scholarly journals The Use of Complex Additives for the Formation of Corrosion- and Wear-Resistant Epoxy Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-5 ◽  
Author(s):  
Andriy Buketov ◽  
Oleksandr Sapronov ◽  
Mykola Brailo ◽  
Danylo Stukhlyak ◽  
Serhii Yakushchenko ◽  
...  
Keyword(s):  
Wear Rate ◽  
Epoxy Matrix ◽  
Epoxy Composite ◽  
Electrochemical Reaction ◽  
Composite Coatings ◽  
Corrosion And Wear ◽  
Epoxy Composites ◽  
Epoxy Binder ◽  
Water Medium ◽  
Rational Combination

The corrosion resistance and hydroabrasive resistance of the developed epoxy composite coatings are investigated in this paper. The analysis of the penetration index change after τ = 50–150 days of immersion in a water medium and 10% sulfuric acid solution is carried out. The optimal ratio of the modifier and nanodispersed (Si3N4, Al2O3, AlN, and TiN) and fibrous (viscose, polyamide, matka silk, rong, and cashmere) fillers in the epoxy binder is determined. It was allowed to slow down the process of electrochemical reaction on the metal surface. The penetration of aggressive media in such a coating during the time t = 150 days is 0.8–2.8%. It is 1.5–2 times lower than the similar indexes of the initial epoxy matrix. The rational combination of the fibrous filler (wool, acrylic PAN, and cashmere), modifier, and nanodispersed (Si3N4, AlF3, IH, and ZrH) filler in the epoxy binder is found, which allows to provide optimum indexes of wear rate. The wear rate under the action of a hydroabrasive of such a coating is I = 0.20%, which is 4 times lower than the similar indexes of the initial epoxy matrix. The wear mechanism of such coatings is caused by the physical and mechanical processes of microcutting and plastic deformation of the surface layer of the material.

Corrosion and wear resistance behavior of nano-silica epoxy composite coatings

2015 ◽  
Vol 81 ◽  
pp. 132-139 ◽  
Author(s):  
Sironmani Palraj ◽  
Muthiah Selvaraj ◽  
Kuppaianpoosari Maruthan ◽  
Gopalakrishnan Rajagopal
Keyword(s):  
Wear Resistance ◽  
Epoxy Composite ◽  
Composite Coatings ◽  
Corrosion And Wear ◽  
Nano Silica

A Study on the Effect of Nano-Magnesium Hydroxide on the Flammability of Epoxy Resins

2009 ◽  
Vol 151 ◽  
pp. 72-78 ◽  
Author(s):  
Marta Martins ◽  
Celeste M.C. Pereira
Keyword(s):  
Heat Release ◽  
Magnesium Hydroxide ◽  
Release Rate ◽  
Epoxy Matrix ◽  
Cone Calorimeter ◽  
Epoxy Resins ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Composite Heat ◽  
Unfilled Resin

In this work the effect of nano-magnesium hydroxide (nano-Mg(OH)2) on the flammability of epoxy composites is presented and compared with the traditional flame retardant used in just small amounts for epoxy resins, ammonium polyphosphate (APP). The fire reaction properties of epoxy composites were obtained by cone calorimeter tests. It was observed that the flammability of the unfilled resin is significantly changed with nano-Mg(OH)2 addition and reductions of 33, 22 and 23% in the epoxy composite heat release rate peak (PHRR) by incorporating 10%, 5 % and 1% of nano-Mg(OH)2, respectively, were achieved. Cone calorimeter analyses confirm the better behavior of APP composites compared with nano-Mg(OH)2 composites. SEM micrographs show some agglomerations on the distribution of nano-Mg(OH)2 in the epoxy matrix.

