毛竹热解油改性光敏树脂光固化3D打印优化研究
Optimizing Photocuring 3D Printing of Moso Bamboo Pyrolytic Oil Modified Photosensitive Resin
朱琳 1李永霞 1任学勇 1林涛2
作者信息
- 1. 北京林业大学材料科学与技术学院;国家林业草原木质材料循环利用工程技术研究中心,北京 100083
- 2. 清华大学材料学院,北京 100084
- 折叠
摘要
光敏树脂是光固化3D打印的重要原材料,但是目前大多来源于不可再生的石化资源且成本较高,亟待开发绿色低成本的光敏树脂新材料并优化其3D打印工艺.本研究以毛竹(Phyllostachys edulis)热解油为原料来合成生物油改性聚氨酯丙烯酸酯(bio-oil polyurethane acrylate,BPUA)光敏树脂,优化分析得到BPUA树脂光固化3D打印参数为:曝光时间5 s、切片层厚0.05 mm、底层数7层,经紫外光处理后拉伸强度达到21.94 MPa,断裂伸长率17.55%,硬度76.6 HD;采用优化参数成功打印多个平面和三维结构模型,微观形貌和化学结构分析表明打印试件具有较高的尺寸精度和良好的表面质量.
Abstract
Photosensitive resin is an important raw material for photocuring 3D printing,which most of them are derived from high-cost non-renewable petrochemical resources.Therefore,there is an urgent need to develop novel green and low-cost photosensitive resin materials and optimize their 3D printing process.In this study,moso bamboo(Phyllostachys edulis)pyrolytic oil was used as the raw material to synthesize bio-oil polyurethane acrylate(BPUA)photosensitive resin.The parameters of the BPUA resin for photocuring 3D printing were optimized as following:the exposure time of 5 seconds,the thickness of the sliced layer of 0.05 mm,and the number of the bottom layer of seven.Under this condition,good mechanical properties were achieved with a tensile strength of 21.94 MPa,a fracture strength of 17.55%,and a hardness of 76.6 HD.Several planar and three-dimensional structural models were successfully printed with the optimized process parameters showing high dimensional accuracy and good surface quality as indicated by the microscopic and chemical analyses.
关键词
光固化3D打印/毛竹热解油/光敏树脂/聚氨酯丙烯酸酯/工艺参数Key words
photocuring 3D printing/moso bamboo pyrolytic oil/photosensitive resin/polyurethane acrylate/process parameters引用本文复制引用
基金项目
"十四五"国家重点研发计划项目课题(2022YFD2200904)
中央财政林业科技推广项目(冀TG[2022]004)
出版年
2024
国家科技期刊平台
NSTL
万方数据