What is the density of foam plastics and what are the ingredients and uses of foams?
Density of foamed plasticsLinear low density polyethylene (general) density: 0.91 - 0.940G/CM3 (g / cm3); low density polyethylene density: 0.910 - 0.9408G/CM3 (g / cm3); high density polyethylene density: 0.941 - 0.9708G/CM3 (g / cm3).
Calcium stearate: saturated fatty acid salts, the amount of about 1%, functions as a lubricant, medical grade.Butane: saturated hydrocarbon, foaming agent. There have been some production lines using freon as foaming agent, in order to protect the ozone layer, the United Nations "Multilateral Fund" aid has all use butane foaming agent.
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.
