碳化硅增强夹层复合材料的制备及防刺性能研究

Preparation and Anti-puncture Performance of Silicon Carbide Reinforced Sandwich Composites

为了提高芳纶无纺布的防刺性能,通过热压法制备碳化硅颗粒增强夹层防刺复合材料,将碳化硅颗粒与芳纶无纺布结合,探究碳化硅颗粒直径、含量及热压工艺对防刺性能的影响,并结合复合材料的刺口形貌和刺破强力-位移曲线图分析防刺机理。结果表明,复合材料的防刺性能随着颗粒目数的增大和含量的增加呈现出先增大后减小的趋势,当碳化硅颗粒目数为80目,含量为18 g时材料的刺破强力达到78.4 N,相较于未添加碳化硅颗粒的材料提高了124%。

In order to improve the anti-puncture performance of aramid non-woven fabrics,silicon carbide particles reinforced sandwich anti-puncture composites were prepared by hot pressing method,and silicon carbide particles were combined with aramid non-woven fabrics.In this paper,the effects of silicon carbide particle diameter,content and hot pressing process on the anti-puncture performance were explored,and the anti-puncture mechanism was analyzed by combining the puncture morphology and puncture strength-displacement curve of the composite.The results show that the anti-puncture performance of the composite shows a trend of first increasing and then decreasing with the increase of the particles and the content.The puncture strength of the material reaches 78.4N when the mesh number of silicon carbide particles is 80 mesh and the content is 18g;the performance at this point is 124%higher than that of the material without silicon carbide particles.