SCIENTIFIC ABSTRACT SHERMERGOR, T.D. - SHEROV, A.I.

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SCIENTIFIC ABSTRACT
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LWV/1126 - .11 -1 Absorption of' Unerg-y by Steel in Plastic Compression as a function of deformation are shown. The dependence of the entire absorbed ener6y on the work of deformation is shown in ?16.3. In Fi--.4 the dependence of the entire absorbed energy on true deformation is shown. In Fig.5 the dependence of the differential absorbed relative energy on true deform- ation is shown. The author concludes that at small,degrees of deformation, owin~~ to the smallness of the entire absorbed energy, relaxation processes do not play an important part. Processes responsible for the hardening of material are most important. In the case of large deformations, however, further deformation is accompanied by intense relaxation processes which level out the processes of hardening, and the absorbed energy decreases. There are 5 figures and 3.1 references, of which 8 are Soviet, 2 English and 1 japanese. ASSOCIATION: Sibirskiy rretallurgicheskly institut (Siberian Metallurgical Institute) SUBMITTED: March 13, 1957 (initially) and April 15, 1957 (after shortening) Card 5/5 5HE,R,v,-'-'RGIj'L~, T.D. (Stalinsk) Disnersion correlations for elasticity and pliability. PMTF no.1:96-102 My-Je '60. (MIRA 14:8) (Elasticity) SHE,R~ERGCR, -.P2--(StalinsA) Relations between c-.~rtain types of deformation. PYIN no.2:150-:52 6o. (KIRA 1-'-: 6) (Deformations (Mechanics)) 82339 0 0 5/139/60/000/03/034/045 AUTHOR: Shermerzor_,,__j,!tD E073/E335 TITLE: Calculation of the Distribution Function of Relaxation Constants for Elastic-viscous Bodies _7_(0 PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy, Fizika, 1960, No 3, pp 185 - 194 (USSR) ABSTRACT: For calculating the distribution spectrum the author startsoff from the thermodynamic equation of non- equilibrium mechanical processes.based on an earlier paper of the author (Ref 3). Disregarding temperature changes, this equation can be written thus (Refs 4,5).~ + Lyikem-k"e m 3.k Mk Eik 2ik - L14' jemll(rem where &. and E are respectively the stress and Xk lk strain tensors If. and c are their equilibrium xk ik Cardl/2 values and \V ik?m (s) and (4) iktm (s') are the tensors of kK 82339 S/139/60/000/03/034/045 EOZ~~E~32 Calculation of the Distribution Fun 0 f Relaxation Constants for Elastic-viscous Bodies the distributio:n.of relaxation constants s and of retardations sl ; L is the operator of the integral Laplace transform. A dot on top denotes a time derivative; the asterisk denotes a convolution on the section (0, t). The relaxation and retardation spectra are calculated by means of the following methods: sine (cosine) - Fourier and Laplace transforms; complex and real Stieltjes transforms; convolution theorems for Fourier transforms. There are I figure and 12 references, 2 of which are English and 10 Soviet,, ASSOCIATION: Sibirskiy metallurgicheskiy institut imeni S. Ordzhonikidze (Siberian Metallurgical Institute imeni S. Ordzhonikidze) Pr SUBMITTED: July 24, 1959 Card 2/2 0 0 S/126/60/009/02/001/033 AUTHOR: Shermerxor~ T.D. E031/E335 TITLE: The Calculation of the Distribution Functions o-f Relaxation Times for Elastic After-effec PERIODICAL: Fizika metallov i metallovedeniye, 196o, vol 9, Nr 2, pp 161 - 168 (USSR) ABSTRACT: Relaxation relations governing the relation of stress and deformation tensors obtained with the aid of irreversible thermodynamic processes are extended to the continuous relaxation spectrum. Expressions are deduced by which the distribution functions of relaxation times can be calculated from the experimental curves d(t) and e(t) for a number of time dependencies. In the elastic deformation of real bodies relaxation processes can have different intensities and so real bodies possess relaxation spectra. To find the relation between the characteristics of the spectrum and the mechanical