KE-3450 is a one-component acetone-type flame-retardant silicone rubber.
It is a successor of KE-3490 and has high reliability.

Features

• It has flame retardant. UL94 V-0
• This condensation-curing adhesive reacts with moisture when extruded from a tube or cartridge and cures at room temperature.
• We have reduced low-molecular-weight siloxane, which cause electrical contact failure.
• It has excellent adhesion properties for various materials.
• Excellent heat resistance, cold resistance, electrical properties, and weatherability.
• It is not corrosive to metals and has good curability and storage stability.

Applications

• Adhesion and sealing of various electrical and electronic components.

It is suitable for components on electronic boards,
power unit and so on.

Flame retardant test
Left: Silicone rubber / Right: synthetic rubber

General properties

Parameter Product name	KE-3450
Curing type (by product)	One-component condensation cure (Acetone)
Consistensy	Paste
Appearance Color	Gray
Tack free time min	4
Hardness   Durometer A	42
Tensile strength MPa	2.5
Elongation at break %	390
Lap shear strength (Al/Al) MPa	1.6
Flamability UL94	V-0
Low molecular siloxane content ∑D3-D10 ppm	‹ 300
Density at 23°C g/cm3	1.17
Volume resistivity TΩ·m	1
Dielectric breakdown strength kV/mm	30
Relative permittivity 50 Hz	3.2
Dissipation factor 50 Hz	2×10‒2
Thermal conductivity W/m·K	0.28

Lap shear strength

Parameter Adherend Product name		KE-3450
Lap shear strength MPa	Al	1.6
	Cu	1.2
	Polycarbonate	1.4
	ABS	1.2
	Epoxy resin	1.5
	66 nylon	1.3
	PVC (Rigid)	1.2
	Glass	1.7
	Phenol resin (Bakelite)	1.4

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