full2010.pdf - page 1348

1310
„µ¦Á˜¦¸¥¤¡°¨·¥¼¦¸ÁšœÃ¢¤ÂÂ Ȋ×¥«¹„¬µž’· „·¦·¥µ„µ¦Á„·—¡°¨·Á¤°Å¦ÁŽ´œ
„µ¦Á˜¦¸¥¤¡°¨· ¥¼¦¸ÁšœÃ¢¤ ¤¸ 2 ´Êœ˜°œ —´ Šœ¸Ê ´Êœ˜°œÂ¦„Ÿ¤ catalyst (mixed metal complex catalysts),
polyol (Raypol®4221), surfactant (B 8460) ¨³ blowing agent (H2O) Ä®oÁ oµ„´œÄœÂ¤n¡· ¤¡r ´Êœ˜°œš¸É °ŠÁ˜·¤
Polymeric diphenyl methane diisocyanate (PMDI) „ªœÄ®oÁ oµ„´œÁž}œÁª¨µ 20 ª·œµš¸ š¸É°´˜¦µÁ¦Èª 2000 rpm ‹µ„œ´Êœ
«¹„¬µÁª¨µš¸ÉčoĜ„µ¦Á„·—¡°¨·¥¼¦¸ÁšœÃ¢¤ Ž¹ÉŠÁª¨µš¸É œÄ‹¤¸ 4 n ªŠ ŗo„n Áª¨µš¸É µ¦Ÿ¤Á¦·É ¤Á„·—ž’·„·¦·¥µ (cream
time) Áª¨µš¸É µ¦Ÿ¤Áž}œÁ‹¨ (gel time) Áª¨µš¸É⤮¥» —ž’·„·¦·¥µ„µ¦¢¼ (rise time) ¨³Áª¨µš¸ÉŸ·ªÃ¢¤Å¤nÁ„µ³˜· —„´
ª´ —» ´¤Ÿ´ (tack free time) ×¥‹³«¹ „¬µÁš¸¥„´˜´ªÁ¦nŠž’·„·¦·¥µš¸ÉčoĜ°»˜µ®„¦¦¤ (DMCHA) ¨³¼˜¦š¸ÉčoĜ
„µ¦Á˜¦¸ ¥¤¡°¨·¥¼¦¸ÁšœÃ¢¤ÂÂ Ȋ —Š—´Š˜µ¦µŠš¸É 2 ®¨´ Š‹µ„â¤Á„·—ž’·„·¦·¥¤¼¦–r¨oª ‹µ„œ´ÊœœÎµÃ¢¤š¸Éŗo ¤µ
˜´— Á¡ºÉ°‡Îµœª–‡ªµ¤®œµÂœnœ˜µ¤ ASTM D1621-04
˜µ¦µŠš¸É 2 ¼˜¦š¸ÉčoĜ„µ¦Á˜¦¸¥¤¡°¨·¥¼¦¸ÁšœÃ¢¤ÂÂ Ȋ
Formulation (pbw) NCO Index 100
Raypol 4221; OH-number = 440 mgKOH/g; functionality = 4.3
Silicone surfactant (polysiloxane; Tegostab B8460)
H2O (Blowing agent)
Catalyst [Cu:Zn(pentaen), Cu:Co(pentaen) and Cu:Ni(pentaen)]
Polymeric diphenyl methane diisocyanate (PMDI) (MR-200); % NCO = 31.0;
functionality = 2.7)
100
25
31
12
151.8
Ÿ¨„µ¦ª·‹´¥Â¨³°£· ž¦µ¥Ÿ¨
„µ¦Á˜¦¸¥¤¡°¨·¥¼¦¸ÁšœÃ¢¤ÂÂ Ȋ ץčo ˜´ªÁ¦nŠž’·„·¦·¥µÁž} œµ¦ž¦³„°Á·ŠŽo°œ °ŠÃ¨®³Ÿ¤„´Â°
¤¸œ ‹³«¹„¬µÁª¨µš¸ÉčoĜ„µ¦Á„·—ž’·„·¦·¥µ¡°¨·Á¤°Å¦ÁŽ´œ—´Š˜µ¦µŠš¸É 3 ‹µ„„µ¦š—¨°Š¡ªnµÃ¢¤š¸ÉÁ˜¦¸¥¤Å—o‹µ„
˜´ªÁ¦nŠž’·„·¦·¥µš¸Éčo°´˜¦µnªœ¦³®ªnµŠÃ¨®³Ÿ¤„´Â°¤¸œÁž}œ 1:1 ץ䨵¤µ¦™Á¦nŠž’·„·¦·¥µ„µ¦Á„·—â¤Å—o—¸„ªnµ
°´˜¦µn ªœ 1:2 °µ‹ÁœºÉ°Š¤µ‹µ„„¨Å„„µ¦Á„·—ž‘·„·¦·¥µš¸É˜nµŠ„´œ‹¹ŠšÎµÄ®o°´˜¦µn ªœ 1:2 ¤¸ž’·„·¦·¥µ„µ¦Á„·—⤍o µ¨Š
Á¤ºÉ°´ŠÁ„˜Áª¨µÄœ„µ¦Á„·—⤡ªnµÃ¢¤š¸Éŗo‹µ„˜´ ªÁ¦nŠž’·„·¦·¥µ Cu:Zn(pentane), Cu:Co(pentaen) ¨³ Cu:Ni(pentaen)
čoÁª¨µÄœ„µ¦Á„·—ž’·„·¦·¥µš¸É tack free time Á¦Èª„ªnµ ˜´ªÁ¦nŠž’·„·¦·¥µš¸Éčo°oµŠ°·ŠÄœ°»˜µ®„¦¦¤ (DMCHA) °µ‹„¨nµª
ŗo ªnµ˜´ªÁ¦nŠž’·„·¦·¥µš´ÊŠ 3 œ·— µ¤µ¦™Á¦nŠž’·„·¦·¥µ„µ¦Á„·—â¤Å—o—¸„ªn µ˜´ªÁ¦nŠž’·„·¦·¥µ DMCHA ¨³˜´ªÁ¦nŠž’·„·¦·¥µ
š¸É œnµœÄ‹‡º ° Cu:Zn(pentaen), Cu:Co(pentaen) Ĝ°´˜¦µn ªœ 1:1 ¨³ Cu:Zn(pentaen) Ĝ°´˜¦µnªœ 1:2 Ž¹ÉŠÄo Áª¨µ
„µ¦Á„·—ž’·„·¦·¥µš¸É tack free time Á¦Èª„ªn µ rise time —ŠªnµÃ¢¤Á„· —ž’·„·¦·¥µ„µ¦ÁºÉ°¤ ªµŠµ¥ÃŽn ¡°¨·Á¤°¦rĜ¦³®ªnµŠ
ž’· „·¦·¥µ„µ¦¢¼š¸É¥´ŠÅ¤n®¥»—¨Š (¥´Š‡Š¤¸„pµŽ CO2 Á„·— ¹ÊœÄœ¦³) Ž¹ÉŠ‹³nª¥šÎµÄ®oâ¤Â Ȋ ¨³Å¤n¥»˜´ª