Sustainable cardanol-based multifunctional carboxyl curing agents for epoxy coatings: Si–S synergism

Wazarkar, Kunal; Sabnis, Anagha

doi:10.1007/s11998-020-00341-4

Cited by 6 publications

(2 citation statements)

References 41 publications

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“…As shown in Figure 16, two kinds of silicon-sulfur multi-functional carboxyl curing agents (S-I and S-II) were synthesized from cashew phenol as raw materials by mercaptoene coupling method and applied to EP [119]. The curing agent is mixed with conventional epoxy resin instead of a traditional curing agent and coated on the steel plate to form a coating.…”

Section: Epoxy Fireproof Coatingmentioning

confidence: 99%

New Progress in the Application of Flame-Retardant Modified Epoxy Resins and Fire-Retardant Coatings

Sun,

Yu,

et al. 2023

Coatings

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Due to the enhancement of people’s environmental awareness, flame-retardant epoxy resin (EP) tends to be non-toxic, efficient, and multi-functional, and its development is systematic. At present, many new flame retardants or intrinsic modification methods reported in studies can effectively improve the flame retardability and thermal stability of EP. However, many aspects still need to be further improved. In this review, the flame-retardant mechanism and method of flame-retardant epoxy resins are briefly analyzed. The research progress of the flame-retardant modification of epoxy resin by physical addition and chemical reaction is summarized and discussed. Furthermore, the research trend of flame-retardant epoxy resin in the field of fire-protective coatings is discussed, and future problems in this field are put forward. This work may provide some new insights for the design of multi-functional integrated epoxy resin fireproof coatings.

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Section: Epoxy Fireproof Coatingmentioning

confidence: 99%

New Progress in the Application of Flame-Retardant Modified Epoxy Resins and Fire-Retardant Coatings

Sun,

Yu,

et al. 2023

Coatings

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“…CNSL is a naturally derived compound mainly consisting of cardanol, cardol, anacardic acid, and traces of methyl cardol. 17,18,[28][29][30] The EPN cured with CNSL provided the major ether and minor ester linkages in the network. The transesterification was observed at 150 C for EPN cured with 30% CNSL.…”

Section: Introductionmentioning

confidence: 99%

Carbon fiber/epoxy vitrimer composite patch cured with bio‐based curing agents for one‐step repair metallic sheet and its recyclability

Lorwanishpaisarn

Kasemsiri

Srikhao

et al. 2021

J of Applied Polymer Sci

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Vitrimers have gained a great deal of attention from researchers, yet research on its application is still lacking. This study, a novel bio-based vitrimer was developed from epoxy (EP) and bio-based curing agents, that is, cashew nut shell liquid (CNSL) and citric acid (CA), and then reinforced by carbon fiber.The vitrimers with different ratios of acid to epoxy (R ratio) at 0.30-0.40 contained ester and ether linkages. All EP/CA/CNSL vitrimers showed the stress relaxation over 70-100 C due to transesterification. The vitrimers were applied as polymer matrices for the carbon fiber composites and then used as repair patches. By using the carbon fiber-reinforced vitrimer with the R ratio of 0.30, patch repair on a damaged alloy sheet revealed that approximately 98% of the tensile strength of the damaged alloy sheet was recovered. The vitrimer can be dissolved from carbon fiber composite to recover carbon fiber. The recovered carbon fiber retained good tensile strength compared to the pristine composite.Based on this study, the EP/CA/CNSL vitrimers showed the comparable thermomechanical properties with the epoxy vitrimer cured by the petroleumbased curing agent. The vitrimer composite patch could therefore be an alternative new repair method to extend the service life of damaged structures.

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The epoxy resin system: function and role of curing agents

Aziz,

Haq,

Farid

et al. 2023

Carbon Lett.

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Sustainable cardanol-based multifunctional carboxyl curing agents for epoxy coatings: Si–S synergism

Cited by 6 publications

References 41 publications

New Progress in the Application of Flame-Retardant Modified Epoxy Resins and Fire-Retardant Coatings

New Progress in the Application of Flame-Retardant Modified Epoxy Resins and Fire-Retardant Coatings

Carbon fiber/epoxy vitrimer composite patch cured with bio‐based curing agents for one‐step repair metallic sheet and its recyclability

The epoxy resin system: function and role of curing agents

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