The structure and specific electrical conductivity of composite materials based on vacuum residue and low density polyethylene has been studied. It is shown that changes in the properties of composites correspond to changes in the degree of structural heterogeneity.

We investigated the processes of modification of polyamid acid to obtain polyimide films. The rheological and deformation- strength properties of the modified polyimide materials were determined. Developed modified polyimide systems with adjustable have been developed.

The paper presents the data of calculations of the structure and composition of particle-filled polymer composites with various fillers and polymer matrices. It is shown that the parameters of the structure, the filler content of composite, as well as the dependencies of properties on the parameters of the structure should be presented only in volume units (vol. fractions or vol. %). Calculations of the compositions in mass units are allowed for the calculation of weighing in composites manufacturing.

Diffusion properties and structure of the hydroxypropyl- and ethylcellulose films, formed from mixed solvents in the magnetic field and in its absence, have been studied with sorbtion method and polarized microscopy. It was found the change of the diffusion coefficients of solvents into the films, obtained under the influence of the magnetic field.

Upon curing of novolacs SF-010 and SF-014 in the presence of dimethylol-p-cresol crosslinked phenolformaldehyde polymers were obtained. Their physicomechanical and thermal characteristics were studied. Optimal curing conditions were founded.

The structures of novolac monoalkyl(C8-C12)phenol-formaldehyde oligomers, modified with imidazolines based on natural petroleum acids and polyamines-diethylenetriamine, triethylenetetraamine, polyethylenepolyamines were investigated by IR-spectroscopy. As a result of the analysis of the IR-spectra of the initial and final products, the reaction mechanism is proposed.

The eff ect of butadiene rubber molecular parameters on conversion dependencies and viscosity characteristics of the process of graft copolymerization of styrene, microstructure and quality indicators of the synthesized samples of impact-resistant polystyrene was studied. It is testifi ed that an increase in the molecular mass of the elastomer does not aff ect the monomer conversion, however, it leads to a phase inversion shifting to the region of lower conversion degrees of styrene. In this case, an increase in the size of rubber particles and an increase in the content of the gel fraction are observed in the copolymer. The established changes in the microstructure correlate with the properties of high-impact polystyrene.

The 1-aminoanthraquinone glycidyl ester (GEAA) obtained by reaction of N-alkylation of 1-aminoanthraquinone with epichlorohydrin was used in the synthesis of a structurally colored epoxy resin by co-polycondensation with with diphenylolpropane and epichlorohydrin. Structurally colored epoxy resin is a viscous liquid with a molecular weight of 400–1000, colored orange and soluble in organic solvents. The optimal amount of GEAA (from 0.1 to 0.5% wt.) is established, which provides high color intensity (molar extinction coeffi cient 0.16–1.38·104).

The steady-state non-isothermal process of viscoelastic fl at polymer fi lm casting is considered. The polymer melt is extruded through a fl at die, subjected to uniaxial stretching and at the same time air cooling, and then fi nally cooled down on a chill roll. It is assumed that the fi lm is wide enough, the distance between the extruder die and the cooling roller is minimal to such an extent that it is possible to neglect change of width of a fi lm in the course of longitudinal stretching. It is also believed that the forces of gravity, inertia and surface tension can be ignored. From a rheological standpoint, polymer melt is the viscoelastic fl uid. The upper-convective Maxwell model with temperature-dependent viscosity is used. The problem is solved by a numerical method of fi nite diff erences.

The paper presents specifi c features and experimental results of the procedure proposed in Part 1 (N3-4/2019) to determine temperature characterstics of glass-transition region of polymers and polymer composites using dielectric analysis.

Using the example of polystyrene fi lling with spherical granules of inorganic glass, it was shown that inorganic glass, when interacting with a polymer, manifests itself as an adhesively active reinforcing material. This is confi rmed by the study of the eff ect of dispersion of inorganic glass granules on the performance of the fi lled polymer, fi rst of all, on the change of its thermalfl uctuation constants, from the standpoint of the thermofl uctuation concept of destruction.

Findings of investigation of infl uence of concentration and particle size of a connatural mineral of Azerbaijan vezuvian on the basic physical-mechanical properties of composites on the basis of a copolymer of ethylene with hexene are resulted. It is positioned that is comparative the best rheological and deformationlyof strength properties possess nanocomposites. It is shown, joint infl uence vezuvian and an amendment of dioxide of aluminium on qualitative characteristics nanocomposites.

New data on the eff ect of a SiC and TiN fi llers on the practically important properties of epoxy polymer are presented. The possibilities for a signifi cant increase in microhardness – 1.5–2 times, bending modulus (1.4–1.7 times), compressive strength (for SiC), abrasion resistance and chemical resistance (in nitric acid and acetone/ethyl acetate) are established. At the same time, the thermal stability of the compositions and their strength properties is substantially increased. This is manifested in the eff ects of strengthening (compared with the unfi lled analogue) and plasticization of such composites after temperatures that destroy the ordinary polyepoxides (200–300°C. These eff ects are not covered in the literature and are named by the author as “eff ects of thermal strengthening and thermoplasticization of epoxy composites”.

The infl uence of 1,1,9-trihydroperfl uorononanol-1 immobilized on montmorillonite nanoclay, supramolecular structure polycaproamide fi lms and their stability at elevated temperatures. The gaseous products of thermal degradation of polyamide fi lms, including carbon oxides, water, ε-caprolactam, aldehydes and methanol, have been studied by FTIR and mass spectroscopy. The method of thermogravimetry shows that the fl uorine-containing polyamide has a high thermal stability.

The analysis of the rheological methods, which are used in the production of the cellulose-nitrate powders carried out in this article, allowed to systematize the obtained information and to recommend the specifi c rheological methods in the course a reprocessing of the cellulose-nitrate masses in the wide concentration limits (20-50%) into powders, depending on the technology of their production.

The paper analyzes the possible ways of joining of polymer-based synthetic fabrics. The technological capabilities of seam ultrasonic welding of synthetic fabrics are considered. Experiments on the weldability of polyester, nylon and polypropylene fabrics are carried out. The main parameters of the mode of seam ultrasonic welding of synthetic fabrics are determined.

A composition and a method of applying a fl ame retardant composite coating for cellulose based fabrics are proposed in the paper. Optimal concentrations of components, which allow obtaining a coating with a maximum degree of oxygen index of 46%, were determined. It is shown that the observed fi re-resistant eff ects are a consequence of the complex infl uence of all components of the phosphorus, nitrogen, siloxane-containing composition.

It is described how, based on theoretical concepts of orientation phenomena in polymers, the technology of orientation of aviation organic glasses with high physicomechanical properties and durability in operation was developed and widely implemented in the industry for the fi rst time in VIAM. Organic glass AO-120 has become the main glazing material for many aircraft. The restoration of the production of aviation organic glasses during the crisis of the late 90s and the creation of AO-120A glass with higher physicomechanical and optical properties are described.

This publication presents materials of foreign experts on the terminology and types of biodegradable plastics in their areas of application. The article presents the classifi cation of bioplastics, gives the defi nition of biodegradability, renewability and compostability. Examples of the most acceptable scopes of biodegradable plastics are given.