The flame retardancy and rheological properties of PA6/MCA modified by DOPO-based chain extender

Cai, Jianan; Wirasaputra, Alvianto; Zhu, Yaming; Zhou, Yubin; Zhang, Chunhua; Zhao, Jianqing

doi:10.1039/c6ra28293h

Cited by 34 publications

(28 citation statements)

References 31 publications

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“…In the PA66 copolymer, DOPO-SiO 2 precursor decreased the pHRR by 33%, while the effective heat of combustion (EHC) was reduced by 18% [104]. The chain extension with a DOPO-based diepoxide compound (DEP) is another method to enhance FR properties of PA6 [105]. The polymer loaded with 2 wt% DEP and 10 wt% MCA passed the UL-94 test obtaining a V-0 classification, while the LOI jumped from 22.0 to 32.3%.…”

Section: Organic-based Flame Retardantsmentioning

confidence: 99%

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

et al. 2019

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Future materials in the field of thermoplastics require a lower impact on the environment. Actual thermoplastic materials also require "greener" additives for thermal and fire resistance profile. In this work, some of the recent solutions for halogen-free flame retardants were discussed in the context of viable routes with economical and industrial relevance. The fire retardant mechanism was discussed in order to imagine new solutions for future additives. Some of the main (inorganic, organic or hybrid) flame retardants can be used as common platform for the next classes of thermoplastic composites (synthetic, natural, or bio-based). The new generation of flame retardants (based on the emerging solutions) will have to surpass two major barriers: the cost effectiveness and the need for high concentration (which usually affects other properties).

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Section: Organic-based Flame Retardantsmentioning

confidence: 99%

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

et al. 2019

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“…Th is promotes the formation of a closed char layer. 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10oxide-based diepoxide (DEP) [34,35] cyclotriphosphazene [36][37][38] Phosphorous, aluminium aluminium dialkylphosphinate (AlPi) [16, 28-31, 33, [38-46] aluminium hypophosphite [41,42,47] Phosphorous, boron boron phosphate [44,48,49] Phosphorous, silicon 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10oxide-functionalised triethoxysilane (SiDOPO) [50,51] diethylphosphatoethyltriethoxysilane (SiP) 52 MPP, as a representative of the P/N-based FR additives, was developed as a char former in the intumescent FR action. Th e latter is characterised by swelling and expanding at temperatures higher than critical temperature, leading to the formation of a foamed cellular charred layer [4,9,69].…”

Section: Structures Of Fr Additives and Their Mode Of Actionmentioning

confidence: 99%

“…Th ere is little research that reports on the in situ polymerisation of ε-caprolactam in the presence of FR additives [20,21,23,24,26,72,73]. However, the in situ polymerisation of ε-caprolactam in the presence of additives is advantageous over the melt-compounding method as it enables the production of PA6 nanocomposites with nanodispersed additives [33][34][35][36][37][38]. According to our knowledge, Alfonso et al [74] were the fi rst to report results regarding the in situ polymerisation of ε-caprolactam in the presence of FR additives.…”

Section: In Situ Polymerization Of ε-Caprolactam In the Presence Of Fmentioning

confidence: 99%

Recent Advances in Production of Flame Retardant Polyamide 6 Filament Yarns

Vasiljević¹,

Čolović²,

Jerman³

et al. 2018

TEK

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Polyamide 6 is one of the key engineering polymers with excellent mechanical properties and resistance which enable its global production and wide use in the industrial and domestic plastic manufacturing. Polyamide 6 also represents an important raw material for the production of technical fi lament yarns. However, an important drawback associated with the fl ammability of PA6 fi bres has not been resolved yet. This paper reviews the most common halogen-free fl ame retardant additives for polyamide 6, their mode of action as well as diff erent strategies for the incorporation of fl ame retardant additives in the production process of fl ame ratardant polyamide 6 fi bres. The most recent research and patents on this topic are critically discussed.

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“…Additionally, halogenated flame retardants released a great quantity of toxic gases during combustion. To solve this problem, a possible way is to prepare the halogen‐free reactive flame retardants that benefit polyurethane materials with better mechanical and fire‐proof properties …”

Section: Introductionmentioning

confidence: 99%

Highly effective flame‐retarded polyester diol with synergistic effects for waterborne polyurethane application

Wang

et al. 2019

J of Applied Polymer Sci

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In this article, a novel bi-reactive flame retardant (FRD) was successfully synthesized for waterborne polyurethane (WPU). The chemical structures of FRD were characterized by Fourier-transform infrared spectra and 1 H and 31 P nuclear magnetic resonance. Then, the FRD was incorporated into polyurethane backbone to prepare a series of flame-retarded WPU (FRWPU). The flammability characteristics of FRWPU were measured by limited oxygen index (LOI), UL-94, and cone calorimeter (CCT) tests. The FRPWU-7 had a high LOI value of 30.5% with UL94 V-0 rating. Moreover, the CCT values indicated that FRD induced the gaseous phase quenching effect of phosphoruscontaining free radicals derived from the decomposed phosphaphenanthrene group on the gas-phase flame retardancy. Scanning electron micrographs and Raman spectra exhibited that FRD promoted the charring formation of phosphorus-rich char layer with graphitized surface and honeycomb-like intumescent structure in WPU matrix during burning. This study provides a new way to design a novel reactive P-P flame retardant consisted of the phosphaphenanthrene group and intumescent flame retardant for WPU application.

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The flame retardancy and rheological properties of PA6/MCA modified by DOPO-based chain extender

Abstract: Addition of DOPO-based chain extender (DEP) simultaneously enhanced the flame retardancy and mechanical properties of PA6/MCA through chain extension and coaction in flame-retarding.

Cited by 34 publications

References 31 publications

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

Halogen-free flame retardants for application in thermoplastics based on condensation polymers

Recent Advances in Production of Flame Retardant Polyamide 6 Filament Yarns

Highly effective flame‐retarded polyester diol with synergistic effects for waterborne polyurethane application

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