The Preparation And Study Of Flame Retardant Properties Of Metal Phosphate Nano Hybrid Material With Controllable Morphology

We obtained APHNR, APHNSH, FPHNR, FPHNSH, ZPHNR, ZPHNSH six kinds of metal oxide nano hybrid flame retardant additives, through the reaction between the two organic phosphonate acid diphenyl phosphonate acid(DPPA) and phenyl phosphonate acid(PPA), and three kinds of metal precursor, aluminum hydroxide, ferric hydroxide, zinc acetate. By means of Fourier transform infrared(FTIR) spectroscopy, X-ray powder diffraction(XRD), field emission scanning electron microscopy(SEM), thermogravimetric analysis(TG) and other testing methods, phosphonate acid ligands in the control of the decisive role of the morphology of the metal phosphonate acid hybrid materials are discussed in detail. And asserted the key factor of the phosphonate acid ligand chemical structure in controlling the formation of nano rod structure or nano layered structure, that is ?-? stacking interactions are the key role in the assembly of nano rod structure, and nano layered structure rely on relatively weak van der Waals force. It is concluded that the dual hydroxyl functional group is formed by the formation of layered nanostructures, while the single hydroxyl functional group is easy to form the rod like nanostructures. Thermal gravimetric analysis showed that the thermal stability of several kinds of hybrid materials was improved by, and evaluated the prospect of additive flame retardant.Added two different morphologies of metal phosphonate acid nano hybrid flame retardant to the bisphenol A glycidyl etherthe epoxy resin according to a certain proportion.Then through a temperature controlled program to cure the resin. Through the limiting oxygen index(LOI) test, Raman test of carbon residue, SEM of char morphology, and other aspects, multi angle measure the combustion behavior of epoxy resin composite, judging flame retardant effect. It was found that the LOI of APHNR/EP and FPHNSH/EP could reach 29.8%, and the other samples were improved with the addition of 7.8%wt. F rom the test result of TG-FTIR combined with SEM test, the conclusion was drawn that the flame retardant effect is a kind of combination of solid phase and gas phase.