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Superior Tough, Highly Wear Durable and Self-Lubricating Epoxy Nanocomposite Co-Enhanced by “Soft” and “Hard” Nanomaterial

SSRN Electronic Journal
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Article Description

Despite many efforts are being undertaken to design high tribo-performance epoxy nanocomposite, it still remains a great challenge at the expense of matrix strength for actual demanding engineering application. Herein, we propose a useful strategy (synergism of “soft” and “hard” nanomaterials) to construct epoxy nanocomposite with superior toughness, highly wear durability and self-lubricating ability, especially the interface issue between filler and matrix can be well improved without any surface treatment. In brief, we composited the graphene with molybdenum disulfide to fabricate lubricant rGO-MoS2 nanocomposite. The soft component (hyperbranched polysiloxane) with typical flexible Si-O-C backbone was synthesized via one-pot ester exchange polymerization. These two materials can be well used to construct EP composite, and their advantages regarding lubricity and toughen are well exerted. By optimizing the composition, the material with high mechanical strength (37.4 KJ·m2), low friction coefficient (0.16) and wear rate (3.21 × 10-6 mm3/(N·m)) was obtained. Interestingly, TEM of ultra-thin epoxy slice shows the interface state of rGO-MoS2 within resin matrix will be influenced when hyperbranched polysiloxane is introduced, which is the main reason that caused the admirable outcomes. Highlighting the compelling comprehensive effect, this work paves a new way toward designing high-performance polymer tribo-materials for real engineering application.

Bibliographic Details

Yuanbo Zhang; Yang Kaiming; Liu Rui; Lin Li; Zhengyan Chen; Xinyi Feng; Hongxia Yan

Elsevier BV

Epoxy resin; nanocomposite; Mechanical strength; Hyperbranched polysiloxane

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