Manufacturing technology of composite particleboard using waste newspaper and wood particles

Objective  To provide a basis for wastepaper recycling and create important economic, ecological and environmental benefits.

Method  Composite particleboard was manufactured using waste newspaper and wood particles of mixed wood species with adhesives under hot pressing. Effects of the addition amount of wastepaper, amount of urea formaldehyde resin (UF), and hot pressing parameters on physical and mechanical properties including the modulus of rupture (MOR), modulus of elasticity (MOE), internal bonding strength (IBS) and thickness swelling rate (TSR) of composite particleboard were studied.

Result  The optimal manufacture parameters were 11% UF, 10% wastepaper and 1.0% self-made wax emulsion under 190 ℃ of hot pressing temperature and pressing 34 s·mm^–1. The formaldehyde emission from the manufactured composite particleboard was 0.002 4 mg·g^–1 using the perforator method, which was much lower than the threshold value of 0.009 0 mg·g^–1 for E1 level based on the GB 18580—2001 standard. The MOR, MOE and IBS were 20.43, 3 431 and 0.57 MPa respectively, and the TSR was 1.7%. These properties exceeded the requirements of P2-type particle board at dry condition according to GB 4897—2015 standard.

Conclusion  It is an effective way to utilize wastepaper and wood particles for producing composite particleboard.