properties expressions for the stress and deformation tensors which are obtained with the aid of irreversible 0 t h ermo dynamic sl 10 ec Weecf, the variation of temperature Cardi/4 being ignored. These expressions are generalized and 6 &') 20 S/126/60/009/02/001/033 POA14E~~5 The Calculation of the Distribution Func T n Relaxation Times for Elastic After-effect the passage to the limit is made. Further generalisation to the case of a continuous spectrum introduces distri- bution functions for the relaxation times and relaxation frequencies, in terms of which the above tensors can be expressed. Before calculating the distribution tensors for the relaxation frequencies, it is shown that distribution tensors corresponding to the stress tensor and the deformation tensor are not independent, by considering the loading due to an impulse. The relations obtained are illustrated for the case of a standard linear body. The calculation of the distribution tensors for the relaxation frequencies is illustrated by examples in the first of which the tensor for the velocity of deformation has an exponential form: iU(t) = to exp(pt) Card2/4 The Calculation of the Distribution for Elastic After-effect S/126/60/009/02/001/033 E2?14E~39f Relaxation Times Fun I n In the second example the velocity of deformation is constant in the interval (0, t 1 after which the deformation is fixed: E (t) = LO 11(t) - 1(t tA ik ik (29) (where l(t) is the unit step function) The distribution tensor for relaxation frequencies can be determined from relaxation curves, which are obtained experimentally but it must be remembered that expressiorB derived are valid only for small deformations, not taking the system beyond the elastic limi-t. The corresponding cases to those above,urhen the tensor for the velocity of stress (giving the retardation spectrum) is taken instead of the tensor Card3/4 for the velocity of deformation, are briefly conddered. K 68~ 6 2 G' S/126/6o/oog/02/001/033 E03l/E3 The Calculation of the Distribution Functions oPRelaxation Times for Elastic After-effect There are 14 references, of which I is English and 13 are Soviet. ASSOCIATION: Sibirskiy metallurgicheskiy institut im. S. Ordzhonikidze (S;kberlan Metallurgical Institute im. S, Ordzhonikidze,) SUBMITTED: June 2, 1959, initially, September 28, 1959, after revision. Card 4/4 0~1 1;~L 89699 go?), Lj 0 16 S/139/61/ooo/001/007/018 E030/E435 AUTHOR: Shermergor, T.D. TITLE- Calc;ulation of the Distribution Function of Relaxation Constants in Terms of the Real Part of the Complex Elasticity for Visco-Elastic Solids PERIODICAL: Izvestiya vysshikh uchebny zavedeniy, Fizika, 1961, No.1, PP-77-83 TEXT: A method is developed for calculating the distribution of relaxation times of visco-elastic solids from the frequency dependence of the real part of the elastic modulus. As an example, the distribution is assumed to be 1 2 (th a x + 1) where a and wo are parameters and x = in-~- W being the 0 9 . radian frequency. This simplified distribution gives very good agreement with experimental results of Ke Tin-Suya on poly- crystalline aluminium, as shown in Fig.1 where the abscissa is where X equals ('Xo + x) and also equals W U/RT Card 1/4 In I-, a e 89699 S/139/61/000/001/007/ol8 Calculation of the Distribution ... E030/E435 The value of -X 0 giving the best fit to the data is 10.6~ U is the activation energy and T the absolute temperature. In the general case, the relaxation spectrum is obtained by Fourier decomposition from the modulus M at a radian frequency w as follows. The real modulus is given as 2 M'(W) - Mo 0) ~(s) ds (2) 2-2 s + w 0 where the form of (P(s) must be found. The value of dH(x) is calculated, called P(x), and transformed to dx P(U) d(u)T(u) (8) where an iut G(u) 2 ch2t dt (9) CO Card 2/4 3/139/61/000/001/007/018 Calculation of the Distribution ... E030/E435 and the function F(u)-so determined is then transformed back to F(y). F(y) gives the required distribution since