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src="/template/kebao/img/a.jpg" width="15" height="15">地址åQšå¹¿ä¸œçœä¸­å±±å¸‚民众镇多宝工业åŒ?/div> </div> </div> <div class="qmainr"> <div class="qtitle"><h2>新闻中心</h2><span>当前位置åQ?a href="/">首页</a> > <a href="/news/jszc/">技术支æŒ?/a> > 详细内容</span></div> <div class="clear"></div> <div class="info"> <div class="article_title">聚羧酸系减水剂的合成æ–ÒŽ³•</div> <div class="article_time">发布旉™—´ : 2014-04-26</div> <div class="edit_line1"><p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">聚羧酸系减水剂的合成主要是以丙烯é…?/span><span style="font-size:14px;color:#000000;line-height:2;">(</span><span style="font-size:14px;color:#000000;line-height:2;">甲基丙烯é…?/span><span style="font-size:14px;color:#000000;line-height:2;">)</span><span style="font-size:14px;color:#000000;line-height:2;">ä¸ÞZ¸»é“¾æŽ¥æžèšæ°§ä¹™çƒ¯åŸº</span><span style="font-size:14px;color:#000000;line-height:2;">EO</span><span style="font-size:14px;color:#000000;line-height:2;">或聚氧丙烯基</span><span style="font-size:14px;color:#000000;line-height:2;">PO</span><span style="font-size:14px;color:#000000;line-height:2;">支链åQŒæˆ–以烯丙醇¾cÖMؓ主链接枝</span><span style="font-size:14px;color:#000000;line-height:2;">EO</span><span style="font-size:14px;color:#000000;line-height:2;">æˆ?/span><span style="font-size:14px;color:#000000;line-height:2;">PO</span><span style="font-size:14px;color:#000000;line-height:2;">支链åQŒä¹Ÿæœ‰ä»¥é©¬æ¥é…”R…ä¸ÞZ¸»é“¾æŽ¥æž?/span><span style="font-size:14px;color:#000000;line-height:2;">EO</span><span style="font-size:14px;color:#000000;line-height:2;">æˆ?/span><span style="font-size:14px;color:#000000;line-height:2;">PO</span><span style="font-size:14px;color:#000000;line-height:2;">支链的。目前合成聚¾Ÿ§é…¸¾pÕd‡æ°´å‰‚所选的单体主要有以下四¿Uï¼š</span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">    1)</span><span style="font-size:14px;color:#000000;line-height:2;">不饱和酸——如马来酔R…ã€é©¬æ¥é…¸å’Œä¸™çƒ¯é…¸ã€ç”²åŸÞZ¸™çƒ¯é…¸½{‰ï¼›</span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">    2)</span><span style="font-size:14px;color:#000000;line-height:2;">聚丙烯基物质——聚丙烯基烃及其含不同官能团的衍生物½{‰ï¼›</span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">    3)</span><span style="font-size:14px;color:#000000;line-height:2;">聚苯乙烯¼‚ºé…¸ç›æˆ–酯等åQ?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">    4)</span><span style="font-size:14px;color:#000000;line-height:2;">åQˆç”²åŸºï¼‰ä¸™çƒ¯é…¸ç›ã€é…¯æˆ–酰胺等ã€?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">    </span><span style="font-size:14px;color:#000000;line-height:2;">具体采用的合成方法主要有以下三种ã€?