Influence of Physical Fields on Functional Properties of Polymeric Nanocomposites

2019 ◽  
Vol 968 ◽  
pp. 176-182 ◽  
Author(s):  
Petro Savchuk ◽  
Vitalii Kashytskyi ◽  
Victoria Malets ◽  
Dmitro Matrunchyk ◽  
Anastasia Kushniruk
Keyword(s):  
Composite Materials ◽  
Functional Properties ◽  
Epoxy Matrix ◽  
Epoxy Composite ◽  
Composite Coatings ◽  
Optimum Composition ◽  
Polymeric Nanocomposites ◽  
Ultrasonic Radiation ◽  
Fullerene Black ◽  
Physical Fields

The conditions for the formation of epoxy composite coatings filled with nanodispersed particles of fullerene black are investigated. The efficiency of the use of electromagnetic and ultrasonic radiation for modifying the composition based on the epoxy matrix has been confirmed. The paper describes the optimum composition and mode of formation of epoxy composite materials filled with fullerene black.

scholarly journals Effect of toughened polyamide/carbon fiber interlace braid fabric on the mechanical performance of CFRP laminates

2020 ◽  
Vol 29 ◽  
pp. 096369352090616
Author(s):  
Jong Hyun Eun ◽  
Dong Hyun Kim ◽  
Joon Seok Lee ◽  
Jin Sung Chon
Keyword(s):  
Carbon Fiber ◽  
Brittle Fracture ◽  
Epoxy Matrix ◽  
Composite Laminates ◽  
Mechanical Performance ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Fatigue Properties ◽  
Matrix Resin ◽  
The Matrix

Delamination resistance and epoxy matrix brittle fracture have been the main issues in carbon/epoxy composites laminates. Various studies have been reported to complement the brittle fracture of epoxy matrix. Conventional methods of fabricating toughened carbon/epoxy composite laminates were thermo-plastic veils and films interleaving methods, directly toughening the matrix resin and dispersing nanoparticles in the matrix. In this study, the carbon/epoxy composites laminates were manufactured using carbon fiber/polyamide fiber braided fabrics. The chemical interactions between polyamide and epoxy matrix resin were investigated by Fourier transform infrared spectroscopy, which resulted in ring opening of the epoxide group by the amide group. The compression after impact strength and the interlaminar toughness of the carbon/epoxy composite laminate were increased by 31%, and the strain energy release rates were increased by 120% compared to the virgin interface composite. In the case of carbon/epoxy composite laminates interlaced with polyamide fibers, the mechanical properties, such as the tensile strength and fatigue properties, were improved as tensile modulus decreased.

Compression Behavior of a Self-Healing Fibre Reinforced Epoxy Composite

2011 ◽  
Vol 55-57 ◽  
pp. 1281-1286
Author(s):  
Jim Lee ◽  
Debes Bhattacharyya ◽  
Ming Qiu Zhang ◽  
Yiu Wing Mai ◽  
Yan Chao Yuan
Keyword(s):  
Polymer Composite ◽  
Glass Fibre ◽  
Epoxy Matrix ◽  
Epoxy Composite ◽  
Polymer Materials ◽  
Epoxy Composites ◽  
Self Healing ◽  
Compression Behavior ◽  
Healing Efficiency ◽  
Glass Fibre Reinforced

The concept of introducing self-healing capabilities in polymer materials and systems has been based on mimicking biological self-healing materials and systems, for example, materials like proteins have phenomenal capabilities in self-healing damaged biological structures. This work has been extended to investigate self-healing capabilities of fibre reinforced epoxy composites. Microencapsulated epoxy and mercaptan healing agents were incorporated into a glass fibre reinforced epoxy matrix to produce a polymer composite capable of self-healing. The specimens containing the microencapsulated epoxy and mercaptan healing agents did gain excellent strength and achieved a healing efficiency up to 140%.

scholarly journals Epoxy\Epoxy Composite\Epoxy Hybrid Composite Coatings for Tribological Applications—A Review

Polymers ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 179
Author(s):  
M. M. A. Baig ◽  
M. Abdul Samad
Keyword(s):  
Tribological Properties ◽  
Hybrid Composite ◽  
Review Paper ◽  
Epoxy Composite ◽  
Composite Coatings ◽  
Load Bearing Capacity ◽  
Corrosive Media ◽  
Fluid Handling ◽  
Low Load ◽  
Made In

