modification

Polylactide composite materials with organic filler-modifier starch, inorganic filler -calcium carbonate and plasticizer - epoxidized soybean oil for 3D printing have been developed. On the basis of the modular deformation method of calculation the elastic-plastic and deformation properties of the developed modified polylactide materials are determined. The change of modulus of deformation, modulus of elasticity, modulus of high elasticity depending on the composition of the composite is revealed.

The possibility of using potassium humate as an inhibitor of the technological aging of oxidized petro-leum bitumen has been investigated. Samples of potas-sium humate obtained from various raw materials, in particular peat and leonardite, were selected and compared. Aging coefficients have been calculated and operational properties of modified bitumen as a binding material for hot mix asphalt have been investigated. It was established that 3.0 wt.

Areas of use of natural clinoptilolite were analyzed. The emphasis was placed on its application in water technology and medical practice. The results of the study of the dehydration of clinoptilolite at different temperatures were presented. The influence of the activation temperature of clinoptilolite on its sorption capacity for silver ions was determined. The effect of modification with ions and highly dispersed silver particles on the sorption capacity of various zeolite fractions with respect to water was investigated.

The features of obtaining and modifying Ba- and Zn-containing polymer-silicate fillers have been researched. The influence of polystyrene modifiers (suspension and impact-resistant polystyrene) and finely dispersed Ba- and Zn-containing polymer-silicate fillers on the gelation process, view of flow curves, rheological properties: flow index, flow limit, thermal stability, surface hardness and elasticity of plasticized poly(vinyl chloride) have been discovered.

The article is presenting a modification of bituminous binder with ecological epoxidized rapeseed oil (BERO) in the presence of the initiator (hardener). Adipic acid (AA), maleic anhydride (MA) and polyethylene polyamine (PEPA) were used as the initiators. The effect of modification temperature and, as well as initiator nature, on the bitumen properties was determined. Bitumen modified with BERO was evaluated by the following indicators: softening temperature, penetration, ductility, and adhesion to the glass.

The technology for producing montmorillonite modified with polyionenes has been developed. It was shown that macromolecular polymer intercalation of the quaternary ammonium salt of montmorillonite intercrystalline space is accompanied by an increase in interlayer distances from 1.08 to 1.67 nm. A method for the synthesis of montmorillonite modified with polyionenes is proposed.

 The properties of the filled polymer compositions largely depend on the nature and surface properties of the fillers- basalt fiber. The possibility of modifying the surface of the basalt fiber with commercial polyhexamethyleneguanidinehydrochloride and non-commercial polydiethyleneaminoguanidine - appretes, were demonstrated for the first time.

It was found that under the action of acoustic vibrations of the ultrasonic (US) range, the rate of sorption of Argentum ions and the static capacity of clinoptilolite are much higher than for the original natural zeolite. Pre-activation of the zeolite at 350 °С allows to increase the content of Argentum ions.An increase in both the power of the US-radiation and the modification temperature makes it possible to increase the static capacity of the zeolite.It is shown that the process of modification of clinoptilolite occurs mainly in the transition region.

Today there is a problem of rational use of coal coking by-products, which can be partially solved by obtaining a variety of polymeric materials on their basis. The presence of valuable reactive substances (indene, coumarone, styrene, etc.) in this type of raw materials contributes to the solving of the problem. An important aspect is the area of application of the resulting polymers.