An Efficiently Brominated Flame Retardant Composed of Decabromodiphenyl Oxide and Antimonous Oxide for Long Glass Fiber Reinforced Polypropylene

2013 ◽  
Vol 734-737 ◽  
pp. 2240-2243 ◽  
Author(s):  
Xing Luo ◽  
Min He ◽  
Jian Bing Guo ◽  
Kai Zhou Zhang ◽  
Bin Wu
Keyword(s):  
Mechanical Property ◽  
Glass Fiber ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Oxygen Index ◽  
Fiber Reinforced ◽  
Brominated Flame Retardant ◽  
Limiting Oxygen Index ◽  
Glass Fiber Reinforced ◽  
Long Glass Fiber

An efficiently brominated flame retardant which composed of decabromodiphenyl oxide (DB) and antimonous oxide (AO) was used to flame retardant for long glass fiber reinforced polypropylene (LGFPP). In order to investigate the thermal stability, flame retardancy and mechanical property of DB-AO/LGFPP composites used by thermogravimetric analysis (TGA), limiting oxygen index (LOI), vertical burning (UL-94) and mechanical property tests. The results showed that brominated flame retardant improved flame retardancy of LGFPP efficiently can be proved by TGA, and had less affected on mechanical properties.

Flame Retardancy and Mechanical Properties of Brominated Flame Retardant for Long Glass Fiber Reinforced Polypropylene Composites

2013 ◽  
Vol 750-752 ◽  
pp. 85-89
Author(s):  
Xing Luo ◽  
Min He ◽  
Jian Bing Guo ◽  
Bin Wu
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Fiber Reinforced ◽  
Brominated Flame Retardant ◽  
Limiting Oxygen Index ◽  
Glass Fiber Reinforced ◽  
Long Glass Fiber ◽  
Ul 94

The effects of brominated flame retardant which composed of decabromodiphenyl ethane (DBDPE) and antimonous oxide (AO) on long glass fiber reinforced polypropylene (LGFPP) were investigated by means of limiting oxygen index (LOI), vertical burning (UL-94), thermogravimetry analysis (TGA), and mechanical properties. With the increase of DBDPE-AO content, the LOI values of DBDPE-AO/LGFPP composites increased from 21 to 27.6, and when the content of DBDPE-AO was 16wt%, the composites passed the V-0 rating in UL-94 testing. The experimental results showed that the brominated flame retardant improved flame retardancy of LGFPP, which was proved by the TGA testing. Whats more, the mechanical properties of composites even improved compared with pure LGFPP.

Influence of thermo-oxidative aging on flame retardancy, thermal stability, and mechanical properties of long glass fiber–reinforced polypropylene composites filled with organic montmorillonite and intumescent flame retardant

2019 ◽  
Vol 37 (2) ◽  
pp. 176-189 ◽  
Author(s):  
Ying Zhou ◽  
Weidi He ◽  
Yifan Wu ◽  
Dinghong Xu ◽  
Xiaolang Chen ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Flame Retardant ◽  
Intumescent Flame Retardant ◽  
Fiber Reinforced ◽  
Limiting Oxygen Index ◽  
Polypropylene Composites ◽  
Organic Montmorillonite ◽  
Glass Fiber Reinforced ◽  
Cone Calorimeter Test ◽  
Long Glass Fiber

In this work, the effect of thermo-oxidative aging on organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites was investigated for different exposure times at 140°C. Limiting oxygen index, Underwriters Laboratories-94 tests, cone calorimeter test, and thermogravimetric analysis were used to evaluate the flammability and thermal stability. The results of limiting oxygen index values, Underwriters Laboratories 94 test, and cone calorimeter test show that aging performs negative effect on the flame retardancy of organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites. Thermal oxidation aging markedly changes the decomposition process of organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites. The scanning electronic microscopy images of the external surface of composites indicate that many ground particles and micro-scale cracks are scattered in the surfaces of the composites after aging. The sharp micro-scale cracks and crazing formed on the surface promote the heat and oxygen to penetrate into the bulk of polypropylene matrix. According to the mechanical test results, the thermal oxidation aging reduces the tensile, flexural, and notched impact strengths of organic montmorillonite/intumescent flame retardant/long glass fiber–reinforced polypropylene composites.

