White carbon black as well as preparation method and application thereof
A white carbon black, reaction technology, applied in the direction of silica, silicon oxide, etc., can solve the problem of low structure, achieve the effect of high structure, good dispersion, and simple preparation method
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Embodiment 1
[0045] Pipette 380mL modulus 3.3, SiO 2 Water glass solution with a molar concentration of 1.34mol / L, add 0.62g of alkyl glucoside (average degree of polymerization 1.2 to 1.8, 2% of the theoretical output of white carbon black), add it to a 1L stirred reactor, stir (speed 250rpm) Raise the temperature to 90°C, add 63.1mL sulfuric acid solution with a concentration of 2.5mol / L dropwise, carry out the precipitation reaction for 100min, adjust the pH value to 5.5, keep the temperature at 90°C, age for 30min, filter, wash with distilled water until the conductivity of the water is ≤ 100 μs / cm, oven-dried at 105°C until the moisture content of the product is 6 wt%, to obtain a precipitated white carbon black powder product.
[0046] Utilize transmission electron microscope (JEM-2100, Japan Electronics Co., Ltd.) to characterize the morphology and structure of the product, the results are as follows figure 1 As shown, it can be seen from the figure that the silica prepared in this...
Embodiment 2
[0048] Pipette 380mL modulus 3.3, SiO 2 Molar concentration is 1.34mol / L water glass solution, add 1.24g alkyl glucoside (average degree of polymerization 1.2~1.8, is SiO 2 4% of theoretical yield), was added to a 1L stirred reactor, stirred (rotating speed 250rpm) and warmed up to 90°C, a sulfuric acid solution with a concentration of 2.5mol / L was added dropwise, and the precipitation reaction was carried out for 100min. Adjust the pH value to 5.5, keep the temperature at 90°C, age for 20 minutes, filter, wash with distilled water until the conductivity of the water is ≤100μs / cm, and dry in an oven at 105°C until the product has a moisture content of 5.8wt% to obtain precipitated white carbon black powder body product. Product properties and rubber application test results are shown in Table 1.
Embodiment 3
[0050] Pipette 380mL modulus 3.3, SiO 2 The molar concentration is 1.34mol / L water glass solution, add 1.24g alkyl glucoside (average degree of polymerization 1.2~1.8, 4% of theoretical output of white carbon black), add to 1L stirring reaction kettle, stir (speed 250rpm) to heat up To 90°C, dropwise add sulfuric acid solution with a concentration of 2.5mol / L, carry out precipitation reaction for 100min, adjust the pH value to 5.5, keep the temperature at 90°C, age for 30min, filter, wash with distilled water until the conductivity of the water is ≤100μs / cm , dried in an oven at 105° C. until the moisture content of the product was 5.8 wt%, to obtain a precipitated white carbon black powder product. Product properties and rubber application test results are shown in Table 1.
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