Low-Density Polyethylene (LDPE) Stress Relieved Sheet Description
Polyethylene or polythene is the most commonly produced plastic. It is a polymer, primarily used for packaging (plastic bags, plastic films, geomembranes, and containers including bottles, etc.). As of 2017, over 100 million tons of polyethylene resins are produced annually, accounting for 34% of the total plastics market.
PE is usually a mixture of similar polymers of ethylene, with various values of n. It can be low-density or high-density: low-density polyethylene is extruded using high pressure (1000–5000 atm) and high temperature (520 K), while high-density polyethylene is extruded using low pressure (6–7 atm) and low temperature (333–343 K). Polyethylene is usually thermoplastic, but it can be modified to become thermosetting instead, for example, in cross-linked polyethylene.
LDPE (low-density polyethylene) is a versatile, soft, flexible, lightweight plastic material that is easy to fabricate and form. LDPE is noted for its low temperature flexibility, toughness, and corrosion resistance. It is not suited for applications where stiffness, high-temperature resistance, and structural strength are required. LDPE also has good chemical and impact resistance.
Notable Attributes
Applications
Technical Specifications
| Property | Value |
|---|---|
| Density | 0.924 g/cm³ |
| Melt Index, Condition 190 °C / 2.16 kg | 1.3 g/10 min |
| Tensile Strength @ Yield | 2400 psi |
| Ultimate Elongation | 600% |
| Compressive Stress @Yield | 200 psi |
| Durometer Hardness | 55 Shore D |
| Flexural Modulus | 50,000 psi |
| Vicat Softening Temperature | 219 °F |
| Heat Deflection Temperature @66 psi | 124 °F |
| Brittleness Temperature | < -103 °F |
| Dielectric Strength | 500 V/mil |
| Dielectric Constant | 2.28 |
| Volume Resistivity | 6 X 1015 ohm-cm |
Safety Data Sheet (SDS)
For detailed safety information regarding LDPE, please refer to the Safety Data Sheet (SDS). This document provides comprehensive details on handling, storage, and emergency measures related to LDPE.
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