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wanghui001
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- ³æºÅ: 2570686
- ×¢²á: 2013-07-29
- ÐÔ±ð: MM
- רҵ: ÊÞÒ½Ò©ÀíѧÓë¶¾Àíѧ
9Â¥2013-12-04 17:41:16
wanghui001
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 5 (Ó×¶ùÔ°)
- ½ð±Ò: 1767.2
- É¢½ð: 87
- ºì»¨: 6
- Ìû×Ó: 163
- ÔÚÏß: 162Сʱ
- ³æºÅ: 2570686
- ×¢²á: 2013-07-29
- ÐÔ±ð: MM
- רҵ: ÊÞÒ½Ò©ÀíѧÓë¶¾Àíѧ
2Â¥2013-12-04 11:53:26
liuruojin
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- ³æºÅ: 2065421
- ×¢²á: 2012-10-16
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- רҵ: ·ÖÎöÒÇÆ÷ÓëÊÔ¼Á

3Â¥2013-12-04 14:29:58
sunmy85
ľ³æ (ÕýʽдÊÖ)
- Ó¦Öú: 31 (СѧÉú)
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- ×¢²á: 2008-09-22
- רҵ: ¼¤¹â
¡¾´ð°¸¡¿Ó¦Öú»ØÌû
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Ŀǰ»¹Ã»Óб»SCI¼ìË÷¡£µ«¿ÉÒÔÔÚweb of knowledge²éѯ¡£´Ó·¢±íµ½±»SCI¼ìË÷ÐèÒªÒ»¶Îʱ¼ä¡£Ä¿Ç°ÄãµÚ¶þƪÎÄÕµÄÏêϸÐÅÏ¢ÈçÏ£¬»¹Ã»ÓÐSCI¼ìË÷ºÅ£¬Ö»ÊÇÓÐÒ»¸öÀàËÆµÄºÅÂ룺Èë²ØºÅ: CCC:000326767500041¡£ÇëÂ¥Ö÷Ôٵȵȡ£ Synthesis and thermal properties of a novel high temperature alkyl-center-trisphenolic-based phthalonitrile polymer ×÷Õß: Sheng, HT (Sheng, Haitong)[ 1 ] ; Peng, XG (Peng, Xuegang)[ 1 ] ; Guo, H (Guo, Hui)[ 1 ] ; Yu, XY (Yu, Xiaoyan)[ 1 ] ; Tang, CC (Tang, Chengchun)[ 2 ] ; Qu, XW (Qu, Xiongwei)[ 1 ] ; Zhang, QX (Zhang, Qingxin)[ 1 ] À´Ô´³ö°æÎï: MATERIALS CHEMISTRY AND PHYSICS ¾í: 142 ÆÚ: 2-3 Ò³: 740-747 ³ö°æÄê: NOV 15 2013 ÕªÒª: A novel alkyl-center-trisphenolic-based high-temperature phthalonitrile monomer, namely, 1,1,1-tris-[4(3,4-dicyanophenoxy)phenyl]ethane (TDPE), was synthesized from 1,1,1-tris-(4-hydroxyphenyl)ethane (THPE) via a facile nucleophilic displacement of a nitro-substituent from 4-nitrophthalonitrile (NPN). The structure of TDPE monomer was characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance spectroscopy (H-1 and C-13 NMR), elemental analysis (EA). Curing behaviors of TDPE with 4-(aminophenoxy)phthalonitrile (APPH) were recorded by differential scanning calorimetric (DSC) and it showed a large processing window (122 degrees C) which is favorable to processing TDPE polymers. The structure of TDPE polymer was discussed and the thermal stabilities of TDPE polymer were evaluated by thermogravimetric analysis (TGA). The TDPE polymer exhibits excellent thermal stability, and mechanism of thermal decompositions was explored. Dynamic mechanical analysis (DMA) revealed that the TDPE polymer has high storage modulus and high glass transition temperature (T-g > 380 degrees C). (C) 2013 Elsevier B.V. All rights reserved. Èë²ØºÅ: CCC:000326767500041 ÎÄÏ×ÀàÐÍ: Article ÓïÖÖ: English ×÷Õ߹ؼü´Ê: Polymers; Chemical synthesis; Differential scanning calorimetry (DSC); Fourier transform infrared spectroscopy (FTIR); Thermal properties KeyWords Plus: MODEL COMPOUNDS; BEHAVIOR; RESINS; PHTHALOCYANINES; POLYIMIDE; MONOMERS; PYRROLE ͨѶ×÷ÕßµØÖ·: Yu, Xiaoyan (ͨѶ×÷Õß),Hebei Univ Technol, Sch Chem Engn & Technol, Inst Polymer Sci & Engn, Tianjin 300130, Peoples R China µØÖ·: [ 1 ] Hebei Univ Technol, Sch Chem Engn & Technol, Inst Polymer Sci & Engn, Tianjin 300130, Peoples R China [ 2 ] Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China µç×ÓÓʼþµØÖ·: xyanyu@gmail.com, zhqxcn@163.com ³ö°æÉÌ: ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND, http://www.elsevier.nl ѧ¿Æ: APPLIED PHYSICS/CONDENSED MATTER/MATERIALS SCIENCE MATERIALS SCIENCE & ENGINEERING Ñо¿·½Ïò: Materials Science; Physics; Engineering CC ר¼/ºÏ¼¯: Physical, Chemical & Earth Sciences (PCES); Engineering, Computing & Technology (ECT) ISI ÎÄÏ×´«µÝºÅ: 249HE ISSN: 0254-0584 |
4Â¥2013-12-04 14:47:35













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