India: Export Import House

Expansion

The expansion process is a delicate balance between softening of the shell, gas tightness of the shell, and pressure increase from the gas inside the microspheres.

Expansion


Thermal Stability

The different thermo-mechanical behavior of various Expancel grades makes it possible to choose an optimal grade for each process and application.

Thermal Stability


Particle Size

Expancel® Microspheres are small. The density of the microspheres has an influence on the particle size.

Particle Size

Chemical Resistance

Expancel can be used in contact with many chemicals, including solvents without discoloration or negative effects on expansion or other properties.

Chemical Resistance

Elasticity

All Expancel grades are highly resilient. The expanded microspheres are easy to compress. When the pressure is released the microspheres regain their original volume.

Elasticity


High Pressure

The ability of Expancel to stand high pressure varies considerably with density and particle size. Larger microspheres and microspheres with high density leads to better high pressure resistance.

High Pressure


Gas Tightness

The polymer shell of Expancel® Microspheres has been carefully designed to have a low gas permeability. This is important in many applications as it keeps the microspheres from leaking gas into the matrix.

Gas Tightness

Mechanical Strength

Expancel® Microspheres are able to withstand many cycles of loading/unloading without breaking.

Mechanical Strength

Surface Modification

Expancel® Microspheres can be used to achieve a nice velvet-like surface by adding a small amount of microspheres to a coating. This can be done on many different materials like metal, paper, fabrics etc.

Surface Modification


Closed Cells

Expancel® Microspheresare closed cells which is an important property in many applications.

Closed Cells


Insulation

Gas-filled closed cells are beneficial in insulation applications both electrical and thermal.

Insulation

Internal Pressure

Expancel® Microspheres can be added to produce an internal pressure in the finished product.

Internal Pressure


Dispersability

Expancel is easy to disperse uniformly in an dispersion but care must be taken to choose the correct type of dispersing equipment.

Dispersability







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