Introduction

Fillite is a glass hard, inert, hollow silicate sphere. Fillite is primarily used to reduce the weight of plastics, rubbers, resins, cement, etc., but also imparts further benefits in many situations. Many of the advantages from the use of Fillite, including increased filler loading and improved rheology, are directly attributed to the spherical nature of the material.

Characteristics

• Lightweight
• Free-flowing
• Gray in Colour
• Spherical
• Inert

Typical Applications

Refractories, PVC flooring, oilwell cements, brake linings, Phenolics, Epoxies, Cast Polyesters, synthetic marbles, syntactic foams, BMC, SMC and FRP. Low density cements, shotcrete and gypsum board joint compounds. Automotive sound-dampening sheets.

Advantages

Reduced weight, increased filler loadings, better flow characteristics, less shrinkage and warping. Improved physical properties in moldings, castings and laminates, reduced water absorption, improved flame retardance, improved chemical resistance.

Chemical Properties

Shell	Al2O3	27%-33%
	SiO2	55%-65%
	Fe2O3	6% maximum
Gas	Carbon Dioxide	70%
	Nitrogen	30%

Physical Properties

Grades

Particle Size Range (microns)		5-500
Particle Size Distribution
	% Passing 500 microns	100
	% Passing 300 microns	85-100
	% Passing 180 microns	—
	% Passing 150 microns	30-80
	% Passing 106 microns	25-55
	% Passing 50 microns	2-10