Incorporation of Modified Nano Montmorillonite (MMT) in Polyurethane Coatings Based on Acrylic Copolymer and Trimer of Isophorone Diisocyanate

Gite, Vikas V.; Chaudhari, Ashok B.

doi:10.4028/www.scientific.net/msf.757.99

Cited by 4 publications

(4 citation statements)

References 14 publications

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“…Among the layered silicates, montmorillonite (MMT) was one of the most widely utilized to fabricate clay-polymer nanocomposite, because of the high aspect ratio and high expansion capacity. [9][10][11] Previous studies showed that nanocomposites were improved on the crystallization, mechanical properties, and thermal stability by adding MMT. [12][13][14] Perrine et al [13] analyzed the structure and properties of PHB/MMT nanocomposites and found that an optimum MMT content of 1 wt% can improve elongation at break while maintaining a high stiffness.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical, thermal, and barrier properties of poly (3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate)/montmorillonite nanocomposites using silane coupling agent

Dong

Zhou

et al. 2020

Polymer Composites

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A nanocomposite of poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH)/ montmorillonite (MMT) modified with silane coupling agent 3-aminopropyltriethoxysilane (KH550) (PHBH/MMT/KH550) was prepared by solution casting method. The effects of KH550 content on properties of nanocomposites were comparatively investigated. According to the Fourier transform infrared spectra, the new chemical bonding between the PHBH and the MMT was formed by adding KH550. The crystallinity, thermal properties, mechanical properties, and barrier properties of the nanocomposites were improved because of the good dispersion of MMT. Compared with pure PHBH, a 220.05%, 158.25%, and 58.91% improvement in young's modulus, tensile strength, and elongation at break was obtained. The water vapor transmission coefficient was decreased by 113.30%. Moreover, it was notable that the nanocomposite possessed the optimal mechanical properties when the KH550 content was 5 wt%.The obtained results revealed that the nanocomposite will expand the practical application of PHBH base plastics as a substitute of traditional petrochemical materials.

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Section: Introductionmentioning

confidence: 99%

Enhanced mechanical, thermal, and barrier properties of poly (3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate)/montmorillonite nanocomposites using silane coupling agent

Dong

Zhou

et al. 2020

Polymer Composites

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“…Based on the nature of the ionization of hydrophilic groups in water, waterborne polyurethanes are classed as anionic, cationic, and nonionic. Ionic aqueous polyurethanes have been extensively investigated, and the anionic variety is now being produced commercially [ 12 , 13 , 14 , 15 , 16 , 17 ]. Cationic aqueous polyurethanes are typically synthesized by utilizing diols containing tertiary amine groups as chain extenders and quaternizing with alkylating agents or appropriate acids to produce water-soluble ionic groups.…”

Section: Introductionmentioning

confidence: 99%

Aqueous Cationic Fluorinated Polyurethane for Application in Novel UV-Curable Cathodic Electrodeposition Coatings

Chen,

Zeng,

Liu

et al. 2023

Polymers

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Aqueous polyurethane is an environmentally friendly, low-cost, high-performance resin with good abrasion resistance and strong adhesion. Cationic aqueous polyurethane is limited in cathodic electrophoretic coatings due to its complicated preparation process and its poor stability and single performance after emulsification and dispersion. The introduction of perfluoropolyether alcohol (PFPE-OH) and light curing technology can effectively improve the stability of aqueous polyurethane emulsions, and thus enhance the functionality of coating films. In this paper, a new UV-curable fluorinated polyurethane-based cathodic electrophoretic coating was prepared using cationic polyurethane as a precursor, introducing PFPE-OH capping, and grafting hydroxyethyl methacrylate (HEMA). The results showed that the presence of perfluoropolyether alcohol in the structure affected the variation of the moisture content of the paint film after flash evaporation. Based on the emulsion particle size and morphology tests, it can be assumed that the fluorinated cationic polyurethane emulsion is a core–shell structure with hydrophobic ends encapsulated in the polymer and hydrophilic ends on the outer surface. After abrasion testing and baking, the fluorine atoms of the coating were found to increase from 8.89% to 27.34%. The static contact angle of the coating to water was 104.6 ± 3°, and the water droplets rolled off without traces, indicating that the coating is hydrophobic. The coating has excellent thermal stability and tensile properties. The coating also passed the tests of impact resistance, flexibility, adhesion, and resistance to chemical corrosion in extreme environments. This study provides a new idea for the construction of a new and efficient cathodic electrophoretic coating system, and also provides more areas for the promotion of cationic polyurethane to practical applications.

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“…In polymeric materials, polyurethane (PU) is a group of polymers with versatile and excellent physical, chemical, and mechanical properties, which increased their demand in the field of industrial coatings applications. The rapid research dealing with the development of renewable source based polymeric resins and performance enhancement for chemical resistance and anticorrosive nature in salt solution is in progress by adding metal nanoparticles like ZnO, TiO 2 , Al 2 O 3 , silica, and montmorillonite in PU coating formulations. Microencapsulation of a core has been utilized in various sectors, viz., self-healing coatings, , controlled release of pesticides, and drug delivery. , Presently, technologists have focused on development of a new shell material with better properties over conventional shells for microencapsulation of a self-healing agent.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane Prepared from Neem Oil Polyesteramides for Self-Healing Anticorrosive Coatings

Chaudhari

Tatiya

Hedaoo

et al. 2013

Ind. Eng. Chem. Res.

Self Cite

107

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Polymeric researchers desire strongly to reduce dependency on fossil or petroleum feed stock by utilizing renewable source based polymeric resins in coating. The present research represents the attempt made to develop neem oil (a renewable source) two-pack self-healing anticorrosive polyurethane (PU) coatings cured at room temperature. The oil-based polyesteramide was prepared in two steps; viz., in the first step, oil fatty amide was synthesized, and in the second, it was directly converted to polyesteramide by condensing amide with phthalic anhydride. A spectral study of prepared resin was carried by FT-IR and NMR techniques. Polyesteramide further was utilized for preparation of self-healing PU coatings with incorporation of polyamidoamine based polyurea microcapsules containing natural self-healing agent. The obtained coatings were tested for thermal, physicochemical, and corrosion resistance tests. The coating properties, like gloss, impact resistance, adhesion, and flexibility, were also studied and found to be superior for anticorrosive self-healing industrial coatings.

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Incorporation of Modified Nano Montmorillonite (MMT) in Polyurethane Coatings Based on Acrylic Copolymer and Trimer of Isophorone Diisocyanate

Cited by 4 publications

References 14 publications

Enhanced mechanical, thermal, and barrier properties of poly (3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate)/montmorillonite nanocomposites using silane coupling agent

Enhanced mechanical, thermal, and barrier properties of poly (3‐hydroxybutyrate‐co‐3‐hydroxyhexanoate)/montmorillonite nanocomposites using silane coupling agent

Aqueous Cationic Fluorinated Polyurethane for Application in Novel UV-Curable Cathodic Electrodeposition Coatings

Polyurethane Prepared from Neem Oil Polyesteramides for Self-Healing Anticorrosive Coatings

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