This paper presents a study about polypropylene-pine wood composites, both as filaments and products, coated with aluminum (Al) or copper (Cu), obtained through flame thermal spray process after subjecting the composites to thermal treatments in the second and third step of the study. Results revealed that a previous aluminum layer was needed in order to obtain copper coatings on the composites. The physical and mechanical properties of both metal coated composite filaments were also evaluated and compared with the uncoated composite filaments with and without heat treating these. Consequently, it was observed that the nature of the coating adhesion on the substrates was mechanical, and therefore abrasion blasting of filaments or the use of a higher wood fiber content in the composite improved the Al or Cu adhesion. Also, it was observed that extruded wood fiber/PP filaments should not be cooled in water because pieces might be molded directly once the moisture affects the metal coatings adhesion onto the substrates.

本文介绍了聚丙烯-松木复合材料，作为长丝和产品，涂有铝 (Al) 或铜 (Cu)，在复合材料在第二和第三步中进行热处理后，通过火焰热喷涂工艺获得。研究。结果表明，需要先前的铝层才能在复合材料上获得铜涂层。还评估了两种金属涂层复合长丝的物理和机械性能，并与经过和未对其进行热处理的未涂层复合长丝进行了比较。因此，观察到涂层粘附在基材上的性质是机械的，因此长丝的磨损喷砂或在复合材料中使用更高的木纤维含量提高了铝或铜的粘附力。还，