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- W3136349785 abstract "The needle coke was prepared by the co-carbonized of ethylene tar pitch with waste polystyrene.The properties of mesophase pitches from the co-carbonization were characterized by using apparent viscometer,FT-IR,1H NMR,and the cokes were studied with the means of polarized light optical microscope and coefficient of thermal expansion(CTE).The results showed that more alkyls in mesophase molecule were formed during the co-carbonization,and the content of alkyl hydrogen was increased from 0.2315 to 0.3233,which greatly improved the optical texture and CTE value of the needle coke.The CTE value was decreased from 3.2×10-6/℃ to 0.3×10-6/℃ and the optical texture of the coke was changed from some domain texture to flow domain of high uniaxial orientation after adding waste polystyrene into ethylene tar pitch.The low viscosity of the mesophase pitches favored the development of mesophase and highly uniaxial arrangement,and the enough gas produced during the solidification also favored the needle arrangement in coke molecules." @default.
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- W3136349785 date "2009-10-25" @default.
- W3136349785 modified "2023-09-27" @default.
- W3136349785 title "NEEDLE COKE FORMATION DERIVED FROM CO-CARBONIZATION OF ETHYLENE TAR PITCH AND WASTE POLYSTYRENE" @default.
- W3136349785 hasPublicationYear "2009" @default.
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