scholarly journals Pyrolysis products and thermal degradation mechanism of intrinsically flame-retardant carrageenan fiber

RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25253-25264 ◽  
Author(s):  
Zhixin Xue ◽  
Weiwei Zhang ◽  
Miao Yan ◽  
Jingjing Liu ◽  
Bingbing Wang ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Flame Retardant ◽  
Degradation Mechanism ◽  
Wet Spinning ◽  
Pyrolysis Products ◽  
Thermal Degradation Mechanism

Carrageenan fiber (CAF) was prepared by a wet spinning method to develop an excellent flame-retardant material.

scholarly journals Flame-Retardant and Thermal Degradation Mechanism of Caged Phosphate Charring Agent with Melamine Pyrophosphate for Polypropylene

2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Xuejun Lai ◽  
Jiedong Qiu ◽  
Hongqiang Li ◽  
Xingrong Zeng ◽  
Shuang Tang ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Heat Release ◽  
Flame Retardant ◽  
Heat Release Rate ◽  
Release Rate ◽  
Degradation Mechanism ◽  
Limiting Oxygen Index ◽  
Thermal Degradation Mechanism ◽  
Charring Agent ◽  
Ul 94

An efficient caged phosphate charring agent named PEPA was synthesized and combined with melamine pyrophosphate (MPP) to flame-retard polypropylene (PP). The effects of MPP/PEPA on the flame retardancy and thermal degradation of PP were investigated by limiting oxygen index (LOI), vertical burning test (UL-94), cone calorimetric test (CCT), and thermogravimetric analysis (TGA). It was found that PEPA showed an outstanding synergistic effect with MPP in flame retardant PP. When the content of PEPA was 13.3 wt% and MPP was 6.7 wt%, the LOI value of the flame retardant PP was 33.0% and the UL-94 test was classed as a V-0 rating. Meanwhile, the peak heat release rate (PHRR), average heat release rate (AV-HRR), and average mass loss rate (AV-MLR) of the mixture were significantly reduced. The flame-retardant and thermal degradation mechanism of MPP/PEPA was investigated by TGA, Fourier transform infrared spectroscopy (FTIR), TG-FTIR, and scanning electron microscopy-energy dispersive X-ray spectrometry (SEM-EDXS). It revealed that MPP/PEPA could generate the triazine oligomer and phosphorus-containing compound radicals which changed the thermal degradation behavior of PP. Meanwhile, a compact and thermostable intumescent char was formed and covered on the matrix surface to prevent PP from degrading and burning.

Synthesis and thermal degradation mechanism of polyorganocarboranesiloxanes containing m-carboranylmethyl unit

2017 ◽  
Vol 144 ◽  
pp. 304-314 ◽  
Author(s):  
Pingping Lou ◽  
Xuezhong Zhang ◽  
Bozheng Liu ◽  
Xiyin Gao ◽  
Zhijie Zhang ◽  
...  
Keyword(s):  
Thermal Degradation ◽  
Degradation Mechanism ◽  
Thermal Degradation Mechanism
Sign in / Sign up

Export Citation Format

Share Document