Self-emulsifying metal protection treatment fluid based on amphoteric sulfhydryl compound

The invention discloses a self-emulsifying metal protection treatment fluid based on an amphoteric sulfhydryl compound. The self-emulsifying metal protection treatment fluid is mainly composed of the amphoteric sulfhydryl compound, a silane coupling agent and a neutralizer, and the amphoteric sulfhydryl compound is a reaction product of alkyl glycidyl ether and SH-(CH2)m-NH2. The self-emulsifying metal protection treatment fluid is suitable for treating metal products such as copper, copper alloy and silver. Compared with an existing treating agent based on an additional emulsifier, the self-emulsifying metal protection treatment fluid provided by the invention has the following advantages that (1) the negative effect caused by using the additional emulsifier is avoided by utilizing the self-emulsifying effect of the amphoteric sulfhydryl compound; (2) the preparation method and the application are relatively simple; and (3) pollution is small, stability is high, and the protective effect is remarkable when t