期刊
CHEMICAL ENGINEERING JOURNAL
卷 428, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.132390
关键词
Soy protein-based adhesive; Core-shell hybrid; Bonding strength; Water resistance; Flame retardancy
资金
- National Natural Science Foundation of China [51873082, 52073123, 51903106]
- Distinguished Young Natural Science Foundation of Jiangsu Province [BK20200027]
The development of a soy protein-based adhesive incorporated with tailor-made core-shell hybrids has shown improved bonding strength, water resistance, and flame retardancy. The hybrid design serves as reinforcing elements and crosslinkers to enhance the adhesive properties, making it a potential alternative for non-formaldehyde adhesive in wood manufacturing applications.
A weak bonding strength and poor water resistance of soy protein-based adhesives have limited their application as a bio-based non-formaldehyde adhesive in the wood manufacturing industry. In this work, a soy protein-based adhesive was developed by incorporating tailor-made core-shell hybrids, which were synthesized by codeposition of biomass Tannic acid (TA) as hard cores and silanized phenylphosphodichloride (BPOD(Si)) as flexible shells. For the soy protein-based adhesive system, the incorporated hybrids were designed as reinforcing elements and crosslinker to construct multiple crosslinked networks, which are beneficial to improve the bonding strength, water resistance and flame retardancy of the final adhesive. For example, the particleboards could be made by mixing with soy protein-based adhesives which show a rupture modulus of 15 MPa, an elasticity modulus of close to 2000 MPa and an internal bonding strength of 0.44 MPa, an increase of 110%, 110% and 145% respectively were registered when comparing with those of pristine soy protein-based adhesive. In addition, the soy protein-based adhesive was also designed to be potentially applied in furniture particleboard manufacturing area, and the flame retardancy could be achieved by a synergistic effect of denaturant borax and flame retardant in hybrids. Consequently, the soy protein-based adhesive showed a Limited oxygen index (LOI) value of 28.7% and the V-1 rating in UL-94 test. Therefore, this work provides a feasible method to produce nonformaldehyde and multifunctional soy protein-based adhesives.
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