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">1ã€?/span><span style="font-size:14px;color:#000000;line-height:2;">先酯化后聚合</span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">ž®±æ˜¯å…ˆå°†è„‚肪族羧酸单体,通常是丙烯酸或甲åŸÞZ¸™çƒ¯é…¸å•ä½“åQŒä¸Žèšä¹™äºŒé†‡é†šè¿›è¡Œé…¯åŒ–反应,在聚醚上引入‹zÀL€§åŒé”®ï¼Œ¾~©åˆæˆåˆ†å­é‡åœ?/span><span style="font-size:14px;color:#000000;line-height:2;">200</span><span style="font-size:14px;color:#000000;line-height:2;">è‡?/span><span style="font-size:14px;color:#000000;line-height:2;">3000</span><span style="font-size:14px;color:#000000;line-height:2;">之间的活性大单体åQŒç„¶åŽç”±è¯¥å¤§å•ä½“与各¿Uç¾§é…¸å•ä½“共聚而得ã€?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">清华大学的李崇智用过量的丙烯é…怸Žä¸åŒåˆ†å­é‡çš„聚乙二醇部分酯化åQŒå¾—到系列的聚乙二醇单丙烯酸酯,再与</span><span style="font-size:14px;color:#000000;line-height:2;">(</span><span style="font-size:14px;color:#000000;line-height:2;">甲基</span><span style="font-size:14px;color:#000000;line-height:2;">)</span><span style="font-size:14px;color:#000000;line-height:2;">丙烯酸及</span><span style="font-size:14px;color:#000000;line-height:2;">(</span><span style="font-size:14px;color:#000000;line-height:2;">甲基</span><span style="font-size:14px;color:#000000;line-height:2;">)</span><span style="font-size:14px;color:#000000;line-height:2;">丙烯¼‚ºé…¸é’ å…±èšï¼Œæ‰€åˆæˆå‡æ°´å‰‚的水惔净‹¹†æµåŠ¨åº¦</span><span style="font-size:14px;color:#000000;line-height:2;">1h</span><span style="font-size:14px;color:#000000;line-height:2;">基本无变化。华东理工大学包志军½{‰çš„合成æ–ÒŽ³•å¦‚下åQšç¬¬ä¸€æ­¥åœ¨å››å£çƒ§ç“¶ä¸­ä¾‹Æ¡æŒ‰é…æ¯”加入聚乙二醇单甲醚、对苯二酚、对甲苯¼‚ºé…¸å’Œç”²åŸÞZ¸™çƒ¯é…¸åQŒåŠ çƒ­æ…拌,òq¶å‡æ¸©è‡³</span><span style="font-size:14px;color:#000000;line-height:2;">110</span><span style="font-size:14px;color:#000000;line-height:2;">℃,反应</span><span style="font-size:14px;color:#000000;line-height:2;">5</span><span style="font-size:14px;color:#000000;line-height:2;">ž®æ—¶åQŒå¾—到大分子单体</span><span style="font-size:14px;color:#000000;line-height:2;">(MAMPEC)</span><span style="font-size:14px;color:#000000;line-height:2;">åQ›ç¬¬äºŒæ­¥åŒæ—¶æ»´åŠ </span><span style="font-size:14px;color:#000000;line-height:2;">MAMPEG</span><span style="font-size:14px;color:#000000;line-height:2;">、丙烯酸和过¼‹«é…¸é“‰|°´æº¶æ¶²¾lå…±èšååº”后得成品,该äñ”品在</span><span style="font-size:14px;color:#000000;line-height:2;">0.8</span><span style="font-size:14px;color:#000000;line-height:2;">åQ…掺量时的减水率è¾?/span><span style="font-size:14px;color:#000000;line-height:2;">25.1</span><span style="font-size:14px;color:#000000;line-height:2;">åQ…。