在聚氯乙烯(PVC)基木塑复合材料中添加功能性材料硅藻土,通过熔融共混挤出制备了功能性木塑复合材料,研究了硅藻土用量对复合材料力学性能和甲醛吸附能力的影响。结果表明:当硅藻土用量为5份时,复合材料的力学性能均有所提高,进一步增加硅藻土用量则其力学性能呈现下降趋势;硅藻土可提高复合材料的甲醛吸附能力,当硅藻土用量为25份时,吸附12 h后复合材料甲醛吸附量比未添加硅藻土时提高了88.4%,而且复合材料的甲醛吸附量随着硅藻土用量的增加而增大。 In the PVC-based wood-plastic composites, diatomite was added as a functional material, and the functional wood-plastic composites were prepared by melt blending. The effects of the amount of diatomite on the mechanical properties and formaldehyde adsorption The impact of ability. The results show that the mechanical properties of composites increase when the amount of diatomite is 5 parts, while the mechanical properties of composites decrease when the amount of diatomite is increased. Diatomite can improve the formaldehyde adsorption capacity of composites. When the amount of diatomite was 25, the adsorption of formaldehyde on the composite increased by 88.4% after 12 h adsorption, and the formaldehyde adsorption of the composite increased with the increase of diatomite content.