Abstract This paper was focused on application of the perlite mineral as the filler for polymer nanocomposites in technical applications. A strong effect of the perlite nano-filler on high-density poly(ethylene) (HDPE) composites’ mechanical and thermal properties was found. Also found was an increase of the Young’s modulus of elasticity with the increasing filler concentration. Increased stiffness from the mechanical tensile testing was confirmed by the nondestructive vibrator testing as well. This was based on displacement transmissibility measurements by means of forced oscillation single-degree-of freedom method. Fracture toughness showed a decreasing trend with increasing perlite concentration, suggesting occurrence of the brittle fracture. Furthermore, ductile fracture processes were observed as well at higher filler concentrations by means of SEM analysis. There was also found relatively strong bonding between polymer chains and the filler particles by SEM imagining.

中文翻译：

---

高密度聚乙烯/珍珠岩纳米复合材料的材料工程性能研究

摘要 本文重点研究珍珠岩矿物作为聚合物纳米复合材料填料在技术应用中的应用。发现珍珠岩纳米填料对高密度聚乙烯 (HDPE) 复合材料的机械和热性能有很强的影响。还发现杨氏弹性模量随着填料浓度的增加而增加。非破坏性振动器测试也证实了机械拉伸测试增加的刚度。这是基于通过强迫振荡单自由度方法的位移传递率测量。随着珍珠岩浓度的增加，断裂韧性呈下降趋势，表明发生了脆性断裂。此外，通过 SEM 分析，在较高的填料浓度下也观察到了韧性断裂过程。通过扫描电镜成像还发现聚合物链与填料颗粒之间的结合力较强。