Novel hybrid zirconium-silicone resin as high-temperature adhesive and an insight into the thermal resistance mechanism

Jiang, Jing; Yuan, Xianglin; Xue, Kangle; Liu, Ming; Huang, Yudong; Liu, Li

doi:10.1016/j.cej.2022.137350

Cited by 15 publications

(3 citation statements)

References 45 publications

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“…The second endothermic peak in the DSC curve corresponds to this process, and the peak temperature is indicated by T 2 in Table 6. The third stage of weight loss occurs from 450 • C to 600 • C. This stage of weight loss is caused by the ring-forming deconvolution of the siloxane units [37]. The heat exothermic peak in the DSC curve corresponds to this process, and the peak temperature is represented by T 3 in Table 6.…”

Section: Thermal Properties Of Coatingsmentioning

confidence: 99%

The Effect of Different Diluents and Curing Agents on the Performance of Epoxy Resin-Based Intumescent Flame-Retardant Coatings

Yang,

Wan,

Yang

et al. 2024

Materials

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The epoxy resin-based (ESB) intumescent flame-retardant coatings were modified with 1,4-butanediol diglycidyl ether (14BDDE) and butyl glycidyl ether (BGE) as diluents and T403 and 4,4′-diaminodiphenylmethane (DDM) as curing agents, respectively. The effects of different diluents and curing agents on the flame-retardant and mechanical properties, as well as the composition evolution of the coatings, were investigated by using large-plate combustion, the limiting oxygen index (LOI), vertical combustion, a cone calorimeter, X-ray diffraction, FTIR analysis, a N2 adsorption and desorption test, a scanning electron microscope (SEM), a tensile strength test, and a viscosity test. The results showed that the addition of 14BBDE and T403 promoted the oxidation of B4C and the formation of boron-containing glass or ceramics, increased the residual mass of char, densified the surface char layer, and increased the specific surface area of porous residual char. When their dosage was 30%, ESB-1T-3 coating exhibited the most excellent flame-retardant properties. During the 2 h large-plate combustion test, the backside temperature was only 138.72 °C, without any melting pits. In addition, the peak heat release rate (PHRR), total heat release rate (THR), total smoke production (TSP), and peak smoke production (PSPR) were reduced by 13.15%, 13.9%, 5.48%, and 17.45%, respectively, compared to the blank ESB coating. The LOI value reached 33.4%, and the vertical combustion grade was V-0. In addition, the tensile strength of the ESB-1T-3 sample was increased by 10.94% compared to ESB. In contrast, the addition of BGE and DDM promoted the combustion of the coating, affected the ceramic process of the coating, seriously affected the formation of borosilicate glass, and exhibited poor flame retardancy. The backside temperature reached 190.93 °C after 2 h combustion. A unified rule is that as the amount of diluent and curing agent increases, the flame retardancy improves while the mechanical properties decrease. This work provides data support for the preparation and process optimization of resin-based coatings.

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Section: Thermal Properties Of Coatingsmentioning

confidence: 99%

The Effect of Different Diluents and Curing Agents on the Performance of Epoxy Resin-Based Intumescent Flame-Retardant Coatings

Yang,

Wan,

Yang

et al. 2024

Materials

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“…To resolve this problem, researchers tried to introduce nonmetallic elements into PR through chemical bonding. − Silicone has a large amount of Si–O–Si with high bonding energy . Also, it is an excellent ceramic precursor that can cleave into SiO 2 and SiC at high temperatures. , These give it unparalleled advantages in thermal stability and flame retardancy. , Hence, silicone-modified PR has attracted increasing interest.…”

Section: Introductionmentioning

confidence: 99%

“…12−16 Silicone has a large amount of Si−O−Si with high bonding energy. 17 Also, it is an excellent ceramic precursor that can cleave into SiO 2 and SiC at high temperatures. 18,19 These give it unparalleled advantages in thermal stability 20 and flame retardancy.…”

Section: Introductionmentioning

confidence: 99%

Nano Co-Continuous Structure Poly(imide-siloxane)/Phenolic Hybrid Resin Fabricated by Copolymerization for the Thermal Protection System

Yuan,

Wang,

Huang

et al. 2023

Ind. Eng. Chem. Res.

