对杨木复合化学镀Cu–纳米Fe3O4,以获得具有优良磁性能的木材基复合材料.采用响应面法优化了制备工艺,发现镀液纳米 Fe3O4质量浓度对复合材料磁性能的影响最显著,建立了复合材料的饱和磁化强度(Ms)与纳米 Fe3O4质量浓度、超声功率和时间之间的回归方程.在较优工艺条件(纳米Fe3O4质量浓度2.5 g/L,超声功率800 W,超声时间70 min)下制备的木材/Cu–纳米Fe3O4复合材料表面均匀、致密,具备超顺磁性,Ms约为3.09 emu/g.验证试验结果与回归方程的预测值吻合,证明了响应面优化法适用于木材/Cu–纳米Fe3O4复合材料磁学性能的预测与优化.%The electroless plating of Cu–nano-Fe3O4 composite was conducted on poplar substrate to prepare a wood-based composite with excellent magnetic properties. The preparation conditions were optimized by response surface methodology. It was found that the mass concentration of nano-Fe3O4 in bath had the most significant impact on the magnetic properties of composites. A regression equation between saturation magnetization (Ms) of the composite and nano-Fe3O4 mass concentration in bath, ultrasonic power, and ultrasonic dispersion time was established. The wood/Cu–nano-Fe3O4 composite obtained under the optimized conditions (i.e. nano-Fe3O4 2.5 g/L, ultrasonic power 800 W, and ultrasonic dispersion time 70 min) had a uniform and compact surface with superparamagnetism and a saturation magnetization of 3.09 emu/g. The verification test results were in good agreement with the results predicted from the regression equation, proving that the response surface methodology is suitable for predicting and optimizing the magnetic properties of wood/Cu–nano-Fe3O4 composite.
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