Abstract:This paper relates to the adhesion of polymer bonded explosive, which is chemically and physically considered as two processes. The physical process of adhesion is discussed with adsorption theory and acid-base coordination theory, and the chemical process of adhesion is discussed with the mechanism of cure and cross-linkage.

Abstract:High-pure TATB was prepared by repeatedly recrystallizing the commercial product with N, N-dimethyl formanmide. The TATB refined up to 99. 98% was qualitatively aud quantitatively characterized with a series of methods iucluding infra-red spectrum (IR), differential thermal analysis (DTA), visible spectrum, chlorine content, DMSO soluble substances, ash content, high pressure liquid chromatograph (HPLC), polarograph, determination of ammonia and so forth.

Abstract:A new series of color smoke compostion was developed. The ratio of fuels, oxidizers, dyes and indicators can freely beadjusted according to different requirements. The smoke compostions are featured with simple manufacture, low cost, storage stability and safety in practice, which is a good series of color smoke agent suitable to military and civil purposes.

Abstract:The phase diagrams of cyclotrimethylene trinitrosamine （TMNT）-N, N’-dimethyl-N, N’-diphenyl urea （C₂） and 2, 4, 6-trinitrotoluene （TNT）-picric acid （PA） have been constructed by differential scanning calorimetry （DSC）. Their eutectic points are 86. 3 and 61. 5℃ respectively. The compositions correspoinding to the eutectic points are 57. 0 weight percent TMNT and 68. 4 weight percent TNT respectively.

Abstract:The plot of detonation velocity vs. inverse radius curves and critical diameters (d_er) were obtained for PETN single crystals shocked parallel[001] and [110] crystal planes, d_er was found dependent on the detonation wave orientation, being 11～14 mm for the [110] and 5～7 mm for the [001]planes. New results were compared with the previous data for PETN single crystal d_er. and J. Dick’s shock initiation experiments.

Abstract:In this paper, jet initiation mechanism and criterion of high detonation velocity explosives have been discussed in detail on the basis of investigating and analysing a number of references. Besides, jet initiation process of commercial low detonation velocity explosives also has been described. The different characteristics between jet initiation of high detonation explosive and commercial low detonation explosives have been analysed.

Abstract:Correlation betweeiq the molecular structure of an explosive component and the combustion rate or rate-pressure index of a powder formulation is analyzed according to experience and preliminary results of combustion rate prediction research. It was found that low and high rate-pressure index powder differ greatly in the molecular structure of explosive component used and evident regularity exists. If this new concept and regularity are used as a principle to guide the molecular structure design or selection for a powder formulation,it will be possible to estimate the combustion properties of the formulation based on the characteristics of the chemical bonds of the components present,which will greatly benifit the formulation or combustion rate design and regulation.

Abstract:γ-Ray revolving gauge for measurement of local density homogeneity of explosive charges is introduced, and the main features of the guage and its parts are discussed.

Abstract:This paper reviews the application of the optical measuring techniques in the research of explosive physical properties, such as the high speed photography, optical band method, laser velocity interferometer, dynamic high temperature measurement,optic-fibre sensor, shadow photography, schlieren photograph, moire photography and so on.

Abstract:For predicting detonation velocity (D) and pressure (P) of a polynitro cage compound at its theoretical maximum density with R-P empirical method, it is necessary to modify the term A/3 dealt with the molecular structure in the F factor and to consider the contribution of high crystal density and high strain energy embedded in the molecule stemming from the cage systems to the F factor. Compared with R-P method, the modified R-P one not only preserves original advantages, but also markedly improves the predicting results.With the predicting results of the K-J method taken as the basic data, the relative error of detonation velocities and pressures for all 25 polynitro cage compounds evaluated by using modified R-P method is ±1.9% and ±5.2%,respectively.However,the relative error for the same compounds predicted by R-P method is ±14.0% for D and ±21.4% for P.

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