免费观看自慰120秒_氟化鈉的應用-湖南復恒星環(huán)?？萍加邢薰?/title> <meta name="keywords" content="六氟磷酸鈉，電池級氟化鈉，牙膏級氟化鈉，電子級氟化鈉，分析純氟化鈉，工業(yè)級氟化鈉、氟硅酸鈉、氟硅酸鉀、氟化鋁、冰晶石、氟硼酸鉀、氟鈦酸鉀"> <meta name="description" content="氟化鈉，白色閃亮晶體或白色粉末，是一種離子化合物，常溫下為無(wú)色晶體或白色固體，化學(xué)式為NaF。無(wú)色立方或四方晶體。對濕度敏感。在水中的溶解度(g/100ml):15℃時(shí)為4，25℃時(shí)為4.3，100℃時(shí)為5，不溶于乙醇。水溶液的部分水解是堿性反應。它的水溶液可以制造玻璃絲，但它的干燥晶體或粉末可以?xún)Υ嬖诓Ａ恐?。相對密度?"> <link href="/template/default/wap/skin/css/style.css" rel="stylesheet"> <link href="/template/default/wap/skin/css/common.css" rel="stylesheet"> <script language="javascript" type="text/javascript" src="/tj.js"></script> <script language="javascript" type="text/javascript" src="/common.js"></script> <meta http-equiv="Cache-Control" content="no-transform" /> <meta http-equiv="Cache-Control" content="no-siteapp" /> </head> <body> <a href="http://www.firsttimefoods.com/">亚洲熟妇av一区二区三区漫画,国产亚洲精品自在线亚洲情侣,精品人妻少妇嫩草AV无码专区,精品国产自在现线看久久</a> <div id="pl_css_ganrao" style="display: none;"><i id="pnr9b"></i><form 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<h3>新聞動(dòng)態(tài)<s class="iconn"></s></h3>  <div id="e1riobbg3ywo" class="box"> <a href="/gongsi/" title="行業(yè)新聞">行業(yè)新聞</a> </div>  </section>   <section class="content showInfo"> <div id="e1riobbg3ywo" class="showTit"> <h1>氟化鈉的應用</h1> <p class="mark">發(fā)布日期：2023-09-18 瀏覽次數：<i id="hits">143</i></p> </div> <div id="e1riobbg3ywo" class="contxt"> <p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">氟化鈉，白色閃亮晶體或白色粉末，是一種離子化合物，常溫下為無(wú)色晶體或白色固體，化學(xué)式為</span><span style="font-family:宋體">NaF。無(wú)色立方或四方晶體。對濕度敏感。在水中的溶解度(g/100ml):15℃時(shí)為4，25℃時(shí)為4.3，100℃時(shí)為5，不溶于乙醇。水溶液的部分水解是堿性反應。它的水溶液可以制造玻璃絲，但它的干燥晶體或粉末可以?xún)Υ嬖诓Ａ恐?。相對密度?.78。熔點(diǎn)是993℃。沸點(diǎn)是1704℃。中度毒性，半致死劑量(大鼠，口服)0.18g/kg。強烈刺激。</span></span></p><p style="margin-top:28px;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><strong><span style="font-family: 宋體;line-height: 150%;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 19px;background: rgb(255, 255, 255)"><span style="font-family:宋體">主要應用</span></span></strong></p><p style="margin-top:24px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">在涂料工業(yè)中用作磷化促進(jìn)劑，穩定磷化液，細化磷化，提高磷化膜的性能。具有有害的負催化作用的</span><span style="font-family:宋體">Al3+在鋁及其合金的磷化中被阻斷，從而磷化可以成功地作為木材防腐劑、農業(yè)殺蟲(chóng)劑、釀酒工業(yè)的殺菌劑、醫用防腐劑、焊劑、堿性鋅酸鹽鍍鋅添加劑、搪瓷、造紙工業(yè)等。</span></span></p><p style="margin-top: 28px;margin-right: 0;margin-bottom: 0;padding: 0;line-height: 150%"><strong><span style="font-family: 宋體;line-height: 150%;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 19px;background: rgb(255, 255, 255)"><span style="font-family:宋體">廣泛應用</span></span></strong></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">1.