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Fillers for Polyester and Epoxy Resins

This is a high-porosity, synthetic, amorphous milled silica designed to impart thixotropic qualities to polyester resin.
2 -10% by weight can be mixed with laminating resin to increase thickness to a gelcoat type viscosity.
Supplied in 10kg bags.
Order ref. AOO 16277   10kg bag

Omya BLH is a unique filler in a class of its own and provides useful improvements in GRP mouldings. Omya BLH will increase tensile, compressive and impact strength to a greater degree than other fillers, as well as providing a marked increase in flexural strength, and will considerably decrease shrinkage and warping in all types of GRP mouldings.
Moreover, the surface treatment enables higher loadings to be used for the same resin mix viscosity, and eases re-dispersion should the filler settle out after standing in resin for a long time. The loading at which it is incorporated into the resin is purely dependent upon the maximum tolerable working viscosity of the resin mix; the higher the filler loading the better. A rough guide would be the following resimfiller rations by weight.

Hand lay up

2 parts of resin to 1 of filler

Spray lay up

3 parts of resin to 1 of filler

Cold press mouldings

4 parts of resin to 3 of filler

Hot press mouldings

2 parts of resin to 3 of filler

Order ref. AOO 16280    25kg bag


Q-CELL lightweight filler consists of hollow inorganic microspheres with exceptional whiteness and low bulk density. It may be used a volume extender in any thermoplastic or thermoset resin where a lightweight closed-cell structure is required, and is a particularly useful in producing syntactic cast polyester foams.
The use of inorganic, synthetic hollow spheres as a filler in thermosetting resins can provide significant raw material cost savings while maintaining equal strength, reducing weight and improving impact properties. The main advantages of using Q-CELL microspheres are that they will not upset the basic properties of a GRP laminate or polyester casting, but will often enhance many physical and mechanical characteristics. This, combined with consistency, weight and cost reduction, results in Q-CELL providing an economical way of extending polyester resin, furthering the use of polyester resins in applications where a light weight is of primary importance.
Q-CELL is added to resin at the rate of 0.5 -10% by weight dependent upon application, and up to 20% can be added if a paste consistency is required.
Order ref. AOO 16295    27.22kg box

This is a pure talc of even texture and softness, which is incorporated into polyester resins at a loading of around 11/ parts of filler to one part of resin by weight, for the manufacture of car body stopping compounds. It is widely used by many manufacturers for this purpose, its main virtue being softness, which enables the cured compound to be easily sanded down.
Order ref. AAO 16293    25kg bag

Fillite is a glass hard, inert silicate in the form of high strength hollow spheres ranging from 5-300 microns in diameter. The material is a versatile filler with unique properties which render it eminently adaptable for use in modern technology. If you need a filler for plastic or glassfibre composites, or any other type of heat resistant, high strength, or chemically inert product, Fillite offers you the following:

1. Light-weight. The S.G. range is from 0.3 to 0.7.

2. Flows freely because it is spherical.

3. Loadings of up to 70% can be attained.

4. Outstanding properties as a thermal barrier.

5. Combined readily with resins, glassfibre and plastics to form a new and exciting field of composites.

At present Fillite is used extensively in many diverse applications including sanitary ware, boat building, decorative castings, etc. and is recommended by resin manufacturers for improving the physical properties of their products. Order ref: AOO 16285   20kg bags

3M Glass Bubbles are very fine hollow glass spheres of consistent shape, wall thickness and size distribution, suitable for use as a cost effective volume filler. In appearance they are white opaque free-flowing powders of very low bulk density.
3M Glass Bubbles are made from E-glass (sodalime-borosilicate), giving a high crush strength and an associated very low percentage of damaged sphere shells. This gives the properties of good thermal and acoustic insulation in the final product as well, of course, as a reduction in product density. E-glass is also completely insoluble in water and reasonably hydrophobic, making 3M Glass Bubbles a free-flowing powder even in conditions of high humidity and suitable for any marine application. All grades are suitable for incoroporation into thermosetting resins, thermoplastic polymers, bonding materials and explosives.
Order ref: ABO 16287 l0kg carton