Influence of Epoxy Content on the Properties and Marine Bacterial Adhesion of Epoxy Modified Silicone Coatings

Zhao, Ruikang; Zhang, Zhanping; Qi, Yuhong

doi:10.3390/coatings10020126

Cited by 15 publications

(10 citation statements)

References 23 publications

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“…Thus, epoxy-silicone material can be well designed to have an adaptable cross-link density to balance the rigidity of the epoxy resin and the elasticity of the silicone material. The balance of epoxy resin and siloxane is the key factor for a suitable coating in terms of adhesion, hydrophobic characteristics, and mechanical resistance and toughness [ 2 , 49 ]. Finally, the addition of proper fillers (such as graphene, ZnO, etc.)…”

Section: Epoxy Based Coatingsmentioning

confidence: 99%

“…Therefore, the addition of DGEBA increases the crosslinking density of the material, visibly improving both the mechanical properties and the chemical compatibility, and therefore the adhesion of the coating towards the composite laminate. R. Zhao et al [ 49 ] designed a modified three-component epoxy silicone resin with the aim to improve the mechanical performance and the adhesion of the silicone antifouling coatings. The results show that the presence of epoxy resin improves the adhesion of the coating up to level 1, while the free energy of the coating surface is between 15 mJ/m 2 and 21 mJ/m 2 .…”

Section: Epoxy Based Coatingsmentioning

confidence: 99%

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Mechanical Properties of Protective Coatings against Marine Fouling: A Review

2021

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The accumulation of marine organisms on ship hulls, such as microorganisms, barnacles, and seaweeds, represents a global problem for maritime industries, with both economic and environmental costs. The use of biocide-containing paints poses a serious threat to marine ecosystems, affecting both target and non-target organisms driving science and technology towards non-biocidal solutions based on physico-chemical and materials properties of coatings. The review reports recent development of hydrophobic protective coatings in terms of mechanical properties, correlated with the wet ability features. The attention is focused mainly on coatings based on siloxane and epoxy resin due to the wide application fields of such systems in the marine industry. Polyurethane and other systems have been considered as well. These coatings for anti-fouling applications needs to be both long-term mechanically stable, perfectly adherent with the metallic/composite substrate, and capable to detach/destroy the fouling organism. Prospects should focus on developing even “greener” antifouling coatings solutions. These coatings should also be readily addressable to industrial scale-up for large-scale product distribution, possibly at a reasonable cost.

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Section: Epoxy Based Coatingsmentioning

confidence: 99%

Section: Epoxy Based Coatingsmentioning

confidence: 99%

Mechanical Properties of Protective Coatings against Marine Fouling: A Review

2021

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“…Modification by physical blending cannot meet the needs of most actual applications. Chemical modification involves the use of end-functionalized polysiloxanes for copolymerization with organic polymers to obtain new polymeric materials [ 27 , 28 , 29 ]. This technique fundamentally improves material compatibility and solves the drawbacks of physical blending [ 30 , 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Polysiloxane-Based Polyurethanes with High Strength and Recyclability

Wang

Bai

Sun

et al. 2022

IJMS

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Polysiloxanes have attracted considerable attention in biomedical engineering, owing to their inherent properties, including good flexibility and biocompatibility. However, their low mechanical strength limits their application scope. In this study, we synthesized a polysiloxane-based polyurethane by chemical copolymerization. A series of thermoplastic polysiloxane-polyurethanes (Si-TPUs) was synthesized using hydroxyl-terminated polydimethylsiloxane containing two carbamate groups at the tail of the polymer chains 4,4′-dicyclohexylmethane diisocyanate (HMDI) and 1,4-butanediol as raw materials. The effects of the hard-segment content and soft-segment number average molecular weight on the properties of the resulting TPUs were investigated. The prepared HMDI-based Si-TPUs exhibited good microphase separation, excellent mechanical properties, and acceptable repeatable processability. The tensile strength of SiTPU-2K-39 reached 21.5 MPa, which is significantly higher than that of other flexible polysiloxane materials. Moreover, the tensile strength and breaking elongation of SiTPU-2K-39 were maintained at 80.9% and 94.6%, respectively, after three cycles of regeneration. The Si-TPUs prepared in this work may potentially be used in gas separation, medical materials, antifouling coatings, and other applications.

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“…At present, researchers have made many experiments to improve the mechanical properties of the silicone coatings. Common modified methods are modified to PDMS materials and the reinforcement of powder [ 11 , 12 , 13 , 14 , 15 ]. Modified PDMS materials are based on PDMS, and other resins provide high mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

“…Modified PDMS materials are based on PDMS, and other resins provide high mechanical properties. Zhao modified PDMS with γ-aminopropyltriethoxysilane and epoxy resin as raw materials [ 12 ]. The results show that the introduction of epoxy resin can successfully enhance the mechanical properties of the coatings.…”

Section: Introductionmentioning

confidence: 99%

The Antifouling and Drag-Reduction Performance of Alumina Reinforced Polydimethylsiloxane Coatings Containing Phenylmethylsilicone Oil

Yang

Zhang

et al. 2021

Polymers

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Fouling-release coatings reinforced with micro-alumina and nano-alumina were prepared based on polydimethylsiloxane (PDMS) containing phenylmethylsilicone oil. The surface properties, mechanical properties, leaching behavior of silicone oil, anti-fouling and drag-reduction performance of the coating were studied. The results show that the addition of alumina can significantly improve the tensile strength, elastic modulus and Shore’s hardness of the coating. The adhesion experiments of marine bacteria and Navicula Tenera show that the addition of alumina can reduce the antifouling performance of the coating, which is related to the stripping mode of fouling organisms. The fouling organisms leave the coating surface by shearing, and the energy required for shearing is proportional to the elastic modulus of the coating. At 800–1400 rpm, the addition of alumina will reduce the drag reduction performance of the coating, which is related to the drag reduction mechanism of PDMS. PDMS counteracts part of the resistance by surface deformation. The larger the elastic modulus is, the more difficult the surface deformation is. The experiment of silicone oil leaching shows that the increase of alumina addition amount and the decrease of particle size will inhibit the leaching of silicone oil.

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Influence of Epoxy Content on the Properties and Marine Bacterial Adhesion of Epoxy Modified Silicone Coatings

Cited by 15 publications

References 23 publications

Mechanical Properties of Protective Coatings against Marine Fouling: A Review

Mechanical Properties of Protective Coatings against Marine Fouling: A Review

Polysiloxane-Based Polyurethanes with High Strength and Recyclability

The Antifouling and Drag-Reduction Performance of Alumina Reinforced Polydimethylsiloxane Coatings Containing Phenylmethylsilicone Oil

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