| Poly(aryl amide)s and1,3,5-triazine-based polymers are high-performance polymers, exhibiting insoluble nature, which greatly limits its use.Therfore, in order to obtain soluble high-performance polymers, including the new structure into the aromatic polyamide and modifing1,3,5-triazine polymer become a research focus.we designed and synthesized a novel triphenyl-1,3,5-triazine-containing aromatic dicarboxylic acid monomer for the preparation of high-performance polymers. In this paper, we use four methods to synthesize2,4-bis(4-methylpheyl)-6-phenyl-1,3,5-triazine(BMPT) which is oxidized by two methods (CrO3and KMnO4).we discusses the experimental conditions of the reaction, the yield and the purification methods to get the optimal route and experimental conditions. The Chemical structure of BMPT and BCPT was proved by1H NMR, IR, elemental analysis, mass spesctrometry.The optimal synthetic route is that BCPT is synthesized by three steps (Grignard reaction, Friedel-Craft reaction, CrO3oxidation) with the materials to cyamuric chloride, bromobenzene and toluene.To the experiment of oxidation to BMPT by CrO3, the optimal experimental conditions were as follows:reaction temperature is25℃, reaction time of8hours, oxidants/BMPT molar ratio of4, acetic acid and H2SO4ratio (by Volumm) of10:1.we make aromatic acid monomer react with a variety of commercially available aromatic aromatic diamin by Yamazaki phosphine method.The product of model reaction and polyamides are characterized by1H NMR, IR, elemental analysis. These polymers have useful levels of thermal stability associated with relatively high galss-transition temperatures (310～330℃) and10%mass loss temperatures in the range of515～527℃in nitrogen. All the polymers are readily soluble in many organic solvents such as NMP, DMAc.The cast films of these polymers exhibited good mechanical properties with tensile strengths of71.5～94.7MPa, elongations at break of6.1±10.0%, and initial moduli of2.3±2.8GPa. |
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