scholarly journals Synthesis, Structures, and Properties of a New Pentaerythritol-Derived Flame Retardant Used in Polyamide 66

ACS Omega ◽  
2021 ◽  
Author(s):  
Shangzhen Guo ◽  
Jiaqi Xu ◽  
Xiuyuan Ni
Keyword(s):  
Flame Retardant ◽  
Polyamide 66 ◽  
Structures And Properties

Synthesis and Characterization of Phosphorus-Containing Flame Retardant Polyamide 66

2020 ◽  
Vol 977 ◽  
pp. 102-107
Author(s):  
Yu Lei Zheng ◽  
Shuang Chen ◽  
Jia Hui Wang ◽  
Ru Xiao
Keyword(s):  
Flame Retardant ◽  
Oxygen Index ◽  
Mechanical And Thermal Properties ◽  
Index Test ◽  
Polyamide 66 ◽  
Scanning Calorimetry ◽  
One Pot ◽  
Limiting Oxygen Index ◽  
Step Process ◽  
Phosphorus Containing

Polyamide 66 (PA66) benefits from excellent mechanical properties and good chemical resistance, which enabled wide application of this material in various industrial fields; however, it suffers from high flammability. Generally, preparation of a flame retardant PA from a reactive flame retardant involves a two-step process. In this study, the flame retardant PA66s (FRPA66s) are synthesized via a one-pot melt copolycondensation route by using a reactive phosphorus-containing flame retardant (FR-B). Then, molecular weight, some mechanical and thermal properties along with flame retardant properties of FRPA66s were investigated by gel permeation chromatography (GPC), instron material testing, differential scanning calorimetry (DSC), thermogravimetry (TG) analysis, vertical burning test (UL 94), and limiting oxygen index test (LOI) techniques. The experimental results confirmed that FRPA66s synthesized by the one-pot method have very similar properties compared to those obtained via the two-step process. Moreover, the prepared materials showed good non-flammability behavior with limiting oxygen index value of over 30% and a vertical burning test result of V-0 rating.

Flame retardant treatments for polyamide 66 textiles: Analysis the role of phosphorus compounds

2020 ◽  
Vol 182 ◽  
pp. 109376
Author(s):  
Chanchal Kumar Kundu ◽  
Chandra Sekhar Reddy Gangireddy ◽  
Lei Song ◽  
Yuan Hu
Keyword(s):  
Flame Retardant ◽  
Phosphorus Compounds ◽  
Polyamide 66

Preparation and properties of halogen-free flame-retardant layered silicate-polyamide 66 nanocomposites

2016 ◽  
Vol 126 ◽  
pp. 107-112 ◽  
Author(s):  
Kenji Tamura ◽  
Shoichi Ohyama ◽  
Kiyoshi Umeyama ◽  
Takafumi Kitazawa ◽  
Akihiko Yamagishi
Keyword(s):  
Flame Retardant ◽  
Layered Silicate ◽  
Polyamide 66 ◽  
Halogen Free

scholarly journals Suppression of Smoldering of Calcium Alginate Flame-Retardant Paper by Flame-Retardant Polyamide-66

Polymers ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 430
Author(s):  
Kai Xu ◽  
Xing Tian ◽  
Ying Cao ◽  
Yaqi He ◽  
Yanzhi Xia ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Calcium Alginate ◽  
Ignition Time ◽  
Carbon Layer ◽  
Polyamide 66 ◽  
Cone Calorimetry ◽  
Air Atmosphere ◽  
Phosphorous Flame Retardant ◽  
Composite Paper

Calcium alginate (Ca-Alg) fibers are renewable fibers obtained from the ocean with essential flame retardancy, which have recently been applied as components of flame-retardant paper. However, the application of Ca-Alg fibers is limited because of their tendency to smolder. Therefore, composites papers were fabricated by blending using flame-retardant polyamide-66 (FR-PA), with a 5 wt% content of phosphorous flame retardant, which will form molten carbon during combustion. When the FR-PA content is 30% of the composite paper, FR-PA forms a compact carbon layer on the surface of the Ca-Alg fibers during combustion, which isolates the mass/heat transfer and effectively suppresses the smoldering of Ca-Alg. This consists of a condensed flame retardant mechanism. Furthermore, the combustion and thermal degradation behavior of paper were analyzed by cone calorimetry (CONE), TG and TG-IR. Ca-Alg in the composite paper decomposed and released CO2 before ignition, which delayed the ignition time. Simultaneously, the FR-PA contained in the composite paper effectively inhibited the combustion of volatile combustibles in the gas phase. Overall, FR-PA and Ca-Alg improve the thermal stability of the composite paper in different temperature regions under air atmosphere. Ca-Alg reduces the formation of aromatic products and NH3 in the composite paper under N2 atmosphere. Ca-Alg-based paper with excellent flame retardancy was successfully prepared.

UV Grafting of a DOPO-Based Phosphoramidate Monomer onto Polyamide 66 Fabrics for Flame Retardant Treatment

2017 ◽  
Vol 56 (6) ◽  
pp. 1376-1384 ◽  
Author(s):  
Chanchal Kumar Kundu ◽  
Bin Yu ◽  
Chandra Sekhar Reddy Gangireddy ◽  
Xiaowei Mu ◽  
Bibo Wang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Polyamide 66
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