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T-peel strength values of plasticized PVC/PUD/plasticized PVC joints and cross-hatch adhesion values evaluated according to ASTM D3359-09 standard.
| PUD | T-Peel Strength a | Cross-Hatch Adhesion (ASTM D3359-09) | |
|---|---|---|---|
| After 1 h | After 72 h | ||
| PU before prepolymer | 5.8 ± 0.7 (CA) | 13.0 ± 3.0 (CS) | 5B |
| PU during prepolymer | 5.6 ± 0.1 (CA) | 13.0 ± 2.0 (CS) | 5B |
| PU after prepolymer | 6.5 ± 0.5 (CA) | 11.0 ± 1.0 (CS) | 5B |
a Locus of failure: Cohesive failure of the adhesive (CA), Cohesive failure of the substrate (CS).
