Znn3bq.jpeg
查看: 1776  |  回复: 11
本帖产生 1 个 翻译EPI ,点击这里进行查看
当前只显示满足指定条件的回帖,点击这里查看本话题的所有回帖

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 ]

» 猜你喜欢

在旅途,享受快乐
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

fds329

荣誉版主 (文坛精英)

鱼大婶

优秀版主优秀版主优秀版主优秀版主

【答案】应助回帖

mlnjut(金币+4): 可以的。。嘿嘿 2011-05-27 20:43:49
mlnjut(金币+6): 2011-05-28 08:15:58
the optimal degree of substitution obtained QHEC 0.61, the reaction efficiency was 64%可以做主句,
For HEC, the HEC dosage of 5g, etherification agent is 7.5g, alkali 1.85g, at 65 ℃ for 2 hours,用“when.....”
不知道可以不
8楼2011-05-27 19:54:41
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
查看全部 12 个回答

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
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

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
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖

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。。。。。
在旅途,享受快乐
4楼2011-05-27 16:28:40
已阅   回复此楼   关注TA 给TA发消息 送TA红花 TA的回帖
最具人气热帖推荐 [查看全部] 作者 回/看 最后发表
[考研] 一志愿0703化学招61最终排名62化学求调剂 +13 招61排名62 2026-04-07 15/750 2026-04-08 23:06 by 招61排名62
[考研] 一志愿华南师范大学0702物理学305调剂 +4 念常安 2026-04-07 6/300 2026-04-08 22:53 by bljnqdcc
[考研] 调剂 +19 不逢春 2026-04-07 20/1000 2026-04-08 22:50 by bljnqdcc
[考研] 材料调剂 +14 一样YWY 2026-04-02 15/750 2026-04-08 22:40 by 猪会飞
[考研] 085404,334分,求调剂 +5 sunjie8888 2026-04-08 5/250 2026-04-08 21:39 by 313165yang
[考研] 277求调剂 +16 倪建设 2026-04-06 16/800 2026-04-08 21:28 by zhouxiaoyu
[考研] 327求调剂 +12 Xxjc1107. 2026-04-06 12/600 2026-04-08 16:46 by luoyongfeng
[考研] 材料专硕322分 +12 哈哈哈吼吼吼哈 2026-04-02 12/600 2026-04-08 11:43 by 1753564080
[考研] 机械工程264学硕求调剂 +3 qiushangxian 2026-04-06 3/150 2026-04-08 01:53 by Linzejun
[考研] 388求调剂 +6 四川王涛 2026-04-07 8/400 2026-04-08 00:17 by JourneyLucky
[考研] 305求调剂 +4 77Qi 2026-04-06 4/200 2026-04-07 20:06 by shanqishi
[考研] 283求调剂 +5 baiiyu 2026-04-05 6/300 2026-04-05 20:35 by 啵啵啵0119
[考研] 工科08-机械专硕-求调剂 +3 雷欧飞踢 2026-04-02 3/150 2026-04-05 18:49 by 蓝云思雨
[考研] 一志愿北京交通大学材料工程总分358求调剂 +4 cs0106 2026-04-04 4/200 2026-04-05 18:46 by imissbao
[考研] 求调剂到0856材料工程 +3 程9915 2026-04-05 3/150 2026-04-05 18:15 by 蓝云思雨
[考研] 工科求调剂 +15 11ggg 2026-04-03 15/750 2026-04-05 16:24 by zzx2138
[考研] 353求调剂 +10 MayUxw1 2026-04-03 10/500 2026-04-05 09:23 by 无际的草原
[考研] 290求调剂 +7 luoziheng 2026-04-04 7/350 2026-04-04 23:17 by lqwchd
[考研] 可跨专业调剂 +3 周的得地 2026-04-04 6/300 2026-04-04 22:21 by barlinike
[考研] 一志愿北京科技材料科学与工程288分,求调剂 +14 是辰啊 2026-04-02 14/700 2026-04-02 21:10 by dongzh2009
信息提示
请填处理意见