Anticorrosive properties of epoxy coatings, impregnated with manganese-containing pigments

© Research India Publications 2015. Most inhibiting pigments, imparting high anticonosive properties to the primer modern metal materials, contain extremely oxidated chromium, and as a consequence, are toxic. Search for low-toxic pigments comparable on the effectiveness of the protective effect with chioiniuin-containing pigments remains today an urgent task. As a film-forming material, it was used the epoxy oligomer E-40 being widely applicable in the paint industry epoxy, for which, polyethylene polyamine served as a hardener. Calcining calcium manganite, manganite-co-precipitated calcium silicate, and manganese blue were chosen as anticonosive pigments, the properties of anticonosi\*e coating on the basis of epoxy oligomer E-40 pigmented with manganese compounds were investigated. It has been found that inclusion of the synthesized pigment into composition of coatings enhances their ability to inhibit undei’film corrosion of steel. It has been proposed compounds of anticonosive primers on the effectiveness of protective action, surpassing industrial counterparts. The paper investigates influence of the content and nature of manganese anticonosive pigments on the protective properties of epoxy coatings. It has been shown that in the region of pigmentation below the critical, there is an increase of auticonosion efficiency of coatings. It has been evaluated the critical volume content of pigment, developed the formulations of primers, coatings on the basis of which the effectiveness of corrosion exceed the industry analogue

Modification of the experimental setup of the FTIR spectrometer and thirty-meter optical cell for measurements of weak selective and nonselective absorptions

The improvement of the experimental setup based on a Fourier spectrometer Bruker IFS-125 and a 30-meter multipass optical cell is described. The improvement includes the cell equipment with a system of automated adjustment of the number of beam passes without cell depressurization and ensures the cell work at high temperatures

The dynamics of quasi-isometric foliations

If the stable, center, and unstable foliations of a partially hyperbolic system are quasi-isometric, the system has Global Product Structure. This result also applies to Anosov systems and to other invariant splittings. If a partially hyperbolic system on a manifold with abelian fundamental group has quasi-isometric stable and unstable foliations, the center foliation is without holonomy. If, further, the system has Global Product Structure, then all center leaves are homeomorphic.Comment: 18 pages, 1 figur

Hadron Production via e+e- Collisions with Initial State Radiation

A novel method of studying e+e- annihilation into hadrons using initial state radiation at e+e- colliders is described. After brief history of the method, its theoretical foundations are considered. Numerous experiments in which exclusive cross sections of e+e- annihilation into hadrons below the center-of-mass energy of 5 GeV have been measured are presented. Some applications of the results obtained to fundamental tests of the Standard Model are listed.Comment: 50 pages, 88 figures, accepted for publication in Rev. Mod. Phy

Woe from stones: commemoration, identity politics and Estonia's 'War of Monuments'

No abstract available