Understanding of Oil Absorption of Aluminum Hydroxide Packing
Aluminum hydroxide filler is more and more widely used in additives, and its oil absorption has become an important technical index of additives. Let's take a look at it.
1. The particle shape and particle size distribution of aluminum hydroxide filler will have a great influence on the oil absorption. As an additive, under the premise of the same particle shape, the lower the oil absorption, the lower the viscosity during use.
2. At present, there is no unified measuring method for oil absorption in the domestic aluminum hydroxide filler industry. Foreign companies in the same industry use refined linseed oil or DOP (dioctyl phthalate) as measuring reagents. For example, the German company uses linseed oil, which is measured by the international standard ISO787/5.
3. Under the premise that the particle size distribution is basically the same, the particle shape is the main factor affecting the oil absorption.
Aluminum hydroxide through the measurement of temperature, stirring time, stirring method and a series of influencing factors were studied, the use of international refined linseed oil and foreign companies use DOP as a measurement reagent, the establishment of a detection method in line with international standards.
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