Novel plasma treatment for preparation of laser sintered nanocomposite parts
Novel plasma treatment for preparation of laser sintered nanocomposite parts
复制标题
用于制备激光烧结纳米复合材料零件的新型等离子体处理
DOI：
10.1016/j.addma.2018.11.016
复制
发表时间：
2019
影响因子：
11
通讯作者：
Almansoori A
中科院分区：
文献类型：
--
作者：
Almansoori A
聚合物激光烧结（LS）是一种众所周知的增材制造工艺，能够在很少或没有成本损失的情况下生产高度复杂的几何形状。然而，目前可用于该工艺的材料范围有限，限制了其应用。虽然在标准LS聚合物中加入填料（如纳米粘土）来修饰其性能是很常见的，但实现有效的分散是很困难的。本文研究了等离子体处理作为一种增强分散的方法，以期提高激光烧结纳米复合材料部件的一致性和表面质量。为了制备用于LS的聚酰胺12纳米复合粉体，采用低压空气等离子体处理对Cloisite 30B （C30B）和Nanomer I.34TCN （I.34TCN）两种纳米粘土进行了等离子体表面改性。等离子体处理大大降低了纳米粘土（C30B和I.34TCN）颗粒的聚集，粉末的分解温度高于未经等离子体处理的粉末。用纯聚酰胺12、未经处理的I.34TCN和等离子体处理的I.34TCN复合材料成功地生产出了不同复杂形状的LS零件。观察到分散良好的等离子体处理的纳米粘土的存在，并发现这对于改善LS制造的表面质量是必不可少的，而这只有在等离子体处理的I.34TCN中才能实现。同样，掺入经过处理的I.34TCN后，某些力学性能也比PA12有所提高。例如，等离子体处理的复合材料的弹性模量高于聚酰胺12和未经处理的复合材料。在最终应变的情况下，等离子体处理的复合材料比未处理的表现更好，结果在样品之间的差异减少。这说明了在纳米粘土上使用等离子体处理来改善LS部件性能的可行性，尽管需要进一步的研究来充分挖掘其潜力。
Polymer Laser Sintering (LS) is a well-known Additive Manufacturing process, capable of producing highly complex geometries with little or no cost penalty. However, the restricted range of materials currently available for this process has limited its applications. Whilst it is common to modify the properties of standard LS polymers with the inclusion of fillers e.g. nanoclays, achieving effective dispersions can be difficult. The work presented here investigates the use of plasma treatment as a method of enhancing dispersion with an expectation of improving consistency and surface quality of laser sintered nanocomposite parts. To enable the preparation of polyamide 12 nanocomposite powder for applications in LS, plasma surface modification using Low Pressure Air Plasma Treatment was carried out on two nanoclays: Cloisite 30B (C30B) and Nanomer I.34TCN (I.34TCN). Plasma treatment strongly reduced the aggregation of the nanoclay (C30B and I.34TCN) particles, and powders displayed higher decomposition temperatures than those without plasma treatment. LS parts from neat polyamide 12, untreated I.34TCN and plasma treated I.34TCN composites were successfully produced with different complex shapes. The presence of well dispersed plasma treated nanoclays was observed and found to be essential for an improved surface quality of LS fabricated which was achieved only for plasma treated I.34TCN. Likewise, some mechanical properties could be improved above that of PA12 by incorporation of treated I.34TCN. For example, the elastic modulus of plasma treated composites was higher than that of polyamide 12 and the untreated composite. In the case of the ultimate strain, the plasma treated composite performed better than untreated and results had a reduced variation between samples. This illustrates the feasibility of the use of plasma treatments on nanoclays to improve the properties of LS parts, even though further studies will be required to exploit the full potential.
登录
查看更多内容
影响因子：
3.5
作者：
Alaa Almansoori;R. Masters;K. Abrams;J. Schäfer;T. Gerling;C. Majewski;C. Rodenburg
通讯作者：
Alaa Almansoori;R. Masters;K. Abrams;J. Schäfer;T. Gerling;C. Majewski;C. Rodenburg
粘土（合成锂皂石）颗粒的二氧化硫等离子体处理
影响因子：
3.6
作者：
K. Fatyeyeva;F. Poncin‐Epaillard
通讯作者：
F. Poncin‐Epaillard
乌德赫语文本（A）
DOI：
--
发表时间：
2004
期刊：
影响因子：
--
作者：
桑野 隆;高橋 順一;原 克;高橋 順一;風間 伸次郎
通讯作者：
風間 伸次郎
等离子处理膨润土填充的再生热塑性聚氨酯的性能
影响因子：
3.5
作者：
Vitalija Skrockienė;K. Žukienė;S. Tučkutė
通讯作者：
S. Tučkutė
聚醚嵌段酰胺共聚物/粘土纳米复合材料的制备及表征
影响因子：
3.2
作者：
I. Yang;P. Tsai
通讯作者：
P. Tsai