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[求助]
求達(dá)人潤色一段英文摘要
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| 求達(dá)人潤色一段摘要:摘要：本文對兩種常用防毒面具罩體材料的性能進(jìn)行了表征。結(jié)果表明：在目前的生產(chǎn)配方及硫化條件下，NR罩體材料的拉伸強度為22.0MPa、撕破強力為41.3KN∙m-1，高于CIIR罩體材料的13.2MPa和35.5KN∙m-1，NR罩體具有較高力學(xué)性能的原因在于其能夠產(chǎn)生應(yīng)變誘導(dǎo)結(jié)晶；NR罩體和CIIR罩體材料的回彈率分別為60%和16%，芥子氣在兩種罩體中的擴散系數(shù)分別為6.85×10-13m2/s和2.10×10-11m2/s，CIIR罩體材料較低的回彈率和優(yōu)良的阻隔性能均與分子結(jié)構(gòu)中占優(yōu)的異丁烯鏈節(jié)上密集的側(cè)甲基有關(guān)；NR罩體和CIIR罩體材料的Tg分別為-55oC和-36oC，說明NR罩體具有較好的低溫使用性能，較大內(nèi)摩擦損耗所導(dǎo)致的分子鏈運動能力減弱是CIIR罩體材料Tg較高的主要原因。This paper presents properties of faceblanks for two commonly used respirators based on NR and CIIR. The results show that under the existing practrical formula and curing conditions, NR faceblank offers tensile strength of 22.0MPa and tear force of 41.3KN∙m-1, higher than those offered by CIIR faceblank which are 13.2MPa and 35.5KN∙m-1, the mechanical superiority of NR faceblank is mainly derived from the strain-induced cyrstallization. Resiliences of NR and CIIR faceblanks are 60% and 16%, and diffusion coefficients of sulphur mustard in the two faceblanks are 2.10×10-11m2/s and 6.85×10-13m2/s, respectively. Low resilience and excellent barrier property of CIIR faceblank are due to the dense side methyl groups in the predominant isobutylene units. The Tg values for the NR and CIIR faceblank are -55oC and-36oC, suggesting the NR faceblank having a fairly good performance than the CIIR faceblank in cold weather. The weak chain segment motion ability originated from great internal friction is responsible for the high Tg value for CIIR faceblank. |
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2樓2015-12-14 19:51:14
明子眸
銅蟲 (小有名氣)
- 翻譯EPI: 6
- 應(yīng)助: 1 (幼兒園)
- 金幣: 1645.2
- 散金: 20
- 紅花: 1
- 帖子: 231
- 在線: 186.1小時
- 蟲號: 1373489
- 注冊: 2011-08-20
- 性別: GG
- 專業(yè): 光學(xué)和光電子材料
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★
xpz-wdy: 金幣+6, 翻譯EPI+1, ★有幫助 2015-12-15 19:49:25
xpz-wdy: 金幣+6, 翻譯EPI+1, ★有幫助 2015-12-15 19:49:25
|
表征的手段已經(jīng)過去了，用一般過去時。而實驗結(jié)果用一般現(xiàn)在時態(tài)。我刪掉了一些多余的東西，所以整句話應(yīng)該這樣來翻譯。 Abstract: In this paper, the properties of two face-pieces materials for respirators were respectively characterized (你的這句話只講了一半，所以這里再加上一句，被什么儀器、什么檢測手段或者什么方法所表征). Results show that the tensile and tearing strength of NR respirators are 22.0 MPa and 41.3 KN∙m-1 independently under the currently production condition, which is better than that of CIIR respirators because of the strain induced crystallization. Due to the congested methyl on the link of isobutene, the rebound ratio and diffusion coefficient of the CIIR is lower than that of the NR. Importantly, the Tg of the NR is lower to -55oC than that of the CIIR (-36oC), which indicates that NR face-pieces materials has an excellent performance in lower temperature. Moreover, the motion ability of molecular chain is weakened by large wastage of internal friction, which is major cause for high Tg value of CIIR respirators. |
3樓2015-12-15 13:58:37
4樓2015-12-15 19:54:26
mac194
鐵蟲 (職業(yè)作家)
- 翻譯EPI: 61
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- 金幣: 21401.3
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- 帖子: 3332
- 在線: 3370.2小時
- 蟲號: 2488597
- 注冊: 2013-05-30
- 專業(yè): 高分子材料的加工與成型
5樓2015-12-17 12:54:59
6樓2015-12-17 18:56:31
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