2 results about "Tri-N-octylamine" patented technology

The invention relates to the technical field of soldering flux, and particularly discloses a water-soluble normal-temperature solidification type soldering flux for an aluminum soldering tin wire and a preparation method of the soldering flux. The invention relates to a water-soluble normal-temperature solidification type soldering flux for an aluminum soldering tin wire. The soldering flux comprises the following components in parts by mass: 16-24 parts of polyethylene glycol; 16 to 24 parts of fluoboric acid; 15 to 31 parts of tri-n-octylamine; 14 to 26 parts of tetramethylethylenediamine; 8 to 12 parts of water-soluble zinc salt; 2 to 8 parts of water-soluble stannous salt; 0.4 to 1 part of a surfactant; and 0.6-2 parts of a slow release agent. The water-soluble soldering flux has the advantages that the water-soluble soldering flux which is in a solid state at normal temperature can better improve the welding strength, and the residual color after welding is relatively light.

The application belongs to the technical field of spent fuel reprocessing analysis, and particularly relates to a method for rapidly measuring the content of oxalate in radioactive liquid. The method comprises the following steps: adding different volumes of tri-n-octylamine, and obtaining an organic phase sample after extraction; measuring the maximum absorption wavelength of oxalate ions, the optimal sample injection amount and flow rate, and the optimal extraction agent proportion; preparing a series of oxalate standard solutions with different concentration gradients, and measuring the peak area and concentration relationship of the standard solutions under the optimal conditions; and taking a certain amount of pretreated sample, and measuring the sample under the optimal conditions. The application uses tri-n-octylamine to extract and separate oxalic acid to obtain a pretreatment method, simplifies the complex pretreatment steps of oxalate measurement, shortens the sample measurement time, measures the content of oxalate in the post-treatment process sample on a liquid chromatograph, and realizes the effects of rapidness, accuracy, safety and the like.