摘要
分析了不同的填充强化剂(后处理A液)、不同的后处理B液基料、后处理B液中水性环氧乳液的掺量及后处理液浸泡时间对石膏基打印器件耐水性、抗压强度、尺寸偏差、表面微观结构的影响.结果表明:经纳米硅超硬固化剂处理后的打印器件抗压强度大幅提高,纳米硅超硬固化剂最适宜作为后处理A液;水性聚氨酯乳液PU-202B最适宜作为后处理B液的基料;后处理B液中加入水性环氧乳液,处理后打印器件的抗压强度增加、吸水率降低,但水性环氧乳液含量增加到一定程度后会出现尺寸偏差;后处理A、B液最佳浸泡时间分别为130 s和35 s;先浸泡后处理A液、后浸泡后处理B液的打印器件具有抗压强度高、吸水率小、表面较光滑、不脱粉等优良性能.
This paper deals with the water resistance,compressive strength,dimensional deviation and surficial microstructure of gypsum-based three-dimension printing specimens affected by filling enhancers（ namely infiltrant A）,base materials of infiltrant B,dosage of waterborne epoxy emulsion in infiltrant B and immersion time. The results show that（ 1） nano-silicone superhard curing agent is the most suitable enhancer for infiltrant A because it significantly improves the compressive strength of printing specimens;（ 2） waterborne polyurethane emulsion PU-202 B is the most appropriate base material of infiltrant B;（ 3） the addition of waterborne epoxy emulsion in infiltrant B improves the compressive strength and water resistance of printing specimens,but excess waterborne epoxy emulsion may result in a dimensional deviation of the specimens;（ 4） the best immersion time for the three-dimension printing specimens into infiltrants A and B is 130 s and 35 s,respectively; and（ 5） after being immersed in infiltrant A and subsequently in infiltrant B,the specimens are of high compressive strength,weak water absorption,smooth surface and strong bond capability.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2015年第2期144-150,共7页
Journal of South China University of Technology(Natural Science Edition)
基金
广东省教育部产学研结合项目(2012B091100442)~~
关键词
三维打印
打印器件
后处理液
抗压强度
吸水率
three-dimension printing
printing specimen
post-processing infiltrant
compressive strength
water absorption
