几种新型黑色固体燃料制备技术

介绍了几种新型黑色固体燃料制备技术．     

Thermal Decomposition Kinetics of Some Metal Complexes of 2,3-Hydroxyimino-4-phenyl-6-phenyazo-1-thia-4,5-diazacyclohexa-5-diene

The Ni(II), Cu(II) Co(II) and Zn(II) complexes of 2,3‐hydroxyimino‐4‐phenyl‐6‐phenyazo‐1‐thia‐4,5‐diaza‐ cyclohexa‐5‐diene (H₂L) were synthesized. Thermal behavior of these complexes was studied in dynamic nitrogen atmosphere by TA (thermogravimetric analysis), DTA (differential thermal analysis) and DTG (differential thermal gravimetry) techniques. The reaction order, the activation energies, the entropies, the enthalpies, the free energies, and the pre‐exponential factors of the thermal decomposition reactions were calculated from the thermogravimetric curves. The kinetic analysis of the thermogravimetric data was performed by using several methods such as MacCallum‐Tanner (MT), van Krevelen (vK), Madhusudanan‐Krishnan‐Ninan (MKN), Wanjun‐Yuwen‐Hen‐Cunxin (WYHC), Horowitz‐Metzger (HM) and Coats‐Redfern method (CR) based on the single heating rate. Most appropriate methods were determined for each decomposition step according to the least‐square linear regression. The Ni(II), Cu(II) Co(II) and Zn(II) complexes displayed one‐ or two‐stage decomposition pattern when heating in a dynamic nitrogen atmosphere and metal oxides remained as end products of the complexes. The characterization of the end products of the decomposition was performed by X‐ray diffraction.     

Geometrical disorder of the fronts of a tunnel-crack propagating in shear in some heterogeneous medium

A statistical analysis of the deformation of the fronts of a tensile tunnel-crack propagating in fatigue in some medium with spatially varying Paris constant was recently performed, with special emphasis on the evolution of the power spectra and correlation functions of the fluctuations of the fronts around reference straight lines. This study is extended here to coplanar propagation (along a weak plane) of a tunnel-crack loaded in mode 2+3. The results are rather similar to those previously obtained for mode 1. In particular, just like for tensile loadings, there is an effect of gradual selection in time of Fourier components of the fluctuations of the fronts of large wavelength. One novelty, however, is that for shear loadings, the fronts no longer tend to become symmetrical in time, so that correlations between crack front fluctuations at two points are higher for points located on the same front than for points located on distinct ones.     

镍（Ⅱ）-六次甲基四胺配合物的固相反应合成

在室温条件下，六水合二氯化镍与六次甲基四胺发生固相化学反应，制得了镍(Ⅱ)-六次甲基四胺配合物，对产物进行了元素分析，并研究了其热致变色性能．     

崩解剂羧甲基淀粉的固相合成及性能

对崩解剂羧甲基淀粉（CMS）固相合成方法进行了研究，筛选了固相合成CMS用催化剂，合成了医药用崩解剂羧甲基淀粉，考察了碱和一氯乙酸用量对CMS取供度（DS）的影响及DS和CMS中游离羧基和成盐羧基比（H／Na）对崩解剂吸水溶胀性能的影响。实验表明，该合成方法与溶液相比，节约了有机溶剂，降低了生产成本，提高了产品质量和收率。     

固体潮力触发地震的可能性

为验证固体潮力触发地震的可能性,通过理论推导计算了太阳和月球对地球的固体潮力及其作用范围。结果显示:太阳和月球对地球的固体潮力远远小于地壳岩石强度,单一的固体潮力不能使岩石破裂而引发地震;太阳和月球对地球的加卸载作用主要集中在低纬度地区,与地球地震带范围基本吻合。岩石力学实验结果表明,岩石在外力作用下达到非线性时,固体潮力的扰动也可以触发地震。该结果为地震预报研究奠定了基础。