Moisture durability of four moisture cure urethane adhesives
| Autor: | Jonathan Verhoff, Steven Rosenberg, Karthik Ramani, Norman Blank |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Materials science
Moisture technology industry and agriculture Thermosetting polymer Modulus Surfaces and Interfaces General Chemistry Accelerated aging Durability Surfaces Coatings and Films chemistry.chemical_compound Lap joint chemistry Mechanics of Materials Materials Chemistry Adhesive Composite material Polyurethane |
| Zdroj: | Journal of Adhesion Science and Technology. 16:373-393 |
| ISSN: | 1568-5616 0169-4243 |
| DOI: | 10.1163/156856102760067172 |
| Popis: | Moisture durability of four low modulus adhesives was examined. The four low modulus adhesives all had the same basic moisture cure polymer but contained different fillers and additives. Hot-dipped galvanized steel was bonded to random fiber-reinforced unsaturated polyester and aged in two moisture environments for various durations. Adherend surface wipes included acetone, isopropyl alcohol and a typical surface contamination for galvanized steel (an organic lubricant). Diffusion coefficients, moisture uptake and modulus changes due to moisture environment were determined for the adhesives and the fiber-reinforced plastic (FRP). The moisture cure adhesive with clay and poly(vinyl chloride) (PVC) as fillers (adhesive 252) had the highest retained lap joint strengths. Initially, adhesive 252 had single lap joint strengths of 1.47 ± 0.08 MPa for acetone-wiped joints and 1.39 ± 0.33 MPa for organic lubricant-wiped joints. After accelerated aging in a cataplasma environment for 9 weeks, lap joint strengths fe... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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