Synthesize And Application Of Bisphenol Fluorene Epoxy Resin

By the end of 20th, people all over the world had been cognizant of the harm of lead in human body distinctly. The WEEE/ROHS acts which standed for the beginning of none-lead revolution world wide were then passed by the European Union. Challenge and crisis which were caused by the production of none-lead were forced to the manufacture of electrical devices. So, methods of using none-lead solder to avoid lead pollutions is becoming more popular in the electrical encapsulation.It is essential to investigate original epoxy materials with more higher Tg and stronger capability of hot resistance which can accommodate with the development of the electrical encapsulation. Synthesis of novel epoxy resin and epoxy harder with fluorene is an available approach in the practical researches, but, such researches were fewer in china. So it is valuable and practical to investigate such epoxy system containing fluorene group to satisfy the none-lead electrical encapsulation and composite material.In this work, BPFOG with higher quality was synthesis by using decompress-boiling technique, composite catalyzer and post treatment with thin NaOH solution. The obtained product was confirmed to be BPFOG by using IR, 1HNMR and GPC analysis. Further investigations of hot behavior of the mixture of BPFOG and epoxy harders were also tried, it could offer more information and supporting for the solidify of BPFOG.. Main works were as follow:1. BPFOG was synthesis by using multiplex catalyzer, BPF and ECH as starting materials. At the same time, decompress-boiling technique, composite catalyzer and post treatment with thin NaOH solution were also bring into effect. The obtained BPFOG resin with high quality has the eq value 0.42(theoretical = 0.43), it was also confirmed that almost 90% the products were consisted of 90% monomer by GPC analysis, organic chlorine content was even lower than 150ppm.2. The structure of the compound was confirmed by MS,FT-IR and 1HNMR, the side products in the synthesis was also discussed. We also studied the reason of the color, and offered the methods of resolving the problem.3. Mechanism of the synthesis and side products which producted in the synthesis were discussed.4. Heat behavior of BPFOG when reacted with DDE, DDM and DDS were also studied by DSC machine. The best reacted temperatures were 177.7℃,224.5℃and 161.1℃.5. The condensate obtained by reacted BPFOG with DDM and DDS was researched by DSC machine too, result showed that the condensate has perfect hot resistance, their decomposition temperature were 327℃and 380℃.