我們日常開車中可能對于防凍液并不十分了解，對于防凍液簡單介紹一下，防凍液本身是無色透明的液體，這些防凍液之所以做成鮮艷的顏色，主要是為了便于區分和辨別而加入了一些染色劑，另外一個作用就是防止誤食。那么汽車為什么需要添加防凍液呢？下文長沙租車公司就來為大家簡答(da)介紹一(yi)下。

　　防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)的(de)全稱為(wei)(wei)(wei)(wei)防(fang)(fang)(fang)(fang)凍(dong)(dong)冷(leng)卻液(ye)(ye)(ye).意為(wei)(wei)(wei)(wei)有防(fang)(fang)(fang)(fang)凍(dong)(dong)功能(neng)(neng)的(de)冷(leng)卻液(ye)(ye)(ye)。防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)可(ke)以防(fang)(fang)(fang)(fang)止在寒冷(leng)冬(dong)季停車時(shi)冷(leng)卻液(ye)(ye)(ye)結冰(bing)(bing)(bing)而(er)脹裂散熱器和凍(dong)(dong)壞發(fa)(fa)動機氣缸體(ti)或蓋。防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)不(bu)僅(jin)僅(jin)是(shi)冬(dong)天用(yong)(yong)的(de)，它(ta)應(ying)(ying)該(gai)在全年使(shi)(shi)用(yong)(yong)。防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)由水(shui)(shui)、防(fang)(fang)(fang)(fang)凍(dong)(dong)劑(ji)(ji)、添(tian)加(jia)(jia)劑(ji)(ji)三部(bu)分組成，按防(fang)(fang)(fang)(fang)凍(dong)(dong)劑(ji)(ji)成分不(bu)同一(yi)般可(ke)分為(wei)(wei)(wei)(wei)乙(yi)(yi)(yi)醇(chun)(chun)型(xing)(xing)、甘(gan)油(you)型(xing)(xing)、乙(yi)(yi)(yi)二醇(chun)(chun)型(xing)(xing)這三種(zhong)冷(leng)卻液(ye)(ye)(ye)。乙(yi)(yi)(yi)醇(chun)(chun)的(de)冰(bing)(bing)(bing)點(dian)(dian)為(wei)(wei)(wei)(wei)-114℃，沸點(dian)(dian)為(wei)(wei)(wei)(wei)78.3℃；乙(yi)(yi)(yi)醇(chun)(chun)易(yi)(yi)著火，易(yi)(yi)蒸發(fa)(fa)，配制時(shi)其含量(liang)一(yi)般不(bu)宜超(chao)過(guo)40％，也不(bu)宜在工作溫度較(jiao)高的(de)柴油(you)機冷(leng)卻系統中使(shi)(shi)用(yong)(yong)。甘(gan)油(you)（丙三醇(chun)(chun)）的(de)冰(bing)(bing)(bing)點(dian)(dian)為(wei)(wei)(wei)(wei)-17℃，沸點(dian)(dian)為(wei)(wei)(wei)(wei)290℃，與(yu)水(shui)(shui)混合后(hou)的(de)冰(bing)(bing)(bing)點(dian)(dian)最低可(ke)達(da)－46.5℃；水(shui)(shui)中甘(gan)油(you)的(de)含量(liang)要相當(dang)大時(shi)才(cai)能(neng)(neng)得到(dao)低冰(bing)(bing)(bing)點(dian)(dian)防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)，使(shi)(shi)用(yong)(yong)起來不(bu)經濟。乙(yi)(yi)(yi)二醇(chun)(chun)的(de)冰(bing)(bing)(bing)點(dian)(dian)為(wei)(wei)(wei)(wei)-11.5℃沸點(dian)(dian)為(wei)(wei)(wei)(wei)197.4℃，與(yu)水(shui)(shui)混合后(hou)的(de)冰(bing)(bing)(bing)點(dian)(dian)最低可(ke)達(da)-68℃；乙(yi)(yi)(yi)二醇(chun)(chun)易(yi)(yi)腐蝕金屬，調(diao)配防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)時(shi)要添(tian)加(jia)(jia)防(fang)(fang)(fang)(fang)蝕劑(ji)(ji)，一(yi)般每升防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)加(jia)(jia)磷酸(suan)氫二鈉(na)2.5～3.5克、糊(hu)精1克;乙(yi)(yi)(yi)二醇(chun)(chun)吸濕(shi)性強，貯存容器應(ying)(ying)密封；乙(yi)(yi)(yi)二醇(chun)(chun)不(bu)易(yi)(yi)揮(hui)發(fa)(fa)，配制時(shi)用(yong)(yong)量(liang)少，因而(er)使(shi)(shi)用(yong)(yong)較(jiao)廣(guang)；各種(zhong)防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)的(de)熱膨(peng)脹性較(jiao)大，加(jia)(jia)注時(shi)只能(neng)(neng)加(jia)(jia)到(dao)冷(leng)卻系總容量(liang)的(de)95％；調(diao)配防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)時(shi)，其冰(bing)(bing)(bing)點(dian)(dian)應(ying)(ying)比(bi)使(shi)(shi)用(yong)(yong)地(di)區的(de)最低溫度低5℃。乙(yi)(yi)(yi)二醇(chun)(chun)型(xing)(xing)防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)冰(bing)(bing)(bing)點(dian)(dian)只與(yu)乙(yi)(yi)(yi)二醇(chun)(chun)含量(liang)有關，如下表(biao)所示，假如用(yong)(yong)戶要稀(xi)釋，千(qian)(qian)萬不(bu)能(neng)(neng)按照線性關系推斷(duan)，應(ying)(ying)按表(biao)中比(bi)例推算。比(bi)如說(shuo)-45℃防(fang)(fang)(fang)(fang)凍(dong)(dong)液(ye)(ye)(ye)加(jia)(jia)入等(deng)量(liang)的(de)水(shui)(shui)，其冰(bing)(bing)(bing)點(dian)(dian)不(bu)是(shi)我們(men)想象的(de)-22.5℃，而(er)是(shi)約-10℃。而(er)且加(jia)(jia)入的(de)水(shui)(shui)不(bu)能(neng)(neng)是(shi)普通(tong)水(shui)(shui)，應(ying)(ying)該(gai)是(shi)去(qu)離子水(shui)(shui)，千(qian)(qian)萬不(bu)要用(yong)(yong)深(shen)井水(shui)(shui)。

　　長沙租車公司今天為(wei)大(da)家(jia)帶來的(de)關于汽(qi)車防凍液的(de)以(yi)(yi)上(shang)內容(rong)希望對大(da)家(jia)有(you)所幫助，通過上(shang)文(wen)的(de)介(jie)紹(shao)，對與行(xing)業(ye)產品(pin)一定有(you)了更(geng)多(duo)更(geng)深刻的(de)了解，希望可以(yi)(yi)持(chi)續關注(zhu)我們(men)網站，后續將繼續為(wei)大(da)家(jia)帶來更(geng)豐富(fu)得(de)行(xing)業(ye)內容(rong)知(zhi)識介(jie)紹(shao)，也可通過網站聯系我公(gong)司，我們(men)將為(wei)您(nin)提供優質滿意的(de)服務，讓您(nin)乘興而來滿意而歸(gui)。