it is shown that H(x) W TK(x-y)F(y)dy (5) where -00 K (x-y) C -1 ( th _Y1 + 1) 2 fx By taking first and second moments of the redistribution function F(y), it is shown that the first moment is zero and the second is T(2 1 2 CLY and it is also seen that w0 = so. Curves of the relaxation constant distribution for polycrystalline aluminium are evaluated and plotted. There'are 2 figures and 7 references: 6 Soviet and 1 non-Soviet. Card 3/4 89699 S/139/61/000/001/007/ol8 Calculation of the Distribution ... E03o/E435 ASSOCIATION: Sibirskiy metallurgicheskiy institut imeni S.Ordzhonikidze (Siberian Metallurgical Institute imeni S.Ordzhonikidze) SUBMITTED: December 4, 1959 Fig.l. Dispersion'curve of the real elastic modulus of polycrystalline aluminium, according to the data of Ke Tin-Suya (points) and according to the dispersion formula quoted above (full line). G is the real elastic modulus at w. oil .Card 4/4 S/207/62/000/006/oi6/025 On the temperature ... E031/E492 almost completely coirici(le, so that for the analysis of experimplital lata th" rl,eologicAL model can be used. Both methods giv(' tllt~ 9W-z Val-e of' the temperature at which the oscillations cease. to be per-iod-ic ai-d I-ecome nperiodic. This temperature depencts on both the physical. properties of the material of the pendulum ancl oil the geometry of the Bystem. There are 2 figures. SUBMITTED: MaY 3, 1962 W; Card 2/2 ACCESSION NR: AR4042132 8/O124/64/OOO/0D6/VO33/V033 SOURCE: Ref. zh. Mekhanika. Abe. 6V245 AUTHOR: Shermergor, T.-D.. TITLE: Temperature relaxation in solid bodies CITED SOURCE: Sb. Relaksata. yavleniya Y met. i aplayakh. M., Metallurgisdat, 1963, 27-30 TOPIC TAGS: abaorption coefficient, temperature relaxation, irreversible proceent irreversible process thermodynamics, heat conduction equation TRANSLATION: 'Mvea a comparison of two calculation methods of absorption coef- ficient, one or which is based on themodynamics of irreversible processes, and the, other - on the que of heat-conduction equation. Considers propagation of a flat longitudinal vaya in an unlimited isotropic medium, in which the only relaxation I mechanism in th,~,rmal conduction. It is found that for high frequencies the wave in isothermal, arA for small - adiabatic; the propagation speed of these wavea in determined. Gii4s a comparison of considered temperatvre r2larstiom with-b-gh*viar' .S!1rd 112 Accmiom NR2 A.R4o42232 of a ttandard 11mear body, expressions for adiabatic modulus of manifold compres- sion) and rel&xation time, caused by relaxation of heat flow in a longitudinal xa,fe. Expressions for internal friction, coefficient of absorption, and its temperature part at low frequencies are obtained. For usual sonic and ultrasonic frequencies the longitudinal wave can be considered adiabatic. A general expression is given for stress teneors in the case when, in the considered frequency range, ' there can also Dccur other relaxation processes (defects of moduli and relaxation tizes determine the relaxation mechaniam, which is not caused by thermal conduction)e SUB CODSI TDI MS ZWLs W Card 212 ACCESSION NR: AR4043999 S/0058/64/000/006/EO41/EO41 SOURCE: Refe zh. Fizikaq Abe. 6E307 AUTHOR: Shermergor, T. D. TITLE: The phenomenological theory of internal friction CITEE SOURCE: Sb. Relsksate. yavleniya v met. i splavakh. M., Metallurgizdat, 1963, 33-39 TOPIC TAGS: internal friction, thermodynamic theory, irreversible process, nonequilibriuM stress tensor, deformation, isotropic medium TRANSLATION: On the basis of the thermodynamic theory of irreversible processes there is obtained an expression for the nonequilibrium stress tensor during small deformations of a uniform isotropic medium. It is proposed that in the medium a active only one relaxation mechanism ( diffusion, grain-boundary, dislocation, etc.). The obtained expression is generalized for the case of a heterogeneous 1 medium (for simplicity, calculations are given only for the stress deviator). There is given a calculation of the relaxation-time spectrum. SUB CODE: SS, TD ENCL: 00 Card 1/1 SHEW-ERGOR T.D Thi,rd all-Union interuniversity conference on relaxation phenomena in metals and alloys. Izv. vys. ucheb. zav; fiz. no.1:176 163. (MIRA 16-5) 1. Voronezhskiy gosudarstvennyy universitet. (Metals-Congresses) 6.1. '~',D. (Vororiezh) ..L~S!