Alkyl triphenyl phosphonium bis-trifluoromethane sulfimide ion liquid, synthesizing method and application of liquid serving as corrosion inhibitor of magnesium alloy material

Abstract

The invention discloses an alkyl triphenyl phosphonium bis-trifluoromethane sulfimide ion liquid. A preparation method of the liquid comprises the steps that triphenyl phosphine and bromine alkanes with the chain length of 10, 14 and 18 are subjected to an alkylation reaction to synthesize decyl, myristyl and octadecyl triphenyl phosphonium bromide, and then through anion exchange, three target ion liquids, namely, [DTP]+[NTf2]-, [TTP]+[NTf2]- and [OTP]+[NTf2]- are obtained. The ion liquid compound can greatly lower the corrosion rate of magnesium and magnesium alloy of the magnesium and is used for solving the problems of corrosion of magnesium metal and the magnesium alloy of the magnesium metal and the like. The preparation method has the advantages that the synthesizing technology is simple, the reaction raw materials are cheap, the reaction conditions are wild, and the after-treatment is simple, and the yield of the prepared alkyl triphenyl phosphonium bis-trifluoromethane sulfimide ion liquid can reach 90% or above.

Description

technical field [0001] The invention belongs to the technical field of ionic liquid preparation and application, and in particular relates to an alkyl triphenylphosphonium bistrifluoromethanesulfonimide ionic liquid, a synthesis method and application as a corrosion inhibitor for metal magnesium and magnesium alloy materials. Background technique [0002] The damage or deterioration of materials caused by the environment is called corrosion, which is a spontaneous process. In both natural environment and industrial medium, materials may be corroded. Therefore, corrosion problems pervade all fields of the national economy and bring huge losses to the national economy. According to statistics, the economic loss caused by corrosion accounts for about 1% to 5% of the gross national product of the year, and the economic loss caused by corrosion in my country is as high as 500 billion yuan per year. Therefore, doing a good job in corrosion and protection is not simply a technical...

AI Technical Summary

Problems solved by technology

However, the active nature of metal magnesium makes the corrosion resistance of magnesium and magnesium alloys very poor. In the industrial atmosphere and marine atmosphere environment, if there is no protection, severe corrosion will occur, which seriously restricts the wide application of magnesium and magnesium alloy materials. application

Images