| Low Density Polyethylene |
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Information AboutLow Density Polyethylene |
| CATEGORIES ABOUT LOW DENSITY POLYETHYLENE | |
| polyolefins | |
| plastics | |
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It is defined by a density range of 0.910 - 0.940 g/cc. It is unreactive at Room Temperature s, except by strong oxidizing agents, and some Solvent s cause its Swelling . It can withstand temperatures of 80 °C continuously and 95 °C for a short time. It is translucent or opaque, quite flexible, and tough to the degree of being almost unbreakable. It is widely used for manufacturing various containers, dispensing bottles, wash bottles, tubing, and various Molded laboratory equipment. Its most common use is in Plastic Bag s. LDPE has more Branching (on about 2% of the carbon atoms) than HDPE , so its Intermolecular Force s ( Instantaneous-dipole Induced-dipole Attraction ) are weaker, its Tensile Strength is lower, its Ductility is higher, and as its molecules are less tightly packed and less crystalline because of the side branches, its Density is lower. It is manufactured by Free Radical Polymerization . MATERIAL PROPERTIES LDPE material properties Maximum Temperature: 176° F 80° C Minimum Temperature: -58° F -50° C Autoclavable: No Melting Point: 248° F 120° C Tensile Strength: 1700 Psi Hardness: SD 55 UV Resistance: Poor Translucent Excellent flexibility Specific Gravity : 0.92 LDPE fabrication Weldable and machinable Good for parts that require flexibility Trays & containers Food storage and laboratory Corrosion resistant work surfaces Very soft and pliable LDPE resistance Excellent resistance (no attack) to dilute and concentrated Acid s, Alcohol s, Bases and Ester s. Good resistance (minor attack) to Aldehyde s, Ketone s and Vegetable Oil s. Limited resistance (moderate attack suitable for short term use only) to Aliphatic and Aromatic Hydrocarbons , Mineral Oil s and Oxidizing Agent s. Poor resistance and not recommended for use with Halogenated Hydrocarbons . {Link without Title} SEE ALSO |
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