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Polymer Additives

BYK-C 8013

Technical DataSheet | Supplied by Byk (Altana Group)

BYK-C 8013 by BYK (Atlanta Group) is a solvent-free, polymeric coupling agent. It increases both transverse and flexible tensile strength of the composite by 70% through improved fiber-matrix bonding. It provides simultaneous adhesion to the fiber and resin matrix. BYK-C 8013 by BYK is suitable for hot-curing processes such as SMC/BMC, pultrusion and prepreg or RTM. It can be applied as a second sizing to the fiber e.g. in a spraying process, without having to remove the first sizing. It is compatible with vinyl esters, unsaturated polyester resins and epoxy-sized fibers. Used in carbon fiber-reinforced, radical-curing system. Moreover, it is added at 1-10% to the size/resin and recommended at 3-10% for second sizing, based on carbon fiber.

BYK-C 8013 Product details

Product Type
Chemical Composition
Physical Form
Product Launch Date
Product Status
Applications/ Recommended for
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BYK-C 8013 Properties


Value & Unit
Test Condition
Test Method
Density at 20°C, oscillating U-tube
xxxx g/mL
Refractive index
Non-volatile matter at 150°C, 10 min
xxxx %
Melting point, derived
xxx °C
Boiling point, derived
xxxxx °C
Flash point, Pensky-Martens
xxxxx °C
Vapour pressure
xxx hPa
Dynamic viscosity at 20°C, P/K method
xxx mPa.s
Last edited Mar 6, 2018
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