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genhunter
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ÖìÑÒ0308: ½ð±Ò+35, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-05-29 16:58:42
ÖìÑÒ0308: ½ð±Ò+35, ·ÒëEPI+1, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸ 2015-05-29 16:58:42
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Synthesis of Asymmetric Cyclotriphosphazene-Benzoxazine Monomer Abstract ÁùÂÈ»·ÈýÁ×ëæ»¯ºÏÎïÊÇÒ»ÀàÄÍÈÈ×èȼÐÔÄÜÓÅÁ¼µÄÔÓ»·»¯ºÏÎÿ¸öÁ×ÉÏÃæÁ¬½ÓÁ½¸öÂÈÔ×Ó£¬Æäº¬Á×Á¿Ïà¶Ô½Ï¸ß£¬ÕâҲʹµÃËüÏàÓ¦µÄÑÜÉúÎï¾ßÓÐÓÅÒìµÄ×èȼÐÔºÍÈÈÎȶ¨ÐÔ¡£¶ø±½²¢‡fàºÊ÷Ö¬ÊÇÔÚ´«Í³µÄÊ÷Ö¬»ù´¡ÉÏ·¢Õ¹ÆðÀ´µÄÒ»ÖÖÐÂÐÍÀà·ÓÈ©Ê÷Ö¬¡£Ëü²»µ«¼Ì³ÐÁË´«Í³Ê÷Ö¬µÄÄÍÈÈ¡¢×èȼµÈÓŵ㣬×ÔÉí»¹¾ßÓд«Í³·ÓÈ©Ê÷Ö¬Ëù²»¾ßÓеÄÐÔÄÜ£¬È磺Ìå»ýÁãÊÕËõ¡¢¹Ì»¯²»Ðè´ß»¯¼Á¡¢±ãÓÚ¼Ó¹¤³ÉÐͼ°Áé»îµÄ·Ö×ӽṹÉè¼ÆµÈ£¬¾ßÓÐÁ¼ºÃÓ¦ÓÃǰ¾°¡£±¾ÎÄͨ¹ýÏòÁ×ëæ»·ÉÏÒýÈ벿·Ö‡fຽṹ£¬ÒâÓûÌá¸ßÔÓÐÁùÂÈ»·ÈýÁ×ëæµÄ×èȼºÍÄÍÈÈÐÔ¡£Hexachloro cyclotriphosphazene (HCC) are heterocyclic compounds with excellent heat-resistant and flame-retardant properties. In HCC each phosphorus is connected with two chlorine; its phosphorus content is relatively high, which provides its derivatives with excellent flame retardant properties and thermal stability. Benzoxazine resin is a new phenol formaldehyde resin (phenolic resin) evolved from the traditional resin. It not only has the heat-resistant, fire-retardant and other features, it also has its unique properties that traditional phenolic resins do not have, such as: no shrinkage, can be cured without a catalyst, ease to be processed to desired shapes and the flexibility in the design of molecular structures. It therefore has an excellent prospects in applications. In this paper, we introduced a portion of benzoxazine structure to the phosphazene ring in order to improve the flame retardant and heat resistance properties of the original HCC. ±¾ÊµÑéÏÈÒÔÁùÂÈ»·ÈýÁ×ëæºÍ2,2¡¯-Áª±½·ÓΪÔÁϺϳÉT1£¬ºóÓö԰±»ù±½·ÓºÍË®ÑîÈ©ºÏ³Éº¬ÓÐC=N½á¹¹µÄÖмäÌå£¬ËæºóÀûÓÃNaBH4½«C=NË«¼ü»¹Ô£¬È»ºóÔÚ1,4-¶þÑõÁù»·ÈÜÒºÖмÓÈë¶à¾Û¼×È©»ØÁ÷£¬Ê¹ÆäÉú³Éº¬ÓзÓôÇ»ùµÄ±½²¢‡fີ¥ÌåC3¡£×îºóÔÚ1,4-¶þÑõÁù»·ÌåϵÖн«T1ÓëC3·¢ÉúÇ׺ËÈ¡´ú·´Ó¦¡£·Ö±ðÀûÓÃͨ¹ýFI-IR¡¢1H NMRºÍ31P NMR¶ÔËùºÏ³É»¯ºÏÎï½á¹¹½øÐÐÁ˱íÕ÷¡£ Staring from HCC and 2,2'-Biphenol as the raw materials, we first synthesized the intermediate T1, then, from p-aminophenol and salicylaldehyde, we initially synthesized a C=N containing Schiff¡¯s base intermediate, followed reduction using NaBH4 to reduced the C=N double bond, then treated with containing in 1,4-dioxane under reflux to generate phenolic hydroxyl-containing benzoxazine monomer C3. Finally, the substitution reaction of T1 and C3 were reacted in1,4-dioxane . The structures of the synthesized compounds were characterized by FI-IR, NMR 1H and NMR 31P, respectively.. Keywords: hexachloro cyclotriphosphazene, benzoxazine, synthesis, heat resistant, flame retardant |

7Â¥2015-05-29 16:15:33
sdcavell
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2Â¥2015-05-29 06:37:43
mswyzu
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4Â¥2015-05-29 11:16:42
genhunter
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- רҵ: Ö×Áö»¯Ñ§Ò©ÎïÖÎÁÆ

5Â¥2015-05-29 12:59:55













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