Study on modification of nano silica by [3- (2-Aminoethyl) aminopropyl] trimethoxy silane (KH-792) to reinforce polymer film based on epoxy resin Epon 1001X75

Abstract

The surface of nano silica (NS) was modified by [3- (2-Aminoethyl) aminopropyl] trimethoxy silane (KH-792) to increase surface activity. Evaluate the efficiency of grafting [3- (2-Aminoethyl) aminopropyl] trimethoxy silane (KH-792) into NS was characterized by Fourier Transform Infrared Spectrometry (FTIR) and Thermo Gravimetric Analysis (TGA). NS and modified nano silica (m-NS) were dispersed into epoxy resin Epon 1001X75 by mechanical stirring and ultrasonic vibration. Epoxy resin Epon 1001X75 was cured with Epikure 3125 (Epi3125). The structural morphology and dynamic mechanical properties of materials were characterized by Scanning Electron Microscopy (SEM), Transmission Electron Microscopy (TEM), and Dynamic Mechanical Analysis (DMA). The results showed that NS was modified with the content of 20 wt% KH-792 for the highest denaturation efficiency. With adding the content of 1 wt% NS (NS-1), the mechanical properties of epoxy polymer film Epon 1001X75/Epi3125/NS-1 increased the impact strength from 20kG.cm to 52.5 kG.cm (increased by 162.5 %). Adding the content of 2 wt% m-NS (m-NS-2) improved the impact strength of epoxy polymer film Epon 1001X75/Epi3125/m-NS-2 from 20 kG.cm to 55 kG.cm (increased by 175 %). The glass transition temperature (Tg) of epoxy polymer composites Epon 1001X75/Epi3125, Epon 1001X75/Epi3125/NS-1, and Epon 1001X75/Epi3125/m-NS-2 gradually increased by 48oC, 75oC, and 79oC. The obtained results showed that m-NS with KH-792 increased the mechanical properties of epoxy polymer film Epon 1001X75/Epi3125.

Study on fabricating epoxy coatings reinforced with iron oxide flakes and nano silica

“…Mechanical and physical properties of nanocomposite materials increase with the appropriate content of nano silica. 4,[14][15][16][17][18][49][50][51] Nano silica acts as a filler in the epoxy polymer Epotec YD011X75/Domide G5022. Nanosilica particles increase the bond of the filler with the polymer substrate, increase shielding, and fasten the bonds with the substrate polymer.…”

“…Similar results were presented in studies. 4,[14][15][16][17][18][49][50][51] Epoxy coatings based on epoxy resin Epotec YD011X75/ Domide G5022 with flake MIO pigment and nano silica. From the results in Effects of flake micaceous iron oxide pigment on mechanical properties of epoxy coating, the mass ratio of YD011/(MIO/P/T) as 40/60 (wt/wt) was selected as the most appropriate (paint formula MIO2).…”

“…Nano silica traps heat and prevents the release of volatiles when the polymer burns. [49][50][51] Therefore, the…”