Won Jong Sung, Park Jeong Jin, Kang Eun Hye, Jeon Min Hong, Kwon Miyeon, Lee Seung Goo
Defense Materials & Energy Technology Center, Agency for Defense Development, Daejeon 34060, Republic of Korea.
Department of Organic Materials Engineering, Chungnam National University, Daejeon 34134, Republic of Korea.
Materials (Basel). 2023 Aug 29;16(17):5899. doi: 10.3390/ma16175899.
In this study, surface modification aimed to enhance the compatibility between a hydrophilic inorganic filler and polypropylene (PP) matrix using hydrophobic treatment. Lauric acid, butyl acrylate, and maleic anhydride were employed to modify the filler surface. After treatment, inorganic filler/PP composites were produced using melt-mixing and extrusion-injection molding processes. The study focused on investigating compatibility and migration behavior between the filler and matrix. The findings indicated that hydrophobic modification, specifically with butyl acrylate and maleic anhydride, improved migration issues in nano-whisker, while maintaining favorable mechanical properties even under accelerated thermal aging. However, excessive hydrophobicity induced by superhydrophobic treatment using lauric acid led to reduced compatibility with the matrix, compromising its effectiveness. Consequently, the study revealed the potential of surface modification to enhance interfacial properties and mitigate migration concerns in PP composites for automotive applications.
在本研究中，表面改性旨在通过疏水处理提高亲水性无机填料与聚丙烯（PP）基体之间的相容性。使用月桂酸、丙烯酸丁酯和马来酸酐对填料表面进行改性。处理后，采用熔融共混和挤出注塑工艺制备了无机填料/PP复合材料。该研究重点调查填料与基体之间的相容性和迁移行为。研究结果表明，疏水改性，特别是用丙烯酸丁酯和马来酸酐进行改性，改善了纳米晶须中的迁移问题，同时即使在加速热老化条件下仍保持良好的机械性能。然而，用月桂酸进行超疏水处理导致的过度疏水性会降低与基体的相容性，从而影响其有效性。因此，该研究揭示了表面改性在增强界面性能和减轻汽车应用中PP复合材料迁移问题方面的潜力。
