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tcPro"><section class="home-main container clearfix"><div id="ve7xuwd" class="twoCol"><div id="xaspwyv" 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-_huagong/">化工</a>?<a href="http://www.cdcfah.com/cp/second-_sysqm/">實(shí)驗(yàn)室器皿</a>?<a href="http://www.cdcfah.com/cp/third-sysqm_qtsysyp/">其他實(shí)驗(yàn)室用品</a>?泰州2-甲基四氫呋喃價(jià)位多少上海蔚云化工供應(yīng)</p><div id="lfxzbik" class="leftbox clearfix"><h1>泰州2-甲基四氫呋喃價(jià)位多少上海蔚云化工供應(yīng)</h1><div id="hvsumjy" class="proBig"><div id="dco8wvm" class="bigimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623894254288/5270430.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div><div id="ve3oq3a" class="smallimg"><div><p class="pic"><img src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623894254288/5270430.png" class="vcenter" onerror="javascript:this.src='/static/new_net_01/images/nopic.jpg';"></p></div></div></div><div id="r8a38tf" 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>泰州2-甲基四氫呋喃價(jià)位多少,2-甲基四氫呋喃</p><p><span>***更新：</span>2020-11-16 01:20:58</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="lzpwnhd" 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="8v3gy33" class="page-proshow02"><p class="title">詳細(xì)說明</p><div id="vt2wixo" class="box"><p><p style="text-indent:25px">３－二疊氮甲基氧丁環(huán)－四氫呋喃共聚醚（ＢＡＭＯ－ＴＨＦ）推進(jìn)劑屬于疊氮聚醚復(fù)合推進(jìn)劑，由于其高能、高燃速、低特征信號等優(yōu)點(diǎn)，泰州2-甲基四氫呋喃價(jià)位多少，因而引起了普遍關(guān)注。在硝胺填充、硝酸酯增塑的ＢＡＭＯ－ＴＨＦ推進(jìn)劑固體推進(jìn)劑中，泰州2-甲基四氫呋喃價(jià)位多少，粘合劑體系的網(wǎng)絡(luò)結(jié)構(gòu)和填料與粘合劑體系界面的“脫濕”現(xiàn)象影響了其力學(xué)性能，很大程度上限制了ＢＡＭＯ－ＴＨＦ推進(jìn)劑的普遍應(yīng)用。如何有效地改善粘合劑體系的網(wǎng)絡(luò)結(jié)構(gòu)，同時(shí)增強(qiáng)粘合劑與填料兩相間的粘附作用，提高其力學(xué)性能是ＢＡＭＯ－ＴＨＦ推進(jìn)劑研究領(lǐng)域的重要課題。在端羥基聚丁二烯（ＨＴＰＢ）、高能硝酸酯增塑聚醚（ＮＥＰＥ）推進(jìn)劑領(lǐng)域，有關(guān)鍵合劑對其形態(tài)結(jié)構(gòu)及力學(xué)性能的影響已有學(xué)者進(jìn)行了研究。但在硝酸酯／ＢＡＭＯ－ＴＨＦ推進(jìn)劑中對其力學(xué)性能的研究尚不充分?？疾炝硕喾N固化劑（己二異氰酸酯ＨＤＩ、甲苯二異氰酸酯ＴＤＩ、Ｎ－１００、異佛爾酮二異氰酸酯ＩＰＤＩ）、網(wǎng)絡(luò)調(diào)節(jié)劑（三羥甲基丙烷ＴＭＰ、ＤＹ、Ｎ，泰州2-甲基四氫呋喃價(jià)位多少，Ｎ′－二琥珀酰亞胺基碳酸酯ＤＳＣ等）和鍵合劑（Ｍ、Ｔ、Ｈ、中性聚合物）對ＢＡＭＯ－ＴＨＦ推進(jìn)劑力學(xué)性能的影響。甲基呋喃也可用于合成戊二烯、戊二醇、乙酰丙醇及酮類和2-甲基四氫呋喃。