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| Application of peanut protein-based adhesive in plywood hot pressing process |
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| KeyWord:peanut protein-based adhesive peanut protein plywood hot pressing process |
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| Abstract: |
| In order to promote the application of peanut protein-based adhesive in plywood to reduce the release of formaldehyde, the hot pressing process of application of peanut-based protein adhesive in plywood was optimized, and the influences of hot pressing conditions on the wet bonding strength of plywood were analyzed. The results showed that the influence of the hot pressing temperature was the greatest, followed by hot pressing time, glue dosage and hot pressing pressure. The optimal hot pressing conditions were obtained as follows: hot pressing temperature 120?℃, hot pressing time 8 min, hot pressing pressure 1.2 MPa and glue dosage 220 g/m2. Under these conditions, the wet bonding strength of plywood was 109 MPa, meeting the requirement for class I plywood （≥0.70 MPa）in national standard GB/T 9846—2015. The hot pressing process could be realized in the industrial production. The infrared spectrum analysis showed that hydrophilic group of solidified peanut protein-based adhesive decreased and amide bond increased, indicating that crosslinking reaction occured in the group. |
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