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Ordinary polystyrene is better known as cristal polystyrene or GPPS (General purpose polystyrene) It is a hard very transparant and britlle plastic. One of the best know uses is cd-box. To improve the toughness of this plastic rubber is added during the manufacture. This synthetic rubber (polybutadiene) is divided trough the polystyrene in the form of small droplets ,The size and the composition of the rubber droplets will determine final properties. A lot of applications will be made with mixtures of GPPS and HIPS (HIPS is high impact polystyrene). The stiffness of HIPS is a lot lower than the stiffness of GPPS, hence the mixtures. One well known application is yoghurt cups.

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Q: What are the differences between high impact polystyrene and ordinary polystyrene?
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What does HIPS stand for?

High impact polystyrene Home Information Packs (see related link below for more information)


What dose hips stand for?

high impact polystyrene


What is HIPS plastic?

HIPS High Impact Polystyrene is particularly suitable for thermoforming, it is a tough, rigid material and its high impact strength means it can be guillotined, punched, routered or sawn without difficulty.


Why is polystyrene brittle?

Unfilled polystyrene is also known as crystal polystyrene (PS) or general purpose polystyrene (GPPS). However, since crystal polystyrene is brittle, other polymers are added to polystyrene to improve its strength, and copolymers are formed as a result. One such copolymer is high impact polystyrene (HIPS), which is produced by adding polybutadiene rubber to polystyrene during the polymerization process. HIPS is tougher and has a greater impact strength than unfilled polystyrene. There are different types of polystyrene. Extruded polystyrene (XPS) is one form of the polymer that has high tensile strength, with good elasticity. It is commonly known as Styrofoam™. The other common form of polystyrene is expanded polystyrene (EPS). Both EPS and XPS are made from similar materials but there are difference between the two. XPS has a higher density as compared to EPS, due to the absence of air passages between its cells. The higher density makes XPS more rigid and strong. Also, XPS is waterproof and is an effective thermal insulator. Read more in the related link.


What kind of plastic is the television made of?

It depends on what kind of TV you have (LCD plasma old new). television housing can be made from polystyrene like POLYSTYRENE IMPACT 6540.


What is the density of hips?

High-Impact Polystyrene, HIPS´ve a density = 1,06 gr/cc


What are the differences between Heritage Assessment and Heritage Impact Assessment?

i don't think i know yet.


Is high impact polystyrene a thermoplastic or a thermosetting plastic?

It is a thermoplastic! :)


Is HIPS plastic thermosetting?

No, high Impact Polystyrene (HIPS) is a thermoplastic. It melts when heated.


What is HIPS used for?

i recently found this out and hips stands for high impact polystyrene but iam not actually sure what its used for


Does polystyrene exhibit yielding?

No, pure Polystyrene (PS) is quite brittle; hence, General Purpose Polystyrene (GPPS) does not yield. It breaks right after passing over its limit. However, the weakness of polystyrene, which is brittleness, is overcome when it is made into High Impact Polystyrene (HIPS). Having a higher breaking strain after polymerization, it is able to yield before breaking. Thus, from this tensile testing experiment, GPPS does not have yield strength, while HIPS has yield strength of 26.175N/mm2.


Why is High impact polystyrene used for DVD cases?

because it can protect the DVD cos it is hard and brittle. Hope this helps