1. What is Density of Low-Density Polyethylene (LDPE)?

Definition: Density is the mass per unit volume of a material. For LDPE, it typically ranges between 910-925 kg/m³.

Purpose: Calculating density helps in material selection, quality control, and engineering applications involving LDPE.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \rho \) — Density (kg/m³)
• \( m \) — Mass (kg)
• \( V \) — Volume (m³)

Explanation: The mass of LDPE is divided by its volume to determine its density.

3. Importance of LDPE Density

Details: LDPE density affects its mechanical properties, processing characteristics, and suitability for different applications.

4. Using the Calculator

Tips: Enter the mass in kilograms and volume in cubic meters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical density range for LDPE?
A: LDPE typically has a density between 910-925 kg/m³ (0.910-0.925 g/cm³).

Q2: How does LDPE density compare to HDPE?
A: LDPE is less dense than HDPE (High-Density Polyethylene) which ranges from 940-970 kg/m³.

Q3: What affects LDPE density?
A: Density can vary with molecular weight, branching, crystallinity, and additives.

Q4: Why is density important for LDPE?
A: Density affects strength, stiffness, barrier properties, and processing characteristics.

Q5: How can I measure volume accurately?
A: For irregular shapes, use water displacement method. For regular shapes, use geometric formulas.