Mechanical properties and strengthening mechanism of epoxy resin reinforced with nano-SiO2 particles and multi-walled carbon nanotubes

Data supporting micromechanical models for the estimation of Young's modulus and coefficient of thermal expansion of titanate nanotube/Y2W3O12/HDPE ternary composites

“…Therefore, corresponding value of hydrothermally synthesized titanate nanoribbons [2] was assumed, which is similar to Young's modulus of TiO 2 (ETiO2=282.76GPa) [12], [13].c G f2 is unavailable in the literature. Hence, GY2Mo3O12 was used [14], since bulk moduli of both materials are similar (KY2Mo3O12=21 GPa).dThe product between β and Ef is termed as effective Young's modulus of filler (Eeff).eSince the length of TTNT is much smaller than the specimen thickness, it is expected that TTNT are randomly oriented in 3D [9], [10]. Thus, β1 is assumed as 0.2, value used in the literature as a first approximation for 3D randomly oriented carbon nanotubes [9], [10] and particulate fillers, such as TiO 2 [9], [10].fValue computed from linear fitting of Young's moduli of HDPE/Y 2 W 3 O 12 composites as a function of Y 2 W 3 O 12 vol fraction [9], [10]…”

Graphene oxide grafted by hyperbranched polysiloxane to enhance mechanical and frictional properties of epoxy resin

“…However, the cured EP exhibits inherent brittleness resulting from its rigid structure, which hinders its potential applications in advanced fields such as automotive manufacturing, aerospace engineering and microelectronics industry [3][4][5]. Therefore, many materials (such as nano-SiO 2 [6], nano-Al 2 O 3 [7] and carbon nanomaterials [8,9], etc.) have been introduced into EP resin to achieve excellent thermal and mechanical properties.…”

Fracture and toughening mechanisms of silica- and core–shell rubber-toughened epoxy at ambient and low temperature

“…Due to this brittle nature, the resultant stresses will cause further damage or propagation of existing cracks, which will greatly affect the lifetime of the component and may lead to catastrophic failure [1][2][3]. It is difficult to detect cracks in adhesivelybonded and fibre-composite structures, as the critical flaw size is very small due to their brittle nature, so the epoxies must be modified to prevent premature failure [1][2][3]. They are used in safety-critical structural applications, as they enable lightweight construction and promote fuel efficiency, for example in the construction of aircraft, cars and ships [4,5].…”

“…Although these mechanisms absorb energy and increase toughness, the toughening effect is generally less than that of pre-formed rubber particles [16]. Although the toughening effects of these particles have been studied, most of the work only covers a few selected weight percentages, so can only assume there is a linear increase in toughness for the weight percentages that are not covered [1,21,22]. At low concentrations, the toughness can increase rapidly as there is a large volume of matrix able to undergo the toughening mechanisms, so it may be more cost-effective to use small concentrations of such particles.…”