Research Article
Effect of Addition of Boric Acid and Borax on Fire-Retardant and Mechanical Properties of Urea Formaldehyde Saw Dust Composites
Table 1
Mechanical properties and water absorption of modified saw dust composite.
| | Different modification samples | Mechanical properties | Water absorption after immersion in water | | Bending strength (N/mm2) | MOE (N/mm2) | Wt% (2 hr) | Wt% (24 hr) | Wt% (7 day) |
| | Saw dust + urea formaldehyde (control) | 12.5 | 1161.4 | 90.6 | 89.3 | 110.9 | | Saw dust + UF + paraffin wax | 8.2 | 982.9 | 70.9 | 70.2 | 81.5 | | Saw dust UF + P.W + 0.5% (BA + BX) | 7.6 | 948.6 | 66 | 66 | 77.1 | | Saw dust + UF + P.W + 1% (BA + BX) | 7 | 902 | 62.3 | 61.6 | 71.8 | | Saw dust + UF + P.W + 5% (BA + BX) | 5.049 | 863.5 | 56.1 | 55.2 | 60 |
|
|
