Abstract:
본 발명은 글라이시딜 디나이트로프로필 카보네이트 및 폴리(글라이시딜 디나이트로프로필 카보네이트)에 관한 것이다. 본 발명은 고성능 둔감 화약용 고에너지 결합제로 사용되는 예비중합체(prepolymer)인 폴리(글라이시딜 디나이트로프로필 카보네이트)를 제공한다. 본 발명에서는 나이트레이트기 대신 나이트로기를 에너지기로 도입함으로써 기존의 에너지 결합제에 비하여 열적 안정성이 월등히 개선된 예비중합체를 제공한다.
Abstract:
PURPOSE: Provided is a copolymer of 2,2-dinitropropyl acrylate and 2,2-dinitrobutyl acrylate, which is excellent in mechanical properties and can make composite gunpowder insensible compared to conventional energy-containing binders. CONSTITUTION: The copolymer(formula 1) of 2,2-dinitropropyl acrylate and 2,2-dinitrobutyl acrylate is produced by a process comprising the steps of: injecting the 2,2-dinitropropyl acrylate and the 2,2-dinitrobutyl acrylate into a reactor and mixing with a solvent in the presence of a radical initiator and injecting nitrogen into the reactor; stirring at 60-100deg.C for 3-8 hours; adding the resultant to methanol and stirring at ordinary temperature; drying produced precipitates. In the formula, X+Y=1.
Abstract:
PURPOSE: An energetic formal plasticizer for explosive formulations comprises bis(2,2-dinitropropyl)formal(BDNPF), and especially comprises bis(2,2-dinitropropyl)diformal(BDNPDF) as anti-crystalline agent. The energetic formal plasticizer exhibits superior thermal/chemical properties with less production cost. CONSTITUTION: The mole ratio of BDNPDF is desirable controlled to be 8-44mol.% of a mixture of BDNPF and BDNPDF. The preparation method of this plasticizer comprises the steps of (i) dissolving 2,2-dinitropropanol and formaldehyde source such as paraformaldehyde and s-trioxane in an organic solvent like methylene chloride; (ii) adding sulfuric acid solution while controlling the temperature of a reactor in the range of -30 to 20deg.C (iii) refining obtained mixture.
Abstract:
PURPOSE: Nitratoethyl oxirane, poly(2-nitratoethyl oxirane) and a preparation method thereof are provided, which compounds have similar energy to PGN(polyglycidylnitrate) and improved storage stability. Therefore, they can be useful as energetic prepolymers. CONSTITUTION: The 2-nitratoethyl oxirane is represented by the formula (III). The poly(2-nitratoethyl oxirane) is represented by the formula (IV). The method for preparing the poly(2-nitratoethyl oxirane) of the formula (IV) comprises the steps of: preparing 1,4-dinitrato-2-butanol of the formula (II) from 1,2,4-butanetriol of the formula (I); preparing 2-nitratoethyl oxyran of the formula (III) from 1,4-dinitrato-2-butanol of the formula (II); and polymerizing the 2-nitratoethyl oxyran of the formula (III).
Abstract:
The present invention related to casting compound gunpowder which improved heat or mechanical property and stability, and had proper operation delay time recharged with gunpowder particle and filler and so forth on urethane bond agent and method of manufacturing.The present invention comprises a process of mixing liquid phase prepolymer, plasticizer, antioxidant; a process of mixing recharging like gunpowder particle(R.D.X), aluminium particle, ammonium perchlorate particle; a process of adding low molecular weight body aliphatic diol; a process of mixing isocyanate conforming to 80-100% of stoichiometric quantity need to polymer reaction with hydroxylic; a process of achieving polymer reaction of hydroxylic with isocyanate by heat hardening after recharging gunpowder slurry to coal body or mold.