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id="jnvlddtjlh3" class="about_con"> <div id="jnvlddtjlh3" class="newstit">使用弱堿性陰離子交換樹(shù)脂的注意事項(xiàng)有哪些</div> <div id="jnvlddtjlh3" class="newstime"> <span id="jnvlddtjlh3" class="skim"><em>瀏覽次數(shù)：</em>636</span><span id="jnvlddtjlh3" class="skimtim"><em>發(fā)布日期：</em>2022-04-14 </span> </div> <div><span style="font-size: 16px;"> </span></div><div><span style="font-size: 16px;">　　<span style="color: rgb(0, 0, 0);"><strong><a href="http:///Products-32852342.html" target="_blank"><span style="color: rgb(0, 0, 0);">弱堿性陰離子交換樹(shù)脂</span></a></strong></span>含有弱堿性基團(tuán)，如伯胺基(亦稱一級(jí)胺基)-NH2、仲胺基(二級(jí)胺基)-NHR、或叔胺基(三級(jí)胺基)-NR2，它們?cè)谒心茈x解出OH-而呈弱堿性。這種樹(shù)脂在多數(shù)情況下是將溶液中的整個(gè)其他酸分子吸附。它只能在中性或酸性條件(如pH1～9)下工作。它可用Na2CO3、NH4OH進(jìn)行再生。<br /> </span></div><div><span style="font-size: 16px;">　　</span><strong style="font-size: 16px;">弱堿性陰離子交換樹(shù)脂</strong><span style="font-size: 16px;">的注意事項(xiàng)：<br /> </span></div><div><span style="font-size: 16px;">　　保持水分<br /> </span></div><div><span style="font-size: 16px;">　　離子交換樹(shù)脂含有一定水份，不宜露天存放，儲(chǔ)運(yùn)過(guò)程中應(yīng)保持濕潤(rùn)，以免風(fēng)干脫水，使樹(shù)脂破碎，如貯存過(guò)程中樹(shù)脂脫水了，應(yīng)先用濃食鹽水(25%)浸泡，再逐漸稀釋，不得直接放入水中，以免樹(shù)脂急劇膨脹而破碎。<br /> </span></div><div><span style="font-size: 16px;">　　保持溫度<br /> </span></div><div><span style="font-size: 16px;">　　冬季儲(chǔ)運(yùn)使用中，應(yīng)保持在5-40℃的溫度環(huán)境中，避免過(guò)冷或過(guò)熱，影響質(zhì)量，若冬季沒(méi)有保溫設(shè)備時(shí)，可將樹(shù)脂貯存在食鹽水中，食鹽水濃度可根據(jù)氣溫而定。<br /> </span></div><div><span style="font-size: 16px;">　　雜質(zhì)去除<br /> </span></div><div><span style="font-size: 16px;">　　離子交換樹(shù)脂的工業(yè)產(chǎn)品中，常含有少量低聚合物和未參加反應(yīng)的單體，還含有鐵、鉛、銅等無(wú)機(jī)雜質(zhì)，當(dāng)樹(shù)脂與水、酸、堿或其它溶液接觸時(shí)，上述物質(zhì)就會(huì)轉(zhuǎn)入溶液中，影響出水質(zhì)量，因此，新樹(shù)脂在使用前必須進(jìn)行預(yù)處理，一般先用水使樹(shù)脂充分膨脹，然后，對(duì)其中的無(wú)機(jī)雜質(zhì)(主要是鐵的化合物)可用4-5%的稀鹽酸除去，有機(jī)雜質(zhì)可用2-4%稀氫氧化鈉溶液除去，洗到近中性即可。如在醫(yī)藥制備中使用，須用乙醇浸泡處理。<br /> </span></div><div><span style="font-size: 16px;">　　定期活化處理<br /> </span></div><div><span style="font-size: 16px;">　　樹(shù)脂在使用中，防止與金屬(如鐵、銅等)油污、有機(jī)分子微生物、強(qiáng)氧化劑等接觸，免使離子交換能力降低，甚至失去功能，因此，須根據(jù)情況對(duì)樹(shù)脂進(jìn)行不定期的活化處理，活化方法可根據(jù)污染情況和條件而定，一般陽(yáng)樹(shù)脂在軟化中易受Fe的污染可用鹽酸浸泡，然后逐步稀釋，陰樹(shù)脂易受有機(jī)物污染，可用10%NaCl+2-5%NaOH混合溶液浸泡或淋洗，必要時(shí)可用1%雙氧水溶液泡數(shù)分鐘。其它，也可采用酸堿交替處理法，漂白處理法，酒精處理及各種滅菌法等等。<br /> </span></div><div><span style="font-size: 16px;">　　新樹(shù)脂預(yù)處理<br /> </span></div><div><span style="font-size: 16px;">　　新樹(shù)脂的預(yù)處理：離子交換樹(shù)脂的工業(yè)產(chǎn)品中，常含有少量低聚物和未參加反應(yīng)的單體，還含有鐵、鉛、銅等無(wú)機(jī)雜質(zhì)。當(dāng)樹(shù)脂與水、酸、堿或其它溶液接觸時(shí)，上述物質(zhì)就會(huì)轉(zhuǎn)入溶液中，影響出水質(zhì)量。因此，新樹(shù)脂在使用前必須進(jìn)行預(yù)處理。一般先用水使樹(shù)脂膨脹，然后，對(duì)其中的無(wú)機(jī)雜質(zhì)(主要是鐵的化合物)可用4-5%的稀鹽酸除去，有機(jī)雜質(zhì)可用2-4%稀氫氧化鈉溶液除去洗到近中性即可。<br /> </span></div> <div class="jnvlddtjlh3" id="news_sx"><li id="jnvlddtjlh3" class="sx_left">上一篇：<a href="/News-1405904.html">解讀強(qiáng)酸性陽(yáng)離子交換樹(shù)脂的基體組成</a> <br />下一篇：<a href="/News-1394201.html">專業(yè)人員講解弱酸性陽(yáng)離子交換樹(shù)脂的物理結(jié)構(gòu)</a></li></div> </div> </div> </div> </div> <div id="jnvlddtjlh3" class="clear"></div> <div class="jnvlddtjlh3" id="footer"> <div id="jnvlddtjlh3" class="footernr"> <div id="jnvlddtjlh3" class="footersub1"> <p>工作時(shí)間</p> <span>為了避免不必要的等待，敬請(qǐng)注意我們的工作時(shí)間。以下是我們的正常工作時(shí)間，中國(guó)大陸法定節(jié)假日除外。</span><br> <span>工作時(shí)間：周一至周六早8:00-晚18:00。周日休息</span> </div> <div id="jnvlddtjlh3" class="footersub2"> <p>服務(wù)宗旨</p> <span>遵循“科技創(chuàng)新，品質(zhì)求精；真誠(chéng)服務(wù)，鑄就品牌”的方針，以市場(chǎng)為導(dǎo)向，為廣大用戶提供滿意的產(chǎn)品和服務(wù)。</span> </div> <div id="jnvlddtjlh3" class="footersub3"><img src="/skins/387392/images/footvx.jpg"></div> </div> <div id="jnvlddtjlh3" class="footbanq"> <div id="jnvlddtjlh3" class="footbanqwz"> <p>© 2018 天津市津達(dá)正通環(huán)保科技有限公司版權(quán)所有  備案號(hào)：<a target="_blank" rel="nofollow"></a> 技術(shù)支持：<a target="_blank" rel="nofollow">化工儀器網(wǎng)</a> <a href="/sitemap.xml" 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