Preparation and properties of titanate modified carbon nanotubes/polyurethane composites
The multi-walled carbon nanotubes(MWCNTs)were oxidized by Fenton reagent,and then grafted with isopropyl tris(dioctyl pyrophosphate acyloxy)titanate(QX201),and the modified MWCNTs(MWCNT-QX201)were mixed with PU to prepare composites.The experimental results indicated that the QX201 grafted onto the surface of MWCNTs could effectively improve the compatibility between MWCNTs and PU.When the amount of MWCNTs was 1.5％of the mass of PU,the mechanical and thermal properties of the composites were significantly improved by MWCNTs-QX201,in which the tensile strength was increased by 25.5％,the initial thermal decomposition temperature and the maximum heat loss rate temperature were increased by 6.4 ℃ and 3.1 ℃,respectively.
NETL
NSTL
万方数据
