The invention belongs to the field of binder-less environment-friendly artificial board production, and particularly relates to a method for producing binder-less environment-friendly artificial boards by means of
hot pressing with steam exploded stalks as raw materials. The method includes steps of chopping the stalks, dipping the chopped stalks into alkali solution and then taking out with
water content controlled, performing a
steam explosion process on the stalks to obtain steam exploded stalks,
drying the steam exploded stalks until reaching a certain
water content, and finally performing
hot press molding. In the method, alkali
lignin is dissolved out during high-temperature digesting of the alkali-process
steam explosion, and is blown instantly to damage
cell wall structures, so that active groups of three components in the raw materials are exposed fully. In the later
hot press molding process, the
lignin dissolved out is subjected to
condensation reaction with
polysaccharide and
lignin of the raw materials at a high temperature so as to form a
binding effect. By the method, binder-less binding of the stalks is realized, cost for adding binders is saved,
processing and production lines are simplified, environmental
pollution caused by
synthetic resin binders is reduced, production cost is lowered, and a new effective way is provided for artificial board production.