The selection of the pulverizing equipment mainly depends on the type and shape of the pulverized material and the degree of pulverization required. Different pulverizing equipment should be used for the waste plastics of different materials. Rigid polyvinyl chloride, polystyrene, plexiglass, phenolic resin, urea-formaldehyde resin, polyester resin, etc. are a kind of brittle plastic, which is brittle and brittle. Once subjected to compression and impact, it is easily brittle and broken. In small pieces, it is suitable for such plastics to be crushed by compression or impact pulverizing equipment; and for tough plastics having high ductility at normal temperature, such as polyethylene, polypropylene, polyamine, aBS plastic, etc. It is only suitable to use shearing pulverizing equipment, because they are subjected to external compression, bending, impact and other forces, generally do not crack, difficult to break, it is not suitable to use the pulverizing equipment used for brittle plastic; in addition, for elastic materials, soft For materials, it is best to use low temperature pulverization.

In addition, the pulverizing equipment should be determined according to the degree of pulverization of the waste. If the large piece is broken into small pieces, compression, impact or shear pulverizing equipment should be used; if the small pieces are pulverized into fine powder or fine granules, then Mainly using grinding pulverizing equipment.

Waste materials have been affected by external conditions and light and heat, and there have been different degrees of aging. Obviously, various additives have different degrees of loss. In order to maximize the quality of the recycled product, a certain amount of auxiliary agent needs to be added in the remanufacturing process, thereby improving the multi-faceted performance of the rework forming process and the product.

Based on consideration of some of the above factors, the following points should be considered when determining the rework formulation:

1. Selection of additive types;

2. Determination of the amount of additive added;

3. Adjustment of the formula.

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