full2010.pdf - page 1431

1393
P43
„µ¦ª·Á‡¦µ³®rÁ·Š‡ªµ¤¦o °œ °Š—·œ µª¦³œ°Š —·œ µªœ¦µ›·ªµÂ¨³—·œ—εœ‡¦«¦¸›¦¦¤¦µ
—oª¥Áš‡œ· ‡„µ¦ª·Á‡¦µ³®r Áš°¦r䄦µª·Á¤˜¦¸ ¨³„µ¦ª·Á‡¦µ³®r‡ªµ¤¦o °œÁ·Š°œ»¡´œ›r
Thermal Analysis of Ranong Kaolin, Narathiwas Kaolin and Nakhon Si Thammarat Ballclay
with Differential Thermal Analysis (DTA) and Thermogravimetry Analysis (TGA)
Techniques
¦¼±´¥Žµ —º°¦µÂ¤1 ž¦³Š‡r Á„¬¦µ›·‡»–2 ¨³ž¦³·˜ ‡Š¦´˜œr 3
Ruhaisa Dearamae 1, Prasong Kessaratikoon2 and Prachit Khongratana3
š‡´—¥n°
Šµœª· ‹´¥œ¸ÊÁž} œ„µ¦«¹ „¬µ„µ¦ª·Á‡¦µ³®rÁ· Š‡ªµ¤¦o°œ °Š—·œ µª¦³œ°Š —·œ µªœ¦µ›· ªµ ¨³—·œ—Î µ
œ‡¦«¦¸›¦¦¤¦µ ¤¸ ‹»—ž¦³Š‡rÁ¡ºÉ°«¹„¬µ°»–®£¼¤·š¸ÉÁ®¤µ³¤˜n°„µ¦ÁŸµ˜´ ª°¥nµŠ—·œ µªÂ¨³—·œ—ε ×¥šÎµ„µ¦š—°
˜´ª°¥nµŠš¸É°»–®£¼¤· 50 – 1,000 oC £µ¥Ä˜o¦¦¥µ„µ« N2 ¤¸°´˜¦µ„µ¦ ¹Ê œ¨Š °Š°»–®£¼¤·š¸É 10 oC/min «¹„¬µ„µ¦¼Á¸¥
¤ª¨—oª¥Áš‡œ·‡„µ¦ª· Á‡¦µ³®rÁš°¦r䄦µª· Á¤˜¦¸ (Thermogravimetry Analysis : TGA) ¨³„µ¦Áž¨¸É¥œÁ¢
(Phase) —oª¥Áš‡œ·‡„µ¦ª·Á‡¦µ³®r‡ªµ¤¦o °œÁ·Š°œ»¡´ œ›r (Differential Thermal Analysis : DTA) Ÿ¨‹µ„„µ¦š—¨°Š
¡ªnµ —·œ µª¦³œ°ŠÁ„· —ž’·„·¦·¥µ—¼—‡ªµ¤¦o°œš¸É °»–®£¼¤· 475.13 – 514.53 oC ¤¸ 'H = 1.66 kJ/g Á„·—ž’·„·¦·¥µ‡µ¥
‡ªµ¤¦o °œš¸É°»–®£¼¤· 991.14 – 1001.12 oC ¤¸ 'H = 0.29 kJ/g ¨³š¸É°»–®£¼¤· 467.74 oC ¤ª¨¨—¨Šž¦³¤µ– 12.55%
宦´ —·œ µªœ¦µ›·ªµ Á„·—ž’·„·¦·¥µ—¼ —‡ªµ¤¦o°œš¸É°»–®£¼¤· 467.77 – 504.97 oC ¤¸ 'H = 1.99 kJ/g Á„·—ž’·„·¦·¥µ‡µ¥
‡ªµ¤¦o °œš¸É°»–®£¼¤· 983.08 – 999.02 oC ¤¸ 'H = 0.30 kJ/g ¨³š¸É °»–®£¼¤· 466.27 oC ¤ª¨¨—¨Šž¦³¤µ–11.76%
宦´—·œ—Î µœ‡¦«¦¸›¦¦¤¦µ Á„·—ž’·„·¦·¥µ—¼—‡ªµ¤¦o°œš¸É °»–®£¼¤· 453.73 – 465.63 oC ¤¸ 'H = 1.45 kJ/g
Á„·—ž’·„·¦·¥µ‡µ¥‡ªµ¤¦o°œš¸É °»–®£¼¤· 960.04 – 967.24 oC ¤¸ 'H = 0.36 kJ/g ¨³š¸É°»–®£¼¤· 39.33, 418.95 ¨³
751.29 oC ¤¸¤ª¨¨—¨Šž¦³¤µ– 3.47%, 8.99% ¨³ 1.85% ˜µ¤¨Îµ—´
‡ÎµÎµ‡´ ǣ —·œ µª¦³œ°Š —·œ µªœ¦µ›·ªµ—·œ—εœ‡¦«¦¸›¦¦¤¦µ DTA TGA Á°œš´¨že ( 'H)
1 œ· ·˜¦³—´ž¦·µÃš ®¨´„¼˜¦ªš.¤ (¢d ·„r) µ µª·µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª·š¥µ¨´¥š´„¬·– °. Á¤º°Š ‹. Š ¨µ 90000
Graduate Student, Department of Physics, Faculty of Science, Thaksin University, Songkla, 90000, Thailand.
2 °µ‹µ¦¥rž¦³‹Îµ µ µª·µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª·š¥µ¨´¥š´„¬·– Š ¨µ 90000
3 °µ‹µ¦¥rž¦³‹Îµ µ µª·µ¢d ·„r ‡–³ª·š¥µ«µ˜¦r ¤®µª·š¥µ¨´¥š´„¬·– Š ¨µ 90000
Corresponding author : Ú¦«´ ¡šr/Ú¦µ¦ 074-443-950 Email: prachit@tsu.ac.th.