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首页> 外文期刊>Wear: an International Journal on the Science and Technology of Friction, Lubrication and Wear >Tribological studies of polyamide 6 and high-density polyethylene blends filled with PTFE and copper oxide and reinforced with short glass fibers
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Tribological studies of polyamide 6 and high-density polyethylene blends filled with PTFE and copper oxide and reinforced with short glass fibers

机译：聚酰胺6和填充有PTFE和氧化铜并用短玻璃纤维增​​强的高密度聚乙烯混合物的摩擦学研究

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摘要

The mechanical and tribological behaviors of polyamide 6 (PA6) and high density polyethylene (HDPE) polyblends made using maleic anhyride polypropylene as the compatibilizing agent were studied. The compositions investigated for tribological behavior were 80 wt.% PA6-20 wt.% HDPE and 60 wt.% PA6-40 wt.% HDPE. The polyblends were reinforced with glass fiber (GF) and filled with polytetrafluoroethylene (PTFE) and copper oxide (CuO). The polymeric materials were blended using a modular intermeshing co-rotating twin-screw extruder. The reinforced composite specimens with different fiber proportions were made in a reciprocating screw injection molding machine using the blended materials as the feed stock. The friction and wear experiments were run under ambient conditions in a pin-on-disk machine with the polymer pin riding on the flat surface of a steel disk at a sliding speed of 1 ms{sup}(-1) and under a nominal pressure of 0.64 MPa. The tensile strength of the polyblend with composition 80 wt.% PA6-20wt.% HDPE increased with fiber reinforcement but the material became brittle. The maximum reductions in wear and the coefficient of friction were obtained by filling the polyblends with 10 wt.% PTFE. The fiber glass reinforcement was not found effective in lowering the already low wear rate of the polyblend.
机译：研究了以马来酸酐聚丙烯为增容剂的聚酰胺6（PA6）和高密度聚乙烯（HDPE）共混物的力学和摩擦学行为。为摩擦学性能而研究的组合物是80重量％的PA6-20重量％的HDPE和60重量％的PA6-40重量％的HDPE。用玻璃纤维（GF）增强多掺混物，并用聚四氟乙烯（PTFE）和氧化铜（CuO）填充。使用模块化互相啮合的同向双螺杆挤出机共混聚合物材料。使用混合材料作为原料，在往复式螺杆注塑机中制备具有不同纤维比例的增强复合材料样品。摩擦和磨损实验是在环境条件下在销盘式计算机上进行的，聚合物销以1 ms {sup}（-1）的滑动速度并在公称压力下骑在钢盘的平面上0.64MPa。组成为80wt。％PA6-20wt。％HDPE的混合纤维的拉伸强度随纤维增强而增加，但材料变脆。通过用10 wt。％PTFE填充多掺混物，可以最大程度地减少磨损和降低摩擦系数。未发现玻璃纤维增​​强材料可有效地降低本来就低的共混物的磨损率。

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