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研究了3,3’-双(叠氮甲基)氧杂环丁烷(BAMO)与3-硝酸甲酯基-3’-甲基氧杂环丁烷(NMMO)共聚物的组成、微观结构、热分解和感度。共聚物中各单体的摩尔比分别为:BAMO/NMMO=8/2,7/3和6/4,测定的组成分别为81/19,68/32和60/40,微观结构测定值与理论计算值符合得很好。BAMO显示出热分解时在起始阶段侧链分解,另一方面,NMMO的热分解是由主链控制的。尽管BAMO单元和NMMO单元共聚了,但它们在共聚物中分解的多少是由各自独立的分解特性决定的,因此NMMO在40℃时发生分解,比BAMO的分解温度低,分解产生的热加速了BAMO的反应。聚B/N(7/3)表现出了良好的感度特性、机械性能和热分解特性。
The composition and microstructure of copolymers of 3,3’-bis (azidomethyl) oxetane (BAMO) and 3-nitromethyl-3’-methyloxetane , Thermal decomposition and sensitivity. The molar ratio of each monomer in the copolymer was respectively BAMO / NMMO = 8/2, 7/3 and 6/4, the measured compositions were 81/19, 48/32 and 60/40, respectively. The theoretical value is in good agreement. BAMO shows the side-chain decomposition at the initial stage of thermal decomposition, and on the other hand, the thermal decomposition of NMMO is dominated by the main chain. Although BAMO units and NMMO units are copolymerized, the amount of their decomposition in the copolymer is determined by their independent decomposition characteristics. Therefore, NMMO decomposes at 40 ° C and is lower than the decomposition temperature of BAMO, accelerating the decomposition heat BAMO’s reaction. Poly B / N (7/3) exhibits good sensitivity characteristics, mechanical properties and thermal decomposition properties.