| ²é¿´: 954 | »Ø¸´: 2 | |||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | |||
peixl999ľ³æ (ÕýʽдÊÖ)
|
[½»Á÷]
Çó°ïæÐÞ¸ÄÒ»¸ö¾ä×Ó
|
||
|
ÏÂÃæÊÇÎÒдµÄÒ»¶ÎÓ¢Îľä×Ó£¬×ܸоõ²»ÊǺܺã¬ÇóÖú¸ßÊÖ°ïÎÒ°ÑÏÂÃæµÄÓ¢Îľä×ÓÐÞ¸Äһϣ¨ÖÐÎĵÄÒâ˼ҲÔÚÏÂÃæ£©£¬Ð»Ð»ÁË ÖÐÎĵÄÒâ˼ÊÇ£ºº¬¹èÑõÍéµÄ¾Ûõ£°·ËáÖмäÌåAÊÇÔÚ»ìºÏÈܼÁTHF/NMPÖкϳɵġ£ÕâÊÇÒòΪ¶Ôº¬¹èÑõÍéµÄ¾Ûõ£Ñǰ·À´Ëµ£¬»ìºÏÈܼÁµÄʹÓöԱ£³Ö·´Ó¦Îï´¦ÓÚ¾ùÏàµÄ״̬ºÍ»ñµÃ¸ß·Ö×ÓÁ¿µÄ¹²¾ÛÎïÊǺÜÓÐÀûµÄºÍ¹Ø¼üµÄ¡£ The poly(siloxane amic acid) intermediate A was synthesized in a mixture of THF/NMP. Because for siloxane-containing polyimide, the utilization of cosolvents was found to be advantageous and critical to maintain the homogeneous nature of the reactants and obtain high molecular weight copolymers. |
» ²ÂÄãϲ»¶
346Çóµ÷¼Á[0856]
ÒѾÓÐ7È˻ظ´
һ־Ըɽ´ó07»¯Ñ§ 332·Ö ËÄÁù¼¶Òѹý ±¾¿ÆÉ½¶«Ë«·Ç Çóµ÷¼Á£¡
ÒѾÓÐ3È˻ظ´
310Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
»úеר˶299Çóµ÷¼ÁÖÁ²ÄÁÏ
ÒѾÓÐ4È˻ظ´
070300»¯Ñ§319Çóµ÷¼Á
ÒѾÓÐ7È˻ظ´
08¹¤¿Æ 320×Ü·Ö Çóµ÷¼Á
ÒѾÓÐ6È˻ظ´
Ò»Ö¾Ô¸Ìì½ò´óѧ»¯Ñ§¹¤ÒÕרҵ£¨081702£©315·ÖÇóµ÷¼Á
ÒѾÓÐ12È˻ظ´
307Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
265Çóµ÷¼Á
ÒѾÓÐ3È˻ظ´
301Çóµ÷¼Á
ÒѾÓÐ10È˻ظ´

sdqzsdqz
ľ³æ (ÖøÃûдÊÖ)
- ·ÒëEPI: 66
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ¹ó±ö: 0.005
- ½ð±Ò: 4661.8
- É¢½ð: 443
- ºì»¨: 1
- Ìû×Ó: 1737
- ÔÚÏß: 179.6Сʱ
- ³æºÅ: 839254
- ×¢²á: 2009-09-03
- רҵ: Ö×Áö·¢Éú
peixl999(½ð±Ò+5, ·ÒëEPI+1): 2010-09-06 15:38:30
| The poly(siloxane amic acid) intermediate A was synthesized in a mixture of THF/NMP. As for siloxane-containing polyimide, the utilization of cosolvents was found to be advantageous and critical to maintain the homogeneous nature of the reactants and obtain high molecular weight copolymers. |
2Â¥2010-09-06 15:35:00
ÕÅ´óС
гæ (³õÈëÎÄ̳)
- ·ÒëEPI: 1
- Ó¦Öú: 0 (Ó×¶ùÔ°)
- ½ð±Ò: 16
- Ìû×Ó: 17
- ÔÚÏß: 5Сʱ
- ³æºÅ: 1087375
- ×¢²á: 2010-09-02
¸öÈËÒâ¼û¹þ¡¤~~½ö¹©²Î¿¼
peixl999(½ð±Ò+5): 2010-09-06 20:49:44
| Polyamide acid intermediate A contained siloxane is synthesized in the mixed solventTHF/NMP.That is because it is benifit and crucial for the usage of the mixed solvent ,which can maintain the homogeneous phase conditions of reactants and obtain high molecular weight copolymers. |
3Â¥2010-09-06 15:59:24













»Ø¸´´ËÂ¥