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¡¾Ó¢ÎÄÆªÃû¡¿ Purification of MMA for POF and its decontamination of end gas
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¡¾Ó¢ÎÄ×÷Õß¡¿ XU Siª²hua; ZHANG Xiaoª²jing; XU Chuanª²xiang; ZHANG Jiª²yuan £¨Xi'an Jiaotong University; Xi'an 710049; Shaanxi; China£©ª¥;
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¡¾Ó¢ÎĹؼü´Ê¡¿ POF; methyl methacrylate; polymerization initiator; vacuum distillation; condensation;
¡¾ÕªÒª¡¿ ¡¡½éÉÜÁ˾ۺÏÎï¹âÏ˳£ÓòÄÁϼ׻ù±ûÏ©Ëá¼×õ¥(MMA)ºÍ¼¸ÖÖÒý·¢¼ÁµÄ¾«ÖÆ·½·¨,²¢Í¨¹ýʵÑéºÍ·ÖÎö,Ìá³öÁËMMAµ¥Ì徫֯µÄ½Ï¼Ñ·½°¸¡£¶ÔMMA¾«ÖÆÎ²Æø½øÐо»»¯´¦Àí,¼ÓÇ¿¶ÔÕôÆûµÄÀäÄý,²¢ÓÃNa2S2O8ÈÜÒººÍÒÒ´¼ÎüÊÕ²ÐÓàÎ²Æø,MMAÊÕ¼¯Âʿɴï95%ÒÔÉÏ,ÓÐЧ½â¾öÎ²ÆøµÄÎÛȾÎÊÌâ¡£
¡¾Ó¢ÎÄÕªÒª¡¿ The purification methods for methyl methacrylate(MMA), which is commonly used in preparation of polymer optical fibers, and several polymerization initiators are introduced.A better method for purifying MMA is put forward. Decreasing the temperature of condensation water and adopting Naª­2Sª­2Oª­8 solution and alcohol as absorption agents are used to decontaminate the end gases from MMA distillation. The collection rate of MMA achieves more than 95%, and the pollution problem is effectively solved.ª¥
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