Designer Molecules BMI-689 Liquid Bismaleimide

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Designer Molecules BMI-689 Liquid Bismaleimide
Categories:	Fluid
Material Notes:	Description: BMI-689 is a unique low viscosity liquid bismaleimide based on a non-hydrogenated dimer diamine backbone. It can be homo-cured via UV or free radical initiators to form tough, hydrophobic, cross-linked polyimides. The material has excellent low pH hydrolytic resistance and thermal stability. The amorphous nature of this BMI allows it to be used in a variety of applications including mixed cure systems (e.g. epoxy and BMI), mixed BMI systems or where a low viscosity, free radical cured resin is required. It is soluble in most aromatic and aliphatic solvents such as toluene, xylene, NMP, etc. Highlights: Low viscosity liquid BMI High adhesion to various substrates Hydrophobic Superior thermal stability Information provided by Designers Molecules
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Physical Properties	Metric	English	Comments

Viscosity	1000 - 2000 cP	1000 - 2000 cP	Cone and Plate @ 5 rpm
Molecular Weight	689 g/mol	689 g/mol
Storage Temperature	<= 5.00 °C	<= 41.0 °F

Mechanical Properties	Metric	English	Comments
Tensile Modulus	0.500 GPa	72.5 ksi	cured with 2% Dicumyl Peroxide

Electrical Properties	Metric	English	Comments
Dielectric Constant	2.43 @Frequency 2.00e+10 Hz	2.43 @Frequency 2.00e+10 Hz	Cavity Perturbation Method
Dissipation Factor	0.0020 @Frequency 2.00e+10 Hz	0.0020 @Frequency 2.00e+10 Hz	Cavity Perturbation Method

Thermal Properties	Metric	English	Comments
CTE, linear	200 µm/m-°C	111 µin/in-°F	a2
Glass Transition Temp, Tg	<= 0.000 °C	<= 32.0 °F
Decomposition Temperature	>= 400 °C	>= 752 °F	neat, in air

Descriptive Properties
Appearance	Yellow to amber liquid
Weight Loss	<1.0%		@ 300°C (neat, in air)

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PDESGN003 / 255367

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