chemical bonds

Rheological properties of melts and x-ray method of study of cross-linked polyethylene

In the paper, the X-ray study of cross-linked polyethylene with isopropenyl styrene or acrylonitrile was carried out. It is shown that cross-linking leads to a significant decrease in the area of the exothermic peak, an increase in the resistance of the structured system to thermal oxidation. These data confirm that the increase in resistance to thermal aging of polyethylene cross-linked with acrylonitrile or isopropenyl styrene fraction.

Thermochemical Conversion of Coal under Microwave Radiation

The paper presents diagrams of the organic mass structure of coal macromolecules. Investigations were carried out on the microwave treatment of Z grade coal. A mathematical model of microwave radiation effect on the structure of the macromolecule of low-metamorphosed coal was constructed. The effect of microwave treatment on thermochemical transformations of the coal organic mass using a scanning electron microscope was studied.