通过原位聚合法制备了硅藻土/不饱和聚酯(UP)复合材料。研究了硅藻土含量对该复合材料力学性能及摩擦磨损性能的影响,并利用扫描电镜(SEM)对磨损面进行观察。结果表明:当硅藻土含量为4%时,硅藻土/UP复合材料的储能模量提高了16.4%;硅藻土含量为3%时,硅藻土/UP复合材料的玻璃化转变温度提高了6℃,冲击强度提高了11.96%,总磨损量降低了17.5%;硅藻土含量为2%时,硅藻土/UP复合材料的弯曲强度提高了23.2%。 Diatomite / unsaturated polyester (UP) composites were prepared by in-situ polymerization. The effects of diatomite content on the mechanical properties and friction and wear properties of the composites were studied. The wear surface was observed by scanning electron microscopy (SEM). The results show that when the content of diatomite is 4%, the storage modulus of diatomite / UP composites increases by 16.4%, while the diatomite / UP composites have a glass transition of When the temperature is increased by 6 ℃, the impact strength increases by 11.96% and the total wear loss decreases by 17.5%. When the content of diatomite is 2%, the bending strength of diatomite / UP composites increases by 23.2%.