Waterborne polyurethane non-formaldehyde adhesive for artificial board

The invention discloses a waterborne polyurethane non-formaldehyde adhesive for an artificial board. The waterborne polyurethane non-formaldehyde adhesive for the artificial board is prepared from mixing the following raw materials in parts by weight: 75 to 95 parts of oxidized cellulose composition primary adhesive, and 5 to 25 parts of cross-linking agent; the oxidized cellulose composition primary adhesive is prepared from the following raw materials in parts by weight: 200 to 265 parts of fiber powder with the grain size being 75 to 90 mu m, 0.8 to 1.5 parts of TEMPO, 1.6 to 3.0 parts of sodium bromide, 1.0 to 3.0 parts of sodium hypochlorite with the active chlorine content being 7.0 to 7.5 weight percent, 30 to 50 parts of PVA, 0 to 30 parts of starch, 45 to 60 parts of urea, 3 to 3.5 parts of NP-10, 15 to 18 parts of sodium hydrogen sulfite, and 650 to 1,000 parts of water; the cross-linking agent is prepared from the following raw materials in parts by weight: 10 parts of surface active agent AEO or/a