Preparation and Flame Retardancy of Waterbased Phenolic Resin/Silica Hybrid Material Prepared by <i>In Situ</i> Polymerization

Abstract

Waterbased phenolic resin/silica hybrid material was prepared by situ polymerization using TEOS (tetraethyl orthosilicate) as precursor. Effects of pre-hydrolysis condition of TEOS and TEOS content on the formation and stabilization of the hybrid material were studied. The flammability of the prepared composite material was studied by TGA (Thermo gravimetric analysis), LOI (limited oxygen index) and UL-94 test. The results show that stable waterbased hybrid material can be prepared when the amount of ammonia is 0.020g. TGA, LIO and UL-94 test result show that the hybrid material presents better flame retardancy.

Nano-silica modified phenolic resin film: manufacturing and properties

“…Due to its chemical structure and cross-linking structure, phenolic resin has excellent flame retardant performance and high temperature resistance [2,3]. It can be widely used in adhesives and insulating materials [4][5][6]. And phenolic resin-based composite materials have the advantages of low cost, good heat resistance, flame retardancy, and corrosion resistance, which can be widely used as thermal protection materials in the aerospace field, especially used in key components such as the expansion section of rocket engine nozzle [7][8][9][10][11][12].…”