3D打印技术在固体废弃物资源循环中的应用

打印材料是限制3D打印技术发展和推广应用的瓶颈问题，目前已经发现部分固体废弃物与3D打印的契合度很高，可以用于制备3D打印材料.本文综述了4类可以用于3D打印的固体废弃物，包括硅铝基废弃物、农林废弃物、废旧塑料和废旧金属，着重讨论了这4类废弃物制备3D打印材料的方法以及废弃物的添加对原打印材料造成的影响，同时分析了当前废弃物制备3D打印材料需要解决的问题，并对废弃物基3D打印材料的发展趋势进行了展望.

Application of 3D printing technology in the resource recycling of solid wastes

Printing material is the bottleneck problem limiting the development and industrial application of 3D printing technology. Thus far, it had been found that some solid wastes had high compatibility with 3D printing, which could be used to prepare 3D printing material. This paper reviewed four types of solid wastes which could be applied in 3D printing, including Si-Al based waste, agricultural and forestry waste, plastic waste and scrap metals. The methods of preparing 3D printing materials from these four types of wastes and the influence of wastes additions on the original printing materials were discussed emphatically. Meanwhile, the problems needed to be solved in the preparation of 3D printing materials from wastes were analyzed, and the development prospects of waste-based 3D printing materials was also articulated.