为拓宽STF/防刺织物复合材料的种类,寻求更轻、更薄、更软和更经济的防刺材料,用原生粒径20nm的SiO2分散于PEG200中制得不同SiO2含量的STF,通过浸泡的方式制备出STF/UHMWPE织物复合材料.参照GA68-2003《防刺服》标准,在TLC-30A微处理器控制落锤式防刺服专用冲击试验机上测定不同条件下STF/UHMWPE复合材料的防刺性能.结果表明,STF能明显增强UHMWPE织物的防刺性能,STF/UHMWPE无纺布复合材料的防刺性能优于STF/UHMWPE机织布复合材料;并且随着STF固含量的增大,STF增强织物防刺性能的效果越显著; STF/UHMWPE复合材料与纯UHMWPE复合铺层的防刺性能优于STF/UHMWPE复合材料单独铺层时,而且STF/UHMWPE复合材料放在最上层效果较好.%To broaden STF/UHMWPE stab-resistant composite materials species and seek more milder, thinner,better and economical stab-resistant materials, STF with different amount of nano-SiO2 was prepared by dispering nano-SiO2 with particle size 20 nm in PEG200,then STF/UHMWPE stab-resistant composite materials were prepared by immersion ways. The stab-resistant behavior of composite materials in different conditions was tested by falling tup machine controlled by TLC-30A microprocessor and referring to GA 68—2003 "stab-resistant body armor". The results indicate that stab-resistant performance of UHMWPE fabric is enhanced obviously by STF, the stab-resistant performance of STF/UHMWPE non-woven fabric composite materials is better than STF/UHMWPE woven fabric composite materials; and with increasing solids content of STF, the effects of STF enhancing UHMWPE fabric's stab-resistant performance are more significant; the stab-resistant performance of STF/UHMWPE composite materials and pure UHMWPE plying compundly is better than plying individually, and composite materials plied upper are better.
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