A new type of soybean adhesive was successfully developed in Northeast Forestry University

Recently, Professor Gao Zhenhua from the School of Materials Science and Engineering of Northeast Forestry University successfully Research and develop a new soybean protein adhesive for wood processing with soybean meal as the main raw material. The adhesive is safe and environmentally friendly, has excellent performance and is easy to use. It has been produced and applied in many wood-based panel enterprises.

At present, "trialdehyde" adhesive is still mainly used in the production of wood-based panels in my country, and there are problems such as the release of formaldehyde which is harmful to human body. How to use abundant biomass resources to develop high-quality environmentally friendly bio-based adhesives has become a research hotspot in the wood industry at home and abroad in recent years.

As the fourth largest soybean producing area in the country, my country produces a large amount of soybean meal after extracting soybean oil every year. These soybean meals are mainly used as animal feed, with low added value.

As a kind of biomass polymer, soybean meal flour has the disadvantages of high viscosity, low bonding strength and poor water resistance due to its large molecular weight, complex components, and difficulty in chemical modification or modification. question. Based on the composition and structural characteristics of soybean meal, researchers from Northeast Forestry University have developed a highly active and environmentally friendly water-based functional modifier MPA through molecular design and structural optimization after years of research, which can effectively cross-link and Dispersed to form a new soybean adhesive that is stable, uniform, low viscosity, and has excellent bonding strength and water resistance.

The most obvious advantage of this soybean adhesive is that because it uses water as a solvent and does not add harmful components such as formaldehyde, phenol, and organic solvents, it can fundamentally solve pollution problems such as formaldehyde, phenol, and organic solvents, and is safe and environmentally friendly. , suitable for the production of formaldehyde-free wood-based panels. In addition, this soybean adhesive also has the characteristics of good process usability, long pot life, convenient use, excellent water resistance and wide applicability. Manufacturers can adjust the viscosity of soybean adhesive according to the production needs of wood-based panels, and the prepared soybean adhesive can be used for up to 8 hours. This kind of soybean adhesive can be used after mixing at room temperature, and can be widely used in the production of wood-based panels such as plywood, blockboard, and solid wood composite floor substrates, as well as the veneer of wood-based panels such as particleboard, fiberboard, plywood, and blockboard. .

The research and development of this technology has been funded by the Forestry Public Welfare Industry Research Project, the Natural Science Foundation of Heilongjiang Province, and the Central University Research Project of the Ministry of Education.