Effects of platinum compounds/superfine aluminum hydroxide/ultrafine calcium carbonate on the flame retardation and smoke suppression of silicone foams

Deng, Jun; Kang, Furu; Shu, Chi‐Min; Wang, Weifeng; Laiwang, Bin; Liu, Zhi‐Chao

doi:10.1002/app.47679

Cited by 19 publications

(7 citation statements)

References 29 publications

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“…The boiling point of the three additives (DMF at 193 • C, EHB at 297 • C, PHB at 133 • C) were lower than the 300 • C. As investigated before by TGA, the decomposition of the cellulose chains in the cotton samples mainly happened at temperature above 300 • C. It is deduced that the additives have already evaporated to flammable gas when the cotton is about to burn, making it burn more quickly and thoroughly thus reaching a higher pHRR. Different from the other three additives in this work, calcium sorbate is stable under temperature below 400 • C and one of its pyrolysis product-calcium carbonate can be used as a fire retardant filler [35,36]. The pHRR (88.5 kW/m 2 ) and THR (15.6 MJ/m 2 ) of cotton/CS were lower than that of pure cotton samples.…”

Section: Thermal Stability and Combustion Propertiesmentioning

confidence: 77%

Comprehensive Property Investigation of Mold Inhibitor Treated Raw Cotton and Ramie Fabric

et al. 2020

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At present, research rarely focuses on side effects of the use of mold inhibitors on raw cotton and ramie fabric. Four different mold inhibitors (dimethyl fumarate (DMF), ethyl p-hydroxybenzoate (EHB), propyl p-hydroxybenzoate (PHB), and calcium sorbate (CS)) were used to treat raw cotton and ramie fabric through a dipping method. The optical properties, wettability, thermal conductivity, thermal stability, and combustion properties of treated cotton and ramie samples have been investigated. The reflectance of UV light was improved by the addition of mold inhibitors. In addition, the presence of EHB, PHB, and CS improved the wettability of raw cotton and ramie fabric. It was found that thermal conductivity was slightly increased, influencing the heat insulation effect of the fabrics. Since the additives are flammable, the presence of DMF, EHB, and PHB caused an increase in pHRR and THR for combustion of cotton samples. This addition of CS caused a decrease in pHRR and THR of cotton due to the flame retardancy of CS. This comprehensive investigation of the properties of raw cotton and ramie fabrics treated with these materials should provide a basis for the choice of mold inhibitors.

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Section: Thermal Stability and Combustion Propertiesmentioning

confidence: 77%

Comprehensive Property Investigation of Mold Inhibitor Treated Raw Cotton and Ramie Fabric

et al. 2020

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“…On the contrary, after CPF‐6 was ignited, the flame propagation was very slow, and the foam remained intact after the test (see Figure 5c). This was mainly attributed to the good blocking effect of the mica/SGF‐armored skeleton in the foam framework and the pore wall, hindering the rapid propagation of the flame and exchange between the substance and the external environment 31–34 …”

Section: Resultsmentioning

confidence: 99%

“…This was mainly attributed to the good blocking effect of the mica/SGF-armored skeleton in the foam framework and the pore wall, hindering the rapid propagation of the flame and exchange between the substance and the external environment. [31][32][33][34] High temperature structural stability is also an important basis for evaluating the thermal protection performance of the PDMS composite foam. Figure 6 shows the microstructures of CPF-6 after the fire exposure at different temperatures (600-900 C) in the muffle furnace.…”

Section: Flame Retardant and Ceramifiable Propertiesmentioning

confidence: 99%

“Mica/silicate glass frit‐armored skeleton” in PDMS composite foam for improving fire‐proofing performance

Zhao

Fang

et al. 2023

J of Applied Polymer Sci

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It remains challenging to give polydimethylsiloxane (PDMS) foam high fire-proofing performance through scalable strategies and economical methods. Herein, a novel PDMS composite foam with good flame retardancy and simultaneously excellent thermal insulation performance and fire-proofing properties under prolonged flame attack was developed through constructing "mica/silicate glass frit (SGF)-armored skeleton" by one pot method. The prepared composite foams can resist above 1000 C flame without disintegration and still maintain excellent thermal insulation properties due to the formation of porous ceramic framework. The tensile strength and compressive strength at strain of 25% were also increased significantly by 265% and 221%, respectively. This strategy of constructing an inorganic filler-armored skeleton structure in PDMS composite foam opens up new prospects to fabricate fire-proofing PDMS composite foam with impressive high temperature resistance and good mechanical properties.

