The amount of sheen in polyurethane is controlled by the manufacturer by adding ____ to the mixture.
A) silica
B) linseed oil
C) tung oil
D) ambering

Question

Quizplus · Accepted Answer

Silica is added to polyurethane mixtures by manufacturers to control the amount of sheen. This is because silica acts as a flattening agent that scatters light, thereby reducing the glossiness of the finish.

The Amount of Sheen in Polyurethane Is Controlled by the Manufacturer