Journal "Scientific Israel- Technologival Advantages" vol.18 no. 2 , 2016

            SYNERGETIC BASIS TOOLS AND METHODS OF PROCESS CONTROL

IN CAPILLARY-POROUS MATERIALS

 

M.A. Gamov, V.M.Zadorsky

 

Ukrainian State University of Chemical Technology, Ukraine, Dnepropetrovsk

nokassss@hotmail.com, ecofond@gmail.com

 

ABSTRACT

 

For solving a number of practical problems which are associated with the technology of impregnation a capillary - porous material, it is proposed to use superheated steam at atmospheric pressure as the working fluid to create condensation effect and control the quality and speed of impregnation. In this work are proposed hardware-technological design based on synergistic combination ages of heating, impregnation and drying, which significantly reduces capital investment and allows the use of engineering solutions for the impregnation of other capillary-porous materials (porous sintered materials, catalysts, construction materials, fur and leather products, textile materials and others.). There are shown the results of studies the influence of condensation process on the kinetics of filling with liquid the capillaries and pores, kinetic characteristics of the process, the depth of impregnation, the degree filling of capillaries, the ratio of  the volume impregnated capillaries to the their total volume and etc., which take into account the changes in the driving force of the process and its mechanism.

 

NANOSTRUCTURING OF CONCRETE MATERIALS

 

B.V. Gusev

 

Moscow State University of Railway Engineering, Moscow, Russia

l.a.ivanov@mail.ru

 

ABSTRACT

 

The article presents nanostructuring of cement systems due to introduction of ultra- and nanodispersed mineral additives. In this process, additional grinding of mineral additives is made in cavitaion installations during preparation of concrete mixtures. Nanostructuring provides compaction of concrete structures and increase of strength parameters 1,5 – 2 times.

 

 

ISOPHASE AND PHASE TRANSITIONS OF CELLULOSE

 SHORT REVIEW

 

M. Ioelovich

 

Designer Energy Ltd.,  Rehovot, Israel

E-mail: bd895892@zahav.net.il

 

ABSTRACT

 

Cellulose has complicated supramolecular structure consisting of nanofibrils, which are built of ordered crystallites (CR) and low ordered non-crystalline domains (NCD) in various CR/NCD ratios, from 4 for nanocrystalline cellulose to zero for amorphized cellulose. Moreover, crystallites have four main allomorphs, CI, CII, CII and CIV. In this critical review isophase temperature transitions in NCD and phase transition of cellulose crystallites, as well as amorphous cellulose, were described and discussed. It has been shown that due to structural heterogeneity the non-crystalline domains have three isophase temperature transitions, where the α₁ and α₂ transitions are caused by the occurrence of segmental mobility in dense mesomorphous and medium packed amorphous clusters, respectively; whereas the β transition is related to the mobility of small segments in loose packed amorphous clusters, which probably are located on the outer surface of nanofibrils. Under the action of water and other plasticizers all three isophase transitions are shifted to lower temperatures. Various crystalline allomorphs and amorphous cellulose can be converted into each other as a result of phase transitions, such as recrystallization, decrystallization, transitions between various crystalline allomorphs, etc. Important phase transition is a sol-gel process, when cellulose is dissolved and then regenerated from the solution. In this review mechanism of the phase transitions and their relation to isophase transitions of cellulose was disclosed.

 

 

NANOTECHNOLOGY IN PRODUCTION OF BIOACTIVE PAINTS, COATINGS

AND FOOD STORAGE MATERIALS

 

O. Figovsky, D. Beilin

 

Polymate Ltd.- Israel Nanotechnology Research Center, Migdal HaEmek. Israel

fgovsky@gmail.com

ABSTRACT

 

Present paper is devoted to creation of a new bioactive composite on a basis of silver nanoparticles. The biocidal effect of nanoparicles-modified paints and coatings is investigated. The structure and technology of biologically active nano-composites preparation is offered.

 

 

 

ENVIRONMENTAL FRIENDLY METHOD OF PRODUCTION

OF NANOCOMPOSITES AND NANOMEMBRANES

                                                     

O. Figovsky¹, D. Beilin¹ , S. Usherenko¹, P. Kudryavtsev²

                                                                                             

¹Polymate Ltd.- Israel Nanotechnology Research Center, Migdal HaEmek. Israel

²Holon Institute of Technology, Holon, Israel

fgovsky@gmail.com

ABSTRACT

 

New “green” technology is based on using an unusual physical phenomenon –superdeep penetration (SDP). Synthesis of a skeleton and formation of nanostructure is realized in metals, polymers and ceramics. Physical anomalies at the impact, which  appearing in conditions when relative depth of a crater exceeds 10 determining sizes of striker are considered . The influence of the pulse mode on metals and alloys provides reorganization of a material on sub-, micro- and macrolevels. Fibers of ultradisperse structure are formed. Interaction of chemical elements in the field of high pressure produces the metastable connections in large quantities and change of physical and chemical characteristics of the initial materials. Massive composite material from technical aluminum reinforced by fiber zones with reconstructed structure and anisotropy of electro conduction in mutually perpendicular directions in 2 times was obtained. Superdeep penetration is used for manufacturing of special composite metal materials with an unusual complex of properties. Products of interaction for example, carbon and silicon are saved in volume of preform and don’t organize harmful waste at manufacture. The new SDP method of polymer tracking membranes production was developed.. The method for manufacturing track membranes by piercing a matrix of a thin-film material with a flow of hard particles generated by an electric field is proposed as well.

 

ANTI-SALINE DEPOSIT NANOSYSTEM IN OIL PRODUCTION

 

E. Shahbazov, K. Jabbarova

 

SOCAR, Baku, Azerbaijan

eldar@socar.az

 

ABSTRACT

 

The paper deals with the development of multifunctional inhibitor preventing hardness deposition forming in oil-water flow in the process of production and conduction of field tests. Effect of nanosystems against hardness deposition on alkane and sulphanole agents and their compositions, as well as, that of this surface active agent (SAA) together with copper-nanoparticles were studied in this paper. These nanosystems prevent the agglomeration of saline crystals forming in produced water and prolong their induction period, as well as, generate protective cover on equipment. According to field test results of the developed inhibitor in production well N2946 of “Bibiheybatneft” OGPU, it was affirmed that multifunctional agents of nanosystem possess highly preventive effect against saline deposits and modify physical-chemical properties of oil for better. As such, after the application of composition of nanosystem, time between overhauls is prolonged from 27 days to 147 and recovery ratio increases by 12,5%.

 

 

 

PROSPECTS AND IMPLICATIONS OF STRUCTURAL INSULATED PANELS IN LOW-RISE CONSTRUCTION

 

S.A.Kolodyazhniy, R.A. Sheps , T.V. Shchukina

 

Voronezh State University of Architecture and Civil Engineering, Vooronezh, Russia

romansheps@yandex.ru

 

ABSTRACT

 

The research of pilot house at the site of the Voronezh State Architecture and Construction University confirmed the high insulating properties of structural insulated panels (SIP). The results allow recommending these constructions for use in the northern regions. The possible consequences of long-term operation of buildings, erected by the SIP technology, were considered. Presented data includes measurements of harmful substances released into indoor air spaces. Obtained dependencies allow predicting the aging of polystyrene, which is filled in the frame and panel construction.