国内的研究者大多采用此¿Uæ–¹æ³•ã€?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span><br /> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">2 </span><span style="font-size:14px;color:#000000;line-height:2;">先聚合后酯化</span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">½W¬ä¸€æ­¥å°†ä¸€¿Uæˆ–几种¾Ÿ§é…¸¾cÕd•ä½“在溶液中均聚或å…Þpšæˆé«˜èšç‰©åQŒåˆ†å­é‡ç”±å‡ åƒè‡³å‡ ä¸‡ä¸ç­‰åQŒç¬¬äºŒæ­¥ç”Þp¯¥é«˜èšç‰©ä¸Žå•ç”²æ°§åŸºèšä¹™äºŒé†‡é†šåœ¨å‚¬åŒ–剂作用下发生¾~©åˆååº”åQŒåœ¨é«˜åˆ†å­ä¸»é“¾ä¸Šå¼•å…¥èšé†šä¾§é“¾ã€?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">同济大学的王国徏½{‰é‡‡ç”¨è¯¥é€”径åQŒå…·ä½“步骤如下:在带有搅拌器和冷凝管的三颈瓶中,加入配方量的丙烯酸、苯乙烯和丙烯酸丁酯åQŒä»¥é†‹é…¸ä¹™é…¯ä¸ºæº¶å‰‚,偶æÛ二异丁腈为引发剂åQŒåŠ çƒ­å›ž‹¹ååº?/span><span style="font-size:14px;color:#000000;line-height:2;">6</span><span style="font-size:14px;color:#000000;line-height:2;">ž®æ—¶åQŒå¾—到黄色共聚äñ”物。在å…Þpšäº§ç‰©ä¸­åŠ å…¥ä¸€å®šé‡çš„端¾ŸŸåŸºèšæ°§ä¹™çƒ¯åŸºé†šåŠé€‚量催化剂进行酯化反应,反应˜q‡ç¨‹ä¸­å¸¸åŽ‹è’¸é¦å‡ºé†‹é…¸ä¹™é…¯å’Œæ°´çš„共沸物反应</span><span style="font-size:14px;color:#000000;line-height:2;">4</span><span style="font-size:14px;color:#000000;line-height:2;">ï½?/span><span style="font-size:14px;color:#000000;line-height:2;">6</span><span style="font-size:14px;color:#000000;line-height:2;">ž®æ—¶åQŒå¾—到棕黄色接枝产物。在接枝产物中加入适量的醋é…怹™é…¯ï¼Œòq¶åœ¨å¸¸æ¸©ä¸‹æ»´åŠ æµ“¼‹«é…¸˜q›è¡Œ¼‚ºåŒ–反应åQŒæ»´åŠ ç»“束后反应</span><span style="font-size:14px;color:#000000;line-height:2;">2</span><span style="font-size:14px;color:#000000;line-height:2;">ž®æ—¶åQŒå¾—到深‹‚•è‰²¼‚ºåŒ–产物。再加入一定量çš?/span><span style="font-size:14px;color:#000000;line-height:2;">Na0H</span><span style="font-size:14px;color:#000000;line-height:2;">溶液快速搅拌直至磺化äñ”物完全溶解,得到最¾lˆäñ”品ã€?/span><span style="font-size:14px;color:#000000;line-height:2;">   </span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">该合成方法的优点是工艺简单,所有反应在一个反应釜中完成,且操作方便,成本低。但也有很多问题åQŒæœ€å¤§çš„éšùN¢˜æ˜¯éš¾äºŽæ‰¾åˆîC¸€¿Uåˆé€‚的溶剂作äؓ聚合反应的介质。如以水为溶剂,则难于保证所有单体都溶于æ°ß_¼Œå¦å¤–水也是活性较大的链è{¿UÕd‰‚åQŒè€Œä¸”ç”׃ºŽ¾~©åˆååº”是一可逆åã^衡反应,反应本èín要生成水åQŒå¤§é‡æ°´çš„存在不利于反应˜q›è¡Œã€‚采用有机溶剂尽½Ž¡èƒ½è§£å†³ä¸Šè¿°é—®é¢˜åQŒä½†åŒæ—¶ä¹ŸæŠ¹æ€äº†è¯¥æ–ÒŽ³•çš„最大优点——成本低åQŒåŒæ—Óž¼Œå¯¹çŽ¯å¢ƒä¼šé€ æˆä¸å¯é¿å…çš„污染,也不½W¦åˆå¯æŒ¾l­å‘展的要求ã€?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;"> <span style="font-size:14px;color:#000000;line-height:2;">3ã€?nbsp;</span><span style="font-size:14px;color:#000000;line-height:2;">原位聚合与接æž?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">ä¸ÞZº†å…‹æœèšåˆåŽåŠŸèƒ½åŒ–法的¾~ºç‚¹</span><span style="font-size:14px;color:#000000;line-height:2;">,</span><span style="font-size:14px;color:#000000;line-height:2;">开发了此工è‰?