Claisen rearrangement reaction was employed for the first time to obtain a novel PPTA bearing reactive allyl and hydroxyl groups which may act as a sizing agent of Kevlar fibers to improve the interface structure and interfacial adhesion of rubber or epoxy based composites.

The effect of carbon black on the mechanical properties of elastomers is of great interest, because the filler is one of principal ingredients for the manufacturing of rubber products. While fillers can be used to enhance the properties of elastomers, including stress-free swelling resistance in solvent, it is widely known that the introduction of fillers yields significant inelastic responses ...

Investigations of the elastic behavior of bulk elastomers have traditionally proceeded on the basis of classical rubber elasticity, which regards chains as thermally fluctuating but disregards the thermal fluctuations of the cross-links. Herein, we consider an incompressible and flat elastomer film of an axisymmetric shape confined between two large hard co-planar substrates, with the axis of t...

• The roles of material and geometric nonlinearities damping effects in the process elastic wave manipulation are revealed. geometrical nonlinearity AM can manipulate locally resonant Bragg scattering band gaps. coating gaps, but matrix mainly affects effect (Rayleigh linear viscoelastic damping) elastomeric materials lead to appearance a new region changes position width region. suppress propa...

The results showed that (1) the ultimate shear deformation of the rubber bearings with two fixed end plates reached 300% to 400% of the rubber layer thickness. The damage was mainly focused on the rubber layer fracture. The energy dissipation capacity of the bearings was weak, and the hysteresis curve presented a narrow zonal shape. (2) The rubber bearings with unilateral friction sliding had a...

Ethylene Propylene Diene rubber (EPDM), is present in many applications. However, its crosslinked structure makes difficult recycling. The use of devulcanized EPDM, (dEPDM) as a component elastomeric composites, real possibility to reuse EPDM scraps. In this study, three matrices (natural (NR), styrene butadiene (SBR) and rubber) have been tested including recycled component. previously was usi...

Blending of rubber is an important route to modify properties individual elastomeric components in order obtain optimum chemical, physical, and mechanical properties. In this study, a novel modification styrene butadiene (SBR) made by employing acrylic (ACM) blends outstanding mechanical, dynamic, oil resistance achieve those properties, we used unique vulcanizing system that improves the cross...

Abstract The numerical simulation analysis of the fluid-solid coupling ship’s boring water-lubricated bearing is carried out to study influence law inclination and eccentricity rotating shaft on pressure distribution fluid flow state in bearing. results show that tilt changes shape inner passage bearing, resulting unstable When normal, value decreases first then increases axial direction. Howev...

Abstract Diamond-like carbon (DLC) films are deposited on rubber surfaces to protect the components, and surface pretreatment of substrates prior film deposition can improve adhesion between DLC rubber. Thus, principal purpose this work concentrates determining effects argon (Ar), oxygen (O 2 ), nitrogen (N hydrogen (H ) plasma pretreatments friction performance (DLC/rubber). The results indica...