嘉興2-甲基四氫呋喃規(guī)格是多少上海蔚云化工供應(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="四氫呋喃是一種重要的有機(jī)化工及精細(xì)化工原料，普遍應(yīng)用于樹脂溶劑（磁帶涂層、PVC表面涂層、清洗PVC反應(yīng)器、脫除PVC薄膜、玻璃紙涂層、塑料印刷油墨、熱塑性聚氨酯涂層）；反應(yīng)溶劑（格式試劑、烷基堿金屬化合物和芳基堿金屬化合物、氫化鋁和氫化硼"><meta name="keywords" content="嘉興2-甲基四氫呋喃規(guī)格是多少,2-甲基四氫呋喃"><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>嘉興2-甲基四氫呋喃規(guī)格是多少,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-10-29 04:24:38</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="vsqqrxo" class="rightbox"><h3>公司基本資料信息</h3><p style="border:0;"><a rel="nofollow">上海蔚云化工有限公司</a></p><p><span>聯(lián)系人：</span>盛志華</p><p><span>郵箱: </span>3273929241@qq.com</p><p><span>電話: </span>18721726651</p><p><span>傳真: </span>021_</p><p><span>網(wǎng)址: </span>http://www.weiyunhuagong.com</p><p><span>手機(jī): </span>021-52909928</p><p><span>地址: </span>靜安區(qū)靈石路709號(hào)55幢A2113室</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="g3r4pw3" class="page-proshow02"><p class="title">詳細(xì)說(shuō)明</p><div id="zmie8x3" class="box"><p><p style="text-indent:25px">四氫呋喃是一種重要的有機(jī)化工及精細(xì)化工原料，普遍應(yīng)用于樹脂溶劑（磁帶涂層、PVC表面涂層、清洗PVC反應(yīng)器、脫除PVC薄膜、玻璃紙涂層、塑料印刷油墨、熱塑性聚氨酯涂層）；反應(yīng)溶劑（格式試劑、烷基堿金屬化合物和芳基堿金屬化合物、氫化鋁和氫化硼、甾族化合物和大分子有機(jī)聚合物）；化學(xué)中間產(chǎn)物（聚合生成PTMEG、天然氣加味劑）；色譜溶劑（凝膠滲透色譜法）。聚四氫呋喃主要用作嵌段聚氨酯或嵌段聚醚聚酯的軟鏈段。由平均分子量為1000的聚四氫呋喃制得的嵌段聚氨酯橡膠，可用作輪胎、傳動(dòng)帶、墊圈等;也可用于涂料、人造革、薄膜等。制得的嵌段聚醚聚酯為熱塑性彈性體，嘉興2-甲基四氫呋喃規(guī)格是多少。平均分子量為2000的聚四氫呋喃，可用以制聚氨酯彈性纖維，嘉興2-甲基四氫呋喃規(guī)格是多少。由聚四氫呋喃制成的嵌段聚氨酯具有良好的抗凝血性，嘉興2-甲基四氫呋喃規(guī)格是多少，可用作醫(yī)用高分子材料。四氫呋喃并用于天然氣加味。嘉興2-甲基四氫呋喃規(guī)格是多少</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="嘉興2-甲基四氫呋喃規(guī)格是多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623961490638/1355180.png"></div><p style="text-indent:25px"> 共沸回收2-MeTHF的能耗比用精餾法回收THF的能耗低70%。 THF因沸點(diǎn)低，水溶性極好，損耗大，回收率低，回收成本高，三廢處理費(fèi)用高。長(zhǎng)期使用2-MeTHF綜合成本比使用THF低。 