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font-weight-300"> <span>2024-04-11 10:40:26</span> <span>admin</span> <span> <i class="icon wb-eye m-r-5" aria-hidden="true"></i> 29 </span> </div> </section> <section class="met-editor clearfix"> <p style="text-indent:37px;text-autospace:ideograph-numeric"><span style=";font-family:宋體;font-size:19px"><span style="font-family:宋體">聚丙烯酰胺對熱比較穩定，它的固體在</span><span style="font-family:Times New Roman">220</span><span style="font-family:宋體">～</span><span style="font-family:Times New Roman">230</span><span style="font-family:宋體">℃才軟化，它的水溶液在</span><span style="font-family:Times New Roman">110</span><span style="font-family:宋體">℃以后才明顯發(fā)生降解。聚丙烯酰胺不溶于苯、甲苯、二甲苯、汽油、煤油、柴油，但溶于水。聚丙烯酰胺與堿反應，產(chǎn)生部分水解聚丙烯酰胺，在強酸性</span><span style="font-family:Times New Roman">(pH</span><span style="font-family:宋體">≤</span><span style="font-family:Times New Roman">2.5)</span><span style="font-family:宋體">下產(chǎn)生亞胺化反應，減少它在水中溶解度。能為醛</span><span style="font-family:Times New Roman">(</span><span style="font-family:宋體">如甲醛</span><span style="font-family:Times New Roman">)</span><span style="font-family:宋體">及高價(jià)金屬</span><span style="font-family:Times New Roman">(</span><span style="font-family:宋體">如鋁、鉻、鋯等</span><span style="font-family:Times New Roman">)</span><span style="font-family:宋體">的多核羥橋絡(luò )離子所交聯(lián)，并易為機械和</span><span style="font-family:Times New Roman">(</span><span style="font-family:宋體">或</span><span style="font-family:Times New Roman">)</span><span style="font-family:宋體">氧的作用所降解。在采油中，主要用作驅油劑、堵水劑、調剖劑、增粘劑、降阻劑、水處理劑等。</span></span></p><p style="text-indent:37px;text-autospace:ideograph-numeric"><span style=";font-family:宋體;font-size:19px">在水中的溶解度：</span><span style=";font-family:宋體;font-size:19px">聚丙烯酰胺</span><span style=";font-family:宋體;font-size:19px"><span style="font-family:宋體">在機械快速攪拌下，易溶于冷水中而形成透明的膠粘溶液。提高溫度并不影響其溶解度，僅在溶液濃度增至高粘度時(shí)，其溶解才會(huì )受到限制。其他溶劑中的溶解性：在甘油、乙二醇、甲醛、冰醋酸和乳酸</span><span style="font-family:Times New Roman">(</span><span style="font-family:宋體">這些物質(zhì)可用作聚丙烯酰胺復膜的增塑劑</span><span style="font-family:Times New Roman">)</span><span style="font-family:宋體">等溶劑中，有</span><span style="font-family:Times New Roman">1%</span><span style="font-family:宋體">以上的溶解度。在丙酸、丙二醇等溶劑中僅能膨潤而不溶解，不能溶于丙酮和己烷等溶劑中。穩定度：有中等程度的吸濕性，若不暴露在極高溫度的地點(diǎn)則粉末狀的聚丙烯酰胺可長(cháng)期貯存。對于液體聚丙烯酰胺，當其濃度大于</span><span style="font-family:Times New Roman">17%</span><span style="font-family:宋體">時(shí)，可貯存一年以上，而溶液粘度并無(wú)顯著(zhù)變化。在</span><span style="font-family:Times New Roman">pH</span><span style="font-family:宋體">值</span><span style="font-family:Times New Roman">3</span><span style="font-family:宋體">～</span><span style="font-family:Times New Roman">9</span><span style="font-family:宋體">范圍內，能維持有良好的穩定度；在較高</span><span style="font-family:Times New Roman">pH</span><span style="font-family:宋體">值時(shí)，則粘度會(huì )有逐漸增加?；烊菪裕涸谕ǔＪ褂玫臐舛认?，可與大多數天然或合成水溶性樹(shù)脂、大多數膠乳系統和大多數鹽類(lèi)具有混容性。還可與非離子型、陽(yáng)離子型和陰離子型表面活性劑迅速混容，但某些表面活性劑可能影響其粘度。粘度：聚丙烯酰胺溶液的粘度與其分子量呈線(xiàn)性關(guān)系，另外，溫度越高，則粘度越低。</span></span></p> </section> <div id="96joo6j" class='met-page p-y-30 border-top1'> <div id="gdngtpu" class="container p-t-30 "> <ul class="pagination block blocks-2 text-xs-center text-sm-left"> <li id="ps95a5l" class='page-item m-b-0 '> <a href='../news/shownews.php?id=42' title="含氯消毒劑有哪些？工業(yè)水處理消毒劑種類(lèi)" class='page-link text-truncate'> 上一篇 <span aria-hidden="true" class='hidden-xs-down'>: 含氯消毒劑有哪些？工業(yè)水處理消毒劑種類(lèi)</span> </a> </li> <li id="lgr8l6c" class='page-item m-b-0 '> <a href='../news/shownews.php?id=40' title="氧化性殺菌劑四川成都次氯酸鈉用途有哪些？是危險品嗎" class='page-link pull-xs-right text-truncate'> 下一篇 <span aria-hidden="true" class='hidden-xs-down'>: 氧化性殺菌劑四川成都次氯酸鈉用途有哪些？是危險品嗎</span> </a> </li> </ul> </div> </div> </div> </div> <div id="smfeuq0" class="col-md-3"> <div id="mxovfyr" class="row m0"> <aside 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