1. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
, Pedro Costa Pinto on behalf of TE-VSC

2. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
Good NEG
Activation

3. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
EDMS

4. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
EDMS

5. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
EDMS
Mechanical cleaning of projection
Mechanical cleaning of the part of the plate that received the projection. Other side of plate is not touched and considered as reference.
Plate A: scotch-brite on half of the plate
Plate B: diamond paper on half of the plate
Plate C: reference plate (no mechanical cleaning and no projections)
Further Cleaning
Plate A and B were cleaned with solvent, (VERTREL Sion from DuPont), at room temperature, by rinsing.

6. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
EDMS
coating
Activation
Adhesion test

7. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
EDMS
Pat handy adhesion test
Pull tests were performed with a Pat handy tester (DFD instruments). Dollies with Ø 5.7 mm were glued on the coated samples with Epoxy E1100S. Procesure in EDMS

8. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
EDMS
Pat handy adhesion test
Pull tests were performed with a Pat handy tester (DFD instruments). Dollies with Ø 5.7 mm were glued on the coated samples with Epoxy E1100S. Procesure in EDMS
schotch-brite
Diamond paper
ref
Both treatments are efficient to recover adhesion.
Reference side probably get some projections but are not optically visible. These projections reduce adhesion (but remain in high values)
treated
Ref side

9. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Acceptable
adhesion
EDMS
Pat handy adhesion test
Pull tests were performed with a Pat handy tester (DFD instruments). Dollies with Ø 5.7 mm were glued on the coated samples with Epoxy E1100S. Procesure in EDMS
Both treatments are efficient to recover adhesion.
Reference side probably get some projections but are not optically visible. These projections reduce adhesion (but remain in high values)

10. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Good NEG
Activation
NOT DONE YET
Program:
26.08 Sample I (with projections) will be treated by schotch-brite or diamond paper and degreased with solvent.
29.08 assembling in coating system
30.08 NEG coating
01.09 activation in XPS.

11. Validation of “toile diamant” and “scotch-brite” to enhance adhesion
Conclusions:
Both schotch-brite and diamond paper enhance adhesion after e-beam welding projections
Non optically visible projections decrease adhesion but do not induced spontaneous delamination.
Compatibility with NEG activation by the end of week 35
Intermediate steps will be also analysed afterwards (surface composition after schotch-brite/diamond paper with/without degreasing)