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zbzt3000至尊木虫 (著名写手)
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[求助]
请英语高手帮忙翻译一段中文摘要，谢谢！
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请英语高手帮忙翻译一段中文摘要，谢谢。中文摘要如下： 超高分子量聚乙烯（简称 UHMWPE）纤维是继碳纤维、对位芳纶纤维之后的第三代高性能纤维。UHMWPE纤维具有低密度、高比模量、高比强度、良好的能量吸收性能等优点。UHMWPE纤维的出现打破了对位芳纶在防弹材料领域的垄断地位，并有逐渐取代对位芳纶防弹材料的趋势。因此，从个体防弹头盔和防弹衣的防弹性和舒适性等综合性能分析，UHMWPE纤维是目前公认的防弹性能最好的纤维。新型材料无机类富勒烯（Inorganic fullerene-like，简称IF）纳米二硫化钨（IF-WS2）材料具有球形的嵌套中空结构，其外表光滑的球形可以使应力均匀地沿颗粒表面分布，嵌套中空结构可以大量地吸收冲击波能量，具有极好的抗冲击和减震性能。 本课题结合无机富勒烯纳米二硫化钨的超级吸收冲击波性能及超高分子量聚乙烯纤维优异的抗冲击性能，通过将无机类富勒烯纳米二硫化钨均匀的分散于超高分子量聚乙烯纺丝溶液中，利用冻胶纺丝成型技术，制备了综合性能优异的UHMWPE/WS2复合防弹材料；通过弹击实验，评价UHMWPE/WS2复合防弹材料的防弹性能及防弹机理，以期开发具有优异性能的新一代复合防弹材料。 1、通过向UHWMPE纺丝溶液中加入偶联剂处理后的纳米WS2，制备了一系列纳米WS2 增强的UHMWPE/WS2复合纤维。研究了纳米WS2的加入对UHWMPE纤维微观结构、力学性能、热稳定性以及蠕变性能的影响。结果表明，纳米WS2在UHMWPE/WS2复合纤维中具有较好的分散性；纳米WS2的加入，并没有对UHMWPE的聚集态结构和拉曼结构产生显著影响；当纳米WS2的加入量为4wt‰时，UHMWPE 纤维拉伸模量由1203 增加到1326 cN/dtex，增加了10%；此外，纳米WS2的加入使得UHMWPE 纤维的耐热性和抗蠕变性能也有了显著提高。 2、通过弹击实验、扫描电镜、透射电镜、X射线衍射等分析表征手段，评价了纳米WS2的加入对UHMWPE防弹材料抗冲击性能的影响，并结合对UHMWPE/WS2复合材料防弹性能的测试结果及子弹冲击前后UHMWPE/WS2¬复合材料中IF-WS2颗粒的微观形貌变化，提出了UHMWPE/WS2复合材料的防弹机理，即UHMWPE/WS2复合纤维中IF-WS2纳米颗粒的准球形结构可以较好的吸收外来冲击力，从而有效抑制子弹冲击对UHMWPE/WS2复合材料的破坏。 |
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befair
铁杆木虫 (正式写手)
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zbzt3000: 金币+200, 翻译EPI+1, ★★★很有帮助, 谢谢 2013-12-09 18:05:29
zbzt3000: 金币+200, 翻译EPI+1, ★★★很有帮助, 谢谢 2013-12-09 18:05:29
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能力、时间有限，供参考： UHMWPE fiber is the third generation high performance fiber after carbon fiber and Kevlar fiber. It has advantages of low density, high specific modulus, high specific strength and excellent energy absorption. Its appearance broke the monopoly of Kevlar fiber in the field of bullet-proof materials and it tends to gradually replace the latter. Hence, with respect to analyses of the bullet-proof and wear comfort as well as other general performance, UHMWPE fiber is the best bullet-proof fiber generally recognised today. The new material IF-WS2 (inorganic fullerene-like, IF) has a spherical nesting hollow structure and its spherical shape with smooth surfaces makes stress uniformly distributed at grain surfaces. Therefore this nesting hollow structure can greatly absorb shock wave energy, rendering excellent shock resistance and absorption properties. This project combines the advantages of the superior shock wave absorption of IF-WS2 and the excellent shock resistance of UHMWPE fiber. By dispersing IF-WS2 uniformly into UHMWPE spinning solutions and using gel spinning molding technology, a UHMWPE/WS2 composite bullet-proof material with generally excellent performance is prepared. Through live shell experiment, the bullet-proof performance and mechanism of UHMWPE/WS2 composite bullet-proof material is evaluated in order to develop new generations of composite bullet-proof materials with superior performance. 1. A series of nano WS2-strengthened UHMWPE/WS2 composite fiber are prepared by adding nano WS2, which is treated by coupling agent, to UHMWPE spinning solutions. Impacts of adding nano WS2 on the microstructure, mechanical properties, heat stability and creep of UHWMPE fiber are studied. The results show that nano WS2 has a good dispersibility in UHMWPE/WS2 composite fiber. The addition of nano WS2 does not have significant impact on the aggregation structure and Raman structure of UHMWPE. When the addition of nano WS2 is at 4wt‰, the tensile modulus of UHMWPE fiber increases from 1203 to 1326 cN/dtex, i.e. 10%. Moreover, the addition of nano WS2 has also significantly improved the heat resistance and creep resistance performance of UHMWPE fiber. 2. Through live shell experiment, SEM, TEM and X-ray diffraction and other analytical means of characterisation, the impact of adding nano WS2 on shock resistance for UHMWPE bullet-proof materials is evaluated. Integrating the bullet-proof performance measurements of UHMWPE/WS2 composite material and the changes in micro-morphology of IF-WS2 grains in UHMWPE/WS2 composite material, before and after the bullet shock, a bullet-proof mechanism for the UHMWPE/WS2 composite material is proposed. That is, the sub-spherical structure of IF-WS2 nano grains in UHMWPE/WS2 composite fiber can greatly absorb external shock, hence effectively suppress the damage to UHMWPE/WS2 composite material by the bullet shock. |
2楼2013-12-08 20:22:43
