Foam recycling guidelines in our daily life that we should know

Polystyrene Styrofoam beads can be molded. For household appliances and other packaging or frozen food packaging foam; also a small number of instant noodles bowl which made of expandable polystyrene beads. These plastic products are bulky and have a lot of tuition and miscellaneous fees. China has been paid special attention to their recycling.
The main ways of Styrofoam recycling are: reduction after granulation, after crushing for a variety of filling materials, pyrolysis oil or recycled styrene and other.

(1) After volume reduction and granulation, polystyrene foam can be melt-extruded and granulated into recycled pellets, but therefore bulky and stool transportation, the volume reduction is usually required before recovery. Methods are mechanical, solvent and heating method.
(2) crushed used as a filler, polystyrene foam products can be used as a filler after Styrofoam densifier crushing, which made of various products.
Such as ① re-molded into foam products
② concrete composite board products
③ gypsum sandwich brick
④ as a bitumen enhancer
⑤ as a soil modifier
(3) pyrolysis oil recovery or recovery of styrene, waste polystyrene foam plastic oil cracking method is as follows
Waste polystyrene foam pretreatment heat treatment densification catalytic cracking distillation styrene.

(4) Others, waste polystyrene foam can be used to manufacture coatings and adhesives.
① paint, expandable polystyrene foam crushed by adding a suitable solvent can be made of paint, the process is as follows
Filler, colorant
PS, anti-CRP research overdose
Ethanol, dibutyl ester, ring should be mill filtered reactor mill filter
Oxygen resin, nitrile rubber kettle
② adhesives, esters and benzene mixed solvent, adding waste polystyrene foam, anti-precipitating agents, plasticizers, phenolic resins and other additives can be made for cement, steel, wood coatings.
Brominated brominated polystyrene flame retardants, the use of aluminum chloride as a catalyst, so that the waste polystyrene and electrophilic substitution of brominated brominated polystyrene, bromine content of up to 60% to 70 %. With antimony trioxide and use, there is a better flame retardant synergistic effect.

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