Tensile results of Hollow glass powder


The evolution of the tensile strength, the tensile modulus, and the elongation at the break of the three samples. Firstly, it is necessary to say that the results of the tensile test following those reported by other authors for the neat PA2200 [16,18]. Secondly, the tensile modulus of PH-1 and PH-2 is much higher than that of neat PA2200. As Fig. 3 shows, the neat PA2200 has the highest tensile strength and the best ductility, which are 47.63MPa and 17.56%, respectively. Overall, although the tensile strength and elongation at break of PH-1 and PH-2 are slightly lower than those of neat PA2200, tensile modulus increases by the increasing content of HGM addition and reaches to 2935.16MPa of PH-2. Concerning the effect on the reinforcement of HGM, it is conducive to the elastic properties with an increase in the tensile modulus.

Nevertheless, other properties, such as the tensile strength and the elongation at break, are negatively affected, especially at 30% of HGM addition. Although the average tensile strength of the PH-1 sample was lower than that of the neat PA2200 sample, the maximum value was higher. The observed unexpected differences are related to the treatment of HGM by silane coupling agent, where the adhesion between the filler and the PA 2200 matrix plays a critical role. The SEM analysis performed on the fracture surfaces of PH-1 and PH-2 is displayed in Fig. 4. It can be seen that HGMs are homogeneously mixed in the polyamide matrix. In contrast, some HGMs are no longer spherical because of melting deformation. The fracture surfaces are generally quite plain, which indicates PA2200 matrix and HGM have a good interaction. Due to the fracture behavior being controlled by microstructural defects, the reduction in tensile strength and elongation values of PH-1 and PH-2 could be caused by small voids (porosities) in the structure[16]. No significant reinforcement strengthening effect has been detected, depending on the further improvement of the adhesion between the Hollow glass powder and the matrix. 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.

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