An efficiently halogen-free flame-retardant long-glass-fiber-reinforced polypropylene system

2011 ◽  
Vol 96 (3) ◽  
pp. 363-370 ◽  
Author(s):  
Yun Liu ◽  
Cheng-Liang Deng ◽  
Jing Zhao ◽  
Jun-Sheng Wang ◽  
Li Chen ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Flame Retardant ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
Long Glass Fiber ◽  
Halogen Free

Fast-curing halogen-free flame-retardant epoxy resins and their application in glass fiber-reinforced composites

2018 ◽  
Vol 89 (18) ◽  
pp. 3700-3707 ◽  
Author(s):  
Bo Yang ◽  
Yanyun Mao ◽  
Yihui Zhang ◽  
Yi Wei ◽  
Wanshuang Liu ◽  
...  
Keyword(s):  
Glass Fiber ◽  
Flame Retardant ◽  
Epoxy Resins ◽  
Fiber Reinforced Composites ◽  
Reinforced Composites ◽  
Fiber Reinforced ◽  
Epoxy System ◽  
Limiting Oxygen Index ◽  
Glass Fiber Reinforced ◽  
Halogen Free

A series of novel fast-curing halogen-free flame-retardant epoxy resins were formulated and used to prepare glass fiber-reinforced composites. Dynamic mechanical analysis showed that the optimized epoxy system could be completely cured in 0.5 h at 150℃ and had a glass transition temperature ( Tg) of above 130℃. The optimized epoxy system was also used as matrix resin to make glass fiber prepregs and composite panels. The flame-retardant properties of the glass fiber-reinforced composites were investigated, including the limiting oxygen index (LOI) and flaming, smoke and toxicity properties. The glass fiber-reinforced composite had good flame retardancy with a UL-94 V-1 rating and high LOI of ∼36%. More significantly, the composite based on the flame-retardant epoxy resin showed lower smoke density compared with those based on phenolic resins. Finally, the glass fiber prepregs were used to fabricate honeycomb sandwich composites. The peel strength of the epoxy-based composites was almost twice that of the composites based on phenolic resin.

scholarly journals Synergistic Charring Flame-Retardant Behavior of Polyimide and Melamine Polyphosphate in Glass Fiber-Reinforced Polyamide 66

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1851 ◽  
Author(s):  
Wei Tang ◽  
Yanfang Cao ◽  
Lijun Qian ◽  
Yajun Chen ◽  
Yong Qiu ◽  
...  
Keyword(s):  
Heat Release ◽  
Glass Fiber ◽  
Flame Retardant ◽  
Fiber Reinforced ◽  
Polyamide 66 ◽  
Limiting Oxygen Index ◽  
Char Layer ◽  
Glass Fiber Reinforced ◽  
Index Value ◽  
Synergistic Flame Retardant

The synergistic charring, flame-retardant behavior of the macromolecular charring agents polyimide (PI) and melamine polyphosphate (MPP) were studied in glass fiber-reinforced polyamide 66 (PA66). This kind of synergistic charring effect is explained by the fact that PI performed better char-forming ability while working with phosphorus content. The research results showed that, compared with the incorporation of individual MPP, MPP/PI with an appropriate ratio exhibited better flame retardancy and better charring ability. A blend of 11.9%MPP/5.1%PI/PA66 possessed an increased LOI (limiting oxygen index) value of 33.9% and passed the UL94 V-0 rating, obtained a lower peak heat release rate value (pk-HRR), a lower total heat release (THR) value, a lower total smoke release (TSR) value, and a higher residue yield. The results verified the synergistic flame-retardant effect between MPP and PI in the PA66 composite. Melamine polyphosphate and PI jointly interacted with PA66 matrix and locked more carbonaceous compositions in residue and formed a more compact char layer, resulting in a reduced burning intensity and a reduction in the release of fuels. Therefore, the enhanced flame-retardant effect of the MPP/PI system is attributed to the higher charring ability and stronger barrier effect of the char layer in PA66 in the condensed phase.

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