Flame retardancy and toughness modification of flame retardant polycarbonate/acrylonitrile-butadiene-styrene/AHP composites

Wu, Ningjing; Lang, Shuguo

doi:10.1016/j.polymdegradstab.2015.11.007

Cited by 26 publications

(13 citation statements)

References 35 publications

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“…For example, a decrease around 263% was found for 1% OMT +18% FR, even if the time to PHRR goes three times higher. This substantial decrease agrees with the open literature [6,9,10]. If one compares the experimental data with the state of the art, it can be seen that lower PHRR values were obtained also by other research groups (i.e., 1821 kW/m 2 in reference [1], 574 kW/m 2 in [9] and 930 kW/m 2 in ref.…”

Section: Resultssupporting

confidence: 90%

“…This substantial decrease agrees with the open literature [6,9,10]. If one compares the experimental data with the state of the art, it can be seen that lower PHRR values were obtained also by other research groups (i.e., 1821 kW/m 2 in reference [1], 574 kW/m 2 in [9] and 930 kW/m 2 in ref. [6]) and the phenomenon can be explained by the reABS initial combustion process (i.e., from its preparation process).…”

Section: Resultssupporting

confidence: 90%

“…Consequently, improving the fire-retardant behavior of polymers is of critical importance for specialists. Many authors have combined ABS with different fire retardants [1][2][3][4][5][6][7][8][9][10][11][12] as well as different clays in order to enhance the synergy between the components [13]. One of the most used clays is the organic montmorillonite (OMT) [13].…”

Section: Introductionmentioning

confidence: 99%

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Fire Properties of Acrylonitrile Butadiene Styrene Enhanced with Organic Montmorillonite and Exolit Fire Retardant

2019

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In this paper an experimental investigation on fire retardancy of a new polymer nanocomposite derived from organic montmorillonite and exolit fire retardant in an acrylonitrile- butadiene-styrene copolymer by analyzing the flammability and fire behavior is described. The samples were prepared by melting and mixing nanocomposites and fire retardant in different concentrations in an acrylonitrile-butadiene-styrene base polymer. It was found that using only one component (organic montmorillonite or fire retardant) the burning stops in 10 s on the sample. Confirmation of synergy in flammability by combining both montmorillonite and flame retardants was noticed and is discussed regarding the flame-retardant mechanisms assessed by means of the Limiting oxygen index (LOI), UL 94, and cone-calorimeter methods. The acrylonitrile- butadiene-styrene preparation with 15–20 wt% fire retardant and 1–2 wt% organic montmorillonite reached a UL-94 V-0 classification, contrasting with the pure acrylonitrile- butadiene-styrene and the acrylonitrile-butadiene-styrene with 15 wt% fire retardant and acrylonitrile-butadiene-styrene with 1–2 wt% organic montmorillonite formulations, which completely burned. Finally, the samples showed a very good synergy going to a higher reduction of the peak heat release rate and to a minimum mass reduction, as obtained from cone calorimeter tests.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 90%

Section: Introductionmentioning

confidence: 99%

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Fire Properties of Acrylonitrile Butadiene Styrene Enhanced with Organic Montmorillonite and Exolit Fire Retardant

2019

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“…Among the phosphorous-based HFFRs, 9,10-dihydro-9-oxa-10-phosphaphenthrene-10-oxide (DOPO)-derived HFFRs are considered to be suitable alternatives because of their excellent flame retardancy [7]. New market demands have continued to promote the development of flame-retardant technology for improving thermal stability, processability, and mechanical properties [8,9]. Novel HFFRs such as DOPO-derived flame retardants are steadily gaining more market share.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of DOPO-Functionalized MWCNT and Its High Flame-Retardant Performance in Epoxy Nanocomposites

