According to our previous paper, rubber deformation and crazing
occur mainly in Fracture III (5).
They reported that impact strength improvement was caused by crazing
in the case of the MS/SBS system, and by the voids generated in the neighborhood of particles in the case of PE/CaC[O.
In general, two types of plastic deformation mode exist in high molecular weight glassy amorphous polymer blends: crazing
and shear banding.
The importance of this phenomenon lies in the fact that polymers are often used in crazing
From the amount of crazing
widening, the continuum stress acting in a direction normal to the craze-bulk interface can be deduced (4).
2), the craze fibrils bear the crazing
Company tests show the material is highly resistant to surface crazing
caused by food and beverage contact or extensive dishwashing, out-performing competitive resins such as polycarbonate, SAN and straight acrylic.
They concluded that crazing
is the dominant deformation mechanism for high impact polystyrene (HIPS) blends, regardless of the strain rate, and the difference in capability to initiate crazes is a dominant factor for the significantly different fracture energy of the two HIPS at the highest strain rate.
A review of the literature addressing crazing
in polymers indicates that a number of different models have been proposed to predict craze formation, growth, and subsequent separation in polymers.
The occurrence of crazing
in semicrystalline polymers, particularly in polyethylene, is well documented [1, 2].
There is also evidence of multiple crazing
in PE100 and BMPE, but there are fewer secondary crazes.
The residual mechanical properties of crazed polycarbonate were then correlated to the crazing
stress, relative craze density and strain rate.