Adhesives based on nitrile rubber are widely used in many different fields. In this article, the authors have proposed an application and process for making colloidal solutions based on a mixture of nitrile rubber and natural rubber. Research has been conducted to investigate the influence of the ratio of rubber components, the proportion of ingredients of fillers, the ratio of phenolformaldehyde resin to the calculation of technical requirements and the bond strength of the adhesive. Test results determine the bond strength is equivalent to BK-3 adhesive (in imported from Russia, OCT 1 190281-86).

This paper presents the influence of oxidizer/fuel ratios on several energetic characteristics (combustion heat, gaseous volume, burning rate) of the red flame pyrotechnic containing potassium perchlorate, magnesium, strontium carbonate, polyvinyl chloride, and novolac resin. Based on the received experimental data and theoretical results, the reasonable potassium perchlorate/magnesium ratio of 25/22 is determined. The pyrotechnic mixture has the combustion heat of 841 cal/g, the gaseous volume of 250 ml/g, the burning rate of 8,1 mm/s at a pressed density of 1.56 g/cm3, the color purity of 91%, the decomposition temperature of 525oC, and small friction sensitivity. The pyrotechnic mixture can be used for red stars in signal mines.

This paper presents several research results about the influence of percentage of raw materials on important characteristics of the delay mixture based on copper oxide and silicon such as heat of combustion, specific volume of gaseous products, combustion temperature. Analysing computed results and experimental data show that this delay pyrotechnic has high combustion heat and temperature of combustion wavefront, “gasless”, safety with thermal impulse. Its burning rate is 9.6 mm/s at 2.2 g/cm3 of density.

This paper presents the influence of oxidizer/fuel ratios on several energetic characteristics (the heat of combustion, gaseous volume, burning rate) of the red flame pyrotechnic containing strontium nitrate, magnesium, polyvinyl chloride, and novolac resin. Based on the received experimental data and theoretical calculation results, the reasonable strontium nitrate/magnesium ratio of 58/15 is determined. The pyrotechnic mixture has the heat of combustion of 921 cal/g, a gaseous volume of 260 ml/g, a burning rate of 2.02 mm/s at a pressed density of 1.60 g/cm3, a color purity of 89%, a decomposition temperature of 481.5oC, and less sensitive to friction and impact.

The article studies the effect of aluminum powder (with different content and particle size) on some significant properties of emulsion explosive such as density, water resistance, detonation velocity and heat of explosion. The calculated data and experimental results show that the density, heat of explosion and detonation velocity of the emulsion explosive with aluminum powder as an energy additive which is less than 10% of the content are higher than those without aluminum powder, while its water resistance decreases. It is proved that aluminum powder can be completely used to impove the detonation energy of emulsion explosive with paying attention to its low water resistance when conduct underwater blasting.