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¾ŸŸåŸºåŸºå›¢åQ?OHåQ‰ç­‰ã€?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">åQ?åQ‰ä¾§é“¾ä¹Ÿå¸¦æœ‰äº²æ°´æ€§çš„‹zÀL€§åŸºå›¢ï¼Œòq¶ä¸”链较长,其吸附åŞ态主要äؓ梛_Ş柔性吸附,可åŞ成网状结构,å…ähœ‰è¾ƒé«˜çš„立体位é˜ÀL•ˆåº”,再加上羧åŸÞZñ”生的静电排斥作用åQŒå¯å½¢æˆè¾ƒå¤§çš„立体斥力效应ã€?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">åQ?åQ‰åˆ†å­ç»“构自由度相当大,外加剂合成式可控制的参数多,高性能化的潜力å¤?。通过控制主链的聚合度、侧链(长度、类型)、官能团åQˆç§¾c…R€æ•°é‡åŠä½ç½®åQ‰ã€åˆ†å­é‡å¤§å°åŠåˆ†å¸ƒç­‰å‚数可对其进行分子结构设计,刉™€ å‡ºâ€œç†æƒ³â€çš„外加剂,更好地解军_‡æ°´ã€å¼•æ°”、缓凝、泌水等问题ã€?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">该类­‘…塑化剂的制备多采用自由åŸø™šåˆçš„方式制备。其主要步骤如下åQ?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">a、引发剂的分解;</span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">Iâ†?Iâ€?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">b、链引发反应åQ?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">I•+M→Mâ€?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">c、链增长反应åQ?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">Mâ€?åQ‹M→~ Mâ€?</span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">d、链¾lˆæ­¢ååº”åQ?/span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">ï½?M•nåQ‹ï½ž M•m→Mn+m</span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">ï½?M•nåQ‹ï½ž M•m→Mn+Mm</span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">e、链转移反应</span> </p> <p class="MsoNormal" style="text-indent:24.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;">ï½?Mâ€?åQ‹L→~ M1+ Lâ€?/span> </p> <p class="MsoNormal" style="text-indent:21.0pt;"> <br /> <span style="font-family:SimSun;font-size:14px;line-height:2;"> 其中åQŒI 代表引发剂,M 为单体,n、m ä¸ø™‡ªç„¶æ•°åQŒL 为链转移剂或其它¾cȝ‰©è´¨ã€‚该¾cÕdåº”引发剂的分解反应速率较低åQŒè€Œé“¾å¢žé•¿å’Œé“¾¾lˆæ­¢ååº”速率比前者快的多åQŒå‰è€…çš„‹zÕdŒ–能约ä¸?00ï½?50KJ/molåQŒé“¾å¢žé•¿ååº”‹zÕdŒ–能äؓ8ï½?0 KJ/molåQŒé“¾¾lˆæ­¢ååº”‹zÕdŒ–能约ä¸? KJ/mol。可见,引发剂的的分解速率对反应的˜q›ç¨‹å½±å“å¾ˆå¤§ã€‚该¾c»è¶…塑化剂单体常采用åQˆç”²åŸºï¼‰ä¸™çƒ¯é…¸ç”²æ°§åŸºèšä¹™åQˆä¸™åQ‰äºŒé†‡é…¯æˆ–聚乙(丙)二醇单(甲基åQ‰ä¸™çƒ¯é…¸é…¯ã€ä¸é¥±å’Œ¾Ÿ§é…¸åQˆå¦‚åQŒç”²åŸÞZ¸™çƒ¯é…¸åŠå…¶ç›ã€ä¸™çƒ¯é…¸åŠå…¶ç›ã€é©¬æ¥é…¸é…æˆ–马来酸等åQ‰ã€ä¸é¥±å’Œ¼‚ºé…¸ç›ï¼ˆå¦‚,烯丙基磺酔R’ ã€ç”²åŸºçƒ¯ä¸™åŸº¼‚ºé…¸é’ ã€AMPS ½{‰ï¼‰ã€ä¸é¥±å’Œé…¯ï¼ˆä¸™çƒ¯é…¸ç”²é…¯ã€ä¸™çƒ¯é…¸ä¹™é…¯ã€ä¸™çƒ¯é…¸¾ŸŸä¹™é…¯ç­‰åQ‰ä»¥åŠå…¶å®ƒç±»ä¸é¥±å’Œæœ‰æœºç‰©åQˆå¦‚åQŒè‹¯ä¹™çƒ¯ã€è‹¯ä¹™çƒ¯¼‚ºé…¸é’ ç­‰åQ‰ã€‚制备该¾c»è¶…塑化剂较多采用溶剂聚合法åQŒè¾ƒž®‘采用本体聚合。溶剂最普遍采用æ°ß_¼Œæœ‰ä¸€éƒ¨åˆ†é‡‡ç”¨ç”²è‹¯ã€è‹¯½{‰æœ‰æœºæº¶å‰‚。ä‹É用有机溶剂加大了对环境的污染òq¶ä¸”增加了成本,该法基本已被淘汰ã€?/span> </p> <p class="MsoNormal" style="text-indent:21.0pt;"> <span style="font-family:SimSun;font-size:14px;line-height:2;"><br /> </span> </p> <p class="MsoNormal" style="text-indent:21.0pt;"> <br /> </p> <p class="MsoNormal" style="text-indent:21.0pt;"> <br /> </p> <p style="color:#f000"><div>上一æ?<a href="24.html">防水材料行业­‘‹å‘分析</a></div> <div>下一æ?