LOCTITE CAT 28

Harmonization Code : 3506.91.90.99 | Prepared glues and other prepared adhesives, not elsewhere specified or included; products suitable for use as glues or adhesives, put up for retail sale as glues or adhesives, not exceeding a net weight of 1 kg ; Adhesives based on polymers of headings 3901 to 3913 or on rubber; Other ; Other

LOCTITE CAT 28

Main features

  • Low-Viscosity Catalyst Handling
  • Long-Pot-Life System Processing
  • STYCAST 2651MM Catalyst Pairing

Product Description

LOCTITE CAT 28 is the Part B epoxy cure catalyst used with LOCTITE STYCAST 2651MM for encapsulation; it is not the complete encapsulant. The catalyst has a typical viscosity of 275 mPa s at 25 deg C and density of 1.05 g/cm^3. In the STYCAST 2651MM system, the material-to-catalyst mix ratio is 100:12 by weight or 100:18.5 by volume. CAT 28 provides heat cure and long pot life when used with STYCAST 2651MM.

Key features

  • Low-Viscosity Catalyst: Typical CAT 28 viscosity is 275 mPa s at 25 deg C.
  • Long Pot Life: For heat-cured encapsulation with STYCAST 2651MM.
  • STYCAST 2651MM Mix Ratios: STYCAST 2651MM uses CAT 28 at 100:12 by weight or 100:18.5 by volume.

Applications

Catalyst component used with LOCTITE STYCAST 2651MM for encapsulation.

Product Family

LOCTITE CAT 28

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Color
The color
Black
Component System
Describes the number of components that must be supplied, mixed, or activated before application or cure.
Two
Thermal Properties
Thermal Conductivity
Thermal conductivity describes the ability of a material to conduct heat. It is required by power packages in order to dissipate heat and maintain stable electrical performance. Thermal conductivity units are [W/(m K)] in the SI system and [Btu/(hr ft °F)] in the Imperial system.
0.6 W/m.K
Chemical Properties
Water Absorption
0.04 %
Electrical Properties
Surface Resistivity
9.3×10 ^16 Ohms/sq
Volume Resistivity
Volume resistivity, also called volume resistance, bulk resistance or bulk resistivity is a thickness dependent measurement of the resistivity of a material perpendicular to the plane of the surface.
4.4×10^15 Ohms⋅cm

Additional Information

Technical properties

As-supplied / before-processing properties

CAT 28 is Part B only; mix ratios refer to the STYCAST 2651MM material-to-catalyst system.

PropertyValueUnitMethod / condition
Viscosity275mPa sTypical CAT 28 at 25 deg C
Density1.05g/cm^3Typical CAT 28
Material:catalyst mix ratio by weight100:12STYCAST 2651MM:CAT 28 system
Material:catalyst mix ratio by volume100:18.5STYCAST 2651MM:CAT 28 system

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