~Kovl Higzi-terapera,~ure rnal friction in t'i-le ca!3e of longitudiral os- cillations. ?!-,~F no.3:20-25 MIY-Je '63. (I-ORA 16:9) ( Fharmod.1,-namic.3) (Irrcvers-*~blo pmr-l-so.-,s) SOURCE-, Ref . Z'h. Fixilta, Abe. 73246, a AUTHORSt Shezmergore T. D.; Mesbkov, S. 1. TITLEs Phenomenological description of high-t9nerat rnal'~- Ke-Aints friction CITED SOURCE: Sb. Relaksats. yavleniya v. not. i splavakh., mef Metallurgizdat, 1963, 46-52 TOPIC TAGSt internal friction, shear-stress, shear resistance, TRANSLATION: A physical analysis of*th quodels-us ed for a pheno- menological description of higbr-teFS"ratUre infernal- friction (I Fi) is presented. Pheological . models are considered and-'--*t. is shown that in spite'of.their simplicity and clarity 'thdy-,cannot be recom- 1~ torsion, stress relaxation, model theory L 13001-65 [-ACCESSION NR: AR4046008 *-LESHKOV, S. 1. (Voronezr,,'; POSTNIKOV, V. S. (ftrotezti); SHEW-ERGOR, 1'. (Voronezh) Temperature dt:rendence of Lhe internal friction of a standard limiar solia under heavy damping conditions. Izv. AN SSSR. no.3:90-95 164 MY-Je I OxIft.. 1,/., L 17117-65 ACCESS NM AP5000643 S/0181/64/006/012/3502/3608 AUTHOR: Turkov, S K.; Shermergor,_ T. D. TITLE: Internal friction in the interaction betwerin impurity atoms and edge dislocations SOURCE: Fizika tvardogo tela, v. 6, no, 12, 1964, 35024608 TOPIC TAGS: dislocation study, dislocation motion, internal frictionj impurity.move- ment, edge dislocation ABSTRACT: The authors calculate the internal friction due to the diffusion of impurity atoms in the stress field of an edge dislocation that executes harmonic oscillations in' 1 the slip plane under the influence of an external force. An oscillation amplitude averaged over the -dislocation length is used to simplify the calculations, and inertial forces are neglected. The frequency and concentration dependences of the internal friction due to this mechanism are investigated and no limitation Is imposed on the Impurity concentra- tion. The results show that the dependence of the Internal friction on the impurity cork- centration and on the free length of the dislocation Is more complicated than obtained by C rd 1/2 71" L 17117-65 ACCESSION NIL AP5000643 J. 0. Kessler (Phys. Rev. v. 106, 654, 1957). At large Impurity concentrations the In ternal, friction is Inversely proportional to the concentration and does not depend on the free dislocation length. In the caseeflow concentrations and for high frequencies the results are close to those of Kessler. At very high fre(Pencies, account must be taken of the inertial forces. Orig. art. has: 3 figures and 28 formulas. ASSOCIATION: VoronezhBidy politekhnicheakiy institute (Voronezh Polytechnic 108titUte). SUBbUTTED- 21Apr64 ENCL: 00 SUB CODE: S9 NR REF BOV: 002 OTHER: 004 2/2 Card DARINSKIY., B.M.; SHERMERGOR, T~Ds Temperature relaxation in cubic structure polycrystals. Fiz.met. i metalloved. 18 no.5:645-653 N f64* 1. Voronezhskiy politekhnicheskiy institut. (MIRA 18,.4) "FM L 7o82-66 EWTW/T/EWP(t)/'EWP(b)/EWA(c) JD ACC NR: AP5027274 SOURCE CODE: UR/0207/65/000/005/0084/0089 AUTHORS: Darins B. M. (Voronezh); Shermergor, T. D. (Voronezh) ORG: none TITLE: On the theory of diffusion6relaxation in polycrystals SOURCE: Zhurnal prikladnoy mekhaniki i tekbnicheskoy fiziki, no. 5., 1965j 84-89 TOPIC TAGS: solid state, polycrystal, diffusion relaxation., crystal ABSTRAM This paper is an extension of the theory of diffusion relaxation in poly- crystals, first proposed by K. Ziner (Sb. BUprugost' i neuprugost' metallov" Izd. inostr. lit., 1954). The authors present an exact calculation of the intensity of the relaxation