1. What is HDPE Density Calculator?

Definition: This calculator computes the density of High-Density Polyethylene (HDPE) using mass and volume measurements.

Purpose: It helps material scientists, engineers, and manufacturers determine the density of HDPE materials for quality control and material specification.

2. How Does the Calculator Work?

The calculator uses the density formula:

Where:

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

Explanation: The mass of the HDPE sample is divided by its volume to calculate its density.

3. Importance of HDPE Density

Details: HDPE typically has a density range of 940-970 kg/m³. Density affects material properties like stiffness, barrier properties, and processability.

4. Using the Calculator

Tips: Enter the mass of your HDPE sample in kilograms and its volume in cubic meters. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: What is the typical density range for HDPE?
A: High-Density Polyethylene typically ranges from 940 to 970 kg/m³, with most commercial grades around 950 kg/m³.

Q2: How does HDPE density compare to other plastics?
A: HDPE is denser than LDPE (910-925 kg/m³) but less dense than PP (900-920 kg/m³) and much lighter than metals.

Q3: What affects HDPE density?
A: Density is affected by molecular weight, crystallinity, additives, and processing conditions.

Q4: Why is density important for HDPE?
A: Density correlates with mechanical properties, chemical resistance, and processing characteristics.

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