R Mohan Kumar H, Benal Maha Gundappa M, G S Pradeep Kumar, Tambrallimath Vijay, H R Geetha, Khan T M Yunus, Rajhi Ali A, Baig Maughal Ahmed Ali
Department of Mechanical Engineering, Government Engineering College, Kushalnagar 571234, India.
Department of Mechanical and Automobile Engineering, CHRIST (Deemed to Be University), Bangalore 560029, India.
Polymers (Basel). 2022 Mar 16;14(6):1182. doi: 10.3390/polym14061182.
One of the most promising and widely used additive manufacturing technologies, fused deposition modelling (FDM), is based on material extrusion and is most commonly used for producing thermoplastic parts for functional applications with the objectives of low cost, minimal waste and ease of material conversion. Considering that pure thermoplastic materials have a significantly poor mechanical performance, it is necessary to enhance the mechanical properties of thermoplastic parts generated using FDM technology. One of the conceivable techniques is to incorporate reinforcing materials such as short glass fibre (SGF) into the thermoplastic matrix in order to produce a polymer composite that can be used in engineering applications, such as structural applications. The morphological and mechanical properties of SGF (short glass fibre) reinforced ABS- (Acrylonitrile Butadiene Styrene) based polymer composites created via the method of FDM (fused deposition modelling) were investigated in this work. Properties were evaluated at three different weight percentages (0, 15 and 30 wt%). The composite filaments were developed using the process of twin screw extrusion. The comparison was made between ABS + SGF (short glass fibre) composites and pure ABS of mechanical properties that include surface roughness, tensile strength and low-velocity impact. The tests were carried out to analyze the properties as per ASTM standards. It has been found that the impact strength and tensile strength show an improvement in glass fibre inclusion; moreover, alongside the direction of build, the surface roughness had been reduced. The studies also focused on studying the dispersion characters of SGF in ABS matrix and its impact on the properties. Strength and modulus of SGF reinforced ABS composite has been significantly improved along with reduction of ductility. A 57% increase in tensile strength has been noted for 30 wt% addition of SGF to ABS in comparison to pure ABS. It was also interesting to note the reduction in surface roughness with every incremental addition of SGF to ABS. A 40% reduction in surface roughness has been observed with a 30 wt% addition of SGF to ABS in comparison to pure ABS.
熔融沉积建模（FDM）是最有前景且应用广泛的增材制造技术之一，它基于材料挤出，最常用于生产具有低成本、低浪费和易于材料转换等目标的功能性热塑性零件。鉴于纯热塑性材料的机械性能显著较差，有必要增强使用FDM技术生产的热塑性零件的机械性能。一种可行的技术是将短玻璃纤维（SGF）等增强材料加入热塑性基体中，以生产可用于工程应用（如结构应用）的聚合物复合材料。本研究通过FDM（熔融沉积建模）方法制备了SGF（短玻璃纤维）增强的基于ABS（丙烯腈-丁二烯-苯乙烯）的聚合物复合材料，并对其形态和力学性能进行了研究。在三种不同重量百分比（0、15和30 wt%）下对性能进行了评估。复合长丝采用双螺杆挤出工艺制备。对ABS + SGF（短玻璃纤维）复合材料和纯ABS的机械性能进行了比较，包括表面粗糙度、拉伸强度和低速冲击性能。根据ASTM标准进行测试以分析性能。研究发现，加入玻璃纤维后冲击强度和拉伸强度有所提高；此外，沿成型方向表面粗糙度降低。研究还聚焦于研究SGF在ABS基体中的分散特性及其对性能的影响。SGF增强ABS复合材料的强度和模量显著提高，同时延展性降低。与纯ABS相比，向ABS中添加30 wt%的SGF时，拉伸强度提高了57%。同样值得注意的是，随着向ABS中逐渐添加SGF，表面粗糙度降低。与纯ABS相比，向ABS中添加30 wt%的SGF时，表面粗糙度降低了40%。
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