PERMABOND TA4246

Harmonization Code : 3506.10.00.00 | 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

PERMABOND TA4246

Main features

  • 1-2 Minute Aluminum Fixture
  • 33-35 N/mm2 Steel Shear
  • No-Mix Initiator 46 System

Product Description

Permabond TA4246 is a two-part, no-mix toughened acrylic structural adhesive used with Permabond Initiator 46. The adhesive is applied to one surface and the initiator to the other, eliminating premixing while supporting room-temperature assembly. It fills gaps up to 0.5 mm, fixtures aluminum in 1-2 minutes at 23 deg C, and reaches working strength in 15-30 minutes. After a 24-hour cure, typical shear strength is 33-35 N/mm2 on mild steel and 20-30 N/mm2 on aluminum, with 150-180 N/25 mm peel strength. Applications include structural bonding across supported metals, plastics, ceramics, and other substrates.

Key features

  • No-Mix Structural Bonding: Separate adhesive and Initiator 46 application eliminates premixing.
  • 1-2 Minute Aluminum Fixture: Fixtures gap-free aluminum in 1-2 minutes at 23 deg C.
  • High Shear and Peel: Provides 33-35 N/mm2 steel shear and 150-180 N/25 mm aluminum peel strength.

Applications

Applications include structural bonding of supported metals, plastics, ceramics, wood, glass, and composite materials.

Product Family

PERMABOND TA4246

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TDS, SDS & Technical Documents

Technical Specifications

General Properties
Appearance
Appearance at room temperature.
Amber liquid
Mix Ratio
The amount of a constituent divided by the total amount of all other constituents in a mixture
10:1 approximately
Specific Gravity
Specific gravity (SG) is the ratio of the density of a substance to the density of a reference substance; equivalently, it is the ratio of the mass of a substance to the mass of a reference substance for the same given volume. For liquids, the reference substance is almost always water (1), while for gases, it is air (1.18) at room temperature. Specific gravity is unitless.
1.0
Physical Properties
Viscosity
Viscosity is a measurement of a fluid’s resistance to flow. Viscosity is commonly measured in centiPoise (cP). One cP is defined as the viscosity of water and all other viscosities are derived from this base. MPa is another common unit with a 1:1 conversion to cP. A product like honey would have a much higher viscosity -around 10,000 cPs- compared to water. As a result, honey would flow much slower out of a tipped glass than water would. The viscosity of a material can be decreased with an increase in temperature in order to better suit an application
15,000 – 35,000 mPa.s
Other Properties
Maximum gap fill
0.5 mm
Storage Temperature
2 - 7 °C
Curing Conditions
Fixture Time
1-2 minutes
Mechanical Properties
Peel Strength
150-180 N/25mm
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.
0.1 W/m.K
Electrical Properties
Dielectric Strength
Dielectric strength is measured in kV per mm and is calculated by the Breakdown voltage divided by the thickness of the tested material. Those two properties go hand in hand and while Breakdown voltage is always thickness dependent, dielectric strength is a general material property. As an example, the dielectric strength of Polyimide is 236 kV/mm. If we place 1mm of Polyimide between two electrodes, it will act as an insulator until the voltage between the electrodes reaches 236 kV. At this point it will start acting as a good conductor, causing sparks, potential punctures and current flow.
30-50 kV/mm
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.
2 x 10¹³ Ohms⋅cm

Additional Information

Technical properties

As supplied / before processing

Resin values are shown with processing values for use with Permabond Initiator 46.

Property Value Unit Method / condition
AppearanceAmber liquidAs supplied
Viscosity15,000-35,000mPa s20 rpm at 25 deg C
Specific gravity1.0Resin as supplied
Use ratioApprox. 10:1TA4246 adhesive to Initiator 46
Maximum gap fill0.5mmTypical curing property
Cure milestonesFixture: 1-2; handling: 2-4; working strength: 15-30minutesAluminum, no gap, at 23 deg C
Full cure24hoursAt 23 deg C
Storage temperature2 to 7deg CRecommended storage range
Technical properties

After processing / final state

Values are typical for fully cured adhesive; strength depends on surface preparation and bond gap.

Property Value Unit Method / condition
Shear strength - mild steel33-35N/mm2ISO 4587
Shear strength - aluminum20-30N/mm2ISO 4587
Peel strength - aluminum150-180N/25 mmISO 4578
Tensile strength30N/mm2ISO 37
Impact strength50-60kJ/m2ASTM D-950
Coefficient of thermal expansion80 x 10^-61/KASTM D-696
Thermal conductivity0.1W/(m K)ASTM C-177
Dielectric strength30-50kV/mmASTM D-149

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