PESÀÇ Ä¡¼ö ¾ÈÁ¤¼º[Dimensional Stability of PES] |
Àå±âÀûº¯Çü[Long-term Deformation] |
Creep |
Go to the Mechanical Properties of PES |
¼± ÆØâ °è¼ö[Coefficient of Linear Expansion] |
PES´Â ¼± ÆØâ °è¼ö°¡ ÀÛ°í , ±× ¿Âµµ ÀÇÁ¸¼ºÀÌ ÀÛÀº °ÍÀÌ Æ¯Â¡ÀÔ´Ï´Ù. ±×¸²3¿¡ ¼± ÆØâ °è¼öÀÇ ¿Âµµ ÀÇÁ¸¼ºÀ» ³ªÅ¸³À´Ï´Ù.
°áÁ¤¼ºÀÇ °ÍPPS(GF40%) Àº ¿Âµµ »ó½Â°ú ÇÔ²² ¼± ÆØâ °è¼ö°¡ Ä¿Áý´Ï´Ù¸¸, ºñ°áÁ¤¼ºÀÇ PES´Â, ¿Âµµ¿¡ ÀÇÁ¸ÇÏÁö ¾Ê°í 200 ¡É ±îÁö ÀÏÁ¤ÇÑ °ªÀ» ³ªÅ¸³À´Ï´Ù. °Ô´Ù°¡ À¯¸® ¼¶À¯ °È Á¦Ç° 4101GL30Àº2.3¡¿10-5( ¡É-1)°ú ¾Ë·ç¹Ì´½¼öÁØÀÇ ³·Àº ¼±ÆØâ°è¼ö¸¦ °¡Áö¸ç, Á¤¹Ð ¼ºÇü¿¡ ÀûÀýÇÑ Àç·á¶ó°í ÇÒ ¼ö ÀÖ½À´Ï´Ù. |
Figure 1 ¼± ÆØâ °è¼öÀÇ ¿Âµµ ÀÇÁ¸¼º[Temperature dependability of a coefficient of linear expansion] |
¼ºÇü¼öÃà·ü[Mold Shrinkage] |
PESÀÇ ¼ºÇü ¼öÃàÀ²Àº ºñ°ÈÇ°À¸·Î0.6%°ú ÀÛ°í , ÇÑÆí À̹漺ÀÌ ¾ø½À´Ï´Ù.
À¯¸® ¼¶À¯ °È ±×·¹À̵å´Â MD¹æÇâ 0.2%, TD¹æÇâ 0.4%°ú À̹漺À» °¡Áý´Ï´Ù. |
Figure 2 ¼ºÇü¼öÃà·üºñ±³[Mold Shrinkage Comparison] |
Èí¼ö¿¡ ÀÇÇÑ Ä¡¼ö º¯È[Dimensional Changes Due to Water Absorption] |
PES´Â Èí¼ö¼ºÀÌ ÀÖ¾î , ¼ºÇü Á÷ÈÄÀÇ ºÎÇ°Àº ,1.1%ÀÇ Èí½À¿¡ ÀÇÇÑ Ä¡¼ö º¯È´Â Æ÷È »óÅÂ(1.1%) ·Î0.15%°ú ÀÛÀº °ªÀÔ´Ï´Ù. |
Figure 3 Ä¡¼ö º¯ÈÀÇ Èí¼öÀ² ÀÇÁ¸¼º[Water Absorption Dependence of Dimensional Changes] |