消泡劑的表面張力

消泡劑降低(di)水(shui)、溶液(ye)(ye)、懸浮液(ye)(ye)等(deng)的表面張力(li)，防止泡沫形(xing)成，或使原有(you)泡沫減少或消滅的物質。

消(xiao)泡劑應(ying)具備下列性質：

①消泡力(li)強，用量少。

②加到起泡體(ti)系(xi)中不(bu)影響體(ti)系(xi)的基本性質，即不(bu)與被消(xiao)泡體(ti)系(xi)起反應。

③表面張力小。

④ 與表面的平(ping)衡(heng)性好。

⑤耐熱性好。

⑥擴散性(xing)、滲透性(xing)好(hao)，正鋪展系數較高。

⑦化學性穩定，耐氧化性強。

⑧氣(qi)體溶解性、透過(guo)性好。

⑨在起泡性(xing)溶液中(zhong)的溶解性(xing)小。

⑩無生理活性，安(an)全性高(gao)。

消泡劑的應用十分廣(guang)泛，如(ru)食品工(gong)(gong)(gong)(gong)業(ye)(ye)、造紙工(gong)(gong)(gong)(gong)業(ye)(ye)、水處理、采(cai)油工(gong)(gong)(gong)(gong)業(ye)(ye)、印染工(gong)(gong)(gong)(gong)業(ye)(ye)、涂料工(gong)(gong)(gong)(gong)業(ye)(ye)、 洗滌劑工(gong)(gong)(gong)(gong)業(ye)(ye)、橡膠(jiao)膠(jiao)乳(ru)工(gong)(gong)(gong)(gong)業(ye)(ye)、氣溶膠(jiao)工(gong)(gong)(gong)(gong)業(ye)(ye)、日化(hua)工(gong)(gong)(gong)(gong)業(ye)(ye)、醫藥(yao)工(gong)(gong)(gong)(gong)業(ye)(ye)、奶制(zhi)品工(gong)(gong)(gong)(gong)業(ye)(ye)等。