Chemistry Reference
In-Depth Information
E
(
)
1/
t
n
,
(37)
= −−
15.2 1
dd
surf
E
�
�
m
where
t
is index percolation, equal to 1.7 [28].
From the Eq. (37) it follows, that nanofiller particles (aggregates of par-
ticles) surface dimension
d
surf
is the parameter, controlling nanocomposites
reinforcement degree [53]. This postulate corresponds to the known prin-
ciple about numerous division surfaces decisive role in nanomaterials as
the basis of their properties change [54]. From the Eqs. (4)-(6) it follows
unequivocally, that the value
d
surf
is defined by nanofiller particles (ag-
gregates of particles) size
R
p
only. In its turn, from the Eq. (37) it follows,
that elastomeric nanocomposites reinforcement degree
E
n
/
E
m
is defined by
the dimension
d
surf
only, or, accounting for the said above, by the size
R
p
only. This means, that the reinforcement effect is controlled by nanofiller
particles (aggregates of particles) sizes only and in virtue of this is the true
nanoeffect.
In Fig. 6.12, the dependence of
E
n
/
E
m
on (
d
-
d
surf
)
1
′
1.7
is adduced, cor-
responding to the equation (37), for nanocomposites with different elas-
tomeric matrices (natural and butadiene-styrene rubbers, NR and BSR,
accordingly) and different nanofillers (technical carbon of different marks,
nano- and microshungite). Despite the indicated distinctions in composi-
tion, all adduced data are described well by the Eq. (37).
FIGURE 6.12
The dependence of reinforcement degree
E
n
/
E
m
on parameter (
d
-
d
surf
)
1
′
1.7
value for nanocomposites NR/TC (1), BSR/TC (2) and BSR/shungite (3).