2-甲基四氫呋喃沸點(diǎn)較高,容易冷凝回收,揮發(fā)損失少,大氣污染小；在水中溶解度小,通過共沸精餾后回收率高,進(jìn)入廢水中的2-甲基四氫呋喃含量低,容易處理。 **、四氫呋喃、鹵代烷和苯等環(huán)境不友好的溶劑每年消耗量超過幾十萬(wàn)噸，其中作為格氏反應(yīng)溶劑的**和四氫呋喃每年用量在萬(wàn)噸以上。用2-甲基四氫呋喃替代上述環(huán)境不友好的溶劑符合綠色化工技術(shù)的要求，而且市場(chǎng)前景十分廣闊，經(jīng)濟(jì)和社會(huì)效益十分明顯。鹽城2-甲基四氫呋喃生產(chǎn)廠商呋喃類是一類化學(xué)合成藥。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="嘉興2-甲基四氫呋喃規(guī)格是多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623894254288/5270430.png"></div><p style="text-indent:25px">四氫呋喃與水能混溶，并常含有少量水分及過氧化物。如要制得無(wú)水四氫呋喃，可用氫化鋁鋰在隔絕潮氣下回流（通常1000mL約需2~4g氫化鋁鋰）除去其中的水和過氧化物，然后蒸餾，收集66℃的餾分蒸餾時(shí)不要蒸干，將剩余少量殘液即倒出Chemicalbook）。精制后的液體加入鈉絲并應(yīng)在氮?dú)夥罩斜４?。處理四氫呋喃時(shí)，應(yīng)先用小量進(jìn)行試驗(yàn)，在確定其中只有少量水和過氧化物，作用不致過于激烈時(shí)，方可進(jìn)行純化。四氫呋喃中的過氧化物可用酸化的碘化鉀溶液來(lái)檢驗(yàn)。如過氧化物較多，應(yīng)另行處理為宜。HF是一種重要的有機(jī)合成原料且是性能優(yōu)良的溶劑，特別適用于溶解PVC、聚偏氯乙烯和丁苯胺，普遍用作表面涂料、防腐涂料、印刷油墨、磁帶和薄膜涂料的溶劑，并用作反應(yīng)溶劑，用于電鍍鋁液時(shí)可任意控制鋁層厚度且光亮。</p><p style="text-indent:25px">使用注意事項(xiàng)：呼吸系統(tǒng)防護(hù)：可能接觸其蒸氣時(shí)，應(yīng)該佩戴過濾式防毒面具(半面罩)。必要時(shí)，建議佩戴自給式呼吸器眼睛防護(hù)：一般不需要特殊防護(hù)，高濃度接觸時(shí)可戴安全防護(hù)眼鏡。身體防護(hù)：穿防靜電工作服。手防護(hù)：戴防苯耐油手套。其它：工作現(xiàn)場(chǎng)嚴(yán)禁吸煙。工作畢，淋浴更衣。注意個(gè)人清潔衛(wèi)生。應(yīng)急處置：皮膚接觸：脫去被污染的衣著，用肥皂水和清水徹底沖洗皮膚。眼睛接觸：提起眼瞼，用流動(dòng)清水或生理鹽水沖洗。就醫(yī)。吸入：迅速脫離現(xiàn)場(chǎng)至空氣新鮮處。保持呼吸道通暢。如呼吸困難，給輸氧。如呼吸停止，立即進(jìn)行人工呼吸。就醫(yī)。食入：飲足量溫水，催吐，就醫(yī)。滅火方法：噴水冷卻容器，可能的話將容器從火場(chǎng)移至空曠處。處在火場(chǎng)中的容器若已變色或從安全泄壓裝置中產(chǎn)生聲音，必須馬上撤離。滅火劑：泡沫、干粉、二氧化碳、砂土。用水滅火無(wú)效。小量泄漏：用砂土或其它不燃材料吸附或吸收。也可以用大量水沖洗，洗水稀釋后放入廢水系統(tǒng)。大量泄漏：構(gòu)筑圍堤或挖坑收容。用泡沫覆蓋，降低蒸氣災(zāi)害。噴霧狀水冷卻和稀釋蒸汽、保護(hù)現(xiàn)場(chǎng)人員、把泄漏物稀釋成不燃物。用防爆泵轉(zhuǎn)移至槽車或**收集器內(nèi)，回收或運(yùn)至廢物處理場(chǎng)所處置。四氫呋喃是芳香族化合物呋喃的完全氫化產(chǎn)物。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="嘉興2-甲基四氫呋喃規(guī)格是多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623991305064/1986424.png"></div><p style="text-indent:25px">呋喃類藥是一類化學(xué)合成藥。