Znn3bq.jpeg
²é¿´: 630  |  »Ø¸´: 1
±¾Ìû²úÉú 1 ¸ö ·­ÒëEPI £¬µã»÷ÕâÀï½øÐв鿴

xpz-wdy

Òø³æ (ÕýʽдÊÖ)

[ÇóÖú] Çó´óÉñÈóɫһ¶Î×Ô¼º·­ÒëµÄÓ¢ÎÄ

Çó´óÉñÈóɫһ¶ÎÓ¢ÎÄ

±»¯¶¡»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»¶

×Ýʹ¿à±ÆÉú»î£¬Ò²²»ÄÜÂúÉí¸ºÄÜÁ¿¡­¡­
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

ssssllllnnnn

ÖÁ×ðľ³æ (ÖªÃû×÷¼Ò)

Translator and Proofreader


¡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
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
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
Ïà¹Ø°æ¿éÌø×ª ÎÒÒª¶©ÔÄÂ¥Ö÷ ѧԱpkTfyR µÄÖ÷Ìâ¸üÐÂ
×î¾ßÈËÆøÈÈÌûÍÆ¼ö [²é¿´È«²¿] ×÷Õß »Ø/¿´ ×îºó·¢±í
[¿¼ÑÐ] 346£¬¹¤¿Æ0854Çóµ÷¼Á£¬×¨Ë¶ +5 moser233 2026-04-10 6/300 2026-04-10 18:04 by ÖÜÉÛÑô
[¿¼ÑÐ] ±¾¿Æ211 ¹¤¿Æ085400 280·ÖÇóµ÷¼Á ¿É¿çרҵ +9 LZH£¨µÈ´ýµ÷¼ÁÖÐ 2026-04-10 9/450 2026-04-10 15:12 by hemengdong
[¿¼ÑÐ] Çóµ÷¼Á +9 ôæôæÒ»ÊéÉú 2026-04-09 9/450 2026-04-10 11:43 by wp06
[¿¼ÑÐ] 080100Á¦Ñ§316Çóµ÷¼Á +7 L_Hairui 2026-04-07 7/350 2026-04-10 09:45 by vgtyfty
[¿¼ÑÐ] ¿¼Ñе÷¼Á-²ÄÁÏÀà-284 +28 Ïë»»ÊÖ»ú²»Ïë½âÊ 2026-04-08 28/1400 2026-04-09 20:08 by µ¹Êý321?
[¿¼ÑÐ] Ò»Ö¾Ô¸ÏôóÉúÎïѧ332Çóµ÷¼Á +10 ³Ø³Ø³Ø³Ø³Ø³Ø 2026-04-08 10/500 2026-04-09 17:10 by ¶À×íÃι³Ç
[¿¼ÑÐ] 0860004 Çóµ÷¼Á 309·Ö +7 Yin DY 2026-04-08 7/350 2026-04-09 14:06 by ditto77778
[¿¼ÑÐ] Çóµ÷¼Á£¬262»úеר˶ +6 àÅyyl 2026-04-08 6/300 2026-04-09 12:01 by zhouyuwinner
[¿¼ÑÐ] 280Çóµ÷¼Á +5 ÙâÙâÒ¹Ò¹ 2026-04-09 8/400 2026-04-09 11:15 by ÙâÙâÒ¹Ò¹
[¿¼ÑÐ] ²ÄÁÏ307·ÖÇó´óÀÐ×éÊÕÁô +17 Hllºú 2026-04-07 17/850 2026-04-09 10:53 by liuhuiying09
[¿¼ÑÐ] Ò»Ö¾Ô¸0807 ÊýÒ»Ó¢Ò» 313 ÓÐûÓжþÂÖµ÷¼Á +11 emokidd 2026-04-08 12/600 2026-04-09 09:24 by wyf236
[¿¼ÑÐ] Çóµ÷¼Á +7 chenxrlkx 2026-04-05 9/450 2026-04-09 09:04 by wj165256
[¿¼ÑÐ] »¯Ñ§308·ÖÇóµ÷¼Á +21 ÄãºÃÃ÷ÌìÄãºÃ 2026-04-07 23/1150 2026-04-08 22:32 by ¿­¿­Òª±ä˧
[¿¼ÑÐ] 316Çóµ÷¼Á +4 15318418673 2026-04-07 4/200 2026-04-07 22:12 by hemengdong
[¿¼ÑÐ] ÉúÎ﹤³ÌÇóµ÷¼Á +13 ϲ»¶»¹ÊDz»¸ÊÐÄ 2026-04-05 13/650 2026-04-07 16:55 by Ecowxq666£¡
[¿¼ÑÐ] ²ÄÁϵ÷¼Á +11 Ò»ÑùYWY 2026-04-07 11/550 2026-04-07 15:13 by shdgaomin
[¿¼ÑÐ] 334·Ö»úеר˶Çóµ÷¼Á +3 µ°»¨×ϲËÌÀ 2026-04-03 3/150 2026-04-07 14:49 by åÐÒ£cocoa
[¿¼ÑÐ] 081200-11408-367ѧ˶Çóµ÷¼Á +4 1_2_3111 2026-04-06 4/200 2026-04-07 08:13 by jp9609
[¿¼ÑÐ] Ò»Ö¾Ô¸ËÕÖÝ´óѧ²ÄÁϹ¤³Ì£¨085601£©×¨Ë¶ÓпÆÑо­ÀúÈýÏî¹ú½±Á½¸öʵÓÃÐÍרÀûÒ»ÏîÊ¡¼¶Á¢Ïî +11 ´ó»ðɽС»ðɽ 2026-04-05 11/550 2026-04-06 22:55 by yunlongyang
[¿¼ÑÐ] µ÷¼Á Ò»Ö¾Ô¸¼ªÁÖ´óѧ357·Ö +5 .Starry. 2026-04-04 5/250 2026-04-06 09:28 by cql1109
ÐÅÏ¢Ìáʾ
ÇëÌî´¦ÀíÒâ¼û