个人信息Personal Information
教授
博士生导师
硕士生导师
主要任职:化学学院院长、党委副书记
性别:男
毕业院校:北京市清华大学
学位:博士
所在单位:化学学院
学科:无机化学. 物理化学. 化学工程
电子邮箱:taosy@dlut.edu.cn
3D-printing of materials with anisotropic heat distribution using conductive polylactic acid composites
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论文类型:期刊论文
发表时间:2017-07-15
发表刊物:MATERIALS & DESIGN
收录刊物:SCIE、EI、Scopus
卷号:126
页面范围:135-140
ISSN号:0264-1275
关键字:3D printing; Composites; Anisotropic; Resistance
摘要:A series of plastic items with anisotropic heat and resistance distribution were prepared by 3D printing. Conductive graphene doped polylactic acid (G-PLA) and pure PLA were used as raw materials. The programmed mixing printing method was adopted to construct these objects. The effects of the extrusion ratios of G-PLA and PLA, applied voltage and heat distribution on the printed items were investigated. We observed that the resistance of the printed items was controlled by the extrusion ratio during the 3D printing process. The distribution of the resistance is programmed by the slicing software and the single chip microcomputer in the 3D printer. The temperature of the printed test sheet varied from 20 to 90 degrees C according to the applied electronic current and voltage. Heterogeneous temperature regions were identified and showed isotropy. The temperature gradient field was constructed by designing and printing items with a quasi-continuously change resistance. The thermal signal was presented in the form of color information through a thermography device. As such, a simple message can be expressed and stored in this printed objects.