Global photovoltaic installation continues to outpace earlier forecasts, and the cabling inside each array is getting more demanding. PV strings run outdoors for 25 years or more, exposed to UV, heat cycling, and moisture — yet they must still meet halogen-free flame-retardant expectations in many export markets.
Compounders are responding with cross-linked polyolefin (XLPO) and HFFR formulations that combine weatherability with ATH or MDH loadings above 50%. The recurring technical challenge is the same as in building wire: polar flame retardants do not disperse cleanly in a non-polar polyolefin matrix without a coupling agent.
PE-g-MAH compatibilizer closes that gap. By anchoring filler particles to the polymer through maleic anhydride–hydroxyl reactions, it keeps ATH and MDH evenly distributed through long outdoor service life, preserving elongation and surface quality during high-speed extrusion. For Shengde customers shipping PV cable to Europe, North America, and Southeast Asia, specifying the right grafting rate and MFI for their XLPO line has become a routine part of qualification — not an afterthought.