What are the differences between PVC and PE sheaths?

November 19, 2025
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I. What are the differences between PVC and PE sheaths?

1. They differ in temperature resistance and aging resistance.

2. PVC contains chlorine, produces a strong odor when burned, and has some flame retardant properties. Its chemical formula is (-CH2-CHCl-). It comes in various colors and is commonly seen in daily life. Prolonged exposure to sunlight will cause it to crack. PE is relatively softer.

3. PE produces no smoke, is much lighter than PVC, and is flammable. Its chemical formula is (-CH2-CH2-). It is also sensitive to light and is usually black.

4. To distinguish them in practice, light a lighter, smell the odor, and check for ash after burning (PVC produces ash, PE does not). This will help you determine their flammability.