A kind of colloidal electrolyte for lead-acid storage battery and preparation method thereof
A colloidal electrolyte and lead-acid battery technology, which is applied in the direction of lead-acid battery, lead-acid battery construction, final product manufacturing, etc., can solve the problem that the gel performance of colloidal electrolyte is greatly affected, the gelation process is slow, and the gelation rate is fast, etc. problem, to avoid the shortening of gelation time, increase the gel strength, and achieve the effect of low viscosity
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preparation example Construction
[0029] The preparation method of this colloidal electrolyte comprises the following steps:
[0030] First, prepare sulfuric acid and add sodium sulfate to sulfuric acid;
[0031] Secondly, prepare dispersed silica gel A liquid with dispersed silica gel A and water, and prepare dispersed silica gel B liquid with dispersed silica gel B and water;
[0032] Then, add water, gas-phase silica, disperse silica gel A liquid and disperse silica gel B liquid in high-speed dispersing shearing machine, make milky white masterbatch, the preferred line speed of high-speed dispersing shearing machine is 15m / s, and running time is 3min. ;
[0033] Finally, pre-cool the masterbatch and sulfuric acid to 5-15°C in cooling water, and then mix them at a high speed in a mass ratio of 1:1-1:4.
Embodiment 1
[0036] First, prepare the mass fraction W 2 =46.7% sulfuric acid 1000g, add 13.3g sodium sulfate in the sulfuric acid prepared;
[0037] Then, weigh 775.2g of water and add it to the high-speed dispersion shearing machine, and then add 125.5g of fumed silica, 78.4g of dispersed silica gel A liquid with a marked silicon content of 40.0wt%, and dispersed silica gel with a marked silicon content of 15.0wt%. B liquid 20.9g; shear 3min under the condition of a high-speed dispersing shearer at a linear speed of 15m / s, and obtain a milky white masterbatch with a silicon content of 16.0wt%.
[0038] Finally, pre-cool the masterbatch and sulfuric acid to 10°C, and mix at high speed for 5 minutes at a mass ratio of 1:3.
[0039] The total silicon content of the colloidal electrolyte prepared in this example is 4.0wt%, the sodium sulfate content is 1.0wt%, and the sulfuric acid density is 1.26g / mL; Compared with the prepared electrolyte, the gelation time is significantly prolonged: at...
Embodiment 2
[0042] First, prepare the mass fraction W 2 =46.7% sulfuric acid 1000g, add 13.3g sodium sulfate in the sulfuric acid prepared;
[0043] Then, weigh 743.3g of water and add it to the high-speed dispersion shearing machine, and then add 120.8g of fumed silica, 75.5g of dispersed silica gel A liquid with a marked silicon content of 40.0wt%, and dispersed silica gel with a marked silicon content of 15.0wt%. B liquid 60.4g; High-speed dispersing shear machine shears 3min under the condition of line speed 15m / s, obtains the milky white masterbatch that silicon content is 16.0wt%;
[0044] Finally, pre-cool the masterbatch and sulfuric acid to 5°C, and then mix at high speed for 5 minutes according to the mass ratio of 1:3;
[0045] The total silicon content of the colloidal electrolyte prepared in this example is 4.0wt%, the sodium sulfate content is 1.0wt%, and the sulfuric acid concentration is 1.26g / mL; at 25°C, the initial gelation time of this formula electrolyte is 35min, an...
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