²é¿´: 2163  |  »Ø¸´: 11
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

mlnjut

Í­³æ (ÖªÃû×÷¼Ò)

ÂìÒÏÒ»Ñù¹¤×÷£¬ºûµûÒ»ÑùÉú»î

[ÇóÖú] ÇóÖúºº·­Ó¢¡£»¶Ó­Ö¸Õý´íÎ󡣡£¸ß·Ö×Ó²ÄÁÏ·½Ãæ

¸ß·Ö×Ó²ÄÁÏ·½ÃæÇóÖ¸Õý¸ÄÕý¡£¡£¡£¡£


¶ÔÓÚHEC£¬ÔÚHECÓÃÁ¿Îª5g¡¢ÃÑ»¯¼ÁÓÃÁ¿Îª7.5g¡¢¼îÓÃÁ¿1.85g¡¢ÔÚ65¡æÏ·´Ó¦2Сʱ£¬µÃµ½µÄQHECÈ¡´ú¶È×îÓÅΪ0.61£¬·´Ó¦Ð§ÂÊΪ64%£»¶ÔÓÚPVA£¬ÔÚPVAµÄŨ¶ÈΪ5%¡¢ÃÑ»¯¼ÁÓÃÁ¿Îª7g¡¢¼îÓÃÁ¿2.5g¡¢ÔÚ65¡æÏ·´Ó¦6Сʱ£¬µÃµ½µÄQPVAÈ¡´ú¶È×îÓÅΪ3.95¡£
For HEC, the HEC dosage of 5g, etherification agent is 7.5g, alkali 1.85g, at 65 ¡æ 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 ¡æ for 6 hours, get QPVA optimal degree of substitution 3.95.

[ Last edited by mlnjut on 2011-5-27 at 20:12 ]
ÔÚÂÃ;£¬ÏíÊÜ¿ìÀÖ
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ССɵ¹Ï

Ìú¸Ëľ³æ (ÖªÃû×÷¼Ò)

СС♡Á÷ÀË♡¼Ò

Mally89: ¹û¶ÏÒªµ­¶¨°¡~~~~~~ 2011-05-27 19:40:54
ÎÒ±íʾ¿´Ó¢ÓïÎÒÒª¿´·èÁË£¬ÎÒÔ¤¸ÐÎÒµÄÁù¼¶ÓÖÒª±¯¾çÁË
ÐÄÈôûÓÐÆÜÏ¢µÄµØ·½£¬µ½ÄÄÀï¶¼ÊÇÁ÷ÀË¡­¡­
2Â¥2011-05-27 16:21:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jacy_cheyn

Ìú¸Ëľ³æ (ÖªÃû×÷¼Ò)

¡ï
Mally89(½ð±Ò+1): ¸ÐлӦÖú£¡~»¶Ó­³£À´£¡~ 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 ¡æ for 2 hours, the optimal degree of substitution obtained QHEC 0.61, the reaction efficiency was 64%.(Õâ¾ä»°Ã»ÓÐνÓºÃºÃ¸Ä¸Ä~
for the PVA, the PVA concentration of 5%, etherification agent is 7g, alkali 2.5g, at 65 ¡æ for 6 hours, get QPVA optimal degree of substitution 3.95.
£¨Í¬ÉÏ£©
3Â¥2011-05-27 16:22:46
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

mlnjut

Í­³æ (ÖªÃû×÷¼Ò)

ÂìÒÏÒ»Ñù¹¤×÷£¬ºûµûÒ»ÑùÉú»î

ÒýÓûØÌû:
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 ...

ÄÇÔõô¸ÄÄØ£¿£¿ÎÒ·Ö²»Çå¡£¡£¡£¡£¡£
ÔÚÂÃ;£¬ÏíÊÜ¿ìÀÖ
4Â¥2011-05-27 16:28:40
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

a349857460

ľ³æ (ÖøÃûдÊÖ)

²»ÒªÓúºÓï·­Ò룬ҪÀí½âÒÔºóÖ±½ÓÓÃÓ¢Óïд
5Â¥2011-05-27 17:17:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

me471084707

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

Ãæ³¯´óº££¬ÎÞÓï¡£

ÒýÓûØÌû:
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 ...

