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北京石油化工學院2026年研究生招生接收調(diào)劑公告

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本帖產(chǎn)生 1 個翻譯EPI ，點擊這里進行查看

zbzt3000

至尊木蟲 (著名寫手)

應助: 0 (幼兒園)
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注冊: 2007-05-15
性別: GG
專業(yè): 橡膠及彈性體

[求助] 請英語高手幫忙翻譯一段中文摘要，謝謝！

請英語高手幫忙翻譯一段中文摘要，謝謝。中文摘要如下：
   超高分子量聚乙烯（簡稱 UHMWPE）纖維是繼碳纖維、對位芳綸纖維之后的第三代高性能纖維。UHMWPE纖維具有低密度、高比模量、高比強度、良好的能量吸收性能等優(yōu)點。UHMWPE纖維的出現(xiàn)打破了對位芳綸在防彈材料領(lǐng)域的壟斷地位，并有逐漸取代對位芳綸防彈材料的趨勢。因此，從個體防彈頭盔和防彈衣的防彈性和舒適性等綜合性能分析，UHMWPE纖維是目前公認的防彈性能最好的纖維。新型材料無機類富勒烯（Inorganic fullerene-like，簡稱IF）納米二硫化鎢（IF-WS2）材料具有球形的嵌套中空結(jié)構(gòu)，其外表光滑的球形可以使應力均勻地沿顆粒表面分布，嵌套中空結(jié)構(gòu)可以大量地吸收沖擊波能量，具有極好的抗沖擊和減震性能。
   本課題結(jié)合無機富勒烯納米二硫化鎢的超級吸收沖擊波性能及超高分子量聚乙烯纖維優(yōu)異的抗沖擊性能，通過將無機類富勒烯納米二硫化鎢均勻的分散于超高分子量聚乙烯紡絲溶液中，利用凍膠紡絲成型技術(shù)，制備了綜合性能優(yōu)異的UHMWPE/WS2復合防彈材料；通過彈擊實驗，評價UHMWPE/WS2復合防彈材料的防彈性能及防彈機理，以期開發(fā)具有優(yōu)異性能的新一代復合防彈材料。
   1、通過向UHWMPE紡絲溶液中加入偶聯(lián)劑處理后的納米WS2，制備了一系列納米WS2 增強的UHMWPE/WS2復合纖維。研究了納米WS2的加入對UHWMPE纖維微觀結(jié)構(gòu)、力學性能、熱穩(wěn)定性以及蠕變性能的影響。結(jié)果表明，納米WS2在UHMWPE/WS2復合纖維中具有較好的分散性；納米WS2的加入，并沒有對UHMWPE的聚集態(tài)結(jié)構(gòu)和拉曼結(jié)構(gòu)產(chǎn)生顯著影響；當納米WS2的加入量為4wt‰時，UHMWPE 纖維拉伸模量由1203 增加到1326 cN/dtex，增加了10%；此外，納米WS2的加入使得UHMWPE 纖維的耐熱性和抗蠕變性能也有了顯著提高。
   2、通過彈擊實驗、掃描電鏡、透射電鏡、X射線衍射等分析表征手段，評價了納米WS2的加入對UHMWPE防彈材料抗沖擊性能的影響，并結(jié)合對UHMWPE/WS2復合材料防彈性能的測試結(jié)果及子彈沖擊前后UHMWPE/WS2¬復合材料中IF-WS2顆粒的微觀形貌變化，提出了UHMWPE/WS2復合材料的防彈機理，即UHMWPE/WS2復合纖維中IF-WS2納米顆粒的準球形結(jié)構(gòu)可以較好的吸收外來沖擊力，從而有效抑制子彈沖擊對UHMWPE/WS2復合材料的破壞。

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1樓 2013-12-08 11:22:04

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befair

鐵桿木蟲 (正式寫手)

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★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ...
zbzt3000: 金幣+200, 翻譯EPI+1, ★★★很有幫助, 謝謝 2013-12-09 18:05:29

能力、時間有限，供參考：
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.

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2樓2013-12-08 20:22:43

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