/span><span style="font-size:14px;color:#000000;line-height:2;">. </span><span style="font-size:14px;color:#000000;line-height:2;">此方法是在主链聚合的同时引入侧链。聚醚作为羧酸类不饱和单体的反应介质åQŒå…‹æœäº†èšç¾§é…怸Žèšé†šç›¸å®¹æ€§ä¸å¥½çš„问题。该æ–ÒŽ³•æ˜¯å°†ä¸™çƒ¯é…¸ç±»å•ä½“åQŒé“¾è½¬ç§»å‰‚、引发剂的æ؜合液逐步滴加到装有的甲氧åŸø™šä¹™äºŒé†‡çš„水溶液中åQŒåœ¨ä¸€å®šæ¡ä»¶ä¸‹ååº”制得。这¿Uæ–¹æ³•è™½ç„¶å¯ä»¥æŽ§åˆ¶èšåˆç‰©çš„分子量</span><span style="font-size:14px;color:#000000;line-height:2;">,</span><span style="font-size:14px;color:#000000;line-height:2;">但主链一般也只能选择å?/span><span style="font-size:14px;color:#000000;line-height:2;">-COOH</span><span style="font-size:14px;color:#000000;line-height:2;">基团的单ä½?/span><span style="font-size:14px;color:#000000;line-height:2;">,</span><span style="font-size:14px;color:#000000;line-height:2;">否则很难接枝</span><span style="font-size:14px;color:#000000;line-height:2;">,</span><span style="font-size:14px;color:#000000;line-height:2;">且这¿UæŽ¥æžååº”是可逆åã^衡反åº?/span><span style="font-size:14px;color:#000000;line-height:2;">,</span><span style="font-size:14px;color:#000000;line-height:2;">反应前体¾pÖM¸­å·²æœ‰å¤§é‡çš„水存在</span><span style="font-size:14px;color:#000000;line-height:2;">,</span><span style="font-size:14px;color:#000000;line-height:2;">其接枝度不会很高且难以控制。此æ–ÒŽ³•å·¥è‰º½Ž€å?/span><span style="font-size:14px;color:#000000;line-height:2;">,</span><span style="font-size:14px;color:#000000;line-height:2;">生äñ”成本较低åQŒä½†åˆ†å­è®¾è®¡æ¯”较困难ã€?/span><span></span> </p> <span style="font-family:宋体;background-color:#FFFFFF;font-size:14px;"></span> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;">一般,å…Þpšååº”采用自由基溶液聚合法åQŒä»¥æ°´äؓ溶剂åQŒç”¨˜q‡ç¡«é…”R“µä¸ºå¼•å‘剂æ—Óž¼Œæœ‰ä¸¤¿Uåˆæˆæ–¹æ³•ï¼š</span><span style="font-size:14px;color:#000000;line-height:2;">1)</span><span style="font-size:14px;color:#000000;line-height:2;">¿Uå­èšåˆæ³•ï¼Œž®†éƒ¨åˆ†å•ä½“及部分溶剂和少量引发剂加入反应瓶中åQŒåŠ çƒ­ä‹É聚合反应开始后¾l§ç®‹ž®†å‰©ä½™å•ä½“、溶剂和引发剂连¾l­åŠ å…¥ååº”瓶中;</span><span style="font-size:14px;color:#000000;line-height:2;">2)</span><span style="font-size:14px;color:#000000;line-height:2;">一‹Æ¡åŠ å…¥æ³•åQŒå°†å…¨éƒ¨å•ä½“及全部溶剂加入反应瓶中,加热后连¾l­åŠ å…¥å¼•å‘剂˜q›è¡Œååº”ã€?/span> </p> <p class="MsoNormal" style="color:#515151;font-family:宋体;font-size:16px;background-color:#FFFFFF;text-indent:21pt;"> <span style="font-size:14px;color:#000000;line-height:2;"><br /> </span> </p> <p class="MsoNormal" style="font-family:宋体;background-color:#FFFFFF;text-indent:21pt;"> <br /> </p> <p class="MsoNormal" 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