í¥ÕâÊÇÀ´Á·ÊÖÀ´ÁË£¿
ûÓбðµÄ£¬ÎÒÖ»ÏëµÍµ÷µÄ»î×Å£¡
6Â¥2011-05-27 17:57:11
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

me471084707

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

Ãæ³¯´óº££¬ÎÞÓï¡£

ÒýÓûØÌû:
Originally posted by a349857460 at 2011-05-27 17:17:04:
²»ÒªÓúºÓï·­Ò룬ҪÀí½âÒÔºóÖ±½ÓÓÃÓ¢Óïд

¸ßÈË£¬ÎÊÌâÊÇд²»³öÀ´°¡¡£¡£¡£Ã»´Ê¡£¡£
ûÓбðµÄ£¬ÎÒÖ»ÏëµÍµ÷µÄ»î×Å£¡
7Â¥2011-05-27 17:57:37
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

fds329

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

Óã´óÉô

ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

mlnjut(½ð±Ò+4): ¿ÉÒԵġ£¡£ºÙºÙ 2011-05-27 20:43:49
mlnjut(½ð±Ò+6): 2011-05-28 08:15:58
the optimal degree of substitution obtained QHEC 0.61, the reaction efficiency was 64%¿ÉÒÔ×öÖ÷¾ä£¬
For HEC, the HEC dosage of 5g, etherification agent is 7.5g, alkali 1.85g, at 65 ¡æ for 2 hours,Óá°when.....¡±
²»ÖªµÀ¿ÉÒÔ²»
8Â¥2011-05-27 19:54:41
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jacy_cheyn

Ìú¸Ëľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

mlnjut(½ð±Ò+30, ·­ÒëEPI+1): ºÜºÃµÄŶ¡£¡£Ð»Ð»£¬ÄãµÄÍ·ÏñºÜƯÁÁ¡£¡£ 2011-05-27 20:30:38
ÒýÓûØÌû:
Originally posted by mlnjut at 2011-05-27 16:28:40:
ÄÇÔõô¸ÄÄØ£¿£¿ÎÒ·Ö²»Çå¡£¡£¡£¡£¡£

ǰÁ½¾äÎÒÈÏΪ²»Ç¡µ±µÄµØ·½ÒѾ­¸ÄÁË~¡£ºÇºÇ¡£¾ÍÊÇÌùÉÏÈ¥µÄ¡£
µÚÈý¾ÖºÍµÚËľÖʵÔÚÊÇ¿´×ÅÓеã·Ö²»×ÅÍ·ÄÔ¡£
¡°¶ÔÓÚHEC£¬ÔÚHECÓÃÁ¿Îª5g¡¢ÃÑ»¯¼ÁÓÃÁ¿Îª7.5g¡¢¼îÓÃÁ¿1.85g¡¢ÔÚ65¡æÏ·´Ó¦2Сʱ£¬µÃµ½µÄQHECÈ¡´ú¶È×îÓÅΪ0.61£¬·´Ó¦Ð§ÂÊΪ64%£»¸ÄΪ£º
HEC, etherification agent and alkali were added in to the reaction with the amounts of which were 5g, 7.5g and 1.85g respectively. The reaction will last 2 hours at the temperature of 65 ¡æ, and the optimal degree of substitution will be up to 0.61 with the reaction efficiency of 64%.

ÏÂÒ»¾äÄãÓ¦¸Ã¿ÉÒÔÁ˰É~£¬Ò²ÐíÎÒдµÄÒ²²»¶à£¬Ï໥½»Á÷°É~£¬O(¡É_¡É)O~
9Â¥2011-05-27 20:23:22
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

jacy_cheyn

Ìú¸Ëľ³æ (ÖªÃû×÷¼Ò)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
sltmac(½ð±Ò+1): BB½±Àø 2011-05-28 00:41:06
mlnjut(½ð±Ò+10): 2011-05-28 08:16:03
¸üÕýÏ£¬ÓиöµØ·½´íÁË~£¬ºÇºÇ£¬ÏÂÃæÊǶԵÄ~

