A.10.12. Scotchweld EC 2216 (5 pbw base / 7 pbw accelerator)

PRODUCT

Type

2-part structural adhesive.

Chemical Composition

Modified Epoxy

Manufacturer

3M Belgium

Hermes Laan, 7,

B-1831 Diegem

Belgium

Tel: +32 (0)2 722 51 11

Fax: +32 (0)2 720 02 25

Email:

www.3m.com

EXPERIENCE & AVAILABILITY

Development Status

Commercial Product

Cost Range

Medium

Lot Reproducibility

Fair

Space Experience

Extensive

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

Nature

Typical Value

Remarks

Pot Life

90 mins.

Manufacturers Data

Tensile Shear Strength

21.3 MPa

@ 24C

Tensile Peel Strength

3.6 Nmm-1

@ 24C

Specific Heat

1.34 J g -1 C -1

@ 0C

Glass Transition Temperature

11.8 C

TMA

Thermal Expansion Coefficient

45 x 10-6 C 1

182 x 10-6 C 1

-100C to 0C

40C to 100C

PROPERTIES RELEVANT TO SPACE USE

Nature

Typical Value

Type of Test

Temperature Range

-50C to 80C.

Long term.

Toxicity/Offgassing

Pass

NASA NHB 8060-1A

Outgassing

TML = 1.42%, RML =0.75%, CVCM = 0.01%

ECSS-Q-70-02

Flammability

Pass

NASA NHB 8060-1B

SPECIAL RECOMMENDATIONS

          The accelerator (catalyst) is sensitive to atmospheric humidity and CO2. Minimal exposure to atmosphere is recommended during storage and mixing.

          Recommended cure is 2 hours at 70C.

          Quality control test by micro-VCM method (ECSS-Q-70-02) is recommended.