Polystyrene (PS) plastic is a naturally transparent thermoplastic that is available as both | |
a typical solid plastic as well in the form of a rigid foam material. PS plastic is commonly used in a variety | |
of consumer product applications and is also particularly useful for commercial packaging. Dow… Now | |
that we know what it is used for, let’s examine some of the key properties of Polystyrene. Polystyrene is | |
typically (but not always) a homopolymer meaning that it is composed only of the monomer styrene in | |
combination with itself. Depending on the type of PS it could be classified… |
Styrofoam products are made out of PS plastic, so it’s commonly used to make disposablecoffee cups, packing peanuts, coolers and to-go food containers. PS products CANSOMETIMES be recycled.
The Eleven Most Important Types of Plastic
Polystyrene (PS):… Plastics are one of the most versatile and widely used materials in the worldHere are the top-eleven most relevant types from water bottles to artificial hips.
What are the Characteristics of Polystyrene?
Now that we know what it is used for, let’s examine some of the key properties of Polystyrene. Polystyrene | |
Is typically (but not always) a homopolymer meaning that it is composed only of the monomer styrene in | |
combination with itself. Depending on the type of PS it could be classified as a “thermoplastic” or a | |
“thermoset” material. The name has to do with the way the plastic responds to heat. Thermoplastic | |
materials become fully liquid at their melting point (210-249 degrees Celsius in the case of Polystyrene), | |
Polystyrene is most uniquely useful for its application as a foamIt is the runaway leader in the packaging industry but it also has a wide range of uses asa traditional plastic. At Creative Mechanisms, we have used Polystyrene ina number of applications across a range of industries. For many yearsPolystyrene, or as it is often referred to as just Styrene, was used as the go-to prototyping material basically for the same reasons we now use ABS. It’s inexpensive, readily availablewhite in color, and it glues, sands, cuts, and paints well. The “S” in ABS is Styrene.A lot of older engineers and designers who have been in the industryfor a while will ask for a Styrene model when they’re looking for a quick-down-and-dirty prototypeWe still have a lot of sheets of Styrene in the shop at Creative Mechanisms. We will use them to make quick test models, paint samples,vacuum formed or thermoformed prototypes,
Polystyrene is most uniquely useful for its application as a foamIt is the runaway leader in the packaging industry but it also has a wide range of uses asa traditional plastic. At Creative Mechanisms, we have used Polystyrene ina number of applications across a range of industries. For many yearsPolystyrene, or as it is often referred to as just Styrene, was used as the go-to prototyping material basically for the same reasons we now use ABS. It’s inexpensive, readily availablewhite in color, and it glues, sands, cuts, and paints well. The “S” in ABS is Styrene.A lot of older engineers and designers who have been in the industryfor a while will ask for a Styrene model when they’re looking for a quick-down-and-dirty prototypeWe still have a lot of sheets of Styrene in the shop at Creative Mechanisms. We will use them to make quick test models, paint samples,vacuum formed or thermoformed prototypes, or large models that can be created with flat sheets.We have also seen PS used as a sort-of living hinge material (typically polypropylene fits best into living hinge applications). There are clear disposablePS containers (e.g. a hot dog container from WaWa or your neighborhood convenience store for those living outside the Northeast) that function like aclamshell with a hinge in the middle. The hinge in this case is a little different than your traditional PP living hinge. Typically the PS hinge is more of aseries of bends that allow the clamshell to flex and open up. Whether it is technically a living hinge or not, it still works very well and can be easilythermoformed
FDA for decades has determined that polystyrene is safefor use in contact with food. In addition, FDA has approved styrene as a food additive – it can be added in small amounts to baked goods, frozen dairy products, candy, gelatins,puddings and other food.
products color
· Black |
· white |
· grey |
We produce more than 100000 tons per year
What are the properties of PS?
Property | Value | |||
Technical Name | Polystyrene (PS) | |||
Chemical Formula | (C8H8)N | |||
Melt Temperature | 210-249 °C (410-480 °F) | |||
Typical Injection Molding Temperature | 38 – 66 °C (100 – 150 °F) | |||
Heat Deflection Temperature (HDT) | 95 °C (284 °F) at 0.46 MPa (66 PSI) | |||
Tensile Strength | 53 MPa (7700 PSI) | |||
Flexural Strength | 83 MPa (12000 PSI) | |||
Specific Gravity | 1.04 | |||
Shrink Rate | 0.3 – 0.7 % (.003 – .007 in/in) |