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The influence of aluminum hydroxide particle size on HFFR cable compound

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The influence of aluminum hydroxide particle size on HFFR cable compound

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The particle size of aluminum hydroxide is one of the important factors affecting the HFFR cable compound. Studies have shown that when the particle size D50 of aluminum hydroxide changes from nanometers to 5 microns, the limited oxygen index of the flame-retardant polyolefin material decreases parabolically, and the smaller of the particle size, the better the flame retardancy; and the smaller of the particle size, the more difficult to disperse. Therefore the recommended particle size D50 is between below 2 microns.

Large particles will reduce the elongation at break. So narrow particle size distribution is recommended.

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