HIPS and GPPS are slightly different. Polystyrene is one of the most widely used thermoplastic materials worldwide. Polystyrene is used in different industries. The use of HIPS and GPPS in the manufacture of plastics is slightly different. General Purpose (GPPS) polystyrene is transparent and durable and is used to make transparent containers.

High Impact Polystyrene (HIPS) is more durable than GPPS and is used to make durable and translucent plastics. In this PETROPROVIDERS article, join us to introduce you to the differences and similarities between HIPS and GPPS.

Full introduction of these two grades of polystyrene

Polystyrenes are made of styrene monomer. In general, styrene monomer is derived from oil and gas and is easily prepared for the production of polystyrene. Polystyrene is composed of styrene monomers that have a long hydrocarbon chain. These chains have carbon and hydrogen atoms that are tightly bonded together.

More precisely, the chemical structure of polystyrenes is the same as the structure of polystyrenes; That is, (C8H8)n. This compound contains 8 carbon atoms and 8 hydrogen atoms. So if our polystyrene has 200 styrene monomers, there are 1600 carbon atoms and 1600 hydrogen atoms in the structure.

Polystyrenes have special properties. These materials are composed of styrene monomers and are produced in different grades. In addition to General Purpose Polystyrene (GPPS) and High Impact Polystyrene (HIPS), there are two grades of Expanded Polystyrene (EPS) and Extruded Polystyrene (XPS) in the market.

In general, polystyrene production methods are different. To produce GPPS polystyrene, simple molds are used so that the material can be converted into various shapes. This polystyrene is transparent and has little resistance. It is cheaper than HIPS and is used to produce food packaging.

The production method of High Impact Polystyrene (HIPS) is slightly different. This substance is molded and butadiene is added to it. Butadiene makes up about 5 to 10 percent of the HIPS compound. This material increases the HIPS resistance to various shocks. HIPS is translucent due to butadiene but is much more resistant than GPPS. This material is used to produce durable and durable plastic devices.

It is interesting to know that using GPPS in different industries is very cost effective. GPPS is used to produce plastic glass and clear plastic containers. This material is very flexible but breaks with high pressure.

HIPS is used to produce building insulation, auto parts and plastic parts for electronics. This material is more expensive than GPPS and has much more resistance.

Similarities of HIPS and GPPS

HIPS uses

HIPS uses

These two chemicals have many similarities. For example, HIPS and GPPS are polystyrene and are composed of styrene monomers. In addition, other similarities between these two grades of polystyrene are:

  • Production and recycling of these polystyrenes is simple and inexpensive.
  • These polystyrene grades are produced as hard and cheap resins.
  • HIPS and GPPS are FDA compliant; This means that these two polystyrenes can be used for food packaging.
  • These polystyrenes are easily recycled and used in the production of health products.
  • To produce these polystyrene grades, thermoforming, extrusion, injection and pneumatic methods are used.

Interesting properties of High Impact polystyrene (HIPS)

This polystyrene is one of the cheapest polystyrene. It heats up easily and turns into different shapes. As mentioned, HIPS polystyrene is made from a combination of butadiene and polystyrene. HIPS polystyrene can be produced using extrusion molding method.

This grade of polystyrene has very good flexibility; It is insulated against impact, sound and water and HIPS can be used to produce various plastics.

It is resistant to high pressures; But if the pressure is too high, it can cause HIPS fractures. This is one of the oldest polystyrenes that has special structural properties.

Interesting properties of General Purpose (GPPS) polystyrene

gpps uses

gpps uses

This polystyrene is a kind of transparent grade. In various industries, GPPS is used to produce flexible devices. This material is used to produce car plastics and has good stability in different temperature conditions. In addition, it has dielectric properties. Other features of GPPS include:

  • This polystyrene is non-toxic.
  • This polystyrene has a good smell.
  • GPPS has good water resistance.
  • This grade of polystyrene has good strength; But if more pressure is applied to it, it loses its stability and breaks.
  • It is resistant to temperature changes.
  • GPPS is easily recycled.
  • This grade of polystyrene is cheap.

Summary of comparison of HIPS and GPPS features

In this article, we look at the structural and functional features of HIPS and GPPS. These materials are artificially made in the laboratory and can be easily produced. In addition, GPPS and HIPS polystyrenes can be used to make a variety of industrial plastics.

Polystyrenes are made of styrene monomer. In general, styrene monomer is derived from oil and gas and is easily prepared for the production of polystyrene. Polystyrene is composed of styrene monomers that have a long hydrocarbon chain.

HIPS polystyrene is made from a combination of butadiene and polystyrene. HIPS polystyrene can be produced using extrusion molding method. GPPS has good water resistance. This grade of polystyrene has good strength; But if more pressure is applied to it, it loses its stability and breaks.

What do you think about HIPS and GPPS? In the comments, you can tell us your opinion about the types of polystyrenes and their applications. To buy the best polystyrene, you can contact our experts.