Epoxy composite coating systems generally find their usage in applications such as, fluid handling systems to protect components from corrosive media. However, their use in demanding tribological applications such as, in sliding components of machines, are known to be limited. This is often attributed to their low load bearing capacity combined with poor thermal stability under severe p-v regimes. Researchers have tried to enhance the tribological properties of the epoxy coatings using a combination of several types of micro/nano sized fillers to produce composite or hybrid composite coatings. Hence, this review paper aims to focus on the recent advances made in developing the epoxy coating systems. Special attention would be paid to the types and properties of nano-fillers that have been commonly used to develop these coatings, different dispersion techniques adopted and the effects that each of these fillers (and their combinations) have on the tribological properties of these coatings.

scholarly journals High modulus polyimide particle-reinforcement of epoxy composites

2021 ◽  
Author(s):  
Johannes Essmeister ◽  
M. Josef Taublaender ◽  
Thomas Koch ◽  
D. Alonso Cerrón-Infantes ◽  
Miriam M. Unterlass ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Composite Materials ◽  
Epoxy Matrix ◽  
Epoxy Composites ◽  
High Modulus ◽  
Particle Reinforcement

A novel class of fully organic composite materials with well-balanced mechanical properties and improved thermal stability was developed by incorporating highly crystalline, hydrothermally synthesized polyimide microparticles into an epoxy matrix.

Anticorrosion performance of Zn-Al-Gr/waterborne epoxy composite coatings on mild steel

2019 ◽  
Vol 6 (9) ◽  
pp. 0950a8
Author(s):  
She Jia ◽  
Zhengjun Yao ◽  
Shasha Zhang ◽  
Zelei Zhang ◽  
Xuewei Tao ◽  
...  
Keyword(s):  
Mild Steel ◽  
Epoxy Composite ◽  
Composite Coatings ◽  
Waterborne Epoxy ◽  
Anticorrosion Performance

Evaluation of Lamina Properties and Fractographic Studies on Glass/Epoxy, Carbon/Epoxy and Kevlar/Epoxy Composites

2015 ◽  
Vol 813-814 ◽  
pp. 46-50 ◽  
Author(s):  
Julias A. Arockia ◽  
Kumar N. Ram ◽  
Murali Vela
Keyword(s):  
Electron Microscope ◽  
Scanning Electron Microscope ◽  
Tensile Test ◽  
Epoxy Composite ◽  
Epoxy Composites ◽  
Strain Gauges ◽  
Transverse Strain ◽  
Molding Machine ◽  
Mechanism Of Failure ◽  
Scanning Electron

In this study the lamina properties of glass/epoxy, carbon/epoxy and kevlar/epoxy composite along their principal coordinate axes were evaluated by performing tensile test. The laminates were prepared by hand lay-up technique and compressed using a compression molding machine at 70 oc and 80 bar pressure. The test was conducted as per ASTM standard D3039 by affixing strain gauges in the specimen to obtain the longitudinal and transverse strain. The mechanism of failure was also studied by performing fractographic analysis using scanning electron microscope which shows peeled off fiber surfaces in the case of kevlar/epoxy laminate.

Research on Properties of CNF/Glass Fiber/Epoxy Composites

2014 ◽  
Vol 513-517 ◽  
pp. 161-164
Author(s):  
Xing Kai Chen
Keyword(s):  
Infrared Spectrum ◽  
Glass Fiber ◽  
Functional Groups ◽  
Carbon Nanofibers ◽  
Epoxy Matrix ◽  
Tensile Modulus ◽  
Epoxy Composites ◽  
Reinforcement Efficiency

In the present investigation, carbon nanofibers (CNF) were dispersed in epoxy matrix to form CNF/glass fiber/epoxy composites. Before blending, CNF was oxidated to get more functional groups on CNF and improve the interface combination between resin and CNF, the infrared spectrum was used to test the efficiency. After that, tensile modulus tests were carried on for CNF/glass fiber/epoxy composites with different CNF fractions, the results indicated that there were slight improvements of tensile modulus when adding CNF. At 3.0 wt% of CNF, composites have the high improvement of tensile modulus, but the reinforcement of CNF decreased at 5.0 wt% of CNF. And the CNF reinforcement efficiency was analyzed using modified Coxs model and rule of mixture.

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