±±¾©Ê¯ÓÍ»¯¹¤Ñ§Ôº2026ÄêÑо¿ÉúÕÐÉú½ÓÊÕµ÷¼Á¹«¸æ
²é¿´: 1491  |  »Ø¸´: 8
µ±Ç°Ö»ÏÔʾÂú×ãÖ¸¶¨Ìõ¼þµÄ»ØÌû£¬µã»÷ÕâÀï²é¿´±¾»°ÌâµÄËùÓлØÌû

shuyixie

½ð³æ (СÓÐÃûÆø)

[ÇóÖú] PVAË®ÈÜÒºµç·Ä£¬¼ÓÈëTHFºóÎÞ·¨·Ä³ÉË¿

PVAË®ÈÜÒºµç·Ä£¬¼ÓÈëTHFºóÎÞ·¨·Ä³ÉË¿¡£
ʹÓÃ6-10wt%µÄPVAË®ÈÜÒº¾ù¿ÉÒÔ·ÄË¿£¬µ«¼ÓÈëÉÙÁ¿THFÈܼÁºó£¬ÔÚÏàͬµÄµçѹÏÂÎÞ·¨µÃµ½Ë¿×´ÎÕë¿ÚÓдóÒºµÎÐγɲ¢ÔÚ½ÓÊÕ°åÉÏ¿´µ½Ã÷ÏÔÒºµÎ¡£¼Ó´óÇý¶¯µçѹºó¿ÉÒԷijÉÏËά£¬µ«ÔÚµç×ÓÏÔ΢¾µÏ¿´µ½µÄÊÓÒ°ÖÐÓֺܶàÔ²×´ÒºµÎ¡£ÇëÎÊÔõÑùµ÷Õû¸÷ÖÖ²ÎÊý²ÅÄܱÜÃâÕâÖÖÇé¿öµÄ·¢Éú£¬ÁíÍ⣬²úÉúÕâÖÖÇé¿öµÄÔ­ÒòÊÇÊ²Ã´ÄØ£¿
»Ø¸´´ËÂ¥
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

shuyixie

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
2Â¥: Originally posted by wlctcl at 2013-08-18 10:34:27
THFÊDz»ÄÜÈܽâpvaµÄ£¬Äã¼ÓTHF¾ÍÏ൱ÓÚÔÚ¼Ò³Áµí¼Á£¬¼ÓÈëµÄÁ¿ÉÙËä²»»á³öÏÖÃ÷ÏԵķֲ㣬µ«ÓпÉÄܰÑPVA·Ö¸ô³ÉÁËÒ»¸ö¸öµÄ²»Á¬ÐøÏ࣬

˵µÄºÜÓеÀÀí£¬ÇëÎÊÕâÖÖÇé¿öÔõô¿Ë·þÄØ£¿±ÈÈçÒªÔÚPVAÖмÓÈëÉÙÁ¿¹¦ÄÜÐÔС·Ö×Ó£¬µ«ÊÇÎÞ·¨ÕÒµ½Ò»ÖÖ¼ÈÄÜÈܽâPVAÒ²¿ÉÒÔÈܽâ¸ÃС·Ö×ÓµÄÁ¼ÈܼÁµÄʱºò£¬Ôõô´¦Àí±È½ÏºÃ£¿
4Â¥2013-08-18 22:23:04
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
²é¿´È«²¿ 9 ¸ö»Ø´ð

wlctcl

ľ³æ (ÖøÃûдÊÖ)

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¡ï
¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
ÒìÇèËáõ¥: ½ð±Ò+1, ¸ÐлӦÖú 2013-08-19 09:50:09
THFÊDz»ÄÜÈܽâpvaµÄ£¬Äã¼ÓTHF¾ÍÏ൱ÓÚÔÚ¼Ò³Áµí¼Á£¬¼ÓÈëµÄÁ¿ÉÙËä²»»á³öÏÖÃ÷ÏԵķֲ㣬µ«ÓпÉÄܰÑPVA·Ö¸ô³ÉÁËÒ»¸ö¸öµÄ²»Á¬ÐøÏ࣬
ÃÎÏë×ÅÓÐÒ»ÌìÄÜÕªÏÂÒ»¿ÅÌìÉϵÄÐÇÐÇ
2Â¥2013-08-18 10:34:27
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

zznjut

ÈÙÓþ°æÖ÷ (ÎÄ̳¾«Ó¢)

