CAJ | 학술논문

目的：改善木质纤维与热塑性塑料的界面相容性,提高木塑复合材料的力学性能。方法采用毛细管上升法测定不同探测液在未改性玉米秸秆粉和硅烷偶联剂改性玉米秸秆粉表面的接触角,通过Owens 法计算玉米秸秆粉改性前后的表面张力及其分量。结果未改性玉米秸秆粉的表面张力为28.88 mN/ m,极性分量为22.20 mN/ m；而改性玉米秸秆粉的表面张力为35.69 mN/ m,极性分量为3.51 mN/m。结论在与热塑性塑料复合时,改性玉米秸秆粉有更好的界面相容性,其制备的木塑复合材料有更好的力学强度。
목적：개선목질섬유여열소성소료적계면상용성,제고목소복합재료적역학성능。방법채용모세관상승법측정불동탐측액재미개성옥미갈간분화규완우련제개성옥미갈간분표면적접촉각,통과Owens 법계산옥미갈간분개성전후적표면장력급기분량。결과미개성옥미갈간분적표면장력위28.88 mN/ m,겁성분량위22.20 mN/ m；이개성옥미갈간분적표면장력위35.69 mN/ m,겁성분량위3.51 mN/m。결론재여열소성소료복합시,개성옥미갈간분유경호적계면상용성,기제비적목소복합재료유경호적역학강도。
Objective To improve the interfacial compatibility of lignocellulose with thermoplastic plastics, and increase the me-chanical properties of wood-plastic composites. Methods The contact angles of three probe liquids against unmodified and modified corn stover fibers were tested by capillary rise method, and the surface tension and its components of unmodified and modified corn stover fibers were calculated based on the method of Owens-wendt-Kaelble. Results The results showed that the surface tension of the unmodified corn stover fibers was 28. 88 mN/ m and its polar component was 22. 20 mN/ m, while the surface tension of the modified corn stover fibers was 35. 69 mN/ m and its polar component was 3. 51 mN/ m. Conclusion Modified corn stover fibers had better in-terfacial compatibility with thermoplastics, which was also confirmed by the better mechanical properties of wood-plastic composites.