process in polycrystals of arbitrary crystallographic symmetry by taking into account pair correlation of K. Ziner between crystal nuclei. Calcula- tions are based on the not of equations which describe an elastic-diffusion system cle v ViDikVkC 7- 1 a i RT VjeDik0vkbtmutm=-q VkX1k1MU1M-Vkbjkc=-/j+ (1.2) bik = Oalk 8C Ijklmy1my Tim ='Oelm ac (1.3) di Dik Diko (1 C) X. RimTaTim, 81m '/2 (Ulm + uWY Card 1/2 L 7o82-66 ACC NRt AP5027274 ffere e is the concentration of Impurity atoms, n and N the number of impurity ator and total atoms per unit vol respectively,, Dik - coefficient of diffusion,, D ik its value at c--..%O, bik and Yik - concentration tension and deformation tensors respectively, Vo - the molar volume, R - the gas constant uik = ui,k - distortion tensor, u - the displacement vector, E deformation tensor,, q - strength of A impurity atoms source, and f - force density. The authors derive expressions for: a) the degree of relaxation (first order approximation), b) complete defects in the moduli for overall compression and shear, and c) the time relaxation distribu- tion function. The derived expressions are applied to the system Fe - C containing 4.5% at 1250C. The calculations for this system yield the degree of relaxation -3 -6 2 -3 1.5 x-10 and D = 3.2 x 10 see/cm . For crystallites of ev 10 cm. diameter, the peak of inner friction corresponds to a.frequency ofe.1 1 cycle/sec.' A deriva- tion. for ascending diffusionfor a nonhomogeneous anisotropic zqdiu~m is appended, Orig. art. hast 42 equations. SUB CODE: GC/ SUBM DATEt 13Dao64/ ORIG REF: 010/ OTH REF: 003 nw ~2/2 body. a E C) I r '01 AN L 33hh-66 DIT (1) /E7tTT(m)/T/19.T (t) /W (b) IWA (c) ACCESSION NR: AP5017299 1JF(c) JD/JG/GG ~AUTHORS: Turkov, S. K.; Shermergor, T. D. TITLE: Internal friction in a face-centered ,reorientation of bivacancies iSOURCE: Fizika tverdogo tela, v. 7, no. 7, TOPIC TAGS: vacancy cubic lattice due to 1965, 2o64-2o6g internal friction, crystal lattice structurp,, crystal ;X1 IABSTRACT: The purpose of the paper was to calculate theoretically 'the internal friction produced by the reorientation of bivacancies In an external field, bLnd to investigate the peculiarities of the internal-friction peak produced by these bivacancies. The authors determine the kinetics of the internal friction due to the change in the concentration of the bivacancies having a specified orientation under the influence of.applied external stresses. Is is shown that the width of the bivacancy internal-fricti6n- peak depends essential on the orientation of thearyRtallographic axes relative to the ap- Card 1/2 L 3344-66 ACCESSION NR: AP5017299 plied stress. The amount of lattice distortion is calculated to es- ~1 timate the magnitude of the relaxation peak. It is shown that the ;reorientation of the bivaaancies is characterized in general by two:- ,relaxation times, differing by a factor of appro imately 1.5 The ?Y% results are compared with experiment for copper silver nd It is concluded that to reconcile the experiment 1 and theoretical-..., .data it is necessary to assume that during.the quenching an appreei..'i - :able part of the vacancies condenses into bivacancies. Orig. art.1'- has: 20 formulas and 1 table. ASSOCIATION: Voronezhakiy-politekhnicheskiy.institut (Vor-one- Z lPolytecbnic Institute SUBMITTED: 18Jan'65 SUB COMO ENCL: 00 SS INR REF SOV: 000 '-ommi., o*.. Card 2/2 'T 3J,.; T J~, IUP?MVp Erfect of' th- ;i1rAnEr -~n th- backirround ol, intc~rnal fr~~ctlon. ~lz. 'wer. ~-IFi 7 r:,-j.IC--,2952.-~q57 0 `65. (NJFIA 1, Voronezhsk~.-y poItteklinichos~Jy iristit:.,t. 23677-66 ';;-,*IT (m) /T/EMP ( t IJP(c) jD ACC NRt AR6oo5218__ SOURCE CODE: UB/0058/65/000/009/E)D57/ED58 AUTHOR: Meshkairy I. S.; Shermergor) To D. TITLE: On the description of the internal friction in solid bodies with the aid of rheological models SOURCE: Ref. zh. Fizika, Abs. 9E489 REF SOURCE: Izv. Voronezhsk. gos.-p2d. jR-:La,., v. 44, 1964.. 