Method for analyzing trace activator in rosin type soldering flux
An analysis method and flux technology, applied in the direction of analysis by nuclear magnetic resonance, preparation of test samples, measurement of color/spectral characteristics, etc., can solve problems such as difficult to separate, affect component analysis, and low active acid content, and achieve elimination Interference, simple operation steps, and the effect of saving pre-treatment costs
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Embodiment 1
[0036] For a rosin flux sample, the activator extraction was pre-treated, and the specific processing steps were as follows:
[0037] Sample preparation: Weigh about 10.0g of sample, grind it into powder and put it into a beaker;
[0038] Use a graduated cylinder to measure 60ml of deionized water, add it to the beaker and heat it on a heating plate;
[0039] After the water in the beaker is heated to boiling, stir continuously with a glass rod, stop heating after stirring thoroughly for 5 minutes, and cool to room temperature;
[0040] Filter, the liquid after separation removes moisture with rotary evaporator, obtains residue;
[0041] The separated residues were sent to FTIR and NMR for characterization.
[0042] Such as figure 1 , figure 2 shown, according to figure 1 figure 2 FTIR, NMR collection of spectra, the activator obtained in this rosin flux is succinic acid.
Embodiment 2
[0044] For a rosin flux sample, the activator extraction was pre-treated, and the specific processing steps were as follows:
[0045] Sample preparation: Weigh about 10.0g of sample, grind it into powder and put it into a beaker;
[0046] Use a graduated cylinder to measure 70ml of deionized water, add it to the beaker and heat it on a heating plate;
[0047] After the water in the beaker is heated to boiling, stir continuously with a glass rod, stop heating after fully stirring for 3 minutes, and cool to room temperature;
[0048] Filter, the liquid after separation removes moisture with rotary evaporator, obtains residue;
[0049] The separated residues were sent to FTIR and NMR for characterization.
[0050] Such as image 3 , Figure 4 shown, according to image 3 Figure 4 FTIR, NMR collection of spectra, the activator that obtains in this rosin flux is hexanoic acid.
Embodiment 3
[0052] For a rosin flux sample, the activator extraction was pre-treated, and the specific processing steps were as follows:
[0053] Sample preparation: Weigh about 10.0g of sample, grind it into powder and put it into a beaker;
[0054] Measure 90ml of deionized water with a graduated cylinder, add it to the beaker and heat it on a heating plate;
[0055] After the water in the beaker is heated to boiling, stir continuously with a glass rod, stop heating after fully stirring for 6 minutes, and cool to room temperature;
[0056] Filter, the liquid after separation removes moisture with rotary evaporator, obtains residue;
[0057] The separated residues were sent to FTIR and NMR for characterization.
[0058] Such as Figure 5 , Figure 6 shown, according to Figure 5 Figure 6 FTIR, NMR collection of spectra, the activator that obtains in this rosin flux is adipic acid.
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