What are the properties of polyethylene?

What are the properties of polyethylene?

Polyethylene Thermoplastic Characteristics

  • Economical.
  • Low co-efficient of friction.
  • Excellent chemical resistance.
  • Stable in cryogenic environments.
  • Good impact resistance.
  • FDA/USDA approved (HDPE)
  • Resistant to many solvents (HDPE)
  • Good fatigue and wear resistance (HDPE)

What are the mechanical properties of HDPE?

HDPE Properties and Material Options

UNITS HDPE
Tensile strength psi 4,000
Flexural modulus psi 200,000
Izod impact (notched) ft-lbs/in of notch 1.3
Heat deflection temperature @ 264 psi °F 172

What is the modulus of elasticity for HDPE?

0.565 – 1.50 GPa

Physical Properties Metric English
Modulus of Elasticity 0.565 – 1.50 GPa 81.9 – 218 ksi
Flexural Yield Strength 13.8 – 75.8 MPa 2000 – 11000 psi
Flexural Modulus 0.280 – 1.86 GPa 40.6 – 270 ksi
Compressive Yield Strength 4.00 – 23.0 MPa 580 – 3340 psi

What is polyethylene mostly used for?

Polyethylene is a member of the important family of polyolefin resins. It is the most widely used plastic in the world, being made into products ranging from clear food wrap and shopping bags to detergent bottles and automobile fuel tanks.

How is polyethylene used in engineering?

Polyethylene is one of the most commonly used engineering plastics. Its chemical resistance properties and ease of fabrication make it popular in the chemical industries. Its molecular structure provides the key to its versatility. Keywords: HDPE, long chain macromolecule, thermoplastic, plastic welding.

What are the characteristics of polypropylene?

The properties of Polypropylene include…

  • Semi-rigid.
  • Translucent.
  • Good chemical resistance.
  • Tough.
  • Good fatigue resistance.
  • Integral hinge property.
  • Good heat resistance.

Is HDPE thermosetting or thermoplastic?

High-density polyethylene (HDPE) or polyethylene high-density (PEHD) is a thermoplastic polymer produced from the monomer ethylene.

What is the yield strength of HDPE?

Mechanical Properties at 23 °C

PROPERTY UNIT VALUE / RANGE
Tensile Strength, Yield at 23 C MPa 23.0 – 29.5
Tensile Strength, Break at 23 C MPa 30.5 – 33
Elongation, Yield % 9 – 18
Elongation, Break % 600 – 1350

What is HDPE plastic made of?

High Density Poly Ethylene (HDPE) is a thermoplastic polymer made from petroleum. As one of the most versatile plastic materials around, HDPE plastic is used in a wide variety of applications, including plastic bottles, milk jugs, shampoo bottles, bleach bottles, cutting boards, and piping.

How is polypropylene used?

Polypropylene (PP) is a thermoplastic “addition polymer” made from the combination of propylene monomers. It is used in a variety of applications to include packaging for consumer products, plastic parts for various industries including the automotive industry, special devices like living hinges, and textiles.

What is polystyrene used for?

polystyrene, a hard, stiff, brilliantly transparent synthetic resin produced by the polymerization of styrene. It is widely employed in the food-service industry as rigid trays and containers, disposable eating utensils, and foamed cups, plates, and bowls.

How is the polythene manufactured give their properties and uses?

i. LDP is prepared by polymerization of ethylene under high pressure (1000 – 2000 atm) and temperature (350 – 570 K) in presence of traces of O2 or peroxide as initiator. ii. The mechanism of this reaction involves free radical addition and H-atom abstraction.