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mlnjut

铜虫 (知名作家)

蚂蚁一样工作,蝴蝶一样生活

[求助] 求助汉翻英。欢迎指正错误。。高分子材料方面

高分子材料方面求指正改正。。。。


对于HEC,在HEC用量为5g、醚化剂用量为7.5g、碱用量1.85g、在65℃下反应2小时,得到的QHEC取代度最优为0.61,反应效率为64%;对于PVA,在PVA的浓度为5%、醚化剂用量为7g、碱用量2.5g、在65℃下反应6小时,得到的QPVA取代度最优为3.95。
For HEC, the HEC dosage of 5g, etherification agent is 7.5g, alkali 1.85g, at 65 ℃ for 2 hours, the optimal degree of substitution obtained QHEC 0.61, the reaction efficiency was 64%; for the PVA, the PVA concentration of 5%, etherification agent is 7g, alkali 2.5g, at 65 ℃ for 6 hours, get QPVA optimal degree of substitution 3.95.

[ Last edited by mlnjut on 2011-5-27 at 20:12 ]
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me471084707

铁杆木虫 (职业作家)

面朝大海,无语。

引用回帖:
Originally posted by jacy_cheyn at 2011-05-27 16:22:46:
PVA and HEC are water-soluble. We used 3-chloro-2-hydroxypropyl trimethyl ammonium chloride as etherifying agent to introduce quaternary ammonium groups into the structure of PVA and HEC through qu ...

恁这是来练手来了?
没有别的,我只想低调的活着!
6楼2011-05-27 17:57:11
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小小傻瓜

铁杆木虫 (知名作家)

小小♡流浪♡家

Mally89: 果断要淡定啊~~~~~~ 2011-05-27 19:40:54
我表示看英语我要看疯了,我预感我的六级又要悲剧了
心若没有栖息的地方,到哪里都是流浪……
2楼2011-05-27 16:21:47
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jacy_cheyn

铁杆木虫 (知名作家)


Mally89(金币+1): 感谢应助!~欢迎常来!~ 2011-05-27 19:41:15
PVA and HEC are water-soluble. We used 3-chloro-2-hydroxypropyl trimethyl ammonium chloride as etherifying agent to introduce quaternary ammonium groups into the structure of PVA and HEC through quaternization reaction to prouduce quaternized QPVA and QHEC, respectively.
The effect of reaction conditions on the degree of substitution and reaction efficiency were studied.
For HEC, the HEC dosage of 5g, etherification agent is 7.5g, alkali 1.85g, at 65 ℃ for 2 hours, the optimal degree of substitution obtained QHEC 0.61, the reaction efficiency was 64%.(这句话没有谓语)好好改改~
for the PVA, the PVA concentration of 5%, etherification agent is 7g, alkali 2.5g, at 65 ℃ for 6 hours, get QPVA optimal degree of substitution 3.95.
(同上)
3楼2011-05-27 16:22:46
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mlnjut

铜虫 (知名作家)

蚂蚁一样工作,蝴蝶一样生活

引用回帖:
Originally posted by jacy_cheyn at 2011-05-27 16:22:46:
PVA and HEC are water-soluble. We used 3-chloro-2-hydroxypropyl trimethyl ammonium chloride as etherifying agent to introduce quaternary ammonium groups into the structure of PVA and HEC through qu ...

那怎么改呢??我分不清。。。。。
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4楼2011-05-27 16:28:40
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