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.

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.

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.

scholarly journals Halogen Free Flame-Retardant Glass Fiber Reinforced PA 66 / PPO Alloys

2021 ◽  
Author(s):  
Zhenya Zhang ◽  
Kunpeng Cai ◽  
Yaxin Guo ◽  
Xiaohua Liu ◽  
Suqin He ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Heat Resistance ◽  
Glass Fiber ◽  
Flame Retardant ◽  
Wear Volume ◽  
Fiber Reinforced ◽  
Wear Properties ◽  
Excellent Thermal Stability ◽  
Glass Fiber Reinforced ◽  
Halogen Free

Abstract Halogen-free flame retardants are ideal plastic additives that meet carbon neutral requirements. In this work, halogen free flame retardant with glass fiber reinforced PA66/PPO composites were prepared by using coated red phosphorus (FRM-150B) and phosphorus-silicon flame retardant (WR6002). The mechanical properties, heat resistance, friction and wear properties and flame retardancy were carried out to evaluate the performances of composites using as structural parts that require heat resistance, dimensional stability and accuracy. It was found that the friction coefficient and wear volume of the composites were improved with the contents of glass fiber increased, as a result, PA66/PPO composites was obtained with excellent comprehensive performance when the content of compatilizer is 7%, the glass fiber was 30%, the content of FRM is 8% and the phosphorous-silicon flame retardant is 16%. The flame retardant effect of FRM-150B and WR6002 in PA66/PPO was presented in the condensed phase, the results showed that the composite material with 16% WR6002 forms a carbon layer with excellent thermal stability. On the other hand, the mechanical properties of composites were hardly affected, has important prospects in automotive components and household appliances

scholarly journals The Effects of Strain Rates on Mechanical Properties and Failure Behavior of Long Glass Fiber Reinforced Thermoplastic Composites

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2019 ◽  
Author(s):  
Junjia Cui ◽  
Shaoluo Wang ◽  
Shuhao Wang ◽  
Guangyao Li ◽  
Peilin Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Glass Fiber ◽  
Ultimate Strength ◽  
Fracture Strain ◽  
Thermoplastic Composites ◽  
Strain Rates ◽  
Fiber Breakage ◽  
Fiber Reinforced ◽  
Glass Fiber Reinforced ◽  
Long Glass Fiber

Long glass fiber reinforced thermoplastic composites have been increasingly used in automotive parts due to their excellent mechanical properties and recyclability. However, the effects of strain rates on the mechanical properties and failure mechanisms of long glass fiber reinforced polypropylene composites (LGFRPPs) have not been studied systematically. In this study, the effects of strain rates (from 0.001 s−1 to 400 s−1) on the mechanical properties and failure mechanism of LGFRPPs were investigated. The results showed that ultimate strength and fracture strain of the LGFRPPs increased obviously, whereas the stiffness remained essentially unchanged with the strain rates from low to high. The micro-failure modes mainly consisted of fibers pulled out, fiber breakage, interfacial debonding, matrix cracking, and ductile to brittle (ductile pulling of fibrils/micro-fibrils) fracture behavior of the matrix. As the strain rates increased, the interfacial bonding properties of LGFRPPs increased, resulting in a gradual increase of fiber breakage at the fracture surface of the specimen and the gradual decrease of pull-out. In this process, more failure energy was absorbed, thus, the ultimate strength and fracture strain of LGFRPPs were improved.

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