Abstract: A polymer concrete composition, preferably for decorative and shock resistant building structures and goods includes a binder based of polyfunctional unsaturated compounds, namely acrylated/methacrylated vegetable oil, preferably acrylated/methacrylated soybean oil in an amount of not less than 60 part by weight and at least one acrylatedmethacrylated monomer and/or oligomer in an amount of not more than 40 part by weight, and an aggregate blend. The polymer concrete composition based on acrylated/methacrylated vegetable oil has high wear and shock resistance with low shrinkage and can be used for prefabricated building decorative structures and particularly in civil engineering.

Abstract: The invention relates to an epoxy/rubber composition comprising an epoxy resin which comprises an epoxy compound X, the epoxy compound X has epoxy equivalent weight (EEW) from 150 up to 200 and viscosity from 2,000 up to 10,000 cps (25 C), a curing agent, a liquid rubber that is liquid at room temperature and comprises at least 1.5 reactive terminated group, a fluorine contained organic matter, selected from a group, including where: n=1-20; X=—COOH, —CONH2, —CON(C6H5)2, —CH2OH. b) CF3(CF2)nCOOH, where: n=7-9. where: n=3-20.

Abstract: A construction element for erecting a structure has a first panel extending vertically to form a wall and a second panel extending horizontally to form a horizontal partition when they are arranged in an erected structure, the panels together form a three-dimensional configuration and are connected with one another so that in the erected structure they extend perpendicularly to one another and are turnable to include an angle there between to reduce a horizontal extension of the construction element for transportation purposes.

Abstract: A mixture for making gaseous concrete includes Portland cement, slaked lime, ash, aluminum gas forming material, dispersed reinforcing fiber, water, and as the gas forming material and the dispersed reinforcing fiber, it contains aluminated glass fiber, with the following ratio of components in mass %: Portland cement 30-34, Slaked lime 3-4, Ash 18-22, Aluminated glass fiber 1-5, water 37-42, Hemihydrate gypsum 0.4-0.5.

Abstract: An electret composite comprising a polymer matrix material that contains particles of a piezoelectric material with deep trapping centers on the interphase boundaries between the matrix and particles of a piezoelectric material. The piezoelectric material may have a tetragonal or a rhombohedral structure, and the polymer matrix material may be selected from high-density polyethylene, polyvinylidene fluoride, and a copolymer of vinylidenechloride and tetrafluoroethylene. The composite has a potential difference>500V, lifespan>10 years, dielectric permeability?20, specific electric resistance?1014 Ohm·m; provision of deep trapping centers on the interphase boundaries with activation energy in the range of 1 to 1.25 eV, and stable electret charge.

Abstract: The invention relates to an epoxy/rubber composition comprising an epoxy resin which comprises an epoxy compound X, the epoxy compound X has epoxy equivalent weight (EEW) from 150 up to 200 and viscosity from 2,000 up to 10,000 cps (25 C), a curing agent, a liquid rubber that is liquid at room temperature and comprises at least 1.5 reactive terminated group, a fluorine contained organic matter, selected from a group, including where: n=1-20; X=—COOH, —CONH2, —CON(C6H5)2, —CH2OH. b) CF3(CF2)nCOOH, where: n=7-9. where: n=3-20.

Abstract: A hybrid piezoelectric composite comprises a layer of a polymer matrix comprising particles of a PZT group in a micro range of dimensions, which is sandwiched between two layers of a polymer matrix comprising particles of a dielectric material in a nano range of dimensions. The materials of both layers are polarized with electrothermal polarization. The polymer matrices of both component composites may comprise high-density polyethylene, polyvinylidene fluoride, polypropylene, or low-density polyethylene. The dielectric material of the first component nanocomposite may be selected from the group consisting of SiO2 and BaTiO3, and the ceramic particles of the second component are made from a piezoelectric ceramic material of a PZT group having a tetragonal structure.