乙二醇200（peg200）在金属加工液中的应用：润滑、冷却与环保的“三重奏”

引言：从一瓶油说起

大家有没有注意过，工厂里那台轰隆作响的机床，旁边总有一根管子不停地喷着液体？那可不是水，而是我们今天要聊的主角——金属加工液。这玩意儿就像金属加工过程中的“润滑油+降温剂+清洁工”，缺了它，机器分分钟“发烧中暑”。

而在这些加工液中，有一种成分特别低调却至关重要，它就是——乙二醇200（polyethylene glycol 200，简称 peg200）。

别看它名字有点“化学味”，其实它可是个“万金油”型选手，在润滑、冷却、乳化、防锈等方面都有它的身影。今天我们就来聊聊这个看似普通却不平凡的小分子，如何在金属加工液中大显身手！

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