Composite of non-polar organic polymer and ultra-low-wettability carbon black

A semiconductive composite material consisting essentially of (A) a non-polar polyolefin polymer and an electrical conducting effective amount of (B) an ultra-low-wettability carbon black (ULW-CB), which has a surface wettability profile characterized by wettability ≤0.0101 at surface coverage of 0.02, and wettability ≤0.0101 at surface coverage of 0.04, and wettability ≤0.0099 at surface coverage of 0.06, and wettability ≤0.0111 at surface coverage of 0.08, and wettability ≤0.0113 at surface coverage of 0.10, measured by inverse gas chromatography (IGC) according to Wettability Test Method;

• and a water uptake of from 400 to 2400 parts per million (ppm, weight), measured by Moisture Uptake Test Method,
• wherein the Moisture Uptake Test Method is preformed by drying a carbon black sample in a vacuum over at 100° C. overnight, measuring the weight of the dried carbon black sample placing the dried carbon black sample inside a chamber with well-controlled 80% relative humidity (RH) and temperature 24° C. for 24 hours to give a humidified carbon black sample, weighing the humidified carbon black sample, and calculate the amount of moisture uptake in weight parts per million using the following equation;
• amount moisture uptake=(weight of humidified CB sample-weight of dried CB sample) divided by weight of dried CB sample,
• wherein the Wettability Test Method is preformed using an IGC Surface Energy Analyzer instrument and the following steps;
• pack approximately 10 to 20 milligrams (mg) of amount of a test sample of neat carbon black into individual silanized glass column (300 mm long by 4 mm inner diameter, precondition the carbon black-packed columns for 2 hours at 100° C. and 0% relative humidity with helium carrier gas to normalize samples, perform measurements with 10 standard cable centimeter per minute (sccm) total flow rate of helium, and use methane for dead volume corrections, measure components at 100° C. and 0% relative humidity.