Method for manufacturing aluminosilicate nanoparticles having excellent dispersibility, rubber reinforcing member, and rubber composition comprising same for tire
A technology of aluminosilicate and nanoparticles, which is applied in the field of Korean Patent Application No.10-2017 filed on September 22, 2017, can solve the problems of mechanical strength deterioration and dispersibility reduction, achieve excellent dispersibility and improve reliability Effects on Processability and Productivity
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Embodiment 1
[0115] 0.005M sodium silicate (Na 2 SiO 3 ) aqueous solution and 0.005M aluminum nitrate (Al(NO 3 ) 3 ) aqueous solution was mixed at 80°C so that the molar ratio (Si / Al) of silicon atoms (Si) to aluminum atoms (Al) was 2.0 (pH 4.0), and then mixed using an overhead stirrer at 500 rpm for 10 minutes. and. A reaction solution (pH 4.0) containing aluminosilicate was obtained by the neutralization reaction.
[0116] The aluminosilicate was added to distilled water at room temperature, followed by washing by stirring and centrifuging for 12 hours.
[0117] The washed aluminosilicate was dried in an oven at 70° C. for 24 hours to finally obtain aluminosilicate nanoparticles (pH 5.6).
Embodiment 2
[0119] 0.005M sodium silicate (Na 2 SiO 3 ) aqueous solution and 0.005M aluminum nitrate (Al(NO 3 ) 3 ) aqueous solution was mixed at 80°C so that the molar ratio (Si / Al) of silicon atoms (Si) to aluminum atoms (Al) was 4.0 (pH 6.0), and then mixed using an overhead stirrer at 500 rpm for 10 minutes to carry out and. A reaction solution (pH 6.0) containing aluminosilicate was obtained by the neutralization reaction.
[0120] The aluminosilicate was added to distilled water at room temperature, followed by washing by stirring and centrifuging for 12 hours.
[0121] The washed aluminosilicate was dried in an oven at 70° C. for 24 hours to finally obtain aluminosilicate nanoparticles (pH 7.5).
Embodiment 3
[0123] 0.005M sodium silicate (Na 2 SiO 3 ) aqueous solution and 0.005M aluminum nitrate (Al(NO 3 ) 3 ) aqueous solution was mixed at 80°C so that the molar ratio (Si / Al) of silicon atoms (Si) to aluminum atoms (Al) was 4.3 (pH 6.2), and then mixed using an overhead stirrer at 500 rpm for 10 minutes. and. A reaction solution (pH 6.2) containing aluminosilicate was obtained by the neutralization reaction.
[0124] The aluminosilicate was added to distilled water at room temperature, followed by washing by stirring and centrifuging for 12 hours.
[0125] The washed aluminosilicate was dried in an oven at 70° C. for 24 hours to finally obtain aluminosilicate nanoparticles (pH 8.0).
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