A.10.1. Araldite AV138/HV998 (100/40 pbw)

PRODUCT

Type

2-part adhesive paste

Chemical Composition

Epoxy

Manufacturer

Vantico Ltd.

          Duxford,

          Cambridge CB2  4QA

          UK

Tel: +44 (0)1223 832121

Fax: +44 (0)1223 493230

Email: info@vantico.com

www.vantico.com

EXPERIENCE & AVAILABILITY

Development Status

Commercial Product

Cost Range

Low

Lot Reproducibility

Unknown

Space Experience

Good

GENERAL PROPERTIES (Physical, Mechanical, Thermal, Electrical, Optical)

Nature

Typical Value

Remarks

Pot Life

30 mins.

@ 23°C

Tensile Strength

43 MPa

@ 40°C

Fatigue Strength

>107 cycles

@ 25% Max. Strength

Thermal Expansion Coefficient

67 x 10-6 °C -1

Between 18°C and 93°C

Thermal Conductivity

0.35 W m -1 °C -1

@ 30°C

Volume Resistivity

1.9 x 1013 W m

@ 22°C

Glass Transition Temperature

66 °C

T.M.A.

PROPERTIES RELEVANT TO SPACE USE

Nature

Typical Value

Type of Test

Temperature Range

Up to 120°C.

Long term.

Toxicity/Offgassing

Pass

NASA NHB 8060-1A

Outgassing

TML = 0.84%, RML =0.57%, CVCM = 0.02%

ECSS-Q-70-02

Flammability

Pass 24.5% O2

NASA NHB 8060-1B

SPECIAL RECOMMENDATIONS

·          Mixing ratio 100 parts AV138 to 40 parts HV998 by weight.

·          The material is available in thicknesses of 12, 25, 50, 75 and 125 mm.

·          Sensitivity to water absorption by the catalyst before use. This may degrade outgassing and mechanical properties.

·          Does not pass odour test with cure at RT; passes with cure at 65°C.

·          Recommended cure time: 48 hours at room temperature.

·          AV138M is newer version of AV138.