HEC, etherification agent and alkali were added in to the reaction with the amounts of 5g, 7.5g and 1.85g respectively. The reaction will last 2 hours at the temperature of 65 ¡æ, and the optimal degree of substitution will be up to 0.61 with the reaction efficiency of 64%.
10Â¥2011-05-27 20:24:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ mlnjut µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[»ù½ðÉêÇë] Ã÷ÌìÓ¦¸Ã¿É²éÁË£¡£¿ +5 chengyan1220 2026-08-23 5/250 2026-08-24 23:28 by ÎÒ4´ó°×²Ë
[»ù½ðÉêÇë] ûÓÐÈκÎÏûÏ¢-ÊDz»ÊǾÍÁ¹ÁË +7 ͼÀ²Í¼À² 2026-08-24 8/400 2026-08-24 22:00 by maomao_da
[ÂÛÎÄͶ¸å] ÊÛSCI-T0PÎÄÕ£¬ÎÒ:8O.5.5.1.O.54,¿ÆÄ¿ÆëÈ«,¿É+¼± +3 0XLacIJUOj8D 2026-08-24 3/150 2026-08-24 21:59 by BZKMTicpDhFj
[»ù½ðÉêÇë] ÈËÆø²»ÐÐÁË +10 fansofjerry 2026-08-21 10/500 2026-08-24 21:03 by zhanghaozhu
[»ù½ðÉêÇë] ÎÒÃæÉÏÍêµ°ÁË +9 ÇÒÌý»¢Ð¥ 2026-08-20 10/500 2026-08-24 20:08 by ¿àº®À´Ïã
[»ù½ðÉêÇë] filecode£¬4¸öjtjcÁË +14 ziyangfang 2026-08-19 17/850 2026-08-24 18:37 by ¹þ¹þ¸ò£¿
[»ù½ðÉêÇë] 2026¹ú×ÔÈ»º¯ÆÀ·Ñµ½ÕË +17 ÑòÑü°å 2026-08-21 19/950 2026-08-24 16:52 by iaeyuan
[»ù½ðÉêÇë] ½¨Òé»ù½ð·¢²¼Ìáǰ¸ø³öÃ÷È·µÄʱ¼äµã +13 kulium 2026-08-21 16/800 2026-08-24 16:27 by superceng
[»ù½ðÉêÇë] ¹À¼ÆÊÇÖÜËÄ +4 archvillain 2026-08-18 4/200 2026-08-24 13:53 by zzuzxg
[»ù½ðÉêÇë] ÈÃÎÒÖÐÒ»¸öÃæÉϰɣ¡ +13 ´óƼ1987 2026-08-20 16/800 2026-08-24 10:23 by ̫ɵÁË
[»ù½ðÉêÇë] ¿ÆÑй¶ùÌ«ÄÑÁË +18 ÎÒ4´ó°×²Ë 2026-08-20 19/950 2026-08-24 09:47 by ¿­¶÷¹ãÊ¢´ß»¯·ÖÎ
[»ù½ðÉêÇë] ʲôʱºò¿ª½±£¿ +10 CrisMessi 2026-08-18 11/550 2026-08-24 06:50 by ¿ªÐĵÄСʨ×Ó
[½Ìʦ֮¼Ò] Ìø²ÛºóÔÚÑÐÏîÄ¿Ôõô°ì£¿ +5 ¼òµ¥»¯xn 2026-08-22 10/500 2026-08-23 12:38 by ¼òµ¥»¯xn
[»ù½ðÉêÇë] ½ñÌì·Å°ñÂ𣿠+15 ²¼²¼ºÍÒ»¶þ 2026-08-19 16/800 2026-08-23 09:55 by ÕÅ´ºÉú
[»ù½ðÉêÇë] Ö»ÓÐÿÄêÕâÖÖʱºòÀ´¹ä¹äСľ³æ +24 yaoyewhu2008 2026-08-20 26/1300 2026-08-22 17:43 by kammury
[»ù½ðÉêÇë] ½ñÌì»ù½ð»á³ö½á¹ûÂð£¿20260819 +16 kkkl_v 2026-08-19 17/850 2026-08-22 16:12 by °¢²¼Abu
[»ù½ðÉêÇë] ¿´À´½ñÌì²»»á·Å°ñÁË£¿ +8 chengyan1220 2026-08-21 11/550 2026-08-21 17:52 by dcqxinyang
[»ù½ðÉêÇë] ʱ¼ä´ÁÓÖ±äÁË +13 wuchongjun 2026-08-20 19/950 2026-08-21 17:21 by ×Ïɼ´¼
[»ù½ðÉêÇë] »ù½ð°¡»ù½ð +4 longfie172 2026-08-20 4/200 2026-08-21 08:58 by mark mao
[»ù½ðÉêÇë] ½ñÌìά»¤ÏµÍ³Î¬»¤ ×£ËùÓÐÈË ¸ßÖÐ +8 gjjjzhong 2026-08-18 9/450 2026-08-18 13:01 by ¼ÒÓëÔ¶·½
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û