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- W2368837025 abstract "Using water and toluene as solvents,and quaternary ammonium salt as phase transfer catalyst,under the effect of NaOH,3,3-dibromomethyl oxetane(BBMO) was synthesized by the cylization of 1,1,1-tribromomethyl-1-hydroxymethyl methane.Using water as solvent,quaternary ammonium salt as phase transfer catalyst,3,3-diazido methyloxetane(BAMO) was obtained by the substitutation of BBMO with NaN3.The prepolymer of BAMO(PBAMO) was synthesized by the cationic polymerization of the monomer BAMO,and it had a number average molecular weight from 3000 to 4000.The chain-extended PBAMO(CE-PBAMO) was synthesized by the chain extended of the PBAMO with 2,4-toluene diisocyanate(2,4-TDI) and 1,4-butanediol(1,4-BDO).The structure and physical chemical properties of BBMO,BAMO,PBAMO and CE-PBAMO were identified by FTIR,1H NMR,HPLC,DSC and GPC.The results show that the yield and purity of BBMO are 81% and 97.2%,and the yield and purity of BAMO are 80.9% and 98.37%;the synthesis of BBMO and BAMO by phase transfer catalysis possesses advantages of safety,high yield and high purity;the synthesized CE-PBAMO which has a number average molecular weight of 38933,can melt and dissolve,and its tensile strength is 12.7 MPa at 20 ℃,it can be used as high energy thermoplastic binder in the manufacture of the new type of combustible cartridge case which has concept of 3R(recycle,recover,reuse)." @default.
- W2368837025 created "2016-06-24" @default.
- W2368837025 creator A5022664585 @default.
- W2368837025 date "2010-01-01" @default.
- W2368837025 modified "2023-09-25" @default.
- W2368837025 title "Synthesis of High Energy Thermoplastic Binder CE-PBAMO" @default.
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