碳化硅涂层防刺织物的制备及防刺性能的研究  

Study on Preparation and Performance of Silicon Carbide Coated Stab-Resistant Fabric

作　　者：李宗家 艾青松[1,2] 刘元坤 虎龙[1,2] 李年华 LI Zong-jia;AI Qing-song;LIU Yuan-kun;HU Long;LI Nian-hua(Beijing Institute of Aerospace Testing Technology,Beijing 100074,China;Beijing Aerospace Rate Mechanical&Electrical Engineering Co.,Ltd.,Beijing 100074,China)

机构地区：[1]北京航天试验技术研究所,北京100074 [2]北京航天雷特机电工程有限公司,北京100074

出　　处：《合成纤维》2022年第4期15-20,共6页Synthetic Fiber in China

基　　金：北京市科学技术协会“中小企业优秀技术成果转化培育项目”资助。

摘　　要：为了提高芳纶无纬布的防刺性能,采用碳化硅表面涂覆的方式制备防刺涂层织物。选择碳化硅粉体粒径、质量比和搅拌温度设计三因素四水平的正交试验,确定了最佳的碳化硅分散液的制备工艺——碳化硅粉体粒径为30μm、m_(sic)∶m_(水)∶m_(乙二醇)为2∶1∶1、搅拌温度为35℃。对涂层织物进行准静态和动态穿刺试验,探究碳化硅粉体粒径、涂层厚度和涂层结构对涂层织物防刺性能的影响,结果表明:防刺性能随着碳化硅粉体粒径和涂层厚度的增加呈现先增大后减小趋势;当碳化硅粒径为30μm、涂层厚度为75μm时,织物单位克重刺破强力达到最大值503 N/g,相较于未涂覆涂层织物提高了302%;面密度都为8.1 kg/m^(2)的18层碳化硅涂层织物结构和16层芳纶无纬布+9层碳化硅涂层织物结构均可实现有效防刺,较未涂覆结构面密度降低了10%。In order to improve the stab-resistant performance of aramid unidirectional fabrics, the stab-resistant coated fabrics were prepared by surface coating with silicon carbide. The orthogonal experiment with three factors and four levels of silicon carbide powder particle size, mass ratio and stirring temperature was designed, the optimal preparation processes of silicon carbide dispersion—the particle size of silicon carbide powder was 30 μm, m_(SiC):m_(water):m_(ethylene glycol)was 2∶1∶1, and the stirring temperature was 35 ℃ were determined. Quasi-static and dynamic puncture tests were conducted on coated fabrics to explore the effects of silicon carbide powder particle size, coating thickness and coating structure on the stab-resistant performance of coated fabrics. The results show that the stab-resistant performance increases first and then decreases with the increase of the particle size of the silicon carbide powder and the coating thickness. When the particle size of silicon carbide is 30 μm and the coating thickness is 75 μm, the unit weight puncture strength of the fabric reaches the maximum value of 503 N/g, which is 302% higher than that of the uncoated fabric. The 18-layer silicon carbide coated fabric structure and the 16-layer aramid unidirectional fabric + 9-layer silicon carbide coated fabric structure with an areal density of 8.1 kg/m^(2) can achieve effective stab resistance, and the areal density is 10% lower than that of the uncoated structure.

关 键 词：芳纶无纬布 碳化硅涂层 防刺性能 

分 类 号：TQ342.722[化学工程—化纤工业]