抗静电尼龙610复合材料的制备和研究

Preparation and Research on Antistatic PA610 Composite

分别选用导电炭黑、碳纳米管以及碳纤维作为抗静电剂,使用双螺杆熔融挤出制备抗静电尼龙610复合材料。对比发现,要达到抗静电效果,碳纳米管的加入最少5 wt%的加入量就能够达到抗静电效果;而导电炭黑和碳纤维都要加到15wt%才能达到抗静电要求。同时,碳纳米管的加入对材料力学性能的影响最小;导电炭黑对材料性能损失最大,需要进一步增韧才有使用价值;而碳纤维具有增强效果,但是会导致产品外观有浮纤现象。

Conductive carbon black,carbon nanotube and carbon fiber were chosen as antistatic additives to prepare the antistatic PA610 composite via melt extrusion with twin- screw machine. Among the three additives,the percent of carbon nanotube was lowest to meet the antistatic level and 5wt% was enough. For the other two items,15wt% addition was necessary to reach the same target. At the same time,the addition of carbon nanotube had the minimum minus influence on the mechanical properties of the resin. It was a must to improve the toughness of the composite for further application if choosing the carbon black. The addition of carbon fiber can not only reinforce the resin,but also bring the surface issue.