±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1755  |  »Ø¸´: 11
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

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 ]

» ²ÂÄãϲ»¶

ÔÚÂÃ;£¬ÏíÊÜ¿ìÀÖ
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
²é¿´È«²¿ 12 ¸ö»Ø´ð

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

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
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 269µç×ÓÐÅÏ¢Çóµ÷¼Á£¬¿Éתרҵ +5 ¶À×Ãwl 2026-04-06 5/250 2026-04-06 17:23 by ÍÁľ˶ʿÕÐÉú
[¿¼ÑÐ] 301Çóµ÷¼Á +6 ϸ°ûÏà¹Øµ°°× 2026-04-02 10/500 2026-04-06 08:34 by jp9609
[¿¼ÑÐ] ÕÒµ÷¼Á +10 ³þÇÇÇÇ 2026-04-01 10/500 2026-04-05 22:19 by syh9288
[¿¼ÑÐ] 283Çóµ÷¼Á +5 baiiyu 2026-04-05 6/300 2026-04-05 20:35 by à£à£à£0119
[¿¼ÑÐ] 327Çóµ÷¼Á +4 ʰ¹âÈÎȾ 2026-04-05 4/200 2026-04-05 20:16 by ÄϺ½~ÍòÀÏʦ
[¿¼ÑÐ] ÉúÎïÓëÒ½Ò©µ÷¼Á +4 Ê®Æßsa 2026-04-05 4/200 2026-04-05 20:05 by lys0704
[¿¼ÑÐ] 295Çóµ÷¼Á +8 FZAC123 2026-04-03 8/400 2026-04-05 17:46 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 306·Ö²ÄÁÏÓ뻯¹¤Çóµ÷¼Á +7 Àè°ÉÀ²À²ÄãºÜÓÐà 2026-04-03 7/350 2026-04-05 17:18 by Hdyxbekcb
[¿¼ÑÐ] 324Çóµ÷¼Á +9 ÏëÉÏѧÇóµ÷ 2026-04-03 9/450 2026-04-04 23:57 by ¹û¶³´óÍõ
[¿¼ÑÐ] ²ÄÁϹ¤³Ì085601Êý¶þÓ¢Ò»335Çóµ÷¼Á +6 Ë«ÂíβƦÀϰå2 2026-03-31 6/300 2026-04-04 22:29 by hemengdong
[¿¼ÑÐ] 341Çóµ÷¼Á +3 Âå¶àÂÞ 2026-04-02 4/200 2026-04-04 21:36 by ÖÇÄÜÖÇ»Û
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¿Æ¼¼´óѧ²ÄÁϹ¤³Ì085601£¬Çóµ÷¼Á +17 cdyw 2026-04-02 18/900 2026-04-04 11:14 by w_xuqing
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©½»Í¨´óѧ²ÄÁϹ¤³Ì×Ü·Ö358 +4 cs0106 2026-04-03 4/200 2026-04-03 13:41 by °ÙÁéͯ888
[¿¼ÑÐ] 330Çóµ÷¼Á +3 °×ÉñÎØºôºô 2026-04-02 3/150 2026-04-03 10:15 by À¶ÔÆË¼Óê
[¿¼ÑÐ] 309Çóµ÷¼Á +14 ´ô¹½²»ÊÇ´÷·ò 2026-04-02 14/700 2026-04-03 09:42 by À¶ÔÆË¼Óê
[¿¼ÑÐ] Ò»Ö¾Ô¸Éî´ó085601²ÄÁϹ¤³Ìרҵ£¨×¨Ë¶£©300·Ö¿ÉÒÔµ÷¼ÁÈ¥ÄÄ +8 10160315 2026-04-02 8/400 2026-04-03 09:36 by hypershenger
[¿¼ÑÐ] 312Çóµ÷¼Á +4 ÉÞÔÂÉ« 2026-04-02 5/250 2026-04-03 08:21 by fangshan711
[¿¼ÑÐ] 322Çóµ÷¼Á +5 ìäÙÒXX 2026-03-31 6/300 2026-04-02 10:08 by Çóµ÷¼Ázz
[¿¼ÑÐ] 353Çóµ÷¼Á +4 À­¹³²»Ðí±ä 2026-04-01 4/200 2026-04-01 18:10 by ¼Çʱ¾2026
[¿¼ÑÐ] 0855»úе³õÊÔ280Çóµ÷¼Á +3 kazenotori 2026-03-31 3/150 2026-04-01 10:08 by JourneyLucky
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û