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Question:

Why are the plastic foams one grain each? How was it made?

Why are the plastic foams one grain each? How was it made?

Answer:

The main raw material of polystyrene foam tableware with polystyrene, talcum powder, calcium stearate, butane etc..PS: its process is monomer styrene under high temperature, high pressure and catalyst action, in the sealed reactor polymerization. Although styrene is an aromatic compound, its reaction is carried out under sealed anaerobic conditions without producing dioxin conditions and is in line with food hygiene and requirements.Talc: it is an inorganic mineral (containing magnesium silicate hydrate), dosage of about 1%, played a nucleating role, medical grade.Calcium stearate: saturated fatty acid salts, the amount of about 1%, functions as a lubricant, medical grade.
The production of plastic foam product of beads pre foaming and curing prefoamed beads into the mold, then the sealing bead heating, heating and softening expansion, thus forming a specified shape. That is, the particles of a nearly circular (irregular polyhedron) are seen.
This is mainly determined by the manufacturing process. It is a mixture of resins and physical foaming agents and other additives that produce small beads of resin beads by suspension polymerization (so they are generally round).

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