Tribological and mechanical properties of self-lubrication epoxy composites filled with activated carbon particles containing lubricating oil

RSC Advances ◽  
2016 ◽  
Vol 6 (58) ◽  
pp. 52596-52603 ◽  
Author(s):  
Meiling Li ◽  
Huaiyuan Wang ◽  
Dujuan Liu ◽  
Rui Wang ◽  
Yanji Zhu
Keyword(s):  
Mechanical Properties ◽  
Activated Carbon ◽  
Epoxy Resin ◽  
Epoxy Composites ◽  
Lubricating Oil ◽  
Resin Matrix ◽  
Epoxy Resin Matrix ◽  
Carbon Particles ◽  
Activated Carbon Particles

A self-lubrication composite incorporating activated carbon particles containing lubricating oil (AC-oil) was fabricated in an epoxy resin matrix.

scholarly journals Assessing the Flexural Properties of Epoxy Composites with Extremely Low Addition of Cellulose Nanofiber Content

2020 ◽  
Vol 10 (3) ◽  
pp. 1159 ◽  
Author(s):  
Yingmei Xie ◽  
Hiroki Kurita ◽  
Ryugo Ishigami ◽  
Fumio Narita
Keyword(s):  
Mechanical Properties ◽  
Epoxy Resin ◽  
Flexural Modulus ◽  
Strengthening Mechanism ◽  
Short Fiber ◽  
Cellulose Nanofiber ◽  
Resin Matrix ◽  
Element Analysis ◽  
Epoxy Resin Matrix ◽  
The Matrix

Epoxy resins are a widely used common polymer due to their excellent mechanical properties. On the other hand, cellulose nanofiber (CNF) is one of the new generation of fibers, and recent test results show that CNF reinforced polymers have high mechanical properties. It has also been reported that an extremely low CNF addition increases the mechanical properties of the matrix resin. In this study, we prepared extremely-low CNF (~1 wt.%) reinforced epoxy resin matrix (epoxy-CNF) composites, and tried to understand the strengthening mechanism of the epoxy-CNF composite through the three-point flexural test, finite element analysis (FEA), and discussion based on organic chemistry. The flexural modulus and strength were significantly increased by the extremely low CNF addition (less than 0.2 wt.%), although the theories for short-fiber-reinforced composites cannot explain the strengthening mechanism of the epoxy-CNF composite. Hence, we propose the possibility that CNF behaves as an auxiliary agent to enhance the structure of the epoxy molecule, and not as a reinforcing fiber in the epoxy resin matrix.

Reinforced interface and mechanical properties of high strength carbon fiber composites

2020 ◽  
pp. 095400832095739
Author(s):  
Zibao Jiao ◽  
Zhengjun Yao ◽  
Jintang Zhou ◽  
Pengshu Yi ◽  
Chuanjun Lu
Keyword(s):  
Mechanical Properties ◽  
Carbon Fiber ◽  
Epoxy Resin ◽  
Carbon Fibers ◽  
Dynamic Contact Angle ◽  
Dynamic Contact ◽  
Resin Matrix ◽  
Carbon Fiber Composites ◽  
Epoxy Resin Matrix ◽  
Winding Tension

Based on the surface analysis of carbon fiber, an epoxy resin matrix with good wettability to carbon fibers had been developed and studied, and the influence of winding tension on the interface and mechanical properties of the composite were studied. The surface morphology of carbon fiber and the active functional groups of sizing agent were analyzed. In order to form a good interface combination, the wettability between carbon fibers and epoxy resin matrix was characterized by dynamic contact angle. The winding tension played an important role in the mechanical properties of composites. Therefore, a kind of carbon fiber reinforced composites, Naval Ordnance Laboratory (NOL) rings were fabricated using different winding tensions. Particularly, when the winding tension was 30 N, the interfacial bonding between carbon fibers and resin matrix was the most compact and firm. The tensile strength and interlaminar shear strength (ILSS) of NOL rings reached high values, 2712 MPa and 75 MPa, respectively.

Alumina membrane coated activated carbon: a novel strategy to enhance the mechanical properties of a solid catalyst

RSC Advances ◽  
2016 ◽  
Vol 6 (13) ◽  
pp. 10229-10232 ◽  
Author(s):  
Dang-guo Cheng ◽  
Weiyang Jin ◽  
Xiaoli Zhan ◽  
Fengqiu Chen
Keyword(s):  
Mechanical Properties ◽  
Activated Carbon ◽  
Thin Layer ◽  
Solid Catalyst ◽  
Alumina Membrane ◽  
Carbon Particles ◽  
Novel Strategy ◽  
Activated Carbon Particles

A novel strategy is described to enhance mechanical properties of solid catalyst by coating a thin layer of alumina membrane on activated carbon particles. This method can make the attrition index of activated carbon decrease significantly.

scholarly journals Polymer Composite Materials Fiber-Reinforced for the Reinforcement/Repair of Concrete Structures

Polymers ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2058 ◽  
Author(s):  
George Soupionis ◽  
Pantelitsa Georgiou ◽  
Loukas Zoumpoulakis
Keyword(s):  
Mechanical Properties ◽  
Heat Treatment ◽  
Composite Materials ◽  
Carbon Fiber ◽  
Epoxy Resin ◽  
Compression Strength ◽  
Artificial Aging ◽  
Bending Strength ◽  
Resin Matrix ◽  
Epoxy Resin Matrix

The present paper deals with the use of polymeric matrix composite materials reinforced with carbon fiber as concrete shear reinforcement materials. Accordingly, cement specimens were manufactured and coated with various types of carbon fabrics and epoxy resin in liquid and solid form (paste). Additionally, composite materials of epoxy resin matrix reinforced with carbon fiber fabrics were manufactured. In all the specimens, the mechanical properties were estimated; the cement samples coated with composite materials of epoxy resin matrix reinforced with carbon fiber fabrics were tested for compressive strength, while the other specimens were tested for shear and bending strength. The specimens were subjected to artificial aging through heat treatment for 8, 12 and 16 days. During the process of artificial aging, the temperature in the chamber reached the range of 65–75 °C. These composite materials exhibited high mechanical properties combined with adaptability. Both an external deterioration of the materials as well as a reduction in mechanical properties during their artificial aging heat treatment were observed. This was shown in the specimens that were not subjected to artificial aging, with an applied compression strength of 74 MPa, and after the artificial aging, there was a decrease of ~7%, with the compression strength being reduced to 68 MPa.

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