“…Several studies have shown that the creep behavior of PBMs depends on many factors such as matrix content [ 6 , 7 , 8 , 9 ], particle size [ 10 , 11 , 12 ], stress [ 13 , 14 , 15 ], temperature [ 16 , 17 ], and humidity [ 18 , 19 ]. The importance of long-term properties for polymer composites are highlighted in recent studies [ 20 , 21 ]. Experimental results reveal that the entire process of creep deformation can be divided into three stages [ 22 , 23 ], namely the primary (transient) creep, the secondary (stationary) creep, and the tertiary (unstable) creep.…”