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/></a> 【<a href="javascript:;" onClick="$j('cntrBody').css('font-size','16px')">大</a> <a href="javascript:;" onClick="$j('cntrBody').css('font-size','14px')">中</a> <a href="javascript:;" onClick="$j('cntrBody').css('font-size','12px')">小</a>】</p> </div> </div> <div id="n0unthv8m8v" class="clear"></div> <div class="n0unthv8m8v" id="cntrBody" class="zx_txt"> <p> <span style="color:#333333;font-family:"Microsoft YaHei", Helvetica, Arial, sans-serif;font-size:14px;white-space:normal;background-color:#FFFFFF;">防凍液是一種含有特殊添加劑的冷卻液，主要用于液冷發(fā)動機冷卻系統(tǒng)。它的優(yōu)良性能包括冬季防凍，夏季防沸，全年防垢防腐等。目前國內(nèi)外防凍液化學(xué)成分95%以上采用乙二醇，與自來水相比，乙二醇防凍性能突出，但水不能防凍。乙二醇沸點高，揮發(fā)性小，粘度適中，隨溫度變化不大，熱穩(wěn)定性好；乙醇型防凍劑是較為理想的制冷劑。防凍液種類汽車防凍液種類繁多，如無機物中氯化鈣CaCl2、有機物中甲醇CH3OH、乙醇C2H5OH、俗名酒精、乙二醇C2H4(OH)2、俗名甜醇、丙三醇C3H5(OH)3、俗名、潤滑油、我們?nèi)粘Ｉ钪谐Ｒ姷奶?、蜂蜜等因甲醇乙醇揮發(fā)性強，不宜用于北方車輛。除了防凍液，防凍液還有以下優(yōu)點:防腐功能:發(fā)動機及其冷卻系統(tǒng)由金屬制成，包括銅、鐵、鋁、鋼和焊料。當(dāng)這些金屬在高溫下與水接觸時，它們會隨著時間的推移而腐蝕和生銹。而且防凍液不僅不會引起發(fā)動機冷卻系統(tǒng)的腐蝕，而且具有防腐除銹的作用。</span> </p> <p> 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