文献类型：专利

英文题名：Enhanced bulk nano carbon fiber/carbon composite material comprises nanocarbon fiber reinforced block body and carbon fiber reinforced phenolic resin composite

作者：GE X;LING L;LONG D;QIAO W;WANG J;WU X

机构：[1]UNIV EAST CHINA SCI & TECHNOLOGY

申请号：CN103342574-A

申请日：2013-07-25

公开日：2013-10-09

语种：英文

收录：DERWENT

摘要：NOVELTY - Enhanced bulk nano carbon fiber/carbon composite material comprises nanocarbon fiber reinforced block body and carbon fiber reinforced phenolic resin composite, in which nanocarbon fiber reinforced block body is 10-80 wt.%. USE - Enhanced bulk nano carbon fiber/carbon composite material. ADVANTAGE - The enhanced bulk nano carbon fiber/carbon composite material has low coefficient of friction, low wear, high strength, and high modulus characteristics. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation enhanced bulk nano carbon fiber/carbon composite material by filling mold with catalyst; putting mold into tubular furnace; heating furnace at 450-750 degrees C for 1-4 hours under protection of argon/hydrogen gas; switching to carbon source gas to react for 10-200 minutes; switching again into argon/hydrogen gas; cooling at room temperature to obtain block-shaped nanocarbon fiber, in which catalyst is nickel-iron alloy, nickel-copper alloy, or iron-nickel-copper alloy, volume ratio of argon/hydrogen gas is 10-80%, carbon source gas and hydrogen gas is methane, ethylene, ethane, propane, or benzene gas, and volume fraction of carbon source gas with hydrogen is 10-80%; impregnating block-shaped nanocarbon fiber with phenolic resin absolute ethyl alcohol solution under vacuum-pressing condition at 0.5-5 MPa; taking out and placing in vacuum tank; drying at 30-70 degrees C for 12-72 hours to obtain block-shaped carbon-phenolic-resin composition, in which weight ratio block-shaped nanocarbon fiber and phenolic resin absolute ethyl alcohol solution is (1:50)-(1:500); putting block-shaped carbon-phenolic-resin in mold; molding at 120-200 degrees C and 50-150 MPa; putting product into carbonization furnace; heating at 700-1000 degrees C under protection of nitrogen atmosphere to carbonized phenolic resin and to obtain block-shaped nanocarbon fiber/carbon composite material; repeating impregnation step to carbonization step to obtain composite material; and performing high temperature treatment at 2200-3000 degrees C to obtain enhanced bulk nanocarbon fiber/carbon composite material.