泰州2-甲基四氫呋喃價(jià)位多少</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州2-甲基四氫呋喃價(jià)位多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389623894254288/5270430.png"></div><p style="text-indent:25px">甲基效應(yīng)在藥物化學(xué)中眾所周知，然而對于藥物分子的后期修仍具有一定的挑戰(zhàn)。通過鈷催化劑，實(shí)現(xiàn)了對復(fù)雜藥物分子后期的C-H甲基化反應(yīng)。依賴于硼的甲基化試劑，同時(shí)利用分子內(nèi)在的導(dǎo)向基團(tuán)來活化C-H鍵，該反應(yīng)具有普遍的適用性。此外，該反應(yīng)無需預(yù)功能化或后脫保護(hù)，即可對各種市售藥物分子和天然產(chǎn)物進(jìn)行甲基化。同時(shí)，理化性質(zhì)和生物學(xué)測試也證實(shí)了這種看似微小的結(jié)構(gòu)變化，會影響重要的藥物特性。在藥物開發(fā)中，后期官能團(tuán)化或后期修飾至關(guān)重要。這種策略可直接對生物活性分子進(jìn)行結(jié)構(gòu)多樣化修飾，從而避免從頭合成，并迅速獲得目標(biāo)產(chǎn)物。過渡態(tài)金屬催化的特定位置C-H活化，已實(shí)現(xiàn)在復(fù)雜分子上引入體積較小的官能團(tuán)（如氟、氰基、胺或者短鏈烷烴）。而在藥物結(jié)構(gòu)中，C-H鍵上的氫被甲基取代后，有助于提高藥物的結(jié)合親和力、生物利用度、代謝穩(wěn)定性，改變藥物的藥代動(dòng)力學(xué)，從而被藥物化學(xué)家稱為“神奇的甲基效應(yīng)”或者“魔幻的甲基效應(yīng)”。揚(yáng)州2-甲基四氫呋喃供應(yīng)公司THF經(jīng)硫化氫處理生成四氫硫酚，可作燃料氣中的臭味劑。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州2-甲基四氫呋喃價(jià)位多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624124322657/6802327.png"></div><p style="text-indent:25px">聚四氫呋喃生產(chǎn)過程中分子量控制的影響因素，聚合反應(yīng)工序，在這一關(guān)鍵步驟中，THF、**(ACAN)、和醋酸(HAC) 被連續(xù)加入聚合反應(yīng)器中反應(yīng)生成PTMEA，聚合轉(zhuǎn)化率通常約28%～30%。聚合產(chǎn)品PTMEA 的聚合分子量由**/四氫呋喃比率(ACAN/THF)與及THF 循環(huán)回路系統(tǒng)中醋酸的含量所控制。然后，通過THF 分離塔、醋酸汽提塔對PTMEA 分離提純。反應(yīng)器產(chǎn)品物料中有未反應(yīng)的THF、ACAN、及HAC返回至反應(yīng)器循環(huán)再使用。催化劑截留其中，同時(shí)將產(chǎn)品及其反應(yīng)熱移出。甲醇化處理之目的是將PTMEA 轉(zhuǎn)化為PTMEG，這一轉(zhuǎn)化是經(jīng)與甲醇反應(yīng)通過酯-醇交換實(shí)現(xiàn)的。PTMEA、甲醇、和甲醇鈉被加入反應(yīng)精餾塔中，產(chǎn)物PTMEG及一些殘余甲醇和甲醇鈉在反應(yīng)精餾塔塔底提出，通過甲醇閃蒸塔、甲醇分離塔將甲醇分離除去。反應(yīng)精餾塔塔頂物料含甲醇和醋酸甲酯，通過共沸精餾塔將醋酸甲酯和甲醇分離，醋酸甲酯回收作副產(chǎn)品出售，甲醇返回到循環(huán)甲醇貯槽。</p><p style="text-indent:25px">PTMEA至PTMEG轉(zhuǎn)化的結(jié)果是聚合物料中留下了催化劑甲醇鈉(NaOMe)。要去除催化劑，首先用20%硫酸鎂水溶液與PTMEG中的甲醇鈉中和，反應(yīng)生成氫氧化鎂和硫酸鈉鹽，然后PTMEG 產(chǎn)品物料通過兩級干燥過程將其中所有的氫氧化鎂和硫酸鈉鹽結(jié)晶析出。干燥脫水后的PTMEG 連同結(jié)晶顆粒一起被通過“板框式”壓濾機(jī)過濾系統(tǒng)，以去除其中的固體結(jié)晶顆粒。窄化處理工藝過程部分提供了對PTMEG 的之后凈化，并通過去除產(chǎn)品中的低分子量聚合物，對聚合物產(chǎn)品的分子量（MW）分布進(jìn)行之后的窄化調(diào)整。這是通過兩級工藝過程實(shí)現(xiàn)的。經(jīng)初級工藝過程的“真空脫氣”后除去水、氮?dú)獾炔荒龤?，聚合物產(chǎn)品被輸送到短程蒸餾來完成之后一級工藝過程，在此過程中，低分子聚合被脫除。脫氣和短程蒸餾都備有冷阱用來凝聚低分子量聚合物。2-甲基四氫呋喃沸點(diǎn)較高。