Designing superhydrophobic and flame retardant photo-cured hybrid coatings

Beyler‐Çiğil, Aslı

doi:10.1016/j.porgcoat.2020.105850

Cited by 12 publications

(3 citation statements)

References 57 publications

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“…45 The second stage at 120-180 C is mainly ascribed to the evaporation of residual solvents and volatile organic compounds. 46,47 For coatings lled with vermiculite, the exclusion of interlayer water from vermiculite are also contributed to the total mass loss of 5.39-8.09 wt% at this stage. 48 The third stage at 180-550 C is ascribed to the thermal pyrolysis of re retardants, amino resin and organic hydrophobic layer on the surface of ANE.…”

Section: Fire Retardancy Propertymentioning

confidence: 99%

Synergistic effect of aluminum diethylphosphinate/sodium stearate modified vermiculite on flame retardant and smoke suppression properties of amino coatings

Wang

Wen

et al. 2021

RSC Adv.

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Section: Fire Retardancy Propertymentioning

confidence: 99%

Synergistic effect of aluminum diethylphosphinate/sodium stearate modified vermiculite on flame retardant and smoke suppression properties of amino coatings

Wang

Wen

et al. 2021

RSC Adv.

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“…Phenyl dichlorophosphate, which features a phosphorus atom and a benzene ring, exhibits elevated thermal stability and is capable of engaging in reactions with monomers containing hydroxyl functionalities, , enabling the synthesis of phosphorus-containing flame-retardant monomers that confer exceptional flame-retardant characteristics upon polymers. − During the thermal degradation process, silicon carbide functions to protect the polymer residue from further decomposition at elevated temperatures. This protection arises from the presence of reaction products of silicon that persist on the surface of the char, ultimately leading to the formation of a protective silica layer.…”

Section: Introductionmentioning

confidence: 99%

Comparative Study of Bis-Schiff Case Containing Conjugated Oligomers Based on Phosphate and Silane Moieties: Investigation of Photophysical and Thermal Properties

Kolcu,

Çulhaoğlu,

Kaya

2024

ACS Omega

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Oligo(azomethine)s bearing phosphate and silane moieties were the subject of an investigation within this study. The initial stage involved the synthesis of two Schiff base monomers, denoted as SCH-1 and SCH-2 (SCHs), each possessing a pair of hydroxyl functional groups. This was achieved through a loss of water between the aldehyde and diamine precursors. Subsequently, the Schiff base entities were subjected to oligomerization through HCl-mediated elimination due to the interaction between the hydroxyl groups of the Schiff bases and the chlorine moieties of dichlorodiethylsilane (Si) or phenyl dichlorophosphate (P). This procedure yielded distinct P-oligo(azomethine) (P1−P, P2−P) and Si-oligo(azomethine) (P1−Si and P2−Si) structures corresponding to each precursor. The molecular structures of the synthesized Schiff base monomers and oligo(azomethine)s were elucidated employing Fourier transform infrared, 1 H NMR, and 13 C NMR techniques. Thermal properties of the resulting products were assessed by utilizing thermogravimetric analysis (TG-DTG/ DTA and DSC) techniques. Scanning electron microscopy (SEM) was employed to acquire high-resolution images and detailed surface information on the samples. Additionally, X-ray diffraction was employed to analyze the phase properties of the solid samples. Furthermore, the optical band gap (E g ) values of the resulting P-oligo(azomethine)s and Si-oligo(azomethine)s were determined utilizing UV−vis spectrophotometer. The relatively low band gap values exhibited by the synthesized oligo(azomethine)s were indicative of their potential suitability as semiconductive materials in the realm of electronic and optoelectronic device fabrication. Photoluminescence (PL) measurements disclosed a green emission profile upon excitation by blue light. The oligo(azomethine)s incorporating methoxy groups demonstrated a red shift in comparison to their counterparts with methyl groups. Remarkably, no discernible fluctuations in fluorescence were observed over a 3600 s interval under consistent conditions. This observation underscored the inherent stability of the PL emission across the spectral range of exciting light. Thermal analyses unveiled high thermal stability of the synthesized oligo(azomethine)s, sustaining their structural integrity up to 220 °C. The char % of P-oligo(azomethine)s and Si-oligo(azomethine)s were observed to fall within the range of 29.45−55.47% at 1000 °C. SEM images revealed the absence of pores on the surface of P2−Si, which exhibited the highest limiting oxygen index and thermal heat release index (T HRI ) values.

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“…Photo‐curing technology has attracted increasing attention both in academic and in industry 1,2 due to the green technology with “5E” characteristics such as economical, efficient, energy saving, environment friendly and enabling. Currently, the technology is widely used in coatings, 3–7 adhesives, 8 3D printing 9–13 and dental materials, 14 etc. However, in the presence of oxygen, the monomer radical or polymeric radical was trapped by oxygen molecular forming lower active peroxyl radical, resulted in lower polymerization rate.…”

Section: Introductionmentioning

confidence: 99%

Preparation and UV‐curing properties of oxazolidine‐2‐one based acrylates

Liu

Mei

Zhou

et al. 2022

Polymers for Advanced Techs

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Three oxazolidine-2-one based acrylates monomers were synthesized by the reaction of oxazolidine-2-one with 1,6-hexanediol diacrylate (HDDA), neopentyl glycol diacrylate (NPGDA) and trimethylolpropane triacrylate (TMPTA). The molecular structures of the products were characterized by FT-IR, 1 H NMR and electrospray ionization high resolution mass spectrometry (ESI-HRMS). The photo-polymerization kinetics of the synthesized oxazolidine-2-one based acrylates were investigated by real-time infrared spectroscopy. The results showed that the oxazolidine-2-one based acrylates with 1 wt% 2-isopropylthioxanthone (ITX) could be cured to form a transparent film under UV irradiation. The UV curing speed of oxazolidine-2-one based acrylates with 1 wt% ITX was better than that of TMPTA with 1 wt% ITX and 3 wt% ethyl 4-(dimethylamino) benzoate (EDB) as co-initiator. Based on the HRMS analysis of oligomers extracted from the UV-cured film, the plausible photopolymerization mechanism was proposed. The synthesized monomer formula with CN996 resin can be 3D printed forming various models with smooth surface, good accuracy, excellent thermal stability and 99.4% gel content.

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Designing superhydrophobic and flame retardant photo-cured hybrid coatings

Cited by 12 publications

References 57 publications

Synergistic effect of aluminum diethylphosphinate/sodium stearate modified vermiculite on flame retardant and smoke suppression properties of amino coatings

Synergistic effect of aluminum diethylphosphinate/sodium stearate modified vermiculite on flame retardant and smoke suppression properties of amino coatings

Comparative Study of Bis-Schiff Case Containing Conjugated Oligomers Based on Phosphate and Silane Moieties: Investigation of Photophysical and Thermal Properties

Preparation and UV‐curing properties of oxazolidine‐2‐one based acrylates

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