Preparation of green cardanol-based epoxy and hardener as primer coatings for petroleum and gas steel in marine environment

Atta, Ayman M.; Al-Hodan, Hamad A.; Hameed, Reda S. Abdel; Ezzat, Abdelrahman O.

doi:10.1016/j.porgcoat.2017.06.002

Cited by 79 publications

(41 citation statements)

References 49 publications

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“…The most recent study was carried out by Atta et al [83], that prepared cardanol novolac epoxy (CNE) resins by reacting cardanol with formaldehyde, followed by epoxidation in glacial acetic acid and epicholohydrin. Then, they prepared a cardanol polyamine hardener (CPA) to cure the cardanol novolac epoxy resins.…”

Section: Sample Epoxy/-ohmentioning

confidence: 99%

A Review of Recent Research on Bio-Based Epoxy Systems for Engineering Applications and Potentialities in the Aviation Sector

2018

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Epoxy resins are one of the most widely used thermosets in different engineering fields, due to their chemical resistance and thermo-mechanical properties. Recently, bio-based thermoset resin systems have attracted significant attention given their environmental benefits related to the wide variety of available natural resources, as well as the resulting reduction in the use of petroleum feedstocks. During the last two decades, considerable improvement on the properties of bio-sourced resins has been achieved to obtain performances comparable to petroleum-based systems. This paper reviews recent advances on new bio-based epoxy resins, derived from natural oils, natural polyphenols, saccharides, natural rubber and rosin. Particular focus has been given to novel chemical formulations and resulting mechanical properties of natural derived- epoxies, curing agents or entire systems, constituting an interesting alternative for a large variety of engineering applications, including the aviation sector. The present work is within the scope of the ECO-COMPASS project, where new bio-sourced epoxy matrixes for green composites are under investigation.

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Section: Sample Epoxy/-ohmentioning

confidence: 99%

A Review of Recent Research on Bio-Based Epoxy Systems for Engineering Applications and Potentialities in the Aviation Sector

2018

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“…The etherification of cardanol with TCT was confirmed by the appearance of the C-O stretching group of the phenoxy group at 1096-1255 cm −1 . The presence of a band at 803 cm −1 (out-of-plane bending of the benzene ring; Figure 1a) elucidated the presence of the m-phenoxy group of cardanol [38]. The lowering of the intensity of the phenolic -OH intense band of cardanol at 3315 cm −1 (-OH stretching) elucidated its involvement in etherification reaction with Card-TH2 ( Figure 1a).…”

Section: Characterization Of Card-th2 and Cardt-tpamentioning

confidence: 97%

Section: Characterization Of Card-th2 and Cardt-tpamentioning

confidence: 99%

Multi-Functional Cardanol Triazine Schiff Base Polyimine Additives for Self-Healing and Super-Hydrophobic Epoxy of Steel Coating

et al. 2020

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The designing of multifunctional materials in system-level efficiency is one of the main targets and a hot topic for the application of novel green or bio-based materials and structures. In this work, the chemical structure of bio-based cardanol that was derived from cashew oil was modified through a reaction with a bishydrazino-s-triazine derivative followed by condensation polymerization or reaction with terephthaldehyde to obtain a Schiff base polymer. The chemical structures of the modified cardanol-bishydrazino-s-triazine-based monomer and the Schiff base polymer were confirmed from FTIR and NMR spectroscopy analyses. The modified cardanol bishydrazino-s-triazine monomer and polymer were added with different weight ratios during the curing of the epoxy/polyamine hardener to improve the thermal, mechanical, and anti-corrosion characteristics of the epoxy coating of a steel substrate. The data elucidated that the presence of a cardanol bishydrazino-s-triazine monomer and polymer improves the thermal, mechanical, adhesion, and anti-corrosion characteristics of epoxy coatings after exposure for more than 1500 h. The presence of a cardanol- bishydrazino-s-triazine polymer more than 3 wt.% during the curing of epoxy networks produces superhydrophobic and self-healing epoxy coatings. The modification of the epoxy coating with the cardanol bishydrazino-s-triazine polymer improves the seawater contact angle by more than 150° and the adhesion strength of the epoxy coating with the steel surface.

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“…40 Among those polymer substrates, epoxy resins are regarded as highly effective coatings, attributed to their high adhesion bond strength to steel substrates, good barrier property, low cost, and high strength. [41][42][43] The barrier properties of the coating could be further improved by the presence of pigments, such as chromate and lead oxides. 44 However, chromate and lead oxides are not only considered as serious pollutants but also easily agglomerate, causing defects in coating and loss of its anticorrosive function.…”

Section: Introductionmentioning

confidence: 99%

Preparation of 2D leaf‐shaped and 3D flower‐shaped sandwich‐like polyaniline nanocomposites and application on anticorrosion

Kang

Wang

Chen

2020

J of Applied Polymer Sci

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The synthesis of triple-layer-structured polyaniline (PANI) conductive nanocomposites, including two-dimensional leaf-shaped and three-dimensional flower-shaped types (S-PANI), via a two-step method is proposed in this study. According to scanning electron microscopic measurement, the triplelayer-structured S-PANI consists of a middle layer of nonconductive PANI (N-PANI) at 100 nm thickness and emeraldine-salt-form PANI (ES-PANI) nanolayer at 40-50 nm thickness. The results of Fourier-transform infrared spectroscopy, UV/Vis spectroscopy, and X-ray diffraction pattern demonstrate that the phenazine unit existed within the N-PANI main chain, leading to the poor conductivity of N-PANI. However, the conductivity of the N-PANI can be extremely enhanced by at least nine orders of magnitudes (<10 −9-10 0 S/cm) when a conductive ES-PANI nanolayer is further grown on the N-PANI outer surface. Finally, the results of oxygen transmission test and electrochemical impedance spectroscopy reveal that the leaf-shaped S-PANI, as an additive in epoxy resin, has the best oxygen barrier property (oxygen transmission rate = 5.86 cm 3 m −2 day −1) and highest coating resistance (5.53 × 10 10 Ω) after 60-day immersion in 0.1 M HCl solution, indicating that the leaf-shaped S-PANI is an excellent anticorrosion additive.

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Preparation of green cardanol-based epoxy and hardener as primer coatings for petroleum and gas steel in marine environment

Cited by 79 publications

References 49 publications

A Review of Recent Research on Bio-Based Epoxy Systems for Engineering Applications and Potentialities in the Aviation Sector

A Review of Recent Research on Bio-Based Epoxy Systems for Engineering Applications and Potentialities in the Aviation Sector

Multi-Functional Cardanol Triazine Schiff Base Polyimine Additives for Self-Healing and Super-Hydrophobic Epoxy of Steel Coating

Preparation of 2D leaf‐shaped and 3D flower‐shaped sandwich‐like polyaniline nanocomposites and application on anticorrosion

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