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

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

Journal of Polymer Engineering ◽

10.1515/polyeng-2016-0235 ◽

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.

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Study on Solvent Resistance of Ternary Plastic Alloys of PEEK/PEI/PES

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.900.27 ◽

2014 ◽

Vol 900 ◽

pp. 27-31

Author(s):

Jian Bing Chen

Keyword(s):

Dimethyl Formamide ◽

Twin Screw Extruder ◽

Mass Ratio ◽

Screw Extruder ◽

Solvent Resistance ◽

Mass Ratios ◽

Twin Screw

The PEEK/PEI/PES plastic alloys were processed by twin-screw extruder at 370°C separately with five mass ratios of 70/30/0, 70/25/5, 65/30/5, 60/30/10, The solvent resistance were investigated by experiments, their results showed that the concentrated H2SO4 resistance of alloy plates had been improved by alloying in 6h, the acetone resistance of mass ratio of 70/25/5 is preferably, increasing the content of PES, the acetone resistance becomes relatively stable, in addition, the chloroform and N, N-dimethyl formamide resistance of mass ratio of 70/25/5 is also preferably, and the polarity of the reagent has a limit influence on solvent resistance of plastics alloy materials.

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