制备了聚丙烯(PP)基木塑复合材料(WPC),研究了马来酸酐(MAH)、木粉用量以及木粉粒径对WPC性能的影响,并考察了浸泡及擦干放置后WPC的性能变化和恢复情况。结果表明:随着增容剂MAH用量的增加,WPC的拉伸强度和冲击强度均先增大后减小,吸水率则呈下降趋势;当浸水1天后,WPC浸水试样的拉伸强度下降,冲击强度则有所提升,并且随着MAH用量的增加,材料拉伸强度的下降趋于显著,冲击强度的提升幅度则逐渐减小;当MAH用量超过8份后,干燥后的WPC浸水试样(擦干放置1天),力学性能基本恢复。随着木粉用量的增加,WPC的拉伸强度先增大后减小,冲击强度不断减小,而吸水率则有所增大,其中当木粉含量超过10份时,干燥后的WPC浸水试样,其拉伸强度仅能得到部分恢复。另外随着木粉粒径的减小,WPC的吸水率明显增大,冲击强度有所提高;而木粉粒径对干燥后WPC浸水试样的拉伸强度恢复情况影响不大,其中当木粉粒度为60目时,试样的冲击强度比浸水前有所提升。 Polypropylene (WPC) based wood-plastic composites (WPC) were prepared. The effects of maleic anhydride (MAH), wood flour content and wood flour particle size on the properties of WPC were investigated. The effects of WPC Performance changes and recovery. The results showed that the tensile strength and impact strength of WPC increased first and then decreased with the increase of the amount of MAH, while the water absorption decreased. When WPC immersed for 1 day, the tensile strength of WPC decreased , While the impact strength is improved. With the increase of MAH content, the tensile strength of the material tends to decrease significantly, while the impact strength increases gradually. When the MAH content exceeds 8, the WPC immersion test Like (dry place 1 day), mechanical properties of the basic recovery. With the increase of the amount of wood flour, the tensile strength of WPC first increases and then decreases, the impact strength decreases while the water absorption increases. When the content of wood flour exceeds 10 parts, WPC water immersion The tensile strength of the sample can only be partially recovered. In addition, with the decrease of particle size of wood flour, WPC water absorption increased obviously and impact strength increased. However, the particle size of wood flour had little effect on the recovery of tensile strength of WPC sample after drying, The particle size of 60 mesh, the impact strength of the sample than before water has been enhanced.