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href="http://www.cdcfah.com/cp/">產(chǎn)品供應</a>?<a href="http://www.cdcfah.com/cp/second-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/third-huagong_qitajuhewu/">其他聚合物</a>?青海異氰酸酯工程誠信服務成都成英科技供應</p><div id="zjip2ae" class="leftbox clearfix"><h1>青海異氰酸酯工程誠信服務成都成英科技供應</h1><div id="xgdpwi4" class="proBig"><div id="oxebyf9" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/cdcykj/637281753986855468/1640013.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="nmyfc3w" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/cdcykj/637281753986855468/1640013.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="od7jnjd" 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>四川省</p><p><span>包裝要求：</span><span style="color: #f30;"></span></p><p><span>產(chǎn)品關鍵詞：</span>青海異氰酸酯工程,異氰酸酯</p><p><span>***更新：</span>2021-02-04 09:16:52</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="dcu8q3k" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">成都成英科技有限公司</a></p><p><span>聯(lián)系人：</span>何英</p><p><span>郵箱: </span>cykj789@sina.com</p><p><span>電話: </span>13558781838</p><p><span>傳真: </span>135_</p><p><span>網(wǎng)址: </span></p><p><span>手機: </span>135-58781838</p><p><span>地址: </span>龍橋鎮(zhèn)山水村3組201號</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="rb2myfe" class="page-proshow02"><p class="title">詳細說明</p><div id="td77zhw" class="box"><p><p> 單異氰酸酯是有機合成的重要中間體，可制成一系列氨基甲酸酯類殺蟲劑、殺菌劑、除草劑，也用于改進塑料、織物、皮革等的防水性。二官能團及以上的異氰酸酯可用于合成一系列性能優(yōu)良的聚氨酯泡沫塑料、橡膠、彈力纖維、涂料、膠粘劑、合成革、人造木材等。目前應用**廣、產(chǎn)量比較大的是有：甲苯二異氰酸酯（TolueneDiisocyanate，簡稱TDI）；二苯基甲烷二異氰酸酯（MethylenediphenylDiisocyanate，簡稱MDI）。甲苯二異氰酸酯（TDI）為無色有強烈刺鼻味的液體，沸點251°C，比重，遇光變黑，對皮膚、眼睛有強烈刺激作用，并可引起濕疹與支氣管***，主要用于聚氨酯泡沫塑料、涂料、合成橡膠，青海異氰酸酯工程、絕緣漆，青海異氰酸酯工程，青海異氰酸酯工程、粘合劑等。（HDI）。無色清亮液體, 有強刺激性。青海異氰酸酯工程</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海異氰酸酯工程,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281753986855468/1640013.png"></div><p> 異氰酸酯是異氰酸的各種酯的總稱。若以-NCO基團的數(shù)量分類，包括單異氰酸酯R-N=C=O和二異氰酸酯O=C=N-R-N=C=O及多異氰酸酯等。常見的二異氰酸酯包括甲苯二異氰酸酯(TDI)、異佛爾酮二異氰酸酯(IPDI)、二苯基甲烷二異氰酸酯(MDI)、二環(huán)己基甲烷二異氰酸酯(HMDI)、六亞甲基二異氰酸酯(HDI)、賴氨酸二異氰酸酯(LDI)。