Shao Dongwei, Xu Min, Cai Liping, Shi Sheldon Q
Key Laboratory of Bio-Based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China.
College of Mechanical Engineering, Jiamusi University, Jiamusi 154007, China.
Materials (Basel). 2016 Jun 14;9(6):469. doi: 10.3390/ma9060469.
Differing from the hot-pressing method in the manufacturing of traditional wood-rubber composites (WRCs), this study was aimed at fabricating WRCs using rubber processing to improve water resistance and mechanical properties. Three steps were used to make WRCs, namely, fiber-rubber mixing, tabletting, and the vulcanization molding process. Ninety-six WRC panels were made with wood fiber contents of 0%-50% at rotor rotational speeds of 15-45 rpm and filled coefficients of 0.55-0.75. Four regression equations, , the tensile strength (s), elongation at break (b), hardness (a) and rebound resilience (r) as functions of fiber contents, rotational speed and filled coefficient, were derived and a nonlinear programming model were developed to obtain the optimum composite properties. Although the s, b and r of the panels were reduced, a was considerably increased by 17%-58% because of the wood fiber addition. Scanning electron microscope images indicated that fibers were well embedded in rubber matrix. The 24 h water absorption was only 1%-3%, which was much lower than commercial wood-based composites.
与传统木塑复合材料（WRCs）制造中的热压法不同，本研究旨在通过橡胶加工来制造WRCs，以提高其耐水性和机械性能。制造WRCs采用了三个步骤，即纤维-橡胶混合、压片和硫化成型工艺。以0%-50%的木纤维含量、15-45转/分钟的转子转速和0.55-0.75的填充系数制作了九十六块WRC板材。推导了四个回归方程，即拉伸强度（s）、断裂伸长率（b）、硬度（a）和回弹性（r）作为纤维含量、转速和填充系数的函数，并建立了一个非线性规划模型以获得最佳复合材料性能。尽管板材的s、b和r有所降低，但由于添加了木纤维，a显著提高了17%-58%。扫描电子显微镜图像表明纤维很好地嵌入了橡胶基体中。24小时吸水率仅为1%-3%，远低于商用木质基复合材料。