氟化鈉(N</span></span><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">a</span></span><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">F)是一種重要的氟化物鹽，用于制造其他氟化物原料。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">2.用作農業(yè)殺蟲(chóng)劑和殺菌劑。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">3.作為木材防腐劑、水處理劑、陶瓷顏料、制造沸騰鋼、輕金屬氟化物鹽處理劑、冶煉和精煉、作為保護層、核工業(yè)中的UF3吸附劑。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">4.提高密封材料和剎車(chē)片生產(chǎn)中的耐磨性。機械刨床插入鋼以增加焊接強度。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">5.搪瓷制藥工業(yè)、造紙和建筑材料等。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">6.在涂料工業(yè)中用作磷化促進(jìn)劑，穩定磷化液，細化磷化，提高磷化膜的性能。堿性鋅酸鹽是一種鍍鋅添加劑，它阻斷了鋁及其合金磷化中具有有害負催化作用的AL3+，使磷化得以順利進(jìn)行。鋼和其他金屬的清洗溶液，包括焊劑和助焊劑。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">7.陶瓷玻璃和搪瓷的助熔劑和防曬劑，皮革工業(yè)中的獸皮和皮膚處理，粘合劑的防腐。</span></span></p><p style="margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"> </span></p><p style="margin-top:28px;margin-right:0;margin-bottom:0;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><strong><span style="font-family: 宋體;line-height: 150%;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 19px;background: rgb(255, 255, 255)"><span style="font-family:宋體">氟化鈉在牙膏中的作用</span></span></strong></p><p style="margin-top:28px;margin-right:0;margin-bottom:0;margin-left:0;text-indent:32px;padding:0 0 0 0 ;text-autospace:ideograph-numeric;line-height:150%"><span style="font-family: 宋體;color: rgb(34, 34, 34);letter-spacing: 0;font-size: 16px;background: rgb(255, 255, 255)"><span style="font-family:宋體">在牙膏中加入氟化鈉可以預防齲齒，因為氟化物和牙釉質(zhì)可以在牙釉質(zhì)表面形成氟磷灰石，提高牙釉質(zhì)的硬度和耐酸性，減少牙菌斑的形成和齲齒的發(fā)生。含氟牙膏確實(shí)有一定的防齲作用。早在</span><span style="font-family:宋體">19世紀中葉，歐洲孕婦就已經(jīng)口服氟化鈣預防齲齒；在20世紀，全世界都認為氟化物是一種有效的防齲劑。一般含氟牙膏中，氟化鈉的含量為0.22-0.33%，單氟磷酸鈉的含量為0.76%。這么少的含量就足以保護人的牙齒，降低28%的齲齒患病率。根據牙膏中氟化物含量的不同，含氟牙膏可分為以下幾種:氟化鈉牙膏、單氟磷酸鈉牙膏、氟化亞錫牙膏、氟化胺牙膏等。目前，我國市場(chǎng)上最常見(jiàn)的含氟牙膏是氟化鈉牙膏和單氟磷酸鈉牙膏，或同時(shí)含有氟化鈉和單氟磷酸鈉的雙氟牙膏。不同種類(lèi)的含氟牙膏，無(wú)論含單氟還是雙氟，防齲效果都是一樣的。</span></span></p><p><br/></p> </div> <div id="e1riobbg3ywo" class="clearfix"></div> <div id="e1riobbg3ywo" class="reLink clearfix"> <div id="e1riobbg3ywo" class="prevLink fl">上一篇：沒(méi)有了！</div> <div id="e1riobbg3ywo" class="nextLink fl">下一篇：沒(méi)有了！</div> </div> </section>  <div class="e1riobbg3ywo" id="returntop" class="icon hidden"></div>  <footer id="footer_main">  <div id="e1riobbg3ywo" class="bottomNav"> <ul class="list"> <li><a href="/about/" title="關(guān)于我們"> <h3 class="tit">關(guān)于我們</h3> <em class="icon"></em> </a></li> 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