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Anyone know these wire insulation/dielectric and which is better: CPP and XLPE
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1. The dielectric constant of XLPE (high-density crosslinked polyethylene) is 2.2
XLPE is a common isulation material for cables, with a performance level considered a clear step above PVC but not as good as PTFE or FEP (Teflon).
2. The dielectric constant of polypropylene is 2.2–2.36
CPP is a combination of standard polypropylene and high density polyethylene. I don't know of any cables that feature a CPP dielectric, nor can I find the specific dielectric constant of CPP.
Here's what I found regarding CPP:
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Co-Polymer Polypropylene CPP sheet is commonly used in the chemical and food industry. It has a higher impact strength than standard polypropylene due to the inclusion of high density polyethylene in the base resin. This makes co-poly polypropylene excellent for high stress and impact applications. Co-Polymer Polypropylene CPP sheet , is a common plastic that offers a good balance of thermal, chemical and electrical properties. It has an excellent strength to weight ratio and normally has a hard glossy surface. The natural colour is white with a touch of transparency.
PROPERTIES: Excellent chemical resistance, Excellent corrosion resistance, Rigid, Lightweight, Resists stress cracking, Better impact resistance than PP, CPP Sheet is easily fabricated, Low moisture absorption, Good electrical properties.
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