A Study of PLA/Carbon Fiber Composite for Fused Deposition Modeling Process

• Main Authors: Che-Wei Chiang, 姜?崴
• Other Authors: Chao-Yu Lee
• Format: Others
• Language: zh-TW
• Published: 2017
• Online Access: http://ndltd.ncl.edu.tw/handle/htrv49

碩士 === 國立虎尾科技大學 === 材料科學與工程系材料科學與綠色能源工程碩士班 === 105 === 3D printing technology has been widely used in recent years, it is regarded as one of the advanced technology in industry. The Fused Deposition Modeling technique used in this study is the most common method of 3D printing technology. The 3D printer is self-assembled unlike other general products. The experiment equipment added an extra motor to make the heatbed vibration. The filament selected is polylactic acid and carbon fiber composite material - carbon fiber polylactic acid. Print the specimen to conform to the tensile test specification. And for the nozzle operating temperature, heatbed heating temperature and whether the heatbed vibration to compare. The nozzle operating temperatures were 190℃, 200℃ and 210℃ respectively, heat bed heating temperature at room temperature, 40℃ and 55℃. In different parameters, the mechanical strength of the specimen was measured and analyzed by using tensile test. The research observed the tensile structure of the microstructure, and then analyzed the crystal structure. The experimental results show that the crystalline phase does not change with the nozzle temperature and heatbed temperature change. In the experiment to change the vibration of the heatbed, the ductility increased from 3% to 4% in the specimen with vibrations applied. Tensile strength also increases, indicating that the stress on the specimen is increased. From the stress-strain curve, it can be seen that the strain of the specimen with vibration is larger than that of the specimen without vibration. In the experiment to change the nozzle temperature and the temperature of the heatbed, it was found that under the observation of the microstructure, when the nozzle operating temperature was 210℃, the stacking of the layer and the layer was more uniform and dense than the nozzle at low temperature without vibration.