Water vapor transmission rate (WVTR) is the measure of how much water vapor passes through a material over a given time, used to evaluate moisture […]

Weatherability refers to a material’s ability to resist damage or degradation when exposed to outdoor conditions like sunlight, moisture, and temperature changes.

Yellowness Index (YI) measures the degree of yellow discoloration in a material, often caused by UV exposure or aging, indicating changes in optical clarity over […]

Yield point elongation is the strain at which a polymer transitions from elastic to plastic deformation, marking the start of permanent shape change.

Young’s modulus measures a material’s stiffness, representing the relationship between stress and strain in a material when subjected to elastic deformation.