)</p><div id="32ctvhy" class="leftbox clearfix"><h1>余姚脫脂劑報價值得信賴上海昊琳化工供應(yīng)</h1><div id="gkh8ugx" class="proBig"><div id="84prtv3" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333784186044922/7495406.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="cwy4ov8" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/haolin123/637333784186044922/7495406.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="l32tvcj" 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>余姚脫脂劑報價,脫脂劑</p><p><span>***更新：</span>2020-11-12 07:21:40</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="k222vmo" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海昊琳化工有限公司</a></p><p><span>聯(lián)系人：</span>彭**</p><p><span>郵箱: </span>SHHL668@163.com</p><p><span>電話: </span>13917612469</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://haolin123.shop.88360.com</p><p><span>手機: </span>021-59220920</p><p><span>地址: </span>白鶴鎮(zhèn)白石公路1360路28號</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="p8u23v8" class="page-proshow02"><p class="title">詳細說明</p><div id="h3ra7fp" class="box"><p><p style="text-indent:25px">脫脂劑的消泡性能：將試液倒人100mL具塞量筒內(nèi)使液面距離塞下端面70mL，蓋塞，在30℃±2℃的水浴或電烘箱中放置10min取出，立即上下?lián)u動1min，上下?lián)u動的距離為0.33m，頻率為100～110次／min，搖動完畢后，打開簡塞，余姚脫脂劑報價，盛試液的量筒置于30℃±2℃的水浴或電烘箱中靜置10min，觀察泡沫消失情況，記下殘留泡沫高度(應(yīng)為泡沫高、低值的平均數(shù))。脫脂也稱除油，金屬表面除油是表面處理工程中的重要環(huán)節(jié)，也是金屬表面處理的一道工序。脫脂是否徹底對整個產(chǎn)品的質(zhì)量和壽命至關(guān)重要。影響脫脂質(zhì)量的主要有四個因素：脫脂溫度，脫脂時間，余姚脫脂劑報價，余姚脫脂劑報價，機械作用和脫脂劑。脫脂劑對于含有表面活性劑的堿液脫脂劑，比較有效的發(fā)揮洗凈作用是在表面活性劑的臨界膠束濃度的上限。余姚脫脂劑報價</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余姚脫脂劑報價,脫脂劑" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784186044922/7495406.png"></div><p style="text-indent:25px">脫脂劑中加入具有乳化油脂作用的表面活性劑就變成了第二類乳化脫脂劑。在無機鹽、堿(例如碳酸鈉、氫氧化鈉)的協(xié)同作用下，表面活性劑將油脂乳化并分散到水當(dāng)中，使金屬表面油脂得以去除。脫脂劑是置換型脫脂劑。其組成與第二類乳化脫脂劑大同小異。區(qū)別在于表面活性劑的不同。這類脫脂劑具有很強的滲透能力。它先是靠表面活性分子滲透到油脂與金屬表面并將其隔開。油脂在重力的作用下脫離金屬界面浮出。脫脂劑的脫脂原理各不相同，但脫脂結(jié)果是一樣的。以經(jīng)濟角度分析，皂化脫脂的缺點是需要較高的溫度，能源浪費較大，一般要在70℃以上才能去油，且對礦物油效果很差。南通脫脂劑報價脫脂劑的消泡性能，消泡性能試驗主要是為了檢查水基脫脂劑溶液的泡沫消除能力。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余姚脫脂劑報價,脫脂劑" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784108935547/3139676.png"></div><p style="text-indent:25px">脫脂劑的性能檢測還有硬水穩(wěn)定性能，高低溫穩(wěn)定性和單片和疊片防銹性能。