Facile synthesis of lanthanum hypophosphite and its application in glass-fiber reinforced polyamide 6 as a novel flame retardant

2013 ◽  
Vol 54 ◽  
pp. 1-9 ◽  
Author(s):  
Gang Tang ◽  
Xin Wang ◽  
Rui Zhang ◽  
Wei Yang ◽  
Yuan Hu ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Flame Retardant ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Facile Synthesis ◽  
Glass Fiber Reinforced

Study on the Properties and Mechanism of Flame Retarded Glass Fiber Reinforced Polyamide 6 with Microcapsulated Aluminum Hypophosphite

2014 ◽  
Vol 1033-1034 ◽  
pp. 916-920 ◽  
Author(s):  
Hai Shan Tang ◽  
Yi Lun Tan ◽  
Ning Ping Wang ◽  
Lang Ping Xia ◽  
Jie Zhu ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Flame Retardant ◽  
Flame Retardants ◽  
Mechanical Performance ◽  
Polyamide 6 ◽  
Mechanical Tests ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
Flame Retarded ◽  
Aluminum Hypophosphite

Aluminum hypophosphite can be used to flame retard glass fiber reinforced polyamide 6 (GFPA6). TGIC microcapsulated AlHP (T-AlHP) and epoxy resin microcapsulated AlHP (E-AlHP) were made and put into GFPA6. The vertical burning tests and mechanical tests were taken to study the flame retardant performance and mechanical properties of the corresponding composites. Addition of either T-AlHP or E-AlHP resulted in an increased UL-94 rating and a decreased comprehensive mechanical performance. T-AlHP endowed GFPA6 a better flame retardancy than E-AlHP did. TG showed the decomposition behaviors of T-AlHP, E-AlHP, and the corresponding composites. From Py-GC/MS, the detailed pyrolysis products of flame retardants and the flame-retardant composites were identified. Finally, the properties and mechanism of flame retarded GFPA6 with these two kinds of microcapsulated Aluminum Phosphate were summarized.

Thermal, morphological and mechanical properties of glass fiber reinforced star‐branched polyamide 6

2022 ◽  
Author(s):  
Chunhua Wang ◽  
Yingwei Zhang ◽  
Yong Yi ◽  
Dengwang Lai ◽  
Jun Yang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced

Aluminum hypophosphite and aluminum phenylphosphinate: A comprehensive comparison of chemical interaction during pyrolysis in flame-retarded glass-fiber-reinforced polyamide 6

2019 ◽  
Vol 37 (3) ◽  
pp. 193-212
Author(s):  
Xi Cheng ◽  
Jianming Wu ◽  
Chenguang Yao ◽  
Guisheng Yang
Keyword(s):  
Heat Release ◽  
Glass Fiber ◽  
Chemical Interaction ◽  
Fire Behavior ◽  
Polyamide 6 ◽  
Fiber Reinforced ◽  
Limiting Oxygen Index ◽  
Glass Fiber Reinforced ◽  
Flame Retarded ◽  
Aluminum Hypophosphite

This study compared thermal degradation, pyrolysis behavior, and the fire behavior of flame-retarded glass-fiber-reinforced polyamide 6 with aluminum hypophosphite and aluminum phenylphosphinate (BPA-Al), respectively. We sythesize aluminum phenylphosphinate by benzenephosphinic acid (BPA) and AlCl3.6H2O in water. so we call aluminum phenylphosphinate BPA-Al for short. The dependence of limiting oxygen index on phosphorus content was linear for aluminum hypophosphite and BPA-Al. Thermogravimetric analysis proved aluminum hypophosphite was less stable than BPA-Al. Thermogravimetric-Fourier transform infrared tests showed that aluminum hypophosphite system balanced the charring process and the gas releasing well, and that BPA-Al system enhanced the charring process and decreased the gas releasing. Peak heat release rate and total heat release data proved that aluminum hypophosphite system was superior to BPA-Al system in lowering the heat release. Their differences were caused by different P-H (aluminum hypophosphite) and P-phenyl (BPA-Al) structures. P-H structure did better than P-phenyl structure in balancing the condensed phase effect and the gaseous phase action. So P-H structure (aluminum hypophosphite) was more suitable than P-phenyl structure (BPA-Al) in the flame retardancy of glass-fiber-reinforced polyamide 6.

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