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对以铝酸酯为偶联剂对木粉进行表面改性处理后制备的木粉/聚丙烯复合材料的力学性能和形态学特征进行了研究。结果表明:铝酸酯偶联剂可以增加木塑复合材料的抗冲击强度,但会对复合材料的抗拉强度和抗弯强度造成负面的影响。对木塑复合材料的动态力学性能和微分扫描热量分析研究表明,以铝酸酯作为偶联剂,对木塑复合材料的储存模量和损失模量有少许增加,同时可降低材料的熔点和熔解热。利用扫描电镜观察木塑复合材料的木材与塑料界面发现,经铝酸酯处理过的木材与聚丙烯复合界面之间具有更好的相容性。这些研究结果表明,在木塑复合材料制造过程中利用廉价的铝酸酯作为木材化学改性剂,对改善复合材料的性质同样起作良好的作用。图6 表2 参16。
The mechanical properties and morphological characteristics of wood flour / polypropylene composites prepared by surface modification of wood flour with aluminate as coupling agent were studied. The results show that the aluminate coupling agent can increase the impact strength of WPC, but it will negatively affect the tensile strength and flexural strength of the composites. The dynamic mechanical properties of wood-plastic composites and differential scanning calorimetry studies show that the use of aluminate as a coupling agent on the wood-plastic composites storage modulus and loss modulus increased slightly, while reducing the melting point of the material and Melting heat. Using scanning electron microscopy to observe the wood-plastic composites at the wood-plastic interface, aluminate-treated wood has better compatibility with the polypropylene composite interface. These findings indicate that the use of inexpensive aluminates as wood chemical modifiers in the manufacture of WPC also plays a good role in improving the properties of the composites. Figure 6 Table 2 Reference 16.