SIGRATHERM® Graphitized Microballoons

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Description

SGL Carbon’s graphitized microballoons are designed as a unique and special filler material e.g. for epoxy, polyurethane or polyester resins to reduce their density and increase their strength and dimensional stability. They function as non-halogenated flame-resistant filler and support to provide greater thermal insulation. Phenolic resin microspheres are carbonized and graphitized at 2000°C (3632°F) to produce graphitized microballoons of high purity.

Properties

General

Ash content cash

0.2 % at 20 °C

ASTM C561

Particle size D50 D50

51 μm

Specific surface area Asurf,specific

1.25 m²/g

BET; DIN ISO 9277

Tap density ρtap

0.18 g/cm³ at 20 °C

ASTM D3800

True particle density ρparticle

1.43 g/cm³ at 20 °C

DIN 51913

Water content cwater,cont

0.1 % at 20 °C

ASTM C562

Dimension

Dimensions

Particle size < 50 mesh/300 µm: 98% (ASTM E11); Particle size D50 = 51 μm (ISO 13320)

Chemical properties

Element

Weight %

Comment

C

99.8 %

Na

2.5E-3 %

This material data has been provided by SGL Carbon.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.