| ²é¿´: 630 | »Ø¸´: 1 | |||
| ±¾Ìû²úÉú 1 ¸ö ·ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴 | |||
xpz-wdyÒø³æ (ÕýʽдÊÖ)
|
[ÇóÖú]
Çó´óÉñÈóɫһ¶Î×Ô¼º·ÒëµÄÓ¢ÎÄ
|
||
|
Çó´óÉñÈóɫһ¶ÎÓ¢ÎÄ Â±»¯¶¡»ù½ºÊǺôÎüÆ÷ÕÖÌå²ÄÁϵÄÊ×Ñ¡£¬ÆäÓÅÁ¼µÄ×è¸ôÐÔÄÜÔ´×ÔÒì¶¡Ï©Á´½ÚÖÐÃܼ¯²à¼×»ùÄܹ»ÓÐЧ×èÖ¹ÆäËüС×ÓµÄÈÈÔ˶¯£¬µ«Ãܼ¯²à¼×»ùËù²úÉúµÄ½Ï´óÄÚĦ²ÁËðºÄÒ²½«µ¼Ö²ÄÁϵĵͻص¯ÐÔ£¬²¢¸øºôÎüÆ÷µÄÉú²úºÍʹÓôøÀ´²»ÀûÓ°Ïì¡£²ÉÓÃNRÓë±»¯¶¡»ù½º½øÐй²»ì¿ÉÌá¸ß²ÄÁϵĻص¯ÐÔ£¬µ«Í¬Ê±Ò²½«ÒÔÎþÉü²¿·Ö×è¸ôÐÔÄÜΪ´ú¼Û£¨ÒòΪNR¶Ô»¯Ñ§ÊÔ¼ÁµÄ×è¸ôÐÔÄܽϵͣ©¡£ Halobutyl rubber is the main choice of the faceblank materials for respirators due to the good barrier property originated from the dense side methyl groups in the predominant isobutylene units which can effectively prevent other molecules from thermal motion. However, great internal friction originated from the methyl groups will also result in low resilience, and finally bring disadvantages to respirators during its manufacture and usage. Blending with NR is an alternative way to improve the resilience. Unfortunately, it will decrease the resistance of the blend unavoidably due to the NR offers rather low resistances to the penetration of chemicals. ÓÉÓÚ²ÄÁϵÄ×è¸ôÐÔÄÜÓëÉøÍ¸¼ÁÔÚ²ÄÁÏÄÚ²¿µÄÀ©É¢ÐÐΪÃÜÇÐÏà¹Ø£¬±¾ÏîÄ¿Ä⿪չ¸öÌå·À»¤ÁìÓò³£ÓõÄÄ¿±ê¶¾¼Á-½æ×ÓÆøÔÚCIIR/NR¹²»ìÌåϵÖеÄÀ©É¢ÐÐΪÑо¿£¬»ùÓÚFickµÚ¶þ¶¨Âɺͱã׼մȾ-Ô²ÅÌ´©Í¸Ê±¼ä²âÊÔ·½·¨½¨Á¢ÏàÓ¦µÄ·ÇÎÈ̬À©É¢·½³Ì£¬»ùÓÚ¶¯Ì¬Îü¸½·ÖÎöºÍËæ»úÐÐ×ßÀíÂÛÏà½áºÏµÄ·½·¨¶ÔÆäÀ©É¢»úÀí½øÐÐÑо¿£¬²¢Ñо¿¹²»ìÌåϵ×é³É½á¹¹¼°ÎÂ¶È¶ÔÆäÀ©É¢ÐÐΪµÄÓ°Ïì¹æÂÉ¡£¸ÃÏîÄ¿µÄ¿ªÕ¹¿ÉÒÔΪδÀ´ÕÖÌå²ÄÁϵÄÉè¼ÆÌṩ±ØÒªµÄ¼¼Êõ²ÎÊý¼°ÀíÂÛÒÀ¾Ý¡£ Since the barrier property is depended on the diffusion behavior of permeant in material, the sulfur mustard, a target permeant commonly used in personal protection field, through the blends of CIIR and NR will be studied in this project. The unsteady diffusion equations will be obtained based on Fick¡¯s second law and standard spot-disc breakthrough time test, the diffusion mechanism will be interpreted based on the combination of dynamic adsorption analysis and random walk theory, and the influence of structure and temperature on the diffusion behavior will be also investigated. This study will provide necessary parameters and theoretical basis for future material design for faceblanks. |
» ²ÂÄãϲ»¶
²ÄÁÏÓ뻯¹¤µ÷¼Á
ÒѾÓÐ27È˻ظ´
Ò»Ö¾Ô¸211£¬»¯Ñ§310·Ö£¬±¾¿ÆÖصãË«·Ç£¬Çóµ÷¼Á
ÒѾÓÐ20È˻ظ´
Çóµ÷¼Á
