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| 本帖產(chǎn)生 2 個(gè) 翻譯EPI ，點(diǎn)擊這里進(jìn)行查看 | |||
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高盧oo木蟲(chóng) (初入文壇)
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[求助]
摘要 急求摘要翻譯呀 急急如律令啊筒子們 高質(zhì)量答案可追加喲
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| 摘 要：采用在廢舊輪胎膠粉（GTR）與HDPE的熔融擠出過(guò)程中提高雙螺桿擠出機(jī)螺桿轉(zhuǎn)速的高剪切應(yīng)力誘導(dǎo)方法，研究了雙螺桿擠出機(jī)的螺桿轉(zhuǎn)速、擠出反應(yīng)溫度及脫硫促進(jìn)劑仲丁醇、烷基酚多硫化物（420或450）和正丁胺對(duì)輪胎膠脫硫共混物（DGTR/HDPE）的凝膠含量、熔體流動(dòng)速率、溶膠紅外吸收光譜及輪胎膠脫硫共混物(DGTR/HDPE)/三元乙丙橡膠(EPDM)動(dòng)態(tài)交聯(lián)熱塑性彈性體力學(xué)性能的影響。結(jié)果表明：高轉(zhuǎn)速同向雙螺桿擠出機(jī)的高剪切作用，可誘發(fā)廢舊輪胎膠共混物中交聯(lián)網(wǎng)絡(luò)的斷鏈和解交聯(lián)反應(yīng)，引起脫硫共混物凝膠含量的下降、未熔融凝膠顆粒尺寸的減小及熔體流動(dòng)速率的增加；四種促進(jìn)劑均具有明顯促進(jìn)脫硫反應(yīng)的作用，其中450或正丁胺的促進(jìn)脫硫效果較好，并引起脫硫產(chǎn)物凝膠含量下降、熔體流動(dòng)速率上升及動(dòng)態(tài)交聯(lián)熱塑性彈性體力學(xué)性能的明顯改善；當(dāng)以正丁胺為脫硫促進(jìn)劑時(shí)，最佳脫硫反應(yīng)條件（240℃和1000r/min）下，DGTR/HDPE/EPDM動(dòng)態(tài)交聯(lián)熱塑性彈性體的拉伸強(qiáng)度和斷裂伸長(zhǎng)率分別達(dá)到12.5Mpa和440.6%。 |
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alvarohao
鐵桿木蟲(chóng) (著名寫(xiě)手)
- 翻譯EPI: 85
- 應(yīng)助: 0 (幼兒園)
- 貴賓: 0.005
- 金幣: 13664.2
- 紅花: 3
- 沙發(fā): 5
- 帖子: 2355
- 在線(xiàn): 261.5小時(shí)
- 蟲(chóng)號(hào): 1402388
- 注冊(cè): 2011-09-15
- 性別: MM
- 專(zhuān)業(yè): 機(jī)械結(jié)構(gòu)強(qiáng)度學(xué)
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
wg423(金幣+50, 翻譯EPI+1): 代發(fā)金幣 2011-12-15 19:02:48
wg423(金幣+50, 翻譯EPI+1): 代發(fā)金幣 2011-12-15 19:02:48
| Abstract：The high shear stress inducing method, which was used to increase the screw revolving speed of the twin-screw extruder during the melt extrusion process of the waste tire rubber powder (GTR) and HDPE, was applied to study the influences on the gel content, melt flow rate, sol gel infrared absorption spectrum of the tire rubber desulfuration blends(DGTR/HDPE) and the mechanical properties of the tire rubber desulfuration blends(DGTR/HDPE)/ EPDM dynamical cross linking thermal plastic elastic body, by the screw revolving speed of the twin-screw extruder, the extrusion reaction temperature and the desulfuration accelerating agent, including the sec-butyl alcohol, the alkylphenol polysulfide(420 or 450) and the n-butylamine. The results showed that: the high shearing action of the co-rotating twin-screw extruder with high revolving speed could induce the chain scission and disassemble the cross linking reaction of the waste tire rubber blends, leading to the decrease of the gel content of the desulfuration blends, the decrease of the unmelted gel grain size and the increase of the melt flow rate; The four kinds of accelerating agents had an apparent effect of improving the desulfuration reaction, among which the 450 or the n-butylamine had better effect, leading to the decrease of the gel content of the desulfuration products, the increase of the melt flow rate and the apparent improvement of the mechanical properties of the dynamic cross linking thermal plastic elastic body; With the n-butylamine being the accelerating agent, under the best desulfuration reaction conditions（240℃ and 1000r/min）, the tensile strength and the elongation at break of the DGTR/HDPE/EPDM dynamic cross linking thermal plastic elastic body were 12.5Mpa and 440.6%, respectively. |
3樓2011-12-15 17:55:51
terry_well
榮譽(yù)版主 (知名作家)
笑熬漿糊——滿(mǎn)腦漿糊
- 翻譯EPI: 160
- 應(yīng)助: 207 (大學(xué)生)
- 貴賓: 1.508
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- 紅花: 229
- 沙發(fā): 11
- 帖子: 5857
- 在線(xiàn): 601.1小時(shí)
- 蟲(chóng)號(hào): 352600
- 注冊(cè): 2007-04-22
- 性別: GG
- 專(zhuān)業(yè): 燃燒學(xué)
- 管轄: 留學(xué)生活
【答案】應(yīng)助回帖
★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★ ★
wg423(金幣+50, 翻譯EPI+1): 代發(fā)金幣 2011-12-15 19:02:38
wg423(金幣+50, 翻譯EPI+1): 代發(fā)金幣 2011-12-15 19:02:38
|
Abstract: In the melting extrusion process of the waste tire rubber powder (GTR) and high density polyethylene (HDPE), a high speed and high shear stress-induced twin-screw extruder screw method was used to study the effect of twin-screw extruder screw speed and extrusion the reaction temperature on the physical properties of thermoplastic mterials. Besides, the effects of the desulfurization agent butanol, alkyl polysulfides (420 or 450) and n-butylamine desulfurization of tire rubber blends (DGTR/HDPE) of gel content, flow rate, sol-infrared absorption spectroscopy and desulfurization tire rubber blends (DGTR/HDPE) ethylene propylene diene monomer rubber (EPDM) dynamic cross-linking process on the mechanical properties of such materials. It was shown that high-speed twin-screw extruder with high shear could induce the scission of cross-linked network chain and reconciliation crosslinking reaction for waste tire rubber blends, causing desulfurization blends gel content decreased and reducing the size of non-melting gel particles and increasing the flow rate of the melt. In fact, those four kinds of promoters played obvious role to promote the desulfurization reaction, in which 450 or n-butylamine could promote the desulfurization effect and decrease content of desulfurization products gel and increase the flow rate of the melting. In this way, the physical properties of dynamic cross-linked thermoplastic elastomer were significantly improved. When n-butylamine as desulfurization agents was promoted, the best desulfurization reaction conditions (240 ℃ and 1000r/min) under, DGTR / HDPE / EPDM dynamically crosslinked thermoplastic elastomer tensile strength and elongation at break were obtained as 12.5MPa and 440.6%, respectively. Keywords: desulfurization, EPDM, elastomer, tire, accelerator;  沒(méi)事瞎搞得。 |
2樓2011-12-15 17:54:02
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