Determination method of oil absorption of aluminum hydroxide filler

Determination method of oil absorption of aluminum hydroxide filler

Almost manufacturers who need to use aluminum hydroxide are aware that the oil absorption value of aluminum hydroxide filler directly affects the application cost and processing performance. The oil absorption value of aluminum hydroxide is large, and the consumption of resin/silicone oil increases, which virtually increases the cost. As the oil absorption value increases, the viscosity of the resin/silicone oil increases immediately, which makes the molding process performance worse. Therefore, the result of the determination of the oil absorption value of the aluminum hydroxide filler is an important indicator. The oil absorption of aluminum hydroxide is measured by Doyo linseed oil, castor oil and DOP.

First, we need a beaker, a glass rod, reagents (such as linseed oil, castor oil, DOP), and the aluminum hydroxide filler to be measured, and then weigh a certain amount of aluminum hydroxide filler and place it in a dry beaker, and add the reagent with a burette. When the aluminum hydroxide filler is fully stirred with a glass rod to form a lump, if you continue to add reagents, the system will become thinner, and the amount of reagents used at this time is the oil absorption value of the pigment. Then calculate the oil absorption based on the amount of reagent added.