Temperature dependence curve of abrasion volume, abrasion breaking phase, construction and physical property data of cured SBR containing carbon black shows transition point and is devided into low (I) and high (II) temperature regions.
(1) abrasion in the low temperature region is caused by tensile break in the abrasion process of rubber molecular chain of rubber-state adhered to contact surface, and is controlled by the number of rubber molecular chain of rubber-state and suraface adhesion force.
Besies, abrasion volume,
A(I), is represented by the following exponential function of abrasion coefficient, μ(I).
A(I)=
exp{
a•μ(I)+
b}
(2) abrasion in the high temperature region is caused by tearing separation of rubber debris at the tip of contact area with the growth of micro crack generated by internal force in process of abrasion, and is controlled by carbon black volume, quasi-glassy state volume and density of ruber molecular chain of crosslinked rubber molecules phase.
Besides, abrasion volume,
A(II), is represented by the following exponential function of Trousers tear strength, Tr(II).
A(II)=
exp{
a•Tr(II)+
b}
View full abstract