Impact of vapor polishing on surface quality and mechanical properties of extruded ABS
Impact of vapor polishing on surface quality and mechanical properties of extruded ABS
复制标题
蒸汽抛光对挤出ABS表面质量和机械性能的影响
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
N. Crane
中科院分区：
文献类型：
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作者：
Clayton Neff;Matthew Trapuzzano;N. Crane
目的
增材制造（AM）能够轻松生产复杂几何形状的模型和原型，并在创建功能部件方面取得进展。然而，AM工艺通常在机械性能、表面粗糙度和气密性方面不如传统制造方法。溶剂蒸汽处理（蒸汽抛光）通常用于改善热塑性塑料零件的表面质量，但结果很难表征。
设计/方法/方式
这项工作量化了表面粗糙度的变化，并评估了对密封性和机械性能的影响，为“印刷”和丙酮蒸气抛光ABS拉伸试样的1-，2-和4-mm的厚度由材料挤出（FDM）。
结果
经证明，蒸汽抛光可将表面粗糙度大于20 µm的特征的功率谱密度降低10倍，并根据全氟化碳总泄漏和压力泄漏测试显示出密封性的显著改善。然而，对机械性能的影响很小，薄样本显示断裂伸长率略有增加，但弹性模量降低。溶剂蒸发的双指数扩散衰减模型建议厚度独立和厚度依赖的时间常数，后者支持塑化对机械性能的影响。
独创性/价值
这项工作的贡献表明，气相抛光可以对ABS FDM组件的最终用途应用的性能产生重大影响。
Purpose
Additive manufacturing (AM) is readily capable of producing models and prototypes of complex geometry and is advancing in creating functional parts. However, AM processes typically underperform traditional manufacturing methods in mechanical properties, surface roughness and hermeticity. Solvent vapor treatments (vapor polishing) are commonly used to improve surface quality in thermoplastic parts, but the results are poorly characterized.
Design/methodology/approach
This work quantifies the surface roughness change and also evaluates the effect on hermeticity and mechanical property impacts for “as-printed” and acetone vapor-polished ABS tensile specimens of 1-, 2- and 4-mm thicknesses produced by material extrusion (FDM).
Findings
Vapor polishing proves to decrease the power spectral density for surface roughness features larger than 20 µm by a factor of 10× and shows significant improvement in hermeticity based on both perfluorocarbon gross leak and pressure leak tests. However, there is minimal impact on mechanical properties with the thin specimens showing a slight increase in elongation at break but decreased elastic modulus. A bi-exponential diffusion decay model for solvent evaporation suggest a thickness-independent and thickness-dependent time constant with the latter supporting a plasticizing effect on mechanical properties.
Originality/value
The contributions of this work show vapor polishing can have a substantial impact on the performance for end-use application of ABS FDM components.
3D打印的微流体。
DOI：
10.1002/anie.201504382
发表时间：
2016-03-14
期刊：
Angewandte Chemie (International ed. in English)
影响因子：
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作者：
Au AK;Huynh W;Horowitz LF;Folch A
通讯作者：
Folch A