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| Dispersion of Nano-SiO2 and the Effect of its Addition on the Performance of Aramid Paper |
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| DOI：10.11980/j.issn.0254-508X.2015.05.004 |
| Key Words:nano-SiO2 dispersion aramid paper properties |
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| Abstract:The influence of dispersion concentration, ultrasonic time, ultrasonic power and the amount of dispersant on dispersion properties of nano-SiO2 was explored by orthogonal experiments. Then nano-SiO2 was added into aramid paper, the influences of addition amount of the nano-SiO2 on the mechanical properties, density, dielectric properties and crystalline properties of the aramid paper were studied. The results showed that: when the dispersing concentration of nano-SiO2 was 0.1%, ultrasonic time was 30min, ultrasonic power was 400W and the amount of dispersant was 2%, dispersing effect was the best. When the addition amount of nano-SiO2 was 15%, the aramid paper had a maximum tensile index of for 33.51 N·m/g.while the addition amount of nano-SiO2 was 10%, the tear index of aramid paper was maximum, as 38.84 mN·m2/g. When the addition amount of nano-SiO2 was 15%, the aramid paper had a maximum votage resistance strength of 13.20 kV/mm. In the range of addition amount in the experiment, the density of the paper basically unchanged. In addition, the crystallinity of aramid paper adding nano-SiO2 decreased compared to the aramid paper without nano-SiO2. |
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