POSSIBILITY OF USING COMPRESSED RICE STRAW AS AN INSULATION MATERIAL

Shetawy, M.A. E.; El Bessoumy, R.R.; Badr, M.M.

doi:10.21608/jssae.2014.49781

POSSIBILITY OF USING COMPRESSED RICE STRAW AS AN INSULATION MATERIAL

Document Type : Original Article

Authors

¹ Structures and environmental control Dept. Fac. of Agric. Eng., Al-Azhar Univ., Cairo, Egypt.

² Products Process Dept., Fac of Ag. Eng. Al-Azhar Univ., Cairo, Egypt.

10.21608/jssae.2014.49781

Abstract

The present work introduces composite manufactured from grounded rice straw via addition urea-formaldehyde "UF" resin as a binding material. The different percentages of commercial urea-formaldehyde resin were used by weight as binder in manufacturing of the composite. The expansion percentage "E" (%), bulk density "Bd" (kg/m³) and thermal conductivity "k" (W/m.^oC) of the manufactured composite affected by different content of binding material "Bm" UF resin (0, 20, 30, 40 and 50%), different formation pressure "FP" of (5.7, 12.4 and 18.5 MPa) and elapsed time (days) after releasing formation pressure. The results showed that expansion percentage "E" (%) increased with increasing of formation pressure "FP" and elapsed time (days) at different binding material "Bm" (%). The bulk density "Bd" (kg/m³) was higher at binding material percentages "Bm" of 50 % under formation pressures of 18.5 MPa, after 0, 7 and 14 days. The bulk density “Bd” (kg/m³) was lower at binding material percentages "Bm" of 0 % (control) under formation pressures of 5.7 MPa, after 0, 7 and 14 days. The thermal conductivity "k"(W/m.^oC) decreased with increasing formation pressure "FP" and binding material percentage.