What are the mechanical properties of polyethylene?

What are the mechanical properties of polyethylene?

Polyethylene Material Properties

Property Metric English
Density 952 – 965 00.344 – 0.0349
Yield Strength 2.62e7 – 3.1e7 3.8 – 4.5
Tensile Strength 2.21e7 – 3.1e7 3.21 – 4.5

What is medium density polyethylene used for?

MDPE plastic pipes are used for gas pipes, water and waste water plumbing designs, sewage, and drainage, steel pipe coating, wiring and cables, shrink films, and lots more.

What are the advantages of using transparent medium density polyethylene?

8 Super Advantages of Using Polyethylene Packaging

  • 1) Enhanced Protection. Polyethylene is leakage proof which means it does not allow water vapor to pass through it.
  • 2) Highly Adaptable.
  • 3) Extremely Lightweight.
  • 4) Economical.
  • 5) Durable.
  • 6) Excellent Rigidity.
  • 7) Superior Flexibility.
  • 8) Easily Recyclable.

What are the physical properties of HDPE?

PROPERTIES. Flexible, translucent/waxy, weatherproof, good low temperature toughness (to -60’C), easy to process by most methods, low cost, good chemical resistance.

What is the difference between high density polyethylene and low density polyethylene?

As its name suggests, low-density polyethylene (LDPE) has a lower density, strength, and temperature resistance. Meanwhile, high-density polyethylene (HDPE) is characterized by higher specific strength and heat resistance.

How is medium-density polyethylene made?

MDPE can be produced by chromium/silica catalysts, Ziegler-Natta catalysts or metallocene catalysts. MDPE has good shock and drop resistance properties. It also is less notch sensitive than HDPE. Stress cracking resistance is better than that of HDPE.

What is the tensile strength of HDPE?

HDPE (High Density Polyethylene) Typical Properties

Physical Properties English
Hardness, Shore D 58 – 65 62
Tensile Strength, Ultimate 3480 – 6530 psi 30 MPa
Tensile Strength, Yield 2180 – 4350 psi 21.9 MPa
Elongation at Break 500 – 1000 % 840%

What is HDP how is it prepared give its properties and uses?

HDP means high density polyethylene. It is a linear polymer with high density due to close packing. HDP is obtained by polymerization of ethene in presence of Zieglar-Natta catalyst which is a combination of triethyl aluminium with titanium tetrachloride at a temperature of 333K to 343K and a pressure of 6-7 atm.

What is HDP give its properties and uses?

What are the advantages of HDPE?

The Advantages of HDPE Include

  • Affordable.
  • High-Quality.
  • Operate and Harsh Temperatures.
  • Non-Leaching.
  • UV Resistant.
  • Resistant to most Chemicals.
  • Stiff Material.
  • Amazing Durability.

Which form of PE is mechanically more flexible explain?

LDPE Sheet for O&P– Low Density Polyethylene is more flexible than HDPE, polypro, or copoly PP, making it an excellent choice for pediatric AFOs, some splints, and flexible socket interfaces.

What is the difference between high and low density polyethylene?

What is difference between HDPE and MDPE?

“HDPE” stands for “High-Density Polyethylene”; “MDPE” stands for Medium-Density Polyethylene. 2. HDPE has the density 0.941g/cm3 or greater; MDPE has the density in the range of 0.926-0.940g/cm3. 3.

What is the difference between LDP and HDP?

HDP stands for high-density polymer with a linear structure, whereas LDP stands for low-density polymer with a branching structure. HDP has a greater melting point and is chemically inert, whereas LDP has a lower melting point and is more flexible.

Is high density polyethylene harmful?

With all the advantages high-density polyethylene pipes offer, it’s hard to believe that there would be any negatives. However, there are a few. The primary disadvantage is stress cracking.

Which is better- polypropylene or polyethylene?

Polyethylene (PE) and Polypropylene (PP) are used in much more than just poly bags. From stretch film to tape, plastic sheeting to strapping, plastic is everywhere. Better yet, both materials are recyclable, which makes them a great choice for those with sustainability in mind.

How is low density polyethylene used?

Low-density polyethylene has high clarity, is chemically inert, and has good impact strength and excellent tear and stress crack resistance. Low-density polyethylene (LDPE) has applications in sterile blister packs for drug packaging. Linear low-density polyethylene (LLDPE) is used in films and packaging due to its flexibility and toughness.

Is polyethylene the same a polystyrene?

From Google search: As nouns, the difference between polyethylene and polystyrene is that polyethylene is (organic compound) a polymer consisting of many ethylene monomers bonded together; used for kitchenware, containers etc while polystyrene is (organic chemistry) a vinylic polymer of styrene, ch2chphenyl.

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