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← ScienceWhich behavior occurs when injection molded parts experience shear thinning?
A)Decreased viscosity eases cavity fill✓
B)Increased surface tension causes weldlines
C)Material solidifies at high temperature
D)Voids form due to thermal expansion
💡 Explanation
Decreased viscosity occurs because shear thinning is non-Newtonian behavior where viscous resistance reduces under shear stress during injection; therefore, the molten plastic flows easily to fill the mold because viscosity declines, rather than causing solidification or voids under different conditions.
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