1-16-123 TOPIC TAGS: internal friction, rheologic property, elastic deformation, bydrostatic pressure shear stress, relaxation process, TRANSIATION: It is shown on the basis of an analysis of experimental results that to describe the relaxation of shear stresses it is necessary to use a rheological model of the Maxwellian type, and for bulk stresses the model of standard linear body (with a single relaxation time). Expressions are obtained for the internal friction (IF) and the dynamic moduli under shear and bulk deformations, and also for the case of a tension-compression deformation. In the latter case the form of the dependence., and consequently also the form of the dependence of IF, is determined by the ratio of the relaxation times, corresponding to the shear and to the bydrostatic compression. Certain generalizations are made for more complicated rheological models. V. Verner SUB CODE: 20 Card L 2662~-66 EWT(l)/EPF(n)-2/ETC(m)-6 IJP(c) WW ACC NR: AP5025371 SOURCE CODE: UR/0181/65/007/010/2952/2957 AUTHOR: T.,kav. S. K., Shermergor. T. D. ORG: Voronezh Polytechnic Institute (Voronezhskiy politekhnicheskiy institut)- TITLE: The effect of stress distribution on high-temperature noise due to internal friction SOURCE: Fizika tverdogo tela, v. 7, no. 10, 1965, 2952-2957 TOPIO TAGS: internal friction, metal, stress distribution, crystal vacancy ABSTRACT: The high temperature element of internal friction of metals represents a series of peaks superposable on a curve growing monotonically with an increase in temperature. The high temperature noise. caused by vacancy diffusion between block boundaries or crystal grains was calculated. Unlike the similar Escaig calculation the possibility of stress redistribution caused by the irregu- larity of diffusion currents is considered. This leads to a considerable ircreaseI in noise in the mean T-quency ranges. With low fre uencies of w internal fric-!,. tion in both cases,-- with highfrequencies Orig. art. has: Card 1/2 L 26622-66 Z - - - - - - - - - - - - - - - - - 1: U7211'-66 ACC NR, AF6o18524 SOURCE CODE: uF/O1B2/66/OO8/oo6/167o/j67 6 AUTHOR: _Turkov, S. K.; Shermergor, T. D. ORG: Voronezh.Polvtechnic Institute (Voronezbskiy politekhnicheskiy Institut) TITLE: Effect of screw dislocations on the internal friction 9f para-elastic bodies SOURCE: Fizika tverqogo tela, v. 8, no. 6, W6C,__i~~O 7CI TOPIC TAGS: crystal"dislocation phenomenon, internal friction, crystal vibration, elasticity theory, elastle -modulus, crystal lattice distortion ABSTRACT: In view of the fact that the mechanism of vibration-dislocation ener&v dis- sipation by the elastic-polarization cloud produced in para-elastic bodies, the authors calculate the Internal friction due to the deceleration of vibrating screw dislocations by relaxation of their stress fields in a medium possessing properties of a standard linear body. It is assumed that the elastic polarization of the medium is the only effective damping mechanism. The screw dislocations are assumed to vibrate under the influence of periodic external stresses and the amplitudes of their oscillations are considerably smaller than the distances betwqen the oscillation nodesi T~.e relation between the internal friction of this type ard the defeat of the modulus of the medium or the amplitude of the applied stress is determined and it Is shown t4at. the ratio of the height of the dislocation peak to the peak of the dislocation- free body decreases bath with Increasing defect of the modulus of the medium, and with: Increasing amplitude of -the applied stress. The results are found to be similar to 1f.rd .112 A L_~ 4-i S/081 '62/CGO/018/048/059 Bi 6o/BV18o AUTHORS: Vizell, A. 0., Shermergorn, 1. M., Tyu-lenev, S, S. TITLE: Synthesis of polyethylene terephthalate PERIODICAL: Referativnyy zhurnal. Khimiya, no. la, 1962, 503, abstract 1BP62 (In collection: -Materialy 1-y ~.'onferentsii molodykh nauchn. rabotn. g. Kazan', 1959- Sekts. khim. Kazan#, 1960" 27-34) T-IXT: Wlays of reducing tile