Retardant (200g)

Aluminum hydroxide is considered the most important mineral retardant in the world. It is halogen-free and environmentally friendly.

Application:

As a flame retardant for epoxy resins (casting and laminating resins, gelcoats). It is ideal in the field of RC jets.

Technical characteristics: 

-Easy to mix

-Highly flame retardant (water burst at 200°C)

-Low hardness 3

-Density 2.4 g/cm3

-High whiteness (Y color value > 94)

-Coefficient of thermal expansion 15*10-6K-1 (at 20 - 300°C)

-Chemical composition: Al(OH)3 99.6%, Fe2O3 0.01%, SiO2 0.008%, Na2O 0.32 %

-Humidity: 0.15%.

-Particle size: Average particle size 1.0 µm + 325 mesh < 0.1%.

-Bulk density (kg·m−3): (bulk) 0.25, (packed) 0.6

-Amount of oil: 59 ml/100 g

-Whiteness: 96 %

-pH value (Mixture for pH measurement 30% flame retardant in water, at room temperature): 9 - 10

-Specific gravity: 2.42

-Refractive index: 1.57

-Hardness (Mohs): 3

Dosage:

25-50% by weight (25% in laminates, up to 50% in topcoats). Preliminary tests for the specific application are recommended.

Structure of the laminate in the film :

1) 8 layers of glass cloth tape 220 g/m2 

2) laminating resin epoxy resin L + hardener S + 25% aluminum hydroxide %