Thermal oxidative degradation kinetics of flame-retarded polypropylene with intumescent flame-retardant master batches in situ prepared in twin-screw extruder

2007 ◽  
Vol 92 (2) ◽  
pp. 280-291 ◽  
Author(s):  
Yinghong Chen ◽  
Qi Wang
Keyword(s):  
Flame Retardant ◽  
Degradation Kinetics ◽  
Oxidative Degradation ◽  
Thermal Oxidative Degradation ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Twin Screw ◽  
Flame Retarded ◽  
Kinetics Of

Study of a novel co-rotating non-twin screw extruder in processing flame retardant polymer materials

2017 ◽  
Vol 37 (8) ◽  
pp. 827-835
Author(s):  
Song Zhao ◽  
Baiping Xu ◽  
Liang He ◽  
Huiwen Yu ◽  
Shouzai Tan
Keyword(s):  
Flame Retardant ◽  
Mechanical Performance ◽  
Acrylonitrile Butadiene Styrene ◽  
Operating Conditions ◽  
Polymer Materials ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Limiting Oxygen Index ◽  
Twin Screw ◽  
Halogen Free

Abstract A thorough study was carried out to investigate the priority of a novel co-rotating non-twin screw extruder (NTSE) over a traditional twin screw extruder (TSE) in the mixing process of halogen-free intumescent flame-retardant acrylonitrile-butadiene-styrene (ABS) composites. The homogeneity of the flame-retardant additives of the composites processed by NTSE and TSE under the same operating conditions was characterized by using mechanical performance properties, limiting oxygen index values, UL-94 tests, and thermogravimetric analysis. All the results suggested that NTSE could achieve better mixing of the flame-retardant additives in the polymer matrix than TSE, which was further clarified by the scanning electron microscope pictures.

Kinetics of thermal oxidative degradation of phosphorus-containing flame retardant copolyesters

2002 ◽  
Vol 76 (3) ◽  
pp. 401-409 ◽  
Author(s):  
Bo Wu ◽  
Yu-Zhong Wang ◽  
Xiu-Li Wang ◽  
Ke-Ke Yang ◽  
Yong-Dong Jin ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Oxidative Degradation ◽  
Thermal Oxidative Degradation ◽  
Phosphorus Containing ◽  
Kinetics Of

Research on Flame Retardant and Insulation of Plastic Alloys of PEEK/PEI/PES

2014 ◽  
Vol 584-586 ◽  
pp. 1523-1526
Author(s):  
Jian Bing Chen ◽  
Zhun Zhun Li ◽  
Jiang Jie Wang ◽  
Jin Ming Qian
Keyword(s):  
Flame Retardant ◽  
Oxygen Index ◽  
Volume Resistivity ◽  
Twin Screw Extruder ◽  
Screw Extruder ◽  
Mass Ratios ◽  
Twin Screw ◽  
Insulation Performance

The PEEK/PEI/PES plastic alloys were processed by twin-screw extruder at 370°C separately with five mass ratios of 70/30, 70/25/5, 65/30/5, 60/30/10. The flame retardant of plastic alloys were investigated by experiments, their results showed that, the oxygen index declines when PES was added, the oxygen index of plastic alloy with mass ratios of 70/30 is higher than that of pure PEEK or PES, lower than that of pure PEI, which the oxygen index is 37.1%. The volume resistivity plastic alloy with mass ratios of 60/30/10 is 3.72×1017Ω·cm, which is higher than that of pure PEEK and PES for two orders of magnitude, and the insulation performance of PEEK is improved significantly by alloying.

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