amount of glycol brought into the reaction and of replacing purified N 2 by commercially pure 112 or air were investigated in order to develop a technology for the production of polyethylene terephthalate (PETP) using terephthalic acid dimethyl ester (MIT) as.the raw imaterial. These investigations proved that the consumption of ethylene glycol can be reduced(from three mols to two) by introducing the DMT part at a time, and that it is possible to use'-dommercially pure N2 or air (instead of purified N 2)1 triphenyl phosphate (I) at the rate of 0.4-3ia of the WIT being psed as the antioxidant.. The relation of the Card 1/2 s/..Qp1/62/ooo/o1a/G48/C59 Synthesis of,polyethylene B1.600186 reaction ratOl'and quality ot the product obtained 'to the amount of I introduced was studied (the'optimum amount of I being 0.75" of the /0 amount of M11T). A new solvent (40ij phenol and 60:/,, dichlorethane), which has good solVc~nt ability at'about 200C, was found'fbr determining the molecular welght of the PETP from the viscosity and Ifor fractionation of the polymer.-'EAbstracterte-note: Complete transfaltion.] Card 212 KUZNMOV, Ye.V.; VIZELI, A-O.; SHIRMERGORN, I.M.; TYULENEV, S.S. Relation between the molecular weight of polyethylene terephthalate and.-the-viscosity of its solutions in a mixture of phenol and dich- loroethane. Vysokom. soed. 2 no.2:205-209 F 160. (MIRA 13:11) 1. Knzanskiy khimiko-tekhnologichookiy institut. (Terephthalic acid) KUZNETSOV, Ye.V.; SHER~ERGORN, I.M.; BELYAr-,.VA, V.A. Synthesis of polyester3 based on trivalent phosphorus acids by condensation polymerization at the interface. Trudy KYHTI no.30: 70-76 162. (MIRA 16:10) KUZNETSOV, Ye.V.; VIZELI, A.O.; TYULENEV, S.S.; SMRMERGOR14, I.M. Stabilization of polyethylene terephthalate. Trudy -KKHTI no.30: 82-88 162. (MIRA 16-10) S/0190/054/0006/001/0031/0033 AUTHORS: Kuznet:iov, Ye. V.; Gill, il. P.; Shermer.-orn, !. M.; Kuznetsova, I'S. F. TITL_,': Synthesi's of polycoters and poly;~.-,4dez or. the basis of nitronhthalic acids by interfacial wllycondensa~ 1 tion SOURCE: Vy-*3oI-omoIekulIyarny-*ye soyedineniya, v. 6, no. 1, 1964, 31-33 TOPT C TAGS: synthesis, polyester, poly~Liidc, polycondensation, interfacial poly- condensation, nitrophthalic acid, dichlorides of n-itrophthalic acids, terephthalic acid ABST:?ACT: Solutions containing 0.2 :,.oI./Iite- of dichlorides of terepht-halic-, Q, nitroterephthaiic-, 4-nitronhthalic-, a.%d `-nitrophthalic acids in n-xjlene -nare reacted with aqueous solutions of 2,2-d~-(/,-o-x-j,-,hanyi)pronane (OPP) or hexa:_-e-.hy1- -nediam-ine (PON of the sa-me molar in the presence of 0.45 -'01/14-ar of NaOIH. The synthesis vms conducf,;-c! ~n a fi-nssk, .,.,ith 10 minutes of energetic m.echanical stirrinj. Foliov;inl- this, ~'-e obtaIned polyesters or polyam.-Ides were separated by filtrat-ion, washed with water, and dried to constant The yl~ld of the polyesters, obtained by the J_,nteraction of 'the dichlorides of nitro- terephthalic and 4-nitro-oln'thalic acids aith OPP amounted to 86.8 and 16-/3, fheir Cord 1/2 ACCESS-70N NO: AP40091,46 I resDective sDecific viscosities for 0.5~- sol'u'Lions Ln tricresol averaging 0.072 and 0.019. As to the polyamides sTntLesized from the dichlorides of nitrot-ereT)h- thalic-, 4-riitrophthaulic-, and 3-nitropht-ha-lic acids with Ma.), their yields L"mounted to 88.0, 84.2, and 76.6'~o', with resp,2ctive sDecific viscosities of 0.5P/~o solutions in concentrated sulfuric acid averagin,- 0.352, 0.280, and 0.223. The higher yields and viscosities registered in the poiyef-,ters derived from the dichloride of nitro- terephthalic acid as compared with the onus obtained on the basis of the dichlor'de of 4-nitrophthalic acid is attributed by the authors to the fact that the latter ingredient has its nitro group located in a meta-position in respect to the chloride group. A similar trend, although on a less pronounced scale, was observed J.n poly- condenoation producto of dichlorides of nitrophthalic acids with -171M. Orig, art. has: 2 tables. ASSOCIATION: Kazanskiy khimiko-tekhnolo6~.cheskiy institut im. S. Y. Kirova (---:azan Chemical-Tecl-,nological Institute) SUB.1,11TTED: 07jul62 DATE ACQ: 1OFeb64 _771CL: 00 SUB CODE: CH NO P =.