Accessory

Products

67

DeltaBond™ 156

DeltaBond™ 155

THERMAL COMPOUNDS, ADHESIVES AND INTERFACE MATERIALS

DELTABOND™156

Ordering Guide - Resin and Hardener

Resin

Hardener

Part No.

Container

Part Number

DeltaBond™ 156

156-K

DELTABOND™155

Mixing Proportions and Working Properties

Parts of hardener per 100 parts of resin

by volume 100

*Working Time - at 77°F

90 min

†Initial cure time

77°F

8 hrs

150°F

45 min

250°F

20 min

‡Post-cure time at a temp in °F

4 hrs @ 200°F

‡Alternate room temp. aging time at 77°F

4 days

Working consistency (77°F)

paste

Working viscosity (77°F) cps

paste

DELTABOND™155

Ordering Guide - Resin and Hardener

Resin

Hardener

Part No.

Container

Part Number

DeltaBond™ 155

155

Kit (3 oz resin, 3 oz hardener)

Included in P/N 155

DELTABOND™155

Characteristics

Typical Properties Fully Cured

Thermal conductivity -

W/(m) (°K)

0.836

5.8

Thermal resistivity - (°C) (in.)watt

47

Bond shear strength

77°F

2,600

1 in. overlap - psi

125°F

—

etched aluminum to

etched aluminum

212°F

—

Heat distortion point - °F

130

Minimum dielectric strength,

v/mil, 0.125 in. sample

400

Max operation

Continuous

65

temp - °C

Intermittent

100

thixotropic paste, it offers high heat transfer, low shrinkage, and a coefficient of thermal expansion comparable to that of

copper and aluminum. This adhesive is principally used to form thermally conductive joints in fabricated heat sinks and

between heat sinks and power devices. When used to bond semiconductors to heat sinks, it also serves as an electrical

available in kit size. Simply squeeze out equal lengths and mix to uniform color. Shelf life: 1 year.

components where heat must be effectively transmitted. Recommended for electromechanical assemblies to bond com-

ponents and dissipate heat, it replaces mechanical fasteners and compressible pads, silicone grease, and epoxies; elimi-

nates air entrapment, and other variables related to epoxy mixing. This soft paste requires no mixing and flows easily to

allow thin bond lines. Primer activated, cure begins upon assembly. DeltaBond™ Activator fixtures at room temperature

in less than 5 minutes. Full strength is developed in 4 to 12 hours and fillets become dry to the touch in 24 hours. It is

kit size; order 156-K (25 ml Syringe and Activator Kit). Shelf life: 1 year.

DELTABOND™156

Characteristics

Typical Properties Fully Cured

Test

Results

ASTM

Temperature Range

-65 to 300° F

(-54 to 149° C)

300° F to (177° C)

Intermittent

Tensile Strength, at break

2360 psi

D638

Modulus

233,000 psi

D638

Elongation, at break

7.75%

D638

Outgassing

2.5% TLM

E595

0.05% CVCM

Coefficient of Thermal Expansion

Tensile Shear

2500psi

D1002

Thermal Conductivity, K

(absolute at 86° F (30° C)

(0.50 W/m °C)

DELTABOND™156

Typical Electrical Properties

Test

Results

ASTM

Dielectric Strength

220 volts/mil

D149

Dielectric Constant, 77°F (25°C)

D150

100 Hz

14.92

1000 Hz

14.26

1MM Hz

12.34

Dissipaton Factor, 77°F (25°C)

D150

100 Hz

0.05

1000 Hz

0.03

1MM Hz

0.06

Volume Resistivity

D257

Surface Resistivity

D257

Description

Note: The absolute thermal conductivity test was developed specifically

for measuring thermal properties of thin film adhesive bonds.

Note: DeltaBond™ Thermally Conductive Adhesive-High Strength

contains a metallic filler which, in certain applications, may have an

effect on electrical properties. Therefore, test each particular appli-

cation to ensure that electrical properties are as required.

Resin Kit Hardener Syringe - 0.85 fl oz - 25 ml - 2 oz

net/0.44 oz fl contents bottle -12ml

Included in kit hardener with brush applicator -

4.2 oz total wt/kt

* Since the hardener/resin reaction is exothermic, it is important that batch size be matched to hardener speed. Working times given are for approximate batch sizes: A—200 gms,

B—200 gms. Larger batch sizes will greatly reduce working time.

† After initial cure, material may be handled, removed from fixture, etc., but has not yet achieved full properties and should be room temperature aged or post-cured as shown to

achieve full physical and electrical properties.

‡ After initial cure, material may be brought to full physical and electrical properties during post-cure or may be room temperature aged for charted length of time to achieve same

full properties.

The information contained herein is based on data believed to be reliable but we do not assume responsibility for accuracy. All such information is used at the customer's own risk,

conditions of use being beyond our control.

Hardener Type

DeltaBond™155

Model

Number

Model

Number

WTS001_p50-68

6/14/07

10:46 AM

Page 67

3