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Organic–inorganic hybridization is an important way to improve the ablation resistance of phenolic resin (PR). However, it is difficult to form a continuous inorganic liquid film on the resin surface during ablation, thus limiting the further improvement of ablation performance. In this work, a new poly(imide-siloxane) (PIS) was designed by introducing imide rings and terminal ethoxy groups into the main chain of silicone, and then it was introduced into PR. The imide rings can increase the polarity of the chain, and the terminal ethoxy groups can react with hydroxyl groups in PR, which can improve the compatibility of PIS with PR. SEM and AFM showed that nano co-continuous and sea-island structures of hybrid resins were prepared, respectively. Then, the influence of different structures on thermal stability and ablation-resistant properties was investigated by using TGA, tube furnace heat treatment, and oxyacetylene ablation test. Compared to the sea-island structure, the nano co-continuous structure of resin can form a continuous and dense SiO2 film in situ, giving the resin superior thermal stability and ablation-resistant properties. The present work provides an available way to manipulate hybrid resin’s phase structure and develop high-performance ablation-resistant resin in aerospace applications.

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A Spectroscopic Correlative Analysis of Eu³⁺‐Substituted Zn_1‐_xSnO₃ Nano Phosphors for Anticounterfeiting Applications

Albert,

Velladurai

2024

Part & Part Syst Charact

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A series of orange–red phosphors Zn1‐xSnO3:xEu3+ synthesized using a sol–gel combustion process is used to study the modified local crystal structure by site‐selective substitution of Eu3+ ions. XRD with the Rietveld refinement analysis reveals an orthorhombic ZnSnO3 structure with a space group 61. SEM and TEM with EDAX analyses confirm the flower‐like morphology of Zn1‐xSnO3:xEu3+ nanorods. Photoluminescence (PL) spectroscopy gives substantial confirmation for the inclusion of Eu3+ ions into the ZnSnO3 host. Judd‐Ofelt analysis confirms the substitution of Eu3+ ion in an asymmetric environment in ZnSnO3, which is responsible for orange–red emission at 615 nm. UV–vis–DRS analysis shows that the addition of Eu3+ ions (1% to 17% in phases of 4%) results in the formation of confined energy states with an increased band gap from 2.78 to 3.29 eV. The ability of ZnSnO3 to host Eu3+ ions signifies that it can be used as an effective luminescent material. Cyclic voltammetry analysis reveals the enhanced charge separation in Zn1‐xSnO3:xEu3+(13%) nanophosphor. The optimized Zn1‐xSnO3:xEu3+(13%) nano phosphor mixed with silicone investigated for the generation of anti‐counterfeiting patterns indicates its potential to generate high‐resolution image patterns on various surfaces under monochromatic UV or visible‐LASER LED illumination.

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Novel hybrid zirconium-silicone resin as high-temperature adhesive and an insight into the thermal resistance mechanism

Cited by 15 publications

References 45 publications

The Effect of Different Diluents and Curing Agents on the Performance of Epoxy Resin-Based Intumescent Flame-Retardant Coatings

The Effect of Different Diluents and Curing Agents on the Performance of Epoxy Resin-Based Intumescent Flame-Retardant Coatings

Nano Co-Continuous Structure Poly(imide-siloxane)/Phenolic Hybrid Resin Fabricated by Copolymerization for the Thermal Protection System

A Spectroscopic Correlative Analysis of Eu³⁺‐Substituted Zn_1‐_xSnO₃ Nano Phosphors for Anticounterfeiting Applications

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Novel hybrid zirconium-silicone resin as high-temperature adhesive and an insight into the thermal resistance mechanism

Cited by 15 publications

References 45 publications

The Effect of Different Diluents and Curing Agents on the Performance of Epoxy Resin-Based Intumescent Flame-Retardant Coatings

The Effect of Different Diluents and Curing Agents on the Performance of Epoxy Resin-Based Intumescent Flame-Retardant Coatings

Nano Co-Continuous Structure Poly(imide-siloxane)/Phenolic Hybrid Resin Fabricated by Copolymerization for the Thermal Protection System

A Spectroscopic Correlative Analysis of Eu3+‐Substituted Zn1‐xSnO3 Nano Phosphors for Anticounterfeiting Applications

Contact Info

Product

Resources

About

A Spectroscopic Correlative Analysis of Eu³⁺‐Substituted Zn_1‐_xSnO₃ Nano Phosphors for Anticounterfeiting Applications