Plastic Properties of Low Density Polyethylene (LDPE)
The first of the polyolefins, Low Density Polyethylene (LDPE) was originally prepared some fifty years ago by the high pressure polymerization of ethylene. Its comparatively low density arises from the presence of a small amount of branching in the chain (on about 2% of the carbon atoms). This gives a more open structure. Low Density Polyethylene (LDPE) is a most useful and widely used plastic especially in dispensing bottles or wash bottles.
It is translucent to opaque, robust enough to be virtually unbreakable and at the same time quite flexible. Chemically LDPE is unreactive at room temperature although it is slowly attacked by strong oxidizing agents and some solvents will cause softening or swelling. It may be used at temperatures up to 95° Celsius for short periods and at 80° Celsius continuously. LDPE is ideally suited for a wide range of molded laboratory apparatus including wash bottles, pipette washing equipment, general purpose tubing, bags and small tanks.
Dynalab Corp's plastic fabrication shop fabricates many catalog and custom LDPE products. If you can't find the product you require on our website please e-mail for a custom quote.
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LDPE Resistance:
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LDPE Quick Facts:
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Excellent resistance (no attack) to dilute and concentrated Acids, Alcohols, Bases and Esters
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• Max Temp: 176°F 80°C
• Min Temp: -58°F -50°C
• Autoclavable: No
• Melting Point: 248°F 120°C
• Tensile Strength: 1,700 psi
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• Hardness: SD55
• UV Resistance: Poor
• Translucent
• Excellent flexibility
• Specific Gravity: 0.92 |
Good resistance (minor attack) to Aldehydes, Ketones and Vegetable Oils
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Limited resistance (moderate attack and suitable for short term use only) to Aliphatic and Aromatic Hydrocarbons, Mineral Oils and Oxidizing Agents
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Poor resistance (not recommended for use with) Halogenated Hydrocarbons
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| LDPE Fabrication: |
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Additional Information:
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• Weldable and machinable
• Good for parts that require flexibility
• Trays & containers
• Food storage and laboratory
• Corrosion resistant work surfaces
• Very soft and pliable
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• Chemical Properties A-F
• Chemical Properties G-Z
• Physical Properties
• Use and Care of Plastics
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