Qiu

et al. 2020

Polymers

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In this work, functionalized multi-walled carbon nanotubes (MWCNT) were synthesized by the reaction between acylated MWCNT and 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9 -oxa-10-phosphaphenanthrene-10-oxide (ODOPB). The obtained MWCNT-ODOPB was well dispersed into epoxy resins together with aluminum diethylphosphinate (AlPi) to form flame-retardant nanocomposites. The epoxy resin nanocomposite with phosphorus content of 1.00 wt % met UL 94 V-0 rating, exhibited LOI value of 39.5, and had a higher T g compared to neat epoxy resin, which indicates its excellent flame retardant performance. These experimental results indicated that MWCNT-ODOPB was a compatible and efficient flame retardant for epoxy resins. Moreover, cone calorimeter analysis showed that the peak heat release rate (pHRR), total heat release (THR) values, and CO 2 production profiles of the composites decreased with an increase in the additional amount of phosphorus. groups onto outside surfaces of carbon nanotubes further diversifies their functions [15][16][17]. For these reasons, functionalized carbon nanotubes with enhanced dispersibility and interfacial interaction in polymers have been applied as group carriers to improve the performance of polymer matrixes [18][19][20].In this study, DOPO-functionalized multi-walled carbon nanotubes (MWCNT) were synthesized by grafting 10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (ODOPB) onto the outside surfaces of acylated MWCNT. The functionalized MWCNT was used as an additive together with nano-sized aluminum diethylphosphinate (AlPi) to form fire-resistant epoxy resin composites. The ER/AlPi/MWCNT-ODOPB nanocomposites with 1 wt % phosphorus content exhibited the best UL 94 rating (V-0) and an upgraded limiting oxygen index (LOI) value of 39.5. At the same time, the as-prepared composites also showed higher T g values than neat epoxy resin for a good interaction between epoxy chains and MWCNT-ODOPB. Besides, cone calorimeter tests (CCT) were used to study the fire hazards for MWCNT-ODOPB-modified epoxy resins. The results indicated a clear decrease in a peak heat release rate (pHHR) and a total release rate (TRR) with an increase in the phosphorus content. Furthermore, the CO 2 and CO production during related tests also exhibited the same trend.

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“…Various metal salts of hypophosphites including aluminum, lanthanum, cerium, magnesium, and calcium find use in fire‐retardant applications in different polymers. Although the flame‐retardant effect of aluminum hypophosphite is widely studied in different polymers, limited number of the studies examines the flame‐retardant effect of calcium hypophosphite (CaHP) . Jian et al investigated the flame‐retardant effect of three metal hypophosphites including aluminum hypophosphite, magnesium hypophosphite, and CaHP in acrylonitrile butadiene styrene.…”

Section: Introductionmentioning

confidence: 99%

The flame‐retardant effect of calcium hypophosphite in various thermoplastic polymers

et al. 2019

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Summary The flame‐retardant behavior of calcium hypophosphite (CaHP) was investigated in different thermoplastic polymers including polyamide 6 (PA), poly (lactic acid) (PLA), thermoplastic polyurethane (TPU), and poly methyl metacrylate (PMMA). CaHP was used at three different amounts of 10, 20, and 30 wt%. The characterization of the composites was performed using limiting oxygen index (LOI), vertical burning test (UL 94), thermogravimetric analysis (TGA), and mass loss calorimeter test. According to the test results, CaHP enhances the fire‐retardant properties in different levels depending on the polymer type. The CaHP exhibits its flame‐retardant effect via the formation of foamed char structure in the condensed phase and via the dilution and radical scavenging effect in the gas phase.

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Flame retardancy and toughness modification of flame retardant polycarbonate/acrylonitrile-butadiene-styrene/AHP composites

Cited by 26 publications

References 35 publications

Fire Properties of Acrylonitrile Butadiene Styrene Enhanced with Organic Montmorillonite and Exolit Fire Retardant

Fire Properties of Acrylonitrile Butadiene Styrene Enhanced with Organic Montmorillonite and Exolit Fire Retardant

Preparation and Characterization of DOPO-Functionalized MWCNT and Its High Flame-Retardant Performance in Epoxy Nanocomposites

The flame‐retardant effect of calcium hypophosphite in various thermoplastic polymers

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