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| Content Provider | Springer Nature Link |
|---|---|
| Author | Hori, Naruhito Asai, Kentaro Takemura, Akio |
| Copyright Year | 2008 |
| Abstract | We investigated the curing behavior of an emulsion polymer isocyanate adhesive for wood with different ethylene-vinyl acetate (EVA) emulsions, because it was found that the ethylene/vinyl acetate weight composition (E/VA ratio) of EVA could control the volume of gas emitted from the adhesive. EVA with higher VA content reduced the volume of gas emitted at the initial stage, which was caused by the extent of the reaction between the NCO groups and water. The reaction scheme of NCO could not be determined because the broad infrared (IR) absorptions due to CaCO3 and water masked the information of the NCO products in IR spectra. Examination of the degree of swelling suggested that the adhesive films stored for 3 weeks had the same degree of cross-linking structure in spite of the variation of EVA. This result was supported by IR spectroscopy, which showed the same amounts of NCO remained in these films. All the adhesives prepared in this study had satisfactory bond performance. The findings indicate that the E/VA ratio affects the curing behavior of the adhesive in the initial curing stage, whereas the cross-linking structure and the bond performance were independent of the E/VA ratio after storage for 3 weeks. |
| Starting Page | 294 |
| Ending Page | 299 |
| Page Count | 6 |
| File Format | |
| ISSN | 14350211 |
| Journal | Journal of Wood Science |
| Volume Number | 54 |
| Issue Number | 4 |
| e-ISSN | 16114663 |
| Language | English |
| Publisher | Springer Japan |
| Publisher Date | 2008-05-23 |
| Publisher Place | Japan |
| Access Restriction | Subscribed |
| Subject Keyword | Isocyanate Ethylene-vinyl acetate copolymer API EPI Wood adhesive Characterization and Evaluation of Materials Materials Science Wood Science & Technology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Biomaterials Forestry |
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