Does the particle size of polycarbonate affect the quality of polycarbonate solid sheet?

The size of polycarbonate particles has an important influence on the melting process of polycarbonate solid sheet. The smaller the particles, the greater the ratio of its surface area to volume, and the higher the melting rate. Usually, polycarbonate particles should not be less than 30 meshes, but the size of polycarbonate should not be too small, because too fine particles are very easy to absorb moisture and agglomerate, and it is difficult to dry, which increases the difficulty of the process. Too fine materials will agglomerate when tumbling in the mold, resulting in uneven heating of the particles, and eventually forming uneven endurance board wall thickness or insufficiently melted plastic in the product.

Experiments show that the particle size of polycarbonate added to the rotational mold at one time should not be consistent or uniform. The powder particles of ordered size are in the heating mold. Due to the length and speed of the heat absorption and melting time of the coarse and fine powders, the molten plastic gradually accumulates and gradually forms. The fine powder mixed in the coarse particles has the effect of reducing friction on the movement of the coarse particles, which is conducive to the tumbling and flow of the material in the mold. At the same time, the presence of fine powder is also beneficial to the refinement of the surface of polycarbonate solid sheet products and reducing the cross-sectional porosity of products, thereby improving product quality.

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