Low-density proppant phenolic epoxy composites modified

Using liquid phenolic resin impregnated , coated with epoxy resin and then were prepared in a nut shell is Low density Maide proppants matrix composite material by INSTRON universal material testing Machine , TGA, SEM and other testing methods to test the performance of the composites. Studies have shown that phenolic impregnated When the concentration of a solution of 70% formaldehyde resins , composite materials under 60MPa pressure with a minimal amount of deformation

With the increase of the amount of epoxy resin particles in the surface coating layer under the pressure of 60MPa in the composite material ; value Gradually reducing the amount of deformation when the resin is greater than 25% , the amount of deformation changes little ; TGA showed Compound Improve the heat resistance of the material ; SEM found uncoated surface -modified particles have more holes, covering changes Of the smooth surface of the composite material , significantly reduced the holes ; microscope photo shows uncoated change

Under the pressure of 60MPa particles serious rupture, but no rupture phenomenon composites and particulate table There are obvious surface resin layer ; absorbing capacity from 30.45% down to 6.58% , solvent resistance significantly raise High .