能作用于細(xì)菌的酶系統(tǒng)，干擾細(xì)菌的糖代謝而有抑菌作用。使用的呋喃類藥物有10余種，較常用的有呋喃妥因、呋喃唑酮、呋喃西林等，臨床上因呋喃西林易引起多發(fā)性神經(jīng)炎，故只供外用。呋喃妥因（呋喃啶）***范圍較廣，對(duì)多種革蘭氏陽(yáng)、陰性細(xì)菌均有控制作用，但對(duì)綠膿桿菌無(wú)效。吸收后由尿排泄，常用于***泌尿系***。細(xì)菌對(duì)本品不易產(chǎn)生耐藥性?？煽诜盟?。注意：腎功能不全者慎用。過敏反應(yīng)可致胸悶、氣喘等?？砂l(fā)生周圍神經(jīng)炎，表現(xiàn)為手足麻木及肌萎縮。中毒性精神癥狀則為幻視、幻聽等。胃腸道反應(yīng)、溶血性貧血及肺部并發(fā)癥也能發(fā)生。呋喃唑酮（痢特靈）***譜和呋喃啶相似，對(duì)消化道的多種細(xì)菌有控制作用，也可控制滴蟲?？诜蛰^少，主要在腸道起作用，主治腸炎、痢疾和傷寒等。對(duì)幽門螺旋菌有控制作用，故可用于***潰瘍病?？煽诜盟?。注意：常見胃腸反應(yīng)；常有遲發(fā)性皮疹、等反應(yīng)；也可發(fā)生肺浸潤(rùn)、***、直立性低血壓、低血糖等反應(yīng)。本品可引起多發(fā)性神經(jīng)炎，每日量超過0.4克或總量超過3克時(shí)較易發(fā)生，癥狀可遷延至數(shù)月或一年以上，故應(yīng)密切控制用量。新生兒或先天缺少血球保護(hù)酶者可致溶血性貧血。四氫呋喃用作色譜分析試劑、有機(jī)溶劑及尼龍66中間體。嘉興2-甲基四氫呋喃生產(chǎn)廠商</p><p style="text-indent:25px">2-甲基四氫呋喃可替代四氫呋喃做格氏反應(yīng)溶劑。嘉興2-甲基四氫呋喃規(guī)格是多少</p><p style="text-indent:25px">以端羥基環(huán)氧乙烷-四氫呋喃共聚醚（PET）和烯丙基異氰酸酯為原料，二丁基錫二月桂酸酯為催化劑，經(jīng)過加成反應(yīng)制備出一種含氨基甲酸酯基團(tuán)的端烯基環(huán)氧乙烷-四氫呋喃共聚醚（AUPET）；通過紅外光譜、核磁共振氫譜、碳譜和凝膠滲透色譜對(duì)AUPET的結(jié)構(gòu)進(jìn)行了表征；采用錐板黏度計(jì)測(cè)定了其黏度；采用DSC測(cè)定了其玻璃化轉(zhuǎn)變溫度；通過拉伸實(shí)驗(yàn)測(cè)定了其與四甲基對(duì)苯二腈氧化物（TTNO）固化后所得聚異噁唑啉彈性體的力學(xué)性能。結(jié)果表明，反應(yīng)后PET端羥基吸收峰完全消失，出現(xiàn)了烯基和氨基甲酸酯基團(tuán)的特征峰，聚醚分子鏈未發(fā)生斷裂；AUPET的玻璃化轉(zhuǎn)變溫度為-69.9℃，20℃時(shí)黏度為53.2 Pa·s；AUPET基聚異噁唑啉彈性體室溫下的拉伸強(qiáng)度為1.75 MPa，斷裂伸長(zhǎng)率為125%，優(yōu)于HTPB基聚異噁唑啉彈性體。嘉興2-甲基四氫呋喃規(guī)格是多少</p><p style="text-indent:25px">上海蔚云化工有限公司主營(yíng)品牌有巴斯夫陶氏，發(fā)展規(guī)模團(tuán)隊(duì)不斷壯大，該公司貿(mào)易型的公司。公司致力于為客戶提供安全、質(zhì)量有保證的良好產(chǎn)品及服務(wù)，是一家私營(yíng)有限責(zé)任公司企業(yè)。公司擁有專業(yè)的技術(shù)團(tuán)隊(duì)，具有環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺等多項(xiàng)業(yè)務(wù)。上海蔚云化工以創(chuàng)造***產(chǎn)品及服務(wù)的理念，打造高指標(biāo)的服務(wù)，引導(dǎo)行業(yè)的發(fā)展。</p></p><br /><p>文章來(lái)源地址: http://www.cdcfah.com/cp/1753668.html</p></div></div></div></div></div><div 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