ÒѾÓÐ17È˻ظ´
277 ÊýÒ»104£¬Ñ§Ë¶£¬Çóµ÷¼Á
ÒѾÓÐ16È˻ظ´
²ÄÁÏÀà284µ÷¼Á
ÒѾÓÐ44È˻ظ´
295·ÖÇóµ÷¼Á
ÒѾÓÐ4È˻ظ´
Ò»Ö¾Ô¸Î÷±±¹¤Òµ´óѧ289 085602
ÒѾÓÐ29È˻ظ´
272·Ö²ÄÁÏ×ÓÇóµ÷¼Á
ÒѾÓÐ27È˻ظ´
ÖпÆÔº×Ü·Ö315Çóµ÷¼Á
ÒѾÓÐ8È˻ظ´
²ÄÁϹ¤³Ì085601£¬270Çóµ÷¼Á
ÒѾÓÐ30È˻ظ´

ssssllllnnnn
ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)
Translator and Proofreader
- ·ÒëEPI: 1690
- Ó¦Öú: 452 (˶ʿ)
- ½ð±Ò: 31580.9
- ºì»¨: 100
- Ìû×Ó: 7681
- ÔÚÏß: 19966.6Сʱ
- ³æºÅ: 3328089
- ×¢²á: 2014-07-17
- רҵ: Ö×Áö·¢Éú
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï ¡ï
xpz-wdy: ½ð±Ò+20, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл´óÉñ 2016-01-27 12:28:45
xpz-wdy: ½ð±Ò+20, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, лл´óÉñ 2016-01-27 12:28:45
|
ÄãÕâÊÇÂÛÎÄ»¹ÊDZêÊ飿ÊÇÂÛÎľͲ»Óý«À´Ê±ÁË¡£ÒòΪ²»È·¶¨£¬ËùÒÔʱ̬¾Í²»¸ÄÁË£º Halobutyl rubber is the main choice of the faceblank materials for respirators due to the good barrier property originated from the dense side methyl groups in the predominant isobutylene units which can effectively prevent other molecules from thermal motion. However, great internal friction originated from the methyl groups will also result in low resilience, and finally bring disadvantages to respirators during its manufacture and usage. Blending with NR is an alternative way to improve the resilience. Unfortunately, it will decrease the resistance of the blend unavoidably due to ¡¾due to ²»ÄÜÒýµ¼´Ó¾ä£¬ ¸ÄΪ because »òÕß since¡¿ the NR offers rather low resistances to the penetration of chemicals. Since the barrier property is depended¡¾¸ÄΪdependent¡¿ on the diffusion behavior of permeant in material, the sulfur mustard, a target permeant commonly used in personal protection field,¡¾¶ººÅÈ¥µô¡¿ through the blends of CIIR and NR will ¡¾Èç¹ûÊÇÂÛÎľͲ»Óý«À´Ê±ÁË£¬ÏÂͬ¡¿be studied in this project. The unsteady diffusion equations will be obtained based on Fick¡¯s second law and standard spot-disc breakthrough time test, the diffusion mechanism will be interpreted based on the combination of dynamic adsorption analysis and random walk theory, and the influence of structure and temperature on the diffusion behavior will be also investigated. This study will provide necessary parameters and theoretical basis for future material design for faceblanks. |
2Â¥2016-01-27 09:08:44













»Ø¸´´ËÂ¥