Because the wheat straw or rice straw-based panel uses isocyanate resin (MDI) as adhesive, the resin does not release free harmful gases after curing, so it is called "green" wood-based panel.
Wheat straw board is between medium density fiberboard and wood particleboard in performance. It is a homogeneous board similar to MDF, and its surface is very smooth. Its production cost is lower than that of wood particleboard. It is superior to wood particleboard (20% lighter) in strength, dimensional stability, machinability, screw gripping ability, waterproof performance, veneer performance and density.
Extended data
1, technical indicators
Wheat straw board has the characteristics of no formaldehyde release, good waterproof performance, uniform section density, good reprocessability and so on, and its conventional mechanical properties are also excellent. Performance comparison test items of wheat straw board and particleboard: density of particleboard wheat straw board (g/cm3) 0.60 moisture content (%) 6.0 static bending strength (Mpa) 15 30.0 internal bonding strength (Mpa) 0.30 0.60 water absorption thickness expansion rate (%) 3.3 nail holding force of vertical board (n)1000.
2. Practical application
(1) At present, wheat straw is mainly used for papermaking, combustion, feed and returning orange stalks to the field. Making paper from wheat straw will seriously pollute the water quality, and burning wheat straw will seriously pollute the atmosphere, which is forbidden by the state. The production technology of wheat straw board developed by us, and then harvested twice, has practical significance for getting rid of poverty and entering a well-off society. Therefore, our technology has good economic benefits and extensive social benefits.
(2) The energy consumption of raw materials and production technology of wheat straw board is lower than that of wood particleboard, and its performance is much higher than that of wood particleboard, so the wheat straw board has strong market competitiveness.
Baidu encyclopedia-wheat straw board