EPS plastic is a expandable polystyrene, commonly known as polystyrene and styrenic copolymer. It is a mixture of a resin and a physical foaming agent and other additives. The most common expandable polystyrene is contained as a hair Transparent PS pellets of pentane for foaming agents. The main uses of EPS are disposable beverage cups, seismic packaging and insulation materials.
EPS plastic characteristics:
1, light weight. Part of the EPS packaging product is replaced by gas, containing 3 to 6 million independent closed bubbles per cubic centimeter of volume. Therefore, it is several times to several tens of times larger than plastic.
2, has the ability to absorb impact load. When the EPS packaging product is subjected to impact load, the gas in the foam passes through the stagnation and compression, so that the external energy is consumed, dissipated, and the bubble gradually terminates the impact load with a small negative acceleration. Therefore, it has a good shockproof effect.
3, good thermal insulation performance. Thermal conductivity is the weighted average of pure EPS thermal conductivity (108cal / m.h. ° C) and air thermal conductivity (about 90cal / m.h. °C).
4, sound insulation performance is good. EPS products sound insulation mainly through two ways, one is to absorb sound energy, reduce reflection and transmission; the second is to eliminate resonance, reduce noise.
5, anti-aging, corrosion performance. In addition to long-term exposure to high-energy radiation, the product has no obvious aging phenomenon. Can withstand many chemicals, such as dilute acid, dilute alkali, methanol, lime, asphalt and so on.
6, anti-static performance. Because EPS products have low conductivity, it is easy to generate self-charge phenomenon in the friction, will not affect the general user products. For high-precision electronic products, especially large-scale integrated block structure of modern appliances Components, anti-static EPS products should be used.