Page 527 - Handbook of Adhesives and Sealants

Excess moisture can cause requires primer Easy to extrude. Can be plied in transparent color mally requires primer to handle, low cohesive strength generally in the tic
Remarks blowing or sponging. Normally Sometimes requires preheating Fairly easy to apply. Available characteristics: high shrinkage. Similar to neoprene. Somewhat better wea

Toxicity during application None None None, strong odor None None None

Application methods GM, GP, K GM, GP, K GM, GP, K GM, GP, K, B, S GM, GP, K, B, S GM, GP, K

Pot life Two-part Chemical reaction Systems (Catalyst-cured) 3–9 months 6 months 3–9 months Solvent-release Systems 6–12 months 6–12 months 6–12 months CODE: GM—manually
Continued Curing time and temp range 14–21 days at 75 F 7–14 days at 75 F 21 days at 75 F 7–14 days at 75 F 7–14 days at 75 F . . .

Hardening Sealants, Nonrigid (flexible) Type 1 Curing characteristics Thermosetting elastomer, cures at room temperature. Curing accelerated by heat and/or moisture Thermosetting

TABLE 12.2 Sealant base Polyurethane ...... Silicone ........... Acrylic ............ ......... Neoprene .......... Hypalon Butyl ............. METHODS APPLICATION squeegee.

455