期刊
COMPOSITES PART B-ENGINEERING
卷 155, 期 -, 页码 204-211出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2018.08.017
关键词
Soybean meal adhesives; Bonding strength; Kenaf fibers; CaCO3; N-cyclohexyl-2-benzothiazole sulfonamide
资金
- National Key Research and Development Program of China [2017YFD0601205]
- National Natural Science Foundation of China [51779005/E090301]
- Fundamental Research Funds for the Central Universities [2016ZCQ01]
The development of soybean meal-based adhesive is currently hindered by its weak bonding strength and poor water resistance. This study aims to develop a natural fiber-reinforced soybean meal adhesive with enhanced water resistance and bonding strength. To improve the interfacial interaction between the matrix and kenaf fiber (KF), the fiber was modified using a two-step process, (1) KF was treated with calcium carbonate (TKF) via an inorganic nanoparticle impregnation (INI) process; and (2) N-cyclohexyl-2-benzothiazole sulfenamide (CZ) was chemically bonded onto TKF to obtain the functionalized fiber (TKF-s-CZ). The bonded CZ molecules on TKF were found to have stronger interfacial interaction between TKF-s-CZ and the matrix, accelerating the cross linking reaction. The resultant PSM/TKF-s-CZ adhesive exhibited higher bonding strength and water-resistance than the control one. Compared to the control one, the wet shear strength of the PSM/TKF-s-CZ adhesive increased from 0.38 MPa to 1.64 MPa, counting for an increase of 331.57%. The moisture uptake was reduced to 8.75% (10.76% of the PSM/TKF adhesive). This work also provides a new design strategy for the surface modification of filler and prepares a renewable, value-added soybean meal-based adhesive, which could play an important role in expanding the industrialized applications of these adhesives.
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