<a href="22.html">减水剂在混凝土技术中的必要æ€?/a></div> </p></div> <div class="clear"></div> <div class="tag">相关标签:<a href='/key.aspx?k=%e5%87%8f%e6%b0%b4%e5%89%82%e5%8e%82%e5%ae%b6'>减水剂厂å®?/a>,<a href='/key.aspx?k=%e9%98%b2%e6%b0%b4%e6%9d%90%e6%96%99%e4%be%9b%e5%ba%94%e5%95%86'>防水材料供应å•?/a>,<a href='/key.aspx?k=%e7%89%b9%e7%a7%8d%e5%bb%ba%e6%9d%90'>特种建材</a>,</div> <div class="title4">相关新闻<b></b></div> <div class="newslist"> <ul> <li><a href="/news/220.html" title="减水剂厂家科宝特¿Uå¾æåŽ‚告诉您柔性防水与刚性防水的区别"><span>2018-06-09</span>减水剂厂家科宝特¿Uå¾æåŽ‚告诉您柔性防水与刚性防水的区别</a></li> <li><a href="/news/219.html" title="减水剂厂家科宝特¿Uå¾æåŽ‚告诉您抗裂防渗宝介绍与应ç”?><span>2018-04-10</span>减水剂厂家科宝特¿Uå¾æåŽ‚告诉您抗裂防渗宝介绍与应ç”?/a></li> <li><a href="/news/218.html" title="减水剂厂家科宝特¿Uå¾æåŽ‚告诉您聚苯板外墙外保温系¾lŸçš„施工工艺"><span>2018-03-14</span>减水剂厂家科宝特¿Uå¾æåŽ‚告诉您聚苯板外墙外保温系¾lŸçš„施工工艺</a></li> <li><a href="/news/217.html" title="减水剂厂家科宝特¿Uå¾æåŽ‚告诉您聚苯板外墙外保温系¾lŸçš„的应ç”?><span>2018-03-14</span>减水剂厂家科宝特¿Uå¾æåŽ‚告诉您聚苯板外墙外保温系¾lŸçš„的应ç”?/a></li> </ul> </div> <div class="clear"></div> <div class="title4">相关产品<b></b></div> <div class="c_product_b"> <div> <h2><a href="/supply/57.html"><img src="/uploads/cp/20140814042453.jpg" alt="聚合物水泥基防水涂料JS-I" width='150' height='130' onload="imgZoomer(this,150,130)" /></a></h2> <h3><a href="/supply/57.html">聚合物水泥基防水涂料JS-I</a></h3> </div> <div> <h2><a href="/supply/56.html"><img src="/uploads/cp/20140723103630.jpg" alt="聚合物水泥基防水涂料JS-II" width='150' height='130' onload="imgZoomer(this,150,130)" /></a></h2> <h3><a href="/supply/56.html">聚合物水泥基防水涂料JS-II</a></h3> </div> <div> <h2><a href="/supply/55.html"><img src="/uploads/cp/20140226025723.png" alt="高效透明防水èƒ? width='150' height='130' onload="imgZoomer(this,150,130)" /></a></h2> <h3><a href="/supply/55.html">高效透明防水èƒ?/a></h3> </div> <div> <h2><a href="/supply/54.html"><img src="/uploads/cp/20140221105958.jpg" alt="聚羧酔R«˜æ•ˆå‡æ°´å‰‚" width='150' height='130' onload="imgZoomer(this,150,130)" /></a></h2> <h3><a href="/supply/54.html">聚羧酔R«˜æ•ˆå‡æ°´å‰‚</a></h3> </div> <h6 class="clear"></h6> </div> <div class="clear"></div> </div> </div><div class="clear_all"></div> </div> <div class="fb"><img src="/template/kebao/img/fb.jpg" width="1166" height="20"></div> <div class="di"> <table> <tr> <td> <div id="footer"> <table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <th><a href="/" title="首页">首页</a>| <a href="/about/" title="走近我们">走近我们</a>| <a href="/news/" title="新闻资讯">新闻资讯</a>| <a href="/supply/" title="产品中心">产品中心</a>| <a href="/contact/" title="联系我们">联系我们</a>| <a href="/3g/" title="3g">手机ç‰?/a>| <a href="#" title="˜q”回™å‰™ƒ¨">˜q”回™å‰™ƒ¨</a> <script type="text/javascript">var cnzz_protocol = (("https:" == document.location.protocol) ? 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