School of Art and Design, Taizhou University, Taizhou, 318000, People's Republic of China.
Faculty of Creative Technology and Heritage, University Malaysia Kelantan, 16100, Kelantan, Malaysia.
Sci Rep. 2022 Aug 17;12(1):14007. doi: 10.1038/s41598-022-17777-w.
Wood fiber/polypropylene (WF/PP) composites are environmentally friendly materials with high dimensional stability and mechanical properties. However, the applications of WF/PP composites are limited by an unattractive surface texture. In this study, the WF/PP composites were decorated with poplar wood veneer using chlorinated polypropylene (CPP) as a hot melt adhesive, the bonding strength is over 1.18 MPa. Surface bonding strength tests and scanning electron microscopy (SEM) were performed to analyze the quality of the CPP bonding layer. The physical and mechanical properties of the veneered WF/PP boards and unveneered controls were examined to determine the effects of reinforcement. The result shows that after veneered the tension strength and modulus of the whole composite board were increased over 30% and 10%; the flexural strength and modulus were increased over 10% and 20%. Low-velocity impact testing was performed to determine the impact resistance properties of the composites. Higher ratios of wood fiber in the WF/PP composite led to a higher surface bonding strength, which was evident in the SEM images. Wood veneer decoration increased the mechanical strength of the whole composite board. A tighter bond along the CPP layer would provide additional reinforcement of the veneered composite's mechanical properties.
木纤维/聚丙烯（WF/PP）复合材料是一种环保材料，具有尺寸稳定性和机械性能高的特点。然而，由于其表面纹理不美观，WF/PP 复合材料的应用受到限制。本研究采用氯化聚丙烯（CPP）作为热熔胶，对 WF/PP 复合材料进行杨木单板贴面装饰，其胶合强度超过 1.18 MPa。通过表面胶合强度测试和扫描电子显微镜（SEM）分析 CPP 胶合层的质量。测试贴面 WF/PP 板和未贴面对照板的物理力学性能，以确定增强效果。结果表明，贴面后，整个复合板的拉伸强度和模量提高了 30%以上和 10%以上；弯曲强度和模量提高了 10%以上和 20%以上。进行了低速冲击试验，以确定复合材料的抗冲击性能。WF/PP 复合材料中木纤维的比例越高，表面胶合强度越高，SEM 图像也证实了这一点。单板贴面装饰提高了整个复合板的机械强度。CPP 层的紧密结合将为贴面复合材料的机械性能提供额外的增强。
