A nitramine compound first synthesized in 1877. Its abbreviation is NGd. Since World War II, it has been used as a component of triple-base propellants. Adding nitroguanidine lowers the combustion temperature, and the gas generated with the same energy is less corrosive to the gun barrel. It is a colorless polycrystalline powder that usually has a low specific gravity and a tangled structure. Its crystal density is 1.77, and its melting point is 246-246.5°C. It is non-hygroscopic, but quite soluble in hot water. Its DTA decomposition onset temperature is about 220°C, and it produces a large amount of decomposition gas, making it an advantageous component of propellants. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
1877年に初めて合成されたニトラミン化合物。略記号NGd。第2次大戦以降,トリプルベース発射薬の一成分として用いられるようになった。ニトログアニジンを添加すると燃焼温度が低下し,同じエネルギーで発生するガスの砲身に対する侵食(焼食)性は減少する。無色の多結晶質で,ふつう低比重のもつれた構造の粉末である。結晶比重1.77,融点246~246.5℃。非吸湿性であるが,温水にはかなり溶ける。DTA分解開始温度約220℃,分解ガス発生量は大で,発射薬成分として有利である。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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