Flame-retardant and thermal degradation mechanism of low-density polyethylene modified with aluminum hypophosphite and microencapsulated red phosphorus

2015 ◽  
Vol 133 (13) ◽  
pp. n/a-n/a ◽  
Author(s):  
De Kang Wang ◽  
Hui He ◽  
Peng Yu

2017 ◽  
Vol 41 (8) ◽  
pp. 983-992 ◽  
Author(s):  
Shenghui Tian ◽  
Hui He ◽  
Dekang Wang ◽  
Peng Yu ◽  
Yunchao Jia ◽  
...  


2015 ◽  
Vol 2015 ◽  
pp. 1-11 ◽  
Author(s):  
Xuejun Lai ◽  
Jiedong Qiu ◽  
Hongqiang Li ◽  
Xingrong Zeng ◽  
Shuang Tang ◽  
...  

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.





2019 ◽  
Vol 138 (2) ◽  
pp. 1011-1019 ◽  
Author(s):  
Wenxiong Li ◽  
Shaoxian Li ◽  
Zhou Cheng ◽  
Xiaoping Hu ◽  
Wenbin Yang ◽  
...  


2014 ◽  
Vol 99 ◽  
pp. 35-42 ◽  
Author(s):  
Yuan-Wei Yan ◽  
Jian-Qian Huang ◽  
Ya-Hui Guan ◽  
Ke Shang ◽  
Rong-Kun Jian ◽  
...  


RSC Advances ◽  
2017 ◽  
Vol 7 (41) ◽  
pp. 25253-25264 ◽  
Author(s):  
Zhixin Xue ◽  
Weiwei Zhang ◽  
Miao Yan ◽  
Jingjing Liu ◽  
Bingbing Wang ◽  
...  

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



2011 ◽  
Vol 96 (5) ◽  
pp. 936-942 ◽  
Author(s):  
Jianjun Zhang ◽  
Quan Ji ◽  
Xiuhong Shen ◽  
Yanzhi Xia ◽  
Liwen Tan ◽  
...  




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