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href="/products.html">產(chǎn)品中心</a> >> <a href="/ParentList-1699518.html">弱堿性陰離子交換樹脂</a> >> <a href="/SonList-1951319.html"><strong>弱堿性陰離子交換樹脂</strong></a> >> d301大孔弱堿性陰離子交換樹脂* </div> <div id="jnvlddtjlh3" class="about_con"> <div class="jnvlddtjlh3" id="rlt"><div id="jnvlddtjlh3" class="jqzoom"><a class="proimg"><img id=bigImg src="http://img69.chem17.com/gxhpic_7a6f8c9d06/fb78668e8aa15784736a45fb4e1146f2b5669bf1086027ccf750ea6b1e51ccb571162f3ea336def4.jpg" jqimg="http://img69.chem17.com/gxhpic_7a6f8c9d06/fb78668e8aa15784736a45fb4e1146f2b5669bf1086027ccf750ea6b1e51ccb571162f3ea336def4.jpg"></a></div></div> <div id="jnvlddtjlh3" class="rltproy"> <p class="proname">大孔弱堿性陰離子交換樹脂*</p> <ul> <li>更新時間： 2024-06-17</li> <li>產(chǎn)品型號： <span>d301</span></li> <li id="jnvlddtjlh3" class="proname2">簡單描述</li> <li>大孔弱堿性陰離子交換樹脂*</br>其預處理方法中的步與陽樹脂預處理方法中的步相同；而后用5%HCL浸泡4-8小時，然后放盡酸液，用水清洗至中性；而后用2%-4% NaOH溶液浸泡4-8小時后，放盡堿液，用清水洗至中性待用。</li> </ul> </div> <div id="jnvlddtjlh3" class="proneirong"> <div id="jnvlddtjlh3" class="proneirongp"><span>詳細介紹</span></div> <p><strong>大孔弱堿性陰離子交換樹脂*</strong></p><p> </p><p><br /><p align="left">一、樹脂的運輸和貯存：</p></p><p> </p><p align="left">離子交換樹脂內(nèi)含有一定量的水份，在運輸及貯存過程中應盡量保持這部分水份。如果貯存過程中樹脂脫了水，應先用<br />濃食鹽水（8-10%)浸泡1-2小時，再逐漸稀釋，不得直接放于水中，以免樹脂急劇膨脹而破碎。樹脂在貯存或運輸過程中，應保持在5-40℃的溫度環(huán)境中，避免過冷或過熱，影響質(zhì)量。若冬季沒有保溫設備時，可將樹脂貯存在食鹽水中，食鹽水的溫度可根據(jù)氣溫而定。<br /><br /> </p><p><br /><img src="https://img69.chem17.com/gxhpic_7a6f8c9d06/fb78668e8aa15784736a45fb4e1146f2b5669bf1086027ccf750ea6b1e51ccb571162f3ea336def4.jpg" /><br /><img src="https://img69.chem17.com/gxhpic_7a6f8c9d06/fb78668e8aa15784736a45fb4e1146f22926069dff185dbb6c57b08b74f4d170fe6abbfb90a298bd.jpg" /><br /><img src="https://img68.chem17.com/gxhpic_7a6f8c9d06/f88901ed60928cfc163814f87f9fca414e55bb2e2de2f5503d7c5a2d88f177a0ade05da3b23cd94f.jpg" /><br /><br /><strong>大孔弱堿性陰離子交換樹脂*</strong> 　陽離子交換樹脂的基體(matrix)，制造原料主要有苯乙烯和丙烯酸(酯)兩大類，它們分別與交聯(lián)劑二乙烯苯產(chǎn)生聚合反應，形成具有長分子主鏈及交聯(lián)橫鏈的網(wǎng)絡骨架結(jié)構(gòu)的聚合物。苯乙烯系樹脂是先使用的，丙烯酸系樹脂則用得較后。這兩類樹脂的吸附性能都很好，但有不同特點。丙烯酸系樹脂能交換吸附大多數(shù)離子型色素，脫色容量大，而且吸附物較易洗脫，便于再生，在糖廠中可用作主要的脫色樹脂。苯乙烯系樹脂擅長吸附芳香族物質(zhì)，善于吸附糖汁中的多酚類色素(包括帶負電的或不帶電的);但在再生時較難洗脫?！　∫虼?，糖液先用丙烯酸樹脂進行粗脫色，再用苯乙烯樹脂進行精脫色，可充分發(fā)揮兩者的長處。陽離子交換樹脂樹脂的交聯(lián)度，即樹脂基體聚合時所用二乙烯苯的百分數(shù)，對樹脂的性質(zhì)有很大影響。通常，交聯(lián)度高的樹脂聚合得比較緊密，堅牢而耐用，密度較高，內(nèi)部空隙較少，對離子的選擇性較強;而交聯(lián)度低的樹脂孔隙較大，脫色能力較強，反應速度較快，但在工作時的膨脹性較大，機械強度稍低，比較脆而易碎?！　」I(yè)應用的離子樹脂的交聯(lián)度一般不低于4%;用于脫色的樹脂的交聯(lián)度一般不高于8%;單純用于吸附無機離子的樹脂，其交聯(lián)度可較高。除上述苯乙烯系和丙烯酸系這兩大系列以外，離子交換樹脂還可由其他有機單體聚合制成。如酚醛系(fp)、環(huán)氧系(epa)、乙烯吡啶系(vp)、脲醛系(ua)等。<br />　　大孔吸附樹脂為吸附性和篩選性原理相結(jié)合的分離材料。大孔吸附樹脂的吸附實質(zhì)為一種物體高度分散或表面分子受作用力不均等而產(chǎn)生的表面吸附現(xiàn)象，這種吸附性能是由于范德華引力或生成氫鍵的結(jié)果。同時由于大孔吸附樹脂的多孔結(jié)構(gòu)使其對分子大小不同的物質(zhì)具有篩選作用。通過上述這種吸附和篩選原理，有機化合物根據(jù)吸附力的不同及分子量的大小，在大孔吸附樹脂上經(jīng)一定溶劑洗脫而達到分離、純化、除雜、濃縮等不同目的。吸附樹脂的表面發(fā)生吸附作用后，會使樹脂表面上溶質(zhì)的濃度高于溶劑內(nèi)溶質(zhì)的濃度，其結(jié)果引起體系內(nèi)放熱和自由能的下降。一般說來，吸附分為物理吸附和化學吸附兩大類。</p><br /> <link rel="stylesheet" type="text/css" href="/css/MessageBoard_style.css"> <script language="javascript" src="/skins/Scripts/order.js?v=20210318" type="text/javascript"></script> <a name="order" id="order"></a> <div id="jnvlddtjlh3" class="ly_msg" id="ly_msg"> <form method="post" name="form2" id="form2"> <h3>留言框 </h3> <ul> <li> <h4 class="xh">產(chǎn)品：</h4> <div id="jnvlddtjlh3" class="msg_ipt1"><input class="textborder" size="30" name="Product" id="Product" value="大孔弱堿性陰離子交換樹脂*" placeholder="請輸入產(chǎn)品名稱" /></div> </li> <li> <h4>您的單位：</h4> <div id="jnvlddtjlh3" class="msg_ipt12"><input class="textborder" size="42" 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