異氰酸酯用途：單異氰酸酯是有機合成的重要中間體，可制成一系列氨基甲酸酯類殺蟲劑、殺菌劑、除草劑，也用于改進塑料、織物、皮革等的防水性。二官能團及以上的異氰酸酯可用于合成一系列性能優(yōu)良的聚氨酯泡沫塑料、橡膠、彈力纖維、涂料、膠粘劑、合成革、人造木材等。青海異氰酸酯工程異氰酸酯主要用于合成纖維。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海異氰酸酯工程,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281755704511718/3883311.png"></div><p> 異氰酸酯是異氰酸各種酯類的總稱，是一種具有特殊氣味的液體。異氰酸酯產(chǎn)品類型主要包括單異氰酸酯、二異氰酸酯、多異氰酸酯等，被廣泛應用在制鞋、家具、家電、汽車、建筑、塑料、膠粘劑、農(nóng)藥等領域。全球異氰酸酯需求持續(xù)增長，拉動異氰酸酯產(chǎn)量持續(xù)提升，21世紀以來，我國經(jīng)濟快速發(fā)展，對異氰酸酯的需求快速上升，國內(nèi)異氰酸酯產(chǎn)能的增長進一步帶動全球異氰酸酯產(chǎn)業(yè)規(guī)模擴大。異氰酸酯產(chǎn)品類型中，單異氰酸酯是重要的有機合成中間體，可用于制造殺蟲劑、除菌劑、除草劑等領域；二異氰酸酯與多異氰酸酯可用于塑料、橡膠、纖維、涂料、膠粘劑等制造領域?，F(xiàn)階段，我國以及全球市場中，需求量比較大的異氰酸酯細分產(chǎn)品主要是甲苯二異氰酸酯（TDI）和二苯基甲烷二異氰酸酯（MDI）。 </p><p style="text-indent:25px">在聚氨酯預聚體和成中，由于種種原因尚有部分異氰酸酯單體未能進行反應，而呈游離狀況，這種游離態(tài)異氰酸酯的存在，不僅影響PU材料的性能及工藝操作，同時還污染環(huán)境，對加工者造成一定損傷。針對這一問題，德國朗盛（原科聚亞）研究的低游離異氰酸酯（LF）預聚體中游離異氰酸酯的含量低于0.1%，不僅改善職業(yè)健康和安全，還具有粘度低，凝膠時間長、脫?？?，澆注加工效率高的特點，提高PU制品的撓曲壽命和動態(tài)性能，降低內(nèi)生熱。低游離系列產(chǎn)品尤其可幫助客戶生產(chǎn)出質(zhì)量的高速運轉(zhuǎn)輪子、密封件等PU制品。與水反應生成胺和二氧化碳，胺進一步與異氰酸酯反應生成取代脲。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="青海異氰酸酯工程,異氰酸酯" src="https://tyunfile.71360.com/UploadFile/cdcykj/637281754418398437/9554837.png"></div><p style="text-indent:25px">性質(zhì):異氰酸的各種酯的總稱。有一異氰酸酯R-N=C=O和二異氰酸酯O=C=N-R-N=C=O。一般是不愉快氣味的液體。一異氰酸酯易與氨或胺作用而成脲類，易與醇作用而成氨基甲酸酯(如氨基甲酸乙酯)。用途:用于家電、汽車、建筑、鞋業(yè)、家具、膠粘劑等行業(yè);生產(chǎn)方法:一種異氰酸酯，其通過如下步驟生產(chǎn):a)使氯氣與一氧化碳反應生產(chǎn)光氣，b)使光氣與有機胺反應形成異氰酸酯和氯化氫，c)將異氰酸酯和氯化氫分離出來，d)任選地，純化氯化氫，e)制備氯化氫水溶液，f)任選地，純化氯化氫水溶液，g)使氯化氫水溶液進行電化學氧化形成氯氣，和h)使至少部分步驟(g)中產(chǎn)生的氯氣返回(a)。與水反應:與水反應生成胺和二氧化碳，胺進一步與異氰酸酯反應生成取代脲。青海異氰酸酯工程</p><p style="text-indent:25px">較重要的化合物有烷基單異氰酸酯.青海異氰酸酯工程</p><p> .光氣法按生產(chǎn)工藝條件來分,光氣法可分為液相光氣法和氣相光氣法。(1)液相光氣法①液相成鹽光氣化法：胺類首先與HCl或CO2氣體形成相應的鹽酸鹽或碳酸鹽,然后再與液相光氣反應得到異氰酸酯。該技術(shù)的使用可在溫和的條件下(甚至是室溫)制得異氰酸酯,同時反應收率較高,但缺點是反應時間長、所需溶劑量大、副產(chǎn)物多且難于分離。②液相直接光氣法：主要用于反應活性低、沸點高、不易汽化的胺類化合物與光氣發(fā)生反應,是TDI、MDI等主流異氰酸酯產(chǎn)品所廣. 青海異氰酸酯工程</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/3158103.html</p></div></div></div></div></div><div id="8nz3spj" class="page-right twoColRt"><div id="mgnk3w8" class="box01 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