Wood‐plastic composites (WPCs) manufactured from tomentose wood flour and polypropylene (PP) was studied in this article. The interfacial compatibility before and after the addition of the coupling agent was evaluated by dynamic thermodynamic analysis, Fourier transforms infrared (FT‐IR), and differential scanning calorimetry (DSC). The effects of the coupling agent on the interfacial compatibility of WPCs were studied. The results indicated that the bending properties of the composite material after adding the coupling agent are greater than that without the coupling agent. And WPCs have the best performance when the coupling agent is added at 2%. The storage modulus E' of the composite material decreases with the increase in temperature and increases with the increase of frequency. At high frequencies, the composite has higher structural stability. After the coupling agent is added, the storage modulus E' significantly improved, and the interface bonding strength has increased accordingly. After the coupling agent is added, the apparent activation energy and the glass transition temperature of the composite material increase during the relaxation process.

中文翻译：

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动态热力学分析评估木粉/聚丙烯复合材料的界面相容性

本文研究了由绒毛木粉和聚丙烯（PP）制成的木塑复合材料（WPC）。通过动态热力学分析，傅立叶红外光谱（FT-IR）和差示扫描量热法（DSC）评估了偶联剂添加前后的界面相容性。研究了偶联剂对木塑复合材料界面相容性的影响。结果表明，加入偶联剂后复合材料的弯曲性能要比不加入偶联剂时大。当偶联剂的添加量为2％时，WPC的性能最佳。储能模量E复合材料的′′随温度的升高而降低，并随频率的升高而升高。在高频下，复合材料具有更高的结构稳定性。添加偶联剂后，储能模量E '显着提高，界面结合强度相应提高。加入偶联剂后，复合材料的表观活化能和玻璃化转变温度在松弛过程中增加。