Selective laser sintering (SLS) to prepare composites by adding filler into the polymer effectively saves costs and reinforces the sintered parts. This article investigated the fabrication of PA2200 composites filled with different volume fractions of Hollow glass powder (HGM) by SLS. HGM was prepared by silane coupling agent surface treatment. The particle size distribution, microstructure, and thermal and mechanical properties of PA2200/HGM composites were studied by scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and tensile experiment. The results indicated that the density of the composite was significantly reduced compared to the neat PA2200, and the density decreased with the HGMs content increasing. HGM improved the warping deformation in the process of sintering. The tensile modulus increased while tensile strength and elongation at break decreased as a function of the HGM volume fraction in a certain range. This work indicated that the thermal and tensile properties of polyamide-matrix composites could be reinforced by adjusting HGM content, and PA2200/HGM composite powder is a good material for SLS with less density and lower cost. Selective laser sintering (SLS) is an additive manufacturing technique that uses a laser beam to locally melt polymer powder to build products layer by layer.
SLS has been widely used for its unique advantages in diversifying the SLS material, saving material, sintering without support, high-intensity parts, and manufacturing rapid metal parts. Due to their excellent mechanical properties, polyamides are one of the most important engineering thermoplastics in electronic, automobile, packaging, textiles, and consumer applications. During the past years, laser sintering of polyamide (PA) has developed and grown into a viable prototyping tool and production method for small series production of high-strength functional polymer parts. Currently, the common polyamide powder materials in the market mainly include PA6, PA11, PA12, etc. PA2200 is a special multipurpose material based on polyamide PA12 that was developed for Eosint-p series rapid prototyping equipment by EOS GmbH. Its typical application is the functional prototype after high-precision machining and polishing at a high cost. If you are looking for high quality, high purity, and cost-effective Hollow glass powder, or if you require the latest price of Hollow glass powder, please feel free to email contact mis-asia.
