PolyStyrene(PS)

PolyStyrene(PS)

Polystyrene (PS)  is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene. Polystyrene can be solid or foamed. General-purpose polystyrene is clear, hard, and rather brittle. It is an inexpensive resin per unit weight. It is a rather poor barrier to oxygen and water vapor and has a relatively low melting point. Polystyrene can be naturally transparent but can be colored with colorants. 

Applications

Packaging, Sheet, Insulation, General Purpose, Foam, Electrical/Electronic Applications, Household Goods, Toys, Appliance Components, Containers, Medical Devices,

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Features

  • High Impact Resistance
  • Flame-Retardant
  • Food Contact Acceptable
  • Good Processability
  • High Heat Resistance
  • Expandable, High Flow, Fast Molding Cycle, Good Flow, High Gloss
  • Weather Resistance, Transparency

Advantages

  • Relatively inexpensive material
  • High flexural strength
  • Semi-crystalline nature
  • Low coefficient of friction
  • Moisture resistant
  • Good chemical resistance
  • Good fatigue resistance
  • High impact strength

Disadvantages

  • Poor resistance to UV, impact, and scratches
  • Embrittles below −20°C
  • Low upper service temperature, 90-120°C
  • Attacked by highly oxidizing acids, swells rapidly in chlorinated solvents and aromatics
  • Heat-aging stability is adversely affected by contact with metals
  • Post-molding dimensional changes due to crystallinity effects
  • Poor paint adhesion

HIPS

High Impact Polystyrene (HIPS) is a form of polystyrene (PS) that carries with it a higher impact strength. Homopolymer PS can often be brittle and can be made more impact resistant if combined with other materials. This form of PS typically is produced by adding around 5-10% rubber or butadiene copolymer. This increases the toughness and impact strength of the polymer and results in a very stiff product ideal for packaging applications.

Features

  • High Impact Resistance
  • High Gloss
  • Easy Flow
  • Food Contact Approved

Application

  • Electrical Parts
  • Air Conditioner
  • Office Automation
  • Computers
  • Toys
  • Sanitary Wares
  • Disposable Cup
  • Tray

Process

  • Extrusion
  • Injection Moulding
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GPPS

General-purpose Polystyrene, also known as GPPS is a substance prepared from styrene monomer polymer. It is a solid, transparent product and is manufactured by a suspension process. It is also known as crystal-clear polystyrene and is very different from high impact Polystyrene (HIPS). It has several useful properties like strength, weather resistance, etc. that makes it ideal for use in various industrial applications. GPPS flows freely and easily and can be molded with ease. These characteristics render GPPS products versatile and recyclable. It is also FDA compliant and resists X-Rays, Odor, and Taste.

Features

  • Brittle
  • Rigidity
  • Transparency
  • Low Shrinkage
  • Excellent X-ray ResistanceToys
  • Easy Process Ability

Application

  • Toys
  • Rigid Packaging
  • Refrigerator Trays and Boxes
  • Cosmetic packs and Office Supplies
  • Excellent X-ray ResistanceToys
  • Audio Cassette and CD Cases

Process

  • Extrusion
  • Injection Moulding

SAN

Styrene Acrylonitrile (SAN) – Styrene and acrylonitrile monomers can be copolymerized to form a random, amorphous copolymer that has improved weatherability, stress crack resistance, and barrier properties. The copolymer is called styrene acrylonitrile or SAN. The SAN copolymer generally contains 70 to 80% styrene and 20 to 30% acrylonitrile. This combination provides higher strength, rigidity, and chemical resistance than polystyrene, but it is not quite as clear as crystal polystyrene and its appearance tends to yellow more quickly.

Features

  • Chemical Resistant
  • High Clarity
  • High Flow
  • General Purpose
  • High Heat Resistance
  • Good Dimensional Stability
  • Food Contact Acceptable
  • Good Flow
  • High Strength
  • Copolymer

Uses

  • Electrical/Electronic Applications
  • Household Goods
  • Cosmetic Packaging
  • Appliances
  • Compounding
  • Automotive Applications
  • General Purpose
  • Stationary Supplies
  • Cups
  • Containers
  • Sanitary Ware

Process

  • Injection Moulding
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ABS

Acrylonitrile Butadiene Styrene (ABS) – This material is a terpolymer of acrylonitrile, butadiene and styrene. Usual compositions are about half styrene with the balance divided between butadiene and acrylonitrile. ABS is an ideal material wherever superlative surface quality, colorfastness and luster are required. ABS is a two phase polymer blend. The toughness of ABS is the result of sub microscopically fine polybutadiene rubber particles uniformly distributed in the SAN matrix. With considerable variation resulting in many different grades of acrylonitrile butadiene styrene offering a wide range of features and applications.

Features

  • High Impact Strength
  • High Heat and Chemical Resistance
  • High Stiffness
  • High Gloss
  • Weather Resistance
  • Flame Retardant
  • High Flow
  • General Purpose
  • Antistatic
  • Medium Impact Resistance

Application

  • Electrical Application - Microwave Parts
  • Electrical fans Electronic Applications
  • Automotive Parts - Interior & Exterior
  • Bicycle Parts
  • Household items
  • Kitchenware
  • Office Supplies
  • Writing Instrument - Pens
  • Toys
  • Appliance Components

Process

  • Extrusion
  • Injection Moulding