Aluminium hydroxide is an amphoteric hydroxide that can react with acids and bases. Therefore, it is widely used in rubber, paper, wire and cable applications. Let us know about the application in epoxy resin.

In the epoxy resin, aluminum hydroxide has a significant effect of increasing the oxygen index. By adding 120 aluminum hydroxide to the epoxy resin 100, the oxygen index can be increased from 20.0 to 27.5. At the same time, it can enhance the arc resistance and anti-scratch of epoxy resin. Epoxy resin filled with aluminum hydroxide has a promising future in the production of transformers, insulation equipment, switchgear, etc.

For example, an electrical switch factory uses aluminum hydroxide composite instead of silicon powder to make 110,000 volt, 220,000 volt hexafluoride hexafluoride electrical switch epoxy casting insulation, adding aluminum hydroxide up to 200%, not only reduces the expensive The amount of epoxy resin also improves the dimensional stability of the casting, and the linear shrinkage decreases from 0.5% to o. 4%, the curing shrinkage stress is also reduced accordingly. Arc resistance up to 180 seconds

The application of aluminum hydroxide in epoxy resin not only improves the oxygen index, but also enhances the arc resistance and the anti-scratch property, saves the production cost, improves the stability of the casting, and has many advantages.

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