- sov r oo6 OTHER: 005 Card 2/2 A L 11522-& ACC NR.AP6003.872 AUTHORS: Shermeradvi~- M,j- K-A Yu. B. for OrganieChemistry, AN SSSR.'X~zanl (Institut organioheskC17 ORG: Institute khimii AN SSSR 4~- TITLE: A study of interfacial esterification of polyvinyl alcohol SOURCE: Vysokozoleku1yazTWye sayedineniya, v. 7# no, 12, 1965j 2156-2-159 TOPIC TAGSs. asterification,, polywirql alcohol,, polymer, reaction mechanism ICAACII.L& z ABSTRAM The interphass esterification of polyvirql alcohol with benscyl chloride vas studied. The effects of different organic solvents and different concentrations of benzoyl obloride'lon the degree of esterification vers determined. The enterifica- ti~n--waa caririedf-o--ut by adding Na;fA and bensoyl chloride (dissolved in an organic solvent) to an aqueous solution of polyvizWl alcohol, and by rapid stirring of the resultant mixture. The experimental results. are presented in tables and graphs (see Fig. 1). It was foundthat substitution of K* for Knob bad a negligible effect on the degree of saterification. The degree of saterification increased with the solubility of the polyvinyl benzoate in the iorganic solvent and with increase of the gli-11 concentration in the aqueous phase, but it vas independent of the temperature and the duration of reaction, The experimental results are interpreted r.A 34& VWs SOURCE CODE: UR/0190/65/007/012/2156/2159 L n522-66 CC P& APMOM wait" PIC. 2. Relation between the degree or esterifteation (A) of p virql alcohol an the ratio of bensoyl chloride to polywirWI alcohole in terms of a diffusion-solubility mechanism. Orig. art. has: 3 tables and I graph. SUB COM U/ SUB'M DALTE: OlFeb65/ ORM RXFt 004/ OTH REFt 004 AL-~507-66 -&4T(M)/&4P(j) RM ACC NR: AP5028489 Lo / SOURCE CODE: UR10286165109010201006610066 '1~7 ttq. 50 microamp, varies within 30 -160 ohms; r2l often changes from 450 ohms to 50 kohms,.- r2,z lie.3 within 200 ohms to 15k,hms. The family of ci-,rrent-amplffication -factor characteristics :~'L'(10T estimated from the characteristics r2l('e" and r221," 1 permits .-k "k. Card 1/2 SOVI/ 112-59 - 3 -59 39 Selection of Supply for Type SID Transistors TEat Amplify Weak Signals determining the region where C4-> 1. The Hne of maximum values of -.4, lies within the rarge of 'e values from 20-60 microamr), and shifts toward higher ,values of le when ---k increases, Stability is determined by the expression E " nb 1, where (kob is the re-verse-&--ection amplification factor. 0( 6)~ Stable operation of the amplifier -is ensured with -7 k< 3 ma. Various transistors show a v-,-;de spread. The circLit stability can be easily designed on the basis of the reduced curves of r;k and -I-. - By analyzing the current amplification factor K.;., power amplification factor Kp, and voltage- a.mplification fact,?r it can, be f--und that Smaks !::;: 0. 6-0. 7 which corresponds to the optimi--m conditi-:,ns for Ki, Kp, and KL-. Transistor rejection can be eas-I'lly done on the basis Lf fcur--vr,'.--A meas-,~,--renaents. M. S. V. Card 212 -~-77 c t ion ot~' Of Se:-lico!-1,c~or Triodes +',le :Let'.od jul--ct on te t i cs y vYsol-Och-,st otny--h triodov Po ;~erekhodnykh PEF,T -)!)--T 7 ~T TT- ir 0 L AE S T R!, C T p j~ 1, 0 f 0 d o determinJn.-- tl-.e a.-. function 'of t.`--O jun-ction- c t e c S o C e i c 0? 1 d I:c t 0 rtriodes, directly Fo r t 0 calculation of the i cy 1 of' the plaase 2hift of t,,r. cutoff bind 3;' t'- hi~;h-freqlucncy parameters of t~A- v!' '.":-.t triole circuit diagram ro,7,ograjns ~Ipre cam,i;iled in accordinq, to- the data obtained. In order to 4111-strate the met'nod advanced ir this jaoer U-e results o"f t,ic- investi,--ntion of a Cl,l)--t--iode are Car,! 1 12 1)!' t 11,;0 T ~ , I . A of 4-c. v:,i*,;(.,; )t, ~ Lk fc,