Aerogel Powder

Aerogel powder is produced by finely grinding pure aerogel blocks; unlike aerogel particles, it has a uniform particle size, making it suitable as a raw material additive. Two models are published: AG-PD05 with approximately 5 μm diameter and AG-PD20 with approximately 20 μm, both white. Published parameters include specific surface area of 400-700 m²/g, pore size around 15 nm, bulk density of 0.06-0.12 g/cm³, porosity of at least 90%, hydrophobicity with a 145° contact angle, and an application temperature range of -250 to 800°C.

Aerogel powder is used as a functional additive: in aerogel-based insulation and fireproof coatings for building interiors/exteriors and for direct application on metal surfaces; in insulating mortars, fire-resistant gypsum boards, and nano microporous boards; in insulating textiles; and in VOC adsorbents. Thanks to its high fire-resistance rating, high porosity, large specific surface area, and ultra-low density, coatings incorporating aerogel powder deliver thermal insulation, fire resistance, and sound insulation. Formulators select between the finer AG-PD05 and coarser AG-PD20 based on the target coating or composite system’s rheology and finish requirements.

The manufacturer distinguishes the two by particle size uniformity: aerogel particles are crushed material with no fixed shape or size, used mainly as insulation fill, while aerogel powder is finely ground to a uniform particle size – approximately 5 or 20 μm in the two published models – making it suitable as a controlled additive in coatings, mortars, boards, and textiles where dispersion consistency matters. Powder bulk density is published at 0.06-0.12 g/cm³, and hydrophobicity at a 145° contact angle. If your application involves filling cavities rather than formulation, the particle grade is the more appropriate starting point.

Aerogel powder’s ultra-low density (0.06-0.12 g/cm³) and high porosity (≥90%) mean small weight fractions add significant volume to a formulation, so dosing is typically planned by volume rather than weight. The 145° hydrophobic contact angle aids handling in some systems but may require appropriate wetting agents in water-based coatings – the powder is produced from water-resistant aerogel, so discuss dispersion approach with the factory. Its application temperature range of -250 to 800°C far exceeds most coating service conditions. Start with lab-scale trials to fix loading, dispersion energy, and viscosity before scaling to production batches.

The technical parameters table lists for AG-PD05 and AG-PD20: white color; specific surface area 400-700 m²/g; pore size ≈15 nm; bulk density 0.06-0.12 g/cm³; porosity ≥90%; hydrophobicity 145°; application temperature -250 to 800°C; and a published thermal conductivity entry that should be verified against the current TDS, as tabulated figures for powder beds depend strongly on compaction and test method. For formulation work, request lot-specific data and, where conductivity of the final coating matters, measure the applied coating rather than relying on raw-powder values. Samples of both grades can be arranged for evaluation.