Nanoindentation Studies of Nano Alumina-Reinforced Ether-Linked Bismaleimide Toughened Epoxy-Based Nanocomposites

Abstract

The scope of the present work is to toughen the commercial epoxy resin using ether linked bismaleimide (e-BMI) with varying chain lengths C4 and C8. The C4 e-BMI toughened system proves to exhibit synergistic effect on both tensile and impact strengths. Hence the secondary objective of the work is to study the effect of nano alumina on C4 e-BMI toughened epoxy. To overcome the disadvantages generated by the loose nanoparticle agglomerates dispersed in polymer composite, the nanoparticles were functionalized using 3-Glycidoxypropylmethoxysilane (GPS). The nanoindentation behavior of the C4 e-BMI epoxy matrix filled with GPS alumina was studies using Nanoindentation. The strengthening of the matrix interaction by the means of covalent bonding and better dispersion of nanoparticles resulted in enhanced nanohardness and elastic modulus. The addition of GPS Al 2 O 3 nanoparticles to 15 wt.% C4 e-BMI/epoxy matrix increases the nanohardness and elastic modulus up to 5 wt.% of filler loading beyond which the hardness and elastic modulus decrease.

Enhanced mechanical and dielectric properties of lamellar aluminum phosphate/bismaleimide composites by interface modification with maleimidopropyl triethoxysilane

“…The addition of A‐LAP and M‐LAP NPs can improve the dispersity and interaction with the BBMI matrix. When temperature was higher than the T g , the chain segment movements of BBMI matrix begun to be accelerated, while the combination of A‐LAP and M‐LAP NPs could hinder the molecular chain movement 32 . The thermomechanical properties of 1.0% M‐LAP/BBMI is further improved due to the better dispersion of LAP NPs.…”

“…When temperature was higher than the T g , the chain segment movements of BBMI matrix begun to be accelerated, while the combination of A-LAP and M-LAP NPs could hinder the molecular chain movement. 32 The thermomechanical properties of 1.0% M-LAP/BBMI is further improved due to the better dispersion of LAP NPs. Therefore, the combination of M-LAP NPs and BBMI matrix is contributing factor to improve the glass transition.…”

Synergistic Toughening in Ternary Silica/Hollow Glass Spheres/Epoxy Nanocomposites

“…It is well established that hybrid composites, i.e., polymers containing several types of fillers, might exhibit excellent physical characteristics [17,18] that are higher than those of the singleparticle filled composites [19][20][21] . In this regard, the use of two types of modifiers might lead to ternary epoxies with enhanced values of fracture toughness [22À24] .…”

Study on Tribological Properties of Carbon/Aramid Fabric Coatings Modified by Boron Nitride of Single Layer

“…In addition, epoxies are one of the most favored polymer matrices for developing highperformance composites, especially for aviation and aerospace fields [1][2][3][4][5] .…”