The present application relates to the field of adhesives, and specifically discloses a degradable environmentally-friendly
adhesive for
woodworking and a preparation method therefor. The
adhesive comprises the following raw materials in parts by weight: 10-20 parts of a solution in which
polyvinyl alcohol is dissolved, 3-10 parts of a filler, 45-60 parts of a
copolymer emulsion, 10-20 parts of a stabilizer, 1-3 parts of
glycerol, and 1-4 parts of an auxiliary agent. The
adhesive has a
solid content of 40-50% and a
viscosity of 15,000-19,000 cps (25°C). The preparation method for the adhesive comprises the following steps: stirring a
copolymer emulsion, adding a stabilizer thereto and uniformly dispersing same, then adding a solution in which
polyvinyl alcohol is dissolved, and performing homogenization to obtain a mixture; and adding a filler to the mixture, increasing the stirring speed until the filler is fully dispersed and the resulting
colloid is homogeneous and free of visible particles, then adding
glycerol, an auxiliary agent and an appropriate amount of water thereto, and stirring same until the
system is homogeneous and free of bubbles. The obtained adhesive has good bonding performance, and still a has good
bonding strength after being placed at a relatively high temperature for a long time.