How strong is UHMW plastic?
Some of UHMW’s mechanical properties include: Tensile strength, yield: 18.9 – 5800 psi. Tensile strength, ultimate: 2030 – 102000 psi. Flexural strength at yield: 2000 – 5800 psi.
What is the tensile strength of UHMW?
Physical, mechanical, thermal, electrical, and optical properties of UHMW
UNITS | ||
---|---|---|
Tensile Strength | psi | 3,100 |
Flexural Modulus of Elasticity | psi | 110,000 |
Izod Impact (notched) | ft-lbs/in of notch | * |
Heat Deflection Temperature (66psi / 264psi) | °F | – |
How do you test plastic type?
One of the simplest ways to carry out a flame test is by cutting a sample from the plastic and igniting it in a fume cupboard. The colour of flame, scent and characteristics of burning can give an indication of the type of plastic: Polyethylene (PE) – Drips, smells like candlewax.
How can you tell the quality of plastic?
Methods to Verify Quality of Plastic Products
- Plastic Resin Variety. Assuring the quality of raw plastics and its integrity within a plastic product requires extensive evaluation and inspection methods.
- Raw Material Inspection.
- Ultrasonic Inspection.
- Radiographic Testing.
- Acoustic Inspection.
Is UHMW and HDPE the same?
UHMW and HDPE are made from ethylene monomers. They are both thermoplastic polymers. They both have an indistinguishable appearance. The main difference between UHMW and HDPE is that UHMW contains long polymer chains with a very high molecular weight, whereas HDPE has a high strength to density ratio.
What is the hardness of UHMW?
6.28e7 – 8.14e7
UHMW Polyethylene Material Properties
Property | Metric | units |
---|---|---|
Hardness (Vickers) | 6.28e7 – 8.14e7 | HV |
Impact Strength (notched) | 9.52e4 – 1.05e5 | ft.lbf/in^2 |
Fracture Toughness | 1.72e6 – 5.16e6 | ksi/in^0.5 |
Young’s Modulus | 8.94e8 – 9.63e8 | 10^6 psi |
How do you test the strength of plastic?
Test Procedure:
- Cut or injection mold your material into one of the five. “dumbbell” shapes.
- Load the specimen into tensile grips.
- Attach the extensometer to the sample.
- Begin the test by separating the tensile grips at a constant rate of speed.
- End the test after sample break (rupture)
How do you test the tensile strength of plastic at home?
Procedure
- Tie a short length of your test material in a secure knot around the hook of the spring scale.
- Secure the top of the spring scale to something steady, like a table or wall.
- Pull on the test material until it breaks.
- Record the force measured by the spring scale right before the test material breaks.
Is UHMW brittle?
Its melting point is around 130 to 136 °C (266 to 277 °F), and, according to DSM, it is not advisable to use UHMWPE fibres at temperatures exceeding 80 to 100 °C (176 to 212 °F) for long periods of time. It becomes brittle at temperatures below −150 °C (−240 °F).
What durometer is UHMW?
D2240 68
UHMW (Ultra High Molecular Weight Polyethylene)
Specification | Test | Value |
---|---|---|
Hardness, Durometer (Shore “D” scale) | D2240 | 68 |
Hardness, Rockwell (Scale as noted) | D785 | |
Izod Impact, Notched @ 73°F | D256 Type A | No Break |
Coefficient of Friction (Dry vs Steel) Static | PTM55007 | .15-.20 |
How do you test plastic properties of materials?
Peeling, puncture, and pressure tests also help determine the mechanical properties of a plastic material. Impact testing and hardness testing are also part of the process in determining how well a polymer can stand up to regular environments and abuse.