The invention provides a method for manufacturing a
soybean protein modified
adhesive formaldehyde-
free medium-density
fiberboard, and belongs to the technical field of density
fiberboard manufacture. The method comprises the following steps: heating, stirring and mixing raw materials (soybean pulp, a denaturing agent, a crosslinking agent, a defoaming agent, a
preservative and water) to react; preparing the
soybean protein formaldehyde-free
adhesive by virtue of a
colloid mill and a
homogenizer; adding a water-proofing agent, a curing agent and a
buffering agent into the
soybean protein formaldehyde-free
adhesive, stirring and mixing at
room temperature, and uniformly mixing with wood fibers; performing
drying, paving and hot-pressing to prepare the soybean
protein modified adhesive formaldehyde-
free medium-density
fiberboard. The method is environment-friendly and non-
pollution; the soybean
protein modified adhesive formaldehyde-
free medium-density fiberboard is high in
adhesion strength, good in water proofing, low in price, low in
viscosity and easy to treat and process, can be subjected to hot-pressing and cold-pressing in application, and is not easy to crack. The soybean
protein modified adhesive formaldehyde-free medium-density fiberboard can be adhered to fibers and the like, and the
processing process can be controlled, and an environment-friendly fiberboard can be manufactured.