Environmental-friendly　continuous　process　of　manufacturing　structure-controlled　carbon　black　(CB)　nanoparticles　has　been　developed　by　the　combination　of　advantages　of　alternative-current　(AC)　gliding　arc　plasma　and　direct-current　(DC)　arc　discharge　plasma.　In　this　process,　methane　was　first　decomposed　in　the　low　temperature　AC　gliding　arc　plasma　and　then　further　thermally　pyrolyzed　in　the　DC　arc　discharge　plasma　area.　CB　was　generated　in　the　AC　arc　plasma　area　and　then　continued　to　grow　or　surface　modified　by　DC　arc　plasma　according　to　different　arc　positions,　which　was　determined　by　the　operating　gas　flow　rate.　The　effects　of　AC　arc　and　DC　arc　on　the　yield,　size,　morphology　and　structure　of　particles　have　been　investigated.　The　connection　of　AC　and　DC　plasma　areas　might　cause　totally　different　growth　process　of　nanoparticles.　Formation　mechanism　has　been　discussed　based　on　series　of　physical　characterizations　to　illustrate　the　different　growth　process.　The　essential　properties　of　CB　prepared　by　plasma　have　been　compared　with　three　kinds　of　CB　purchased,　and　then　all　the　CB　nanoparticles　have　been　blended　with　acrylonitrile-butadienestyrene/ethylene-propylene-diene　monomer　composites.　Electrical　conductivity　and　mechanical　properties　as　well　as　the　morphology　of　fracture　surface　of　composites　have　been　characterized.　The　results　indicate　that　CB　prepared　from　AC　plasma　process　shows　excellent　mechanical　reinforcement　and　CB　from　AC + DC　plasma　process　owns　outstanding　electrical　conductivity.　©　2017