Wie heeft piepschuim bedacht?
1949. In 1949 is piepschuim uitgevonden, dat eigenlijk geëxpandeerd polystyreen heet. De uitvinder experimenteerde destijds met een mengsel van polystyreen en petroleumether in een schoenpoetsblikje van Erdal. Hij had het blikje een weekend in de droogkast laten staan en er niet meer aan gedacht.
Waar is piepschuim van gemaakt?
EPS staat voor Expanded Polystyrene of Geëxpandeerd Polystyreen en is een licht en vrijwel altijd wit materiaal. EPS wordt gemaakt van polystyreen en is daarom een kunststof. In de volksmond wordt EPS ook wel piepschuim, tempex of PS-hardschuim genoemd.
Is polystyrene biodegradable?
Waste polystyrene takes hundreds of years to biodegrade and is resistant to photo-oxidation. Animals do not recognize polystyrene foam as an artificial material and may even mistake it for food. Polystyrene foam blows in the wind and floats on water, due to its low specific gravity.
What are the characteristics of polystyrene?
Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and brittle. It is an inexpensive resin per unit weight. It is a poor barrier to oxygen and water vapour and has a relatively low melting point. Polystyrene is one of the most widely used plastics, the scale of its production being several million tonnes per year.
Where is polystyrene used in everyday life?
Polystyrene is everywhere. In its expanded foam state, polystyrene can be found in coolers, materials used in road construction, and to package everything from computers to food. The most common and recognizable form of polystyrene is called Styrofoam.
What household items are made of polystyrene?
Refrigerators, air conditioners, ovens, microwaves, vacuum cleaners, blenders – these and other appliances often are made with polystyrene (solid and foam) because it is inert (doesn’t react with other materials), cost-effective and long-lasting.