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“…Mechanical properties are vital factors that affect the performance of SiFs . To investigate the effects of MAHP and zinc borate on the mechanical properties of the SiFs, the tensile strength and elongation at break of SiFs are shown in Figure .…”

Section: Resultsmentioning

confidence: 99%

“…Verdejo et al synthesized flame‐retarded SiFs with carbon nanotubes, and the LOI increased as a function of carbon nanotube content, attaining the self‐extinguishing grade even at low mass fraction of the carbon nanotubes (0.5 wt%). Deng et al utilized platinum (Pt) compounds, superfine aluminum hydroxide (ATH), and ultrafine calcium carbonate (CC) as a flame‐retardant system for SiFs and deduced that the SiF with 0.6‐wt% Pt compounds, 15.0‐wt% ATH, and 15.0‐wt% CC exhibited the optimal comprehensive properties for smoke suppression, flame retardance, mechanical performance, and thermal stability. Kang et al found that with the same density, the LOI of SiFs could increase by 27.4% after adding 30‐wt% super fine talc powder and 1‐wt% hollow glass beads.…”

Section: Introductionmentioning

confidence: 99%

Flame retardancy and smoke suppression of silicone foams with microcapsulated aluminum hypophosphite and zinc borate

Kang

Wang

Deng

et al. 2020

Polymers for Advanced Techs

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The flame‐retardant microcapsules were successfully fabricated with an aluminum hypophosphite (AHP) core. Fourier transform infrared (FTIR) and X‐ray photoelectron spectroscopy (XPS) were used to verify that AHP was encapsulated in the microcapsules, and thermogravimetry analysis showed that microencapsulated AHP (MAHP) possessed higher thermal stability than that of AHP. Then, a flame‐retardant and smoke suppression system for silicone foams (SiFs) was obtained through a synergistic effect of MAHP and zinc borate (2ZnO·3B2O3·3.5H2O). The mechanical properties, flame retardance, and smoke suppression of SiFs with MAHP and zinc borate were tested using the tensile test, limiting oxygen index (LOI) test, UL‐94 test, and cone calorimeter test. The mechanical properties indicated that the tensile strength and elongation at break of SiFs could evidently improve with the incorporation of MAHP. Compared with pure SiF, SiF8 with 4.5‐wt% MAHP and 1.5‐wt% zinc borate could achieve an LOI value of 30.7 vol% and an UL‐94 V‐0 rating, the time to ignition amplified almost six times, the peak heat release rate and total heat release were 51.10% and 46.00% less than that of pure SiF, respectively, the fire performance index increased nearly 13 times, and the fire growth index value was only 13.18% of pure SiF. Moreover, the partial substitution of zinc borate imparted a substantial improvement in both flame retardancy and smoke suppression. Especially, the peak smoke production rate and total smoke production of SiF8 were merely 38.46% and 38.84% of pure SiF.

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Effects of platinum compounds/superfine aluminum hydroxide/ultrafine calcium carbonate on the flame retardation and smoke suppression of silicone foams

Cited by 19 publications

References 29 publications

Comprehensive Property Investigation of Mold Inhibitor Treated Raw Cotton and Ramie Fabric

Comprehensive Property Investigation of Mold Inhibitor Treated Raw Cotton and Ramie Fabric

“Mica/silicate glass frit‐armored skeleton” in PDMS composite foam for improving fire‐proofing performance

Flame retardancy and smoke suppression of silicone foams with microcapsulated aluminum hypophosphite and zinc borate

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