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Bulk density, also known as apparent density or packing density, refers to the mass per unit volume of a powder in its naturally accumulated state, without external pressure.

Simply put, modification is the process of purposefully adjusting the surface or internal properties of a material through physical, chemical, or mechanical means to obtain properties that it previously lacked or possessed insufficiently, in order to adapt it to specific applications.

Simply put, modification is the process of purposefully adjusting the surface or internal properties of a material through physical, chemical, or mechanical means to obtain properties that it previously lacked or possessed insufficiently, in order to adapt it to specific applications.

Oil absorption value refers to the volume (in milliliters) of liquid required per 100 grams of powder material to absorb a specific liquid (commonly linseed oil or castor oil) to achieve a specific viscosity (such as forming a uniform agglomerate or paste). The unit is usually mL/100g.

In industrial production and materials science, moisture generally refers to the total amount of water contained within a substance. However, based on its form and state, water can be further subdivided into the following levels: