Formaldehyde Emission in Micron-Sized Wollastonite-Treated Plywood Bonded with Soy Flour and Urea-Formaldehyde Resin
| Autor: | Mohammad Ghofrani, Seyed Behzad Hosseini, Saman Ghahri, Hamid Reza Taghiyari, Antonios N. Papadopoulos |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Absorption of water
Formaldehyde 02 engineering and technology engineering.material lcsh:Technology Wollastonite Square meter lcsh:Chemistry chemistry.chemical_compound wollastonite Filler (materials) medicine Shear strength General Materials Science Food science lcsh:QH301-705.5 Instrumentation biobased resins 040101 forestry Fluid Flow and Transfer Processes lcsh:T Process Chemistry and Technology Urea-formaldehyde General Engineering food and beverages 04 agricultural and veterinary sciences minerals 021001 nanoscience & nanotechnology lcsh:QC1-999 Computer Science Applications wood composite panels lcsh:Biology (General) lcsh:QD1-999 chemistry lcsh:TA1-2040 engineering 0401 agriculture forestry and fisheries Swelling medicine.symptom lcsh:Engineering (General). Civil engineering (General) 0210 nano-technology formaldehyde emission lcsh:Physics |
| Zdroj: | Applied Sciences Volume 10 Issue 19 Applied Sciences, Vol 10, Iss 6709, p 6709 (2020) |
| ISSN: | 2076-3417 |
| DOI: | 10.3390/app10196709 |
| Popis: | Soy flour was partly substituted for urea-formaldehyde (UF) resin with different content to investigate its effect on formaldehyde emission in three-layer plywood panels. In each square meter of panels, 300 g of resin was used (wet weight basis of resin). Micron-sized wollastonite was added to the resin mixture at 5% and 10% consumption levels (wet weight basis of resin) to determine its potential effects as a reinforcing filler to mitigate the negative effects of addition of soy flour. Results showed a decreasing trend in formaldehyde emission as soy flour content increased to 20%. The highest shear-strength values were observed in panels with 10% and 15% soy flour content. The addition of wollastonite did not have a significant effect on formaldehyde emission, but it decreased the shear strength in soy-treated panels, although the values were still higher than those of control panels. Wollastonite significantly mitigated the negative effects of soy flour on the water absorption and thickness swelling of panels. It was concluded that 10% of soy flour and 5% of wollastonite provided the lowest formaldehyde emission and the most optimum physical and mechanical properties. |
| Databáze: | OpenAIRE |
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