SCIENTIFIC ABSTRACT MALKEVICH, S.G. - MALKYEL, G.E.

• Document Type: CREST
• Collection: Scientific Abstracts
• Document Number (FOIA) /ESDN (CREST): CIA-RDP86-00513R001031820017-8
• Release Decision: RIF
• Original Classification: S
• Document Page Count: 100
• Document Creation Date: November 2, 2016
• Sequence Number: 17
• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

Study of ...
zo
-ZOO -?Ov 0 100
21.136
S/190/61/003/004/011/014
B101/B207
200 -200 -100 a 100 -200
t,.c Fig. It. Oc
Card,6/7

Study of ...
Fig. 4. Function between the
logarithm of the maximum f
m
of frequency of high-frequency~."
HF2 and medium-frequency- 7
IAFR relaxation losses of
~
fluoroplasts and the recip-
rocal value of absolute tem-
perature. Legend: 1) MPR
for F-21 2) IJFR for SF-I I
3) IAFR for SF-2; 4) MFR
for SF-3; 5) HFR for SF-3-
Card 7/7
Flp
3.0
e.L.LJ6
S/190/61/003/004/011/014
BIOI/B207
9 y

14-1400 28985 S/191/61/000/011/001/008
15- 9 r11 0 B110/B147 ~
AUTHORS: Sazhin, B. I., Malkevich, S. G.., Chereshkevich, 1. V.,
Dmitriyeva, N. S.
TITLE: Study of dielectric losses and penetrability of fluoroplasts
PERTODICAL: Plasticheakiye massy, no. 11, 1961, 3-5
TEXT: The effect of the composition of copolymers of tetra- (I)and
trifluoro ethylene (11) on e and tan6 is investigated. Polytrifluoro
ethylene (III), LIP 2-CPHIn' has a great dipole moment and, at room
temperature and low frequencies, a dielectric penetrability of 12-5.
Since e of polytetrafluoro ethylene (IV) is only 2.0-2.1t the authors
tried to increase E by copolymerization of I -with 11, and of I with II
and hexafluoro propylene (V) (Table 1). 1 and tan6 were determined
according to B. I. Sazhin, P. ff. Shcherbak (Ref. 2: Zav. lab., no. 2
(1960)). The dependence of f- and tan6 on the concentration of (II) was
calculated by the dielectric polarization theory (Ref. 6: see below).
According to this, the interaction of polar groups belonging to-one chain
tard I

28Y85 S/191/61/000/011/001/008
Study of dielectric losses and ... B110/B147
may be estimated. According to Ref. 6, it holds for low frequencies:
(2a + 1) (1 - nD) 4.
& (AD + 2) ~~ _F
Here, n -nu .mber of polar monomer groups in 1 CM3; Pa. 11 ef - effective dj~
16
pole moment of these groups; K -1.638-10- erg/degreel T -absolute
temperature. For calculating s, it is necessary to'kno:ln 2, n, and
D -Is
Vef was determined (a) from E of III and found to be 14 .10 9 and (b)
from e of the copolymer containing 3-5 ~,, of II- In the latter case it
18 /4- ____ -_ 2- -
amounted to 1-41-10- cgs unite. In 6 c. A/2 + + (nD /2) (2),
2 14 2
A- (n D -5) +10 -11,f*n (obtained from Eq. (1) at T -2930C). The
theoretical concentration dependence of the f- values of copolymers takes
a straight course for 0-25 moles of II. For a content of II