Studies On The Synthesis Of Polybrominated Diaminotriphenyl Ethers Monomer And Its Polyimide

This dissertation content involves the halogenated benzene ether co熔点oundsand their derivatives of literature review, the research of2,4,6,-Tribrominated-1,5-DiaminotripHenyl Ethers and the molecular design and synthesis of characterization of polyimide with diamine monomer of2,4,6,-Tribrominated-1,5-DiaminotripHenylEthers.A kind of new type of diamine monomer2,4,6,-Tribrominated-1,5-Diaminotri-pHenyl Ethers containing benzene ring, bromine, amide,and ether oxygen key weredesigned and synthesized with2,4,6-Tribromoresorcinol as starting material. Synth-esis of this kind of polyimide materials were expected to have good dissolutionand processing properties.The first step is the synthesis and characterization of2,4,6-Tribromoresorcinol.Experiment with resorcin as starting material, bromide as bromide reagent, by cha-nging the te熔点erature, solvent, ratio of material to study the optimum conditionfor synthesising target co熔点ounds and characterization by FI-IR and Mass spectro-metry.Experiment in the second part is the synthesis and characterization of2,4,6,-tribrominated-1,5-Dinitrotrip Henyl Ethers.Experiment use2,4,6-Tribromoresorcinoland nitro chlorobenzene as raw material,by changing the solvent, te熔点erature cond-itions to study the optimum reaction conditions for synthesizing2,4,6,-tribrominated-1,5-DinitrotripHenyl Ethers and the characterization through IR.The third part is the synthesis and characterization of2,4,6,-tribrominated-1,5-Diaminotrip Henyl Ethers.By the reduction of2,4,6,-tribrominated-1,5-Diaminotrip-henyl Ethers to get the infrared, mass spectrum characterization of target co熔点ou-nds.The fourth part of the experiment is the synthesis of new type of polyimide.2,4,6,-tribrominated-1,5-Diaminotrip were aggregated with commercially available ketone anhydride, ether anhydride, biphenyl dianhydride anhydride and hexafl-uorodia-nhydride,expect to get several new polyimide materials,but because of ashortage of diamine monomer purity, leading to failed to get a better polymerfilm.Mass spectrum, IR spectrum, and determination of bromine element analysisresults show that synthesise of monomer molecule structure are consistent with thedesigned molecule structure, confirm the molecule designing, reaction designing a-nd synthesise designing are feasibility. The diamine monomer are not found in alarge number of literature at present.