</p><div style="width:100%;text-align: center;"><img style="max-width: 640px; max-height: 320px;" alt="泰州2-甲基四氫呋喃價(jià)位多少,2-甲基四氫呋喃" src="https://tyunfile.71360.com/UploadFile/shweiyun/637389624016490617/6540095.png"></div><p style="text-indent:25px">四氫呋喃丙烯酸酯是一種重要的特種丙烯酸酯，分子中的環(huán)狀醚基比直鏈醚基更富于活性，醚鍵的α-位碳上的氫也有一定活性，特殊結(jié)構(gòu)賦予其后續(xù)產(chǎn)品特殊的性質(zhì)。以TFA作為共聚成分的丙烯酸樹脂與氨基樹脂并用時(shí)，可在較低溫度（100℃左右）下固化。同時(shí)TFA分子價(jià)鍵有一定的柔韌性，與其它樹脂并用可以起到增塑的效果。此外，TFA還可以作為單體稀釋劑應(yīng)用于紫外光（UV）固化產(chǎn)品，其特殊的環(huán)醚結(jié)構(gòu)使其與其它單官能度單體相比對大多數(shù)底材具有更好的附著力，同時(shí)有著低收縮性、強(qiáng)耐候性、強(qiáng)耐磨性和強(qiáng)耐水性，因此被普遍應(yīng)用于光固化的粘合劑、涂料、油墨等領(lǐng)域。隨著材料科學(xué)的日益發(fā)展，可以預(yù)計(jì)TFA會有越來越普遍的應(yīng)用。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。揚(yáng)州2-甲基四氫呋喃供應(yīng)公司</p><p style="text-indent:25px">甲基，化學(xué)式為-CH?，由碳和氫元素組成。泰州2-甲基四氫呋喃價(jià)位多少</p><p style="text-indent:25px">2-甲基四氫呋喃是一種有機(jī)化合物，分子式是C5H10O。外觀與性狀：透明,無色液體，密度：0.86 g/mL at 25 °C。熔點(diǎn)：-136 °C 凝固點(diǎn)：-136℃。沸點(diǎn)：78-80 °C，折射率：n** 1.406。儲存條件：庫房通風(fēng)低溫干燥,與氧化劑、酸類分開存放。由2-甲基呋喃催化加氫而得。當(dāng)催化加氫反應(yīng)采用氯化鈀催化劑時(shí),主要的產(chǎn)品是乙酰丙醇(見00420),但也可回收得到副產(chǎn)品2-甲基四氫呋喃。本品主要用作樹脂、橡膠、乙基纖維素等的溶劑；用它提取脂肪族酸類，要比一般所用的低沸點(diǎn)溶劑好，在鈾的冶煉工業(yè)上也相當(dāng)重要。在制藥工業(yè)中可合成抗痔藥磷酸伯氨奎、磷酸氯喹等。泰州2-甲基四氫呋喃價(jià)位多少</p><p style="text-indent:25px">上海蔚云化工有限公司發(fā)展規(guī)模團(tuán)隊(duì)不斷壯大，現(xiàn)有一支專業(yè)技術(shù)團(tuán)隊(duì)，各種專業(yè)設(shè)備齊全。在上海蔚云化工近多年發(fā)展歷史，公司旗下現(xiàn)有品牌巴斯夫陶氏等。我公司擁有強(qiáng)大的技術(shù)實(shí)力，多年來一直專注于化工產(chǎn)品（除危險(xiǎn)化學(xué)品、監(jiān)控化學(xué)品、煙花爆竹、民用物品、易制毒化學(xué)品）、化工機(jī)械設(shè)備及配件的銷售，在化工技術(shù)領(lǐng)域內(nèi)從事技術(shù)開發(fā)、技術(shù)轉(zhuǎn)讓、技術(shù)服務(wù)、技術(shù)咨詢。【依法須經(jīng)批準(zhǔn)的項(xiàng)目，經(jīng)相關(guān)部門批準(zhǔn)后方可開展經(jīng)營活動(dòng)】的發(fā)展和創(chuàng)新，打造高指標(biāo)產(chǎn)品和服務(wù)。自公司成立以來，一直秉承“以質(zhì)量求生存，以信譽(yù)求發(fā)展”的經(jīng)營理念，始終堅(jiān)持以客戶的需求和滿意為重點(diǎn)，為客戶提供良好的環(huán)戊酮，甲基異丙基酮，丙二胺，二甘醇胺，從而使公司不斷發(fā)展壯大。</p></p><br /><p>文章來源地址: http://www.cdcfah.com/cp/2005274.html</p></div></div></div></div></div><div id="macevhe" class="page-right twoColRt"><div id="lpro38p" class="box01 margin10 clearfix"><h3><a href="http://www.cdcfah.com/cp/">猜你喜歡</a></h3><div id="nwmt24n" class="recomPic likePro"><a href="http://www.cdcfah.com/cp/814588.html"><div><img 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