Calcium carbonate masterbatch granulator

Calcium carbonate masterbatch granulator
, talcum powder and calcium carbonate are both used for filling. The main purposes are
, to increase dimensional stability (that is, to reduce shrinkage),
, , Increase the stiffness of the material,
, , Increase the heat resistance of the material,
, , Reduce the material cost and other aspects, but it also has its shortcomings
, , Increase the density,
, If used poorly, the impact toughness decreases, and the material gloss decreases.
, Talcum powder and calcium carbonate have the same particle size distinction, generally
, mesh,
, mesh,
, mesh,
, mesh and
, mesh, of course, there are finer ones, and generally used in plastics, you can choose
, mesh and
, mesh, which can achieve the highest performance
and price ratio.
, the price of talcum powder fluctuates. Generally speaking, it is not a big problem to set the price according to the mesh number. For example,
, the general price of mesh is between
, to
, between elements,
, is also between
, and
, elements. It is abnormal for the price to be too high or too low.
, About the difference between talc powder and calcium carbonate
, Talc powder is in the shape of flakes, so it has higher stiffness, dimensional stability and heat resistance, and has good reinforcing effect.
, Calcium carbonate is generally granular, so its stiffness and other aspects are not as good as talc powder, but it is cheaper, has high whiteness, and has little impact on the impact toughness of plastics.
, talc has a nucleating effect on polypropylene, while calcium carbonate has no obvious effect in this regard.
, , Calcium carbonate can generally be divided into light calcium carbonate and heavy calcium carbonate, while talc powder does not have this distinction. Talc powder is ground from natural minerals
, talc powder surface It has hydrophilic groups, while most plastics are hydrophobic,
, and very fine talc powder is easy to agglomerate during processing, affecting the performance of filled plastics.
, Therefore, the talc powder must be surface modified. Plastic talc powder undergoes surface modification treatment,
, which is very important to improve the performance of filled plastics.
, calcium carbonate
()
, filler advantages
, is one of the lowest priced fillers
, non-toxic, non-irritating, odorless

White, low refractive index, easy to color, any desired color can be obtained

. , soft
(
The standard material is Mohs hardness tester Mohs acidity
)


Dry, no crystal water

Sufficient supply of raw materials