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ALBIPOX® F 081 is a high performance elastomer modified epoxy resins specially designed for composites with superior mechanical properties. By the modification with SiO₂ nanoparticles and elastomer components a three phase system is formed in the cured resin. Embedded in the continuous resin matrix are elastic domains (Micrometer size) and hard domains (Nanometer size), thus superior performance can be achieved. A cured resin compared with a similar unmodified resin exhibits various improved properties: Improved toughness (fracture energy, fracture toughness, impact resistance), Significant higher energy absorption at sudden mechanical impact, Superior mechanical properties at low temperatures, Improved adhesion to fabrics (glass, aramide or carbon fibres) and No reduced thermodimensional stability. Using ALBIPOX® F 081 toughened epoxy resin systems with excellent price/performance ratio can be formulated. ALBIPOX® F 081 are silicone-free, solvent-free and do not contain softeners. They are of medium viscosity, enabling their use in formulations for injection methods (e. g. RIM, RTM). The products can be used as delivered; depending on the respective application they can be blended with up to 50% standard epoxy resins. They are suitable for the combination with all epoxy resins, no restrictions or incompatibilities exist. All conventional epoxy hardeners can be used.

This material data has been provided by Evonik Industries AG.

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.

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1.161 g/cm³

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Elastic modulus

2.28 GPa

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5.55 %

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Flexural modulus

2.68 GPa

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Flexural strength

109.4 MPa

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Impact strength, Charpy unnotched

170.2 kJ/m²

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Tensile strength

65.0 MPa

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Glass transition temperature

117.0 °C

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Rheological Properties



35 Pa·s

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Technological properties

Application areas

adhesives (very high toughness, significantly improved crash resistance, excellent adhesion, very good low temperature properties), reinforcement patches, for example, for automobile construction, Composites (improved inter laminar shear strength, increased punching resistance, increased pressure resistance of pipes, improved processability), Casts, structural foams, and so forth


SiO₂ nanoparticles and elastomer components

Processing methods

Cured with stochiometric amount of ALBIDUR® HE 600 (accelerated methyl hexahydrophthalic acid anhydride) for 1 hour at 90 °C and 2 hours at 160 °C.