Environment-friendly toughening adhesive for reconstituted decorative lumber and application thereof

The invention relates to an environment-friendly toughening adhesive for reconstituted decorative lumber and application thereof. The environment-friendly toughening adhesive for the reconstituted decorative lumber is prepared from, by weight, 3-20 parts of modified nano-crystalline cellulose, 5-10 parts of water-based polymer, 100 parts of biomass composite emulsion, 1.5-5 parts of filler and 10-20 parts of a stress type crosslinking agent; 5-10 parts of the water-based polymer and 100 parts of the biomass composite emulsion are made into a main agent, 3-20 parts of the modified nano-crystalline cellulose and 1.5-5 parts of the filler are added into the main agent and mixed to be uniform, and then 10-20 parts of the stress type crosslinking agent is added to obtain the environment-friendly toughening adhesive for the reconstituted decorative lumber. The environment-friendly toughening adhesive for the reconstituted decorative lumber is high in environmental friendliness and good in toughening effect, no formaldehyde is introduced into the reconstituted decorative lumber when the environment-friendly toughening adhesive for the reconstituted decorative lumber is applied to preparation of the reconstituted decorative lumber, environmental friendliness of the reconstituted decorative lumber is greatly improved, and meanwhile due to the toughening effect of the adhesive, the toughness of the reconstituted decorative lumber is greatly improved.