ÍòÀï¶ÀÐÐÖ®½­ºþÉ¢ÈË

ÓÅÐã°æÖ÷

¡¾´ð°¸¡¿Ó¦Öú»ØÌû

¸Ðл²ÎÓ룬ӦÖúÖ¸Êý +1
I think this is due to fact that THF is a non-solvent for PVA
ºÌ¿ÚÑÔ½ÔÍÁÒ²ÍõÇó
3Â¥2013-08-18 11:31:47
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

shuyixie

½ð³æ (СÓÐÃûÆø)

ÒýÓûØÌû:
3Â¥: Originally posted by zznjut at 2013-08-18 11:31:47
I think this is due to fact that THF is a non-solvent for PVA

If the usage of THF  is unavoidable, how to overcome the defect by other methods?
5Â¥2013-08-18 22:25:58
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] Ò»Ö¾Ô¸±±¾©¹¤Òµ´óѧ£¬324·ÖÇóµ÷¼Á +5 Áã°Ë# 2026-03-28 5/250 2026-03-29 20:42 by ¿ñìÅÂóµ±µ±
[¿¼ÑÐ] 085601²ÄÁϹ¤³ÌÕÒµ÷¼Á +13 oatmealR 2026-03-29 14/700 2026-03-29 16:41 by ѧԱ8dgXkO
[¿¼ÑÐ] Ò»Ö¾Ô¸ÄϺ½ 335·Ö | 0856 | GPA 4.07 | ÓпÆÑо­Àú +7 cccchenso 2026-03-29 7/350 2026-03-29 15:00 by ÌÆãå¶ù
[¿¼ÑÐ] 375Çóµ÷¼Á +4 ÓêÏÄÕûÒ¹ 2026-03-29 4/200 2026-03-29 12:09 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 343Çóµ÷¼Á +6 °®î¿°í 2026-03-29 6/300 2026-03-29 12:00 by Î޼ʵIJÝÔ­
[¿¼ÑÐ] 321Çóµ÷¼Á +7 è±Óñ~~ 2026-03-25 8/400 2026-03-29 06:41 by 544594351
[¿¼ÑÐ] 295Çóµ÷¼Á +4 wei-5 2026-03-26 4/200 2026-03-28 23:20 by Сľ³ætim
[¿¼ÑÐ] 283Çóµ÷¼Á +3 A child 2026-03-28 3/150 2026-03-28 15:41 by ms629
[¿¼ÑÐ] 312£¬ÉúÎïѧÇóµ÷¼Á +3 СÒëͬѧabc 2026-03-28 3/150 2026-03-28 15:32 by ÂäÉ˼
[¿¼ÑÐ] 283Çóµ÷¼Á +7 A child 2026-03-28 7/350 2026-03-28 12:05 by zllcz
[¿¼ÑÐ] 0703»¯Ñ§/290Çóµ÷¼Á/±¾¿Æ¾­Àú·á¸»/¹¤¿ÆÒ²¿É +9 µ¤ÇàÄÌ¸Ç 2026-03-26 10/500 2026-03-28 07:45 by barnett0632
[¿¼ÑÐ] 315·ÖÇóµ÷¼Á +7 26¿¼ÑÐÉϰ¶°æ26 2026-03-26 7/350 2026-03-28 04:05 by fmesaito
[¿¼ÑÐ] 085600²ÄÁÏÓ뻯¹¤µ÷¼Á +10 A-¶ßÀ²ZÃÎ 2026-03-23 16/800 2026-03-27 15:13 by caszguilin
[¿¼ÑÐ] 0856µ÷¼Á +5 ÇóÇóÈÃÎÒÓÐÊé¶Á° 2026-03-26 6/300 2026-03-27 15:12 by caszguilin
[¿¼ÑÐ] 348Çóµ÷¼Á +4 СÀÁ³æ²»ÀÁÁË 2026-03-27 5/250 2026-03-27 12:47 by ¹û¹ûÂèßä
[¿¼ÑÐ] 0703»¯Ñ§Çóµ÷¼Á +3 µ¤ÇàÄÌ¸Ç 2026-03-26 5/250 2026-03-26 20:11 by macy2011
[¿¼ÑÐ] 290·Öµ÷¼ÁÇóÖú +3 ¼ªÏéÖ¹Ö¹³Â 2026-03-25 3/150 2026-03-25 19:58 by barlinike
[¿¼ÑÐ] 347Çóµ÷¼Á +4 L when 2026-03-25 4/200 2026-03-25 13:37 by cocolv
[¿¼ÑÐ] 340Çóµ÷¼Á +5 »°Ã·ÌÇ111 2026-03-24 5/250 2026-03-25 06:53 by ilovexiaobin
[¿¼ÑÐ] 284Çóµ÷¼Á +3 yanzhixue111 2026-03-23 6/300 2026-03-23 22:58 by pswait
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û