Abstract:
PURPOSE: A device using a linear optical fiber bundle for optically detecting dangerous liquid is provided to determine whether liquid contained inside a container is dangerous or not by using a spectroscopic analysis method. CONSTITUTION: A device using a linear optical fiber bundle for optically detecting dangerous liquid includes a target object arrangement unit (C), a laser emitting unit (50), a semi-cylindrical collecting lens (20), a linear optical fiber cable (30), and a spectrum determining unit (60). The target object arrangement unit is formed into a chamber form of which an internal space capable of placing a container (10) containing liquid is opened/closed by a cover or a lid, and the inner surface thereof is covered with a black body. The laser emitting unit is connected to the target object arrangement unit so that continuous wave lasers (40) of a frequency of 532 nm, which has energy of 150 mJ or less, are incident into the internal space of the target object arrangement unit. The semi-cylindrical collecting lens collects Raman signals generated when the continuous wave lasers are penetrated through the liquid inside the container. A collecting lens head (31) and a spectrum determining unit head (32) are arranged on both end portions of a linear optical fiber bundle (33) composed of a plurality of linear optical fibers respectively. When the Raman signals are inputted, the spectrum determining unit splits lights with a light splitter (62) and compares and analyzes the split lights with a dangerous material spectrum information stored in the database of a computer (63), thereby determining whether the liquid inside the container is dangerous or not. [Reference numerals] (AA) Front; (BB) Back
Abstract:
PURPOSE: A preparation method of 2,2'-bi-1H-imidazole using an ammonium salt and glyoxal is provided, thereby simply and stably preparing 2,2'-bi-1H-imidazole in higher yield. CONSTITUTION: A preparation method of 2,2'-bi-1H-imidazole comprises the steps of: dissolving an ammonium salt in water to prepare slurry; slowly dropping 20 wt.% of glyoxal into the slurry at 30 to 60 deg. C for 2 to 4 hours; and stirring the mixture at room temperature for 0 to 5 hours, wherein the ammonium salt is selected from the group consisting of ammonium acetate, ammonium benzoate, ammonium bromide, ammonium carbonate, ammonium chloride, ammonium chromate, ammonium dichromate, ammonium formate, ammonium nitrate, ammonium oxalate, ammonium sulfamate, ammonium sulfate, ammonium sulfite, ammonium tartrate, ammonium tetrafluoroborate, ammonium thiocyanate and ammonium thiosulfate.
Abstract translation:目的:提供使用铵盐和乙二醛的2,2'-双-1H-咪唑的制备方法,从而以更高的收率简单稳定地制备2,2'-双-1H-咪唑。 构成:2,2'-双-1H-咪唑的制备方法包括以下步骤:将铵盐溶解在水中以制备浆料; 在30至60℃下将20重量%的乙二醛缓慢滴入浆料中。 C 2〜4小时; 并在室温下搅拌混合物0至5小时,其中铵盐选自乙酸铵,苯甲酸铵,溴化铵,碳酸铵,氯化铵,铬酸铵,重铬酸铵,甲酸铵,硝酸铵 草酸铵,氨基磺酸铵,硫酸铵,亚硫酸铵,酒石酸铵,四氟硼酸铵,硫氰酸铵和硫代硫酸铵。
Abstract:
The present invention relates to a composite explosive including 4,4′-(ethane-1,2-diyl) bis (5-nitroiminotetrazol-1-id) organic salts which is a rich nitrogen material with high energy. Particularly, the present invention relates to a compression type or a casting type composite explosive including bis(ammonium)-4,4′-(ethane-1,2-diyl)bis(5-nitroiminotetrazol-1-id) or bis(guanidinium)-4,4′-(ethane-1,2-diyl)bis(5-nitroiminotetrazol-1-id).
Abstract:
PURPOSE: A manufacturing method of 1,2-bis(5-aminotetrazole-1-yl)ethane is provided to reduce the generation of harmful materials and to obtain a mass production process with low carbon, high nitrogen, and environmentally friendly nitroaminotetrazole classes. CONSTITUTION: 1,2-bis(5-aminotetrazole-1-yl)ethane is manufactured from an ethane derivative represented by chemical formula (I) and 5-aminotetrazole hydrate through a nucleophilic substitution reaction which uses water as a solvent under the presence of hydroxide of an alkali metal. The 1,2-bis(5-aminotetrazole-1-yl)ethane is manufactured from a 5-aminotetrazole derivative represented by chemical formula (II) and 5-aminotetrazole hydrate through a nucleophilic substitution reaction which uses water as a solvent under the presence of hydroxide of an alkali metal. The 1,2-bis(5-aminotetrazole-1-yl)ethane is separated by filtering at 80-100 deg. Celsius after the nucleophilic substitution reaction. The hydroxide of alkali metal is selected from NaOH(sodium hydroxide) or potassium hydroxide.