Effect of density on physical and mechanical properties of reconstituted small-sized bamboo fibrous sheet composite

摘要

The effect of density on physical and mechanical properties of phenolic-impregnated cold-pressing reconstituted small-sized bamboo fibrous sheet composite was evaluated. The results indicated that with the density increased from 0.85 g/cm~3 to 1.20 g/cm~3: water absorption decreased, thickness swelling increased first and then decreased; the value of modulus of rupture (MOR) increased from 120 MPa to 230 MPa, R~2 was 0.885; the value of modulus elasticity(MOE) increased from 1.8×10~4 MPa to 2.8×10~4 MPa, R~2 was 0.978; the shearing strength (perpendicular loading) increased from 6.5 MPa to 18 MPa, R~2 was 0.978; the shearing strength (parallel loading) increased from 6.3 MPa to 26 MPa, R~2 was 0.973; the compression parallel to grain values increased from 80 MPa to 120 MPa.