從脫脂劑的組成上將脫脂劑分為三類：一是有機脫脂劑，如煤油、汽油、三氯乙烯、四氯化碳等脫脂劑，這些脫脂劑只是粗脫脂，不能脫脂后直接龜鍍。第二類是水基脫脂劑，采用無機堿、鹽與表面活性劑組成。這類脫脂劑是電鍍脫脂劑的主體。第三類是無機和有機物的混合脫脂劑，又稱乳化液脫脂。它是以表面活性劑為主，加入煤油或汽油與水形成乳液，生產(chǎn)上應(yīng)用較少。</p><p style="text-indent:25px">化學(xué)性質(zhì)根據(jù)油污能否與脫脂劑發(fā)生化學(xué)反應(yīng)而分為可皂化油污和不可皂化油污。植物油脂和動物油脂是可皂化的，他們可以依靠皂化、乳化和溶解的作用脫除。礦物油和凡士林是不可皂化的，他們只能依靠乳化或溶解的作用來脫除。物理性質(zhì)根據(jù)油污黏度或滴落點的不同，其形態(tài)有液體和半固體。黏度越大或滴落點越高．清洗越困難。根據(jù)油污對基體金屬的吸附作用?？煞譃闃O性油污和非極性油污。極性油污，如含有脂肪酸和極性添加劑的油污，有強烈的吸附在基體金屬上的傾向，清洗較困難，要靠化學(xué)作用或較強的機械作用力來脫除。脫脂除油的工作復(fù)雜，影響面廣，在許多情況下要求清洗質(zhì)量嚴格，甚至要達到行業(yè)規(guī)定的標(biāo)準(zhǔn)。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="余姚脫脂劑報價,脫脂劑" src="https://tyunfile.71360.com/UploadFile/haolin123/637333784250039062/8363438.png"></div><p style="text-indent:25px">脫脂應(yīng)在露天或通風(fēng)良好的地方進行。工作人員應(yīng)有防毒保護措施，戴多層口罩和膠皮手套，穿圍裙與長統(tǒng)套靴。濃度大時還應(yīng)戴防毒面具。在連續(xù)工作8h的情況下，空氣中的四氯化碳含量不得超過0.05mg/L。脫脂現(xiàn)場嚴禁煙火。溶劑嚴禁與強酸接觸。溶劑應(yīng)保存在密封的容器內(nèi)，不得與堿接觸，以防變質(zhì)。需要脫脂的部件，在脫脂前不應(yīng)沾有水分。閥門脫脂時，應(yīng)解體在四氯化碳溶液中浸泡4～5min，不宜過久。脫脂后的零部件要用氮氣或干燥空氣吹干后才能組裝使用。否則易發(fā)生腐蝕、生銹。管式換熱器脫脂時，要嚴防四氯化碳積存在換熱管內(nèi)。特別是換熱管被焊錫等雜物堵塞時更要注意。在脫脂后應(yīng)用熱空氣將其吹除到無氣味為止。若在管內(nèi)有四氯化碳積存，投入運行后會凍結(jié)、膨脹，將管脹裂。同時，解凍后有水分存在時，會產(chǎn)生強烈的化學(xué)腐蝕，能把0.5mm厚的管蝕穿。在電鍍加工過程中，應(yīng)用比較多的還是水基脫脂劑。余姚脫脂劑報價</p><p style="text-indent:25px">浸泡脫脂是使用有攪拌、溶液循環(huán)等機械作用浸泡槽將已增加浸泡脫脂劑的脫脂液加溫到60℃就可進行脫脂清洗。余姚脫脂劑報價</p><p style="text-indent:25px">堿性化學(xué)脫脂劑除油機理:皂化作用：金屬表面油脂中的動植物油（主要成分是硬脂酸），與堿性化學(xué)脫脂劑中的堿生成硬脂酸鈉（即肥皂）和甘油溶解進入堿性溶液，俗稱皂化反應(yīng)，以除去金屬表面油脂。乳化作用：乳化劑為表面活性物質(zhì)，吸附在界面上，憎水基團向著金屬基體，親水基團溶液方向，使金屬與溶液間界面張力降低，從而在流體動力等因素的作用下，油膜破裂變成細小的珠狀，脫離金屬表面，到溶液中形成乳濁液。皂化與乳化作用是相輔相成的，相互配合才能徹底去除金屬表面油污。浸透潤濕作用：皂化與乳化作用均系從油污表面逐步進行，而使含堿性化學(xué)脫脂劑的堿性溶液浸透油脂內(nèi)部，達到并潤濕工件表面，增進了脫脂除油的效果，這就是表面活性劑的浸透潤濕作用。此外還仍具有分散作用，將從工件除下的油脂分散到脫脂液之中。余姚脫脂劑報價</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/1957826.html</p></div></div></div></div></div><div id="mipolcj" class="page-right twoColRt"><div id="zjg4zv3" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="dhuegxj" 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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