An efficient interfacial flame-resistance mode to prepare glass fiber reinforced and flame retarded polyamide 6 with high performance

Han, Youngho; Xu, Yi; Liu, Yuan; Wang, Qi; Zhang, Zhijian; Wang, Zhangyu

doi:10.1039/c3ta11312d

Cited by 54 publications

(34 citation statements)

References 22 publications

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“…Due to the special “wick effect” of LGF during the flammability , PP/LGF composites not only have low limiting oxygen index (LOI), but also generate lots of heat when burning, which can bring a fire hazard. Therefore, the surface modification for this flame retardant is an important method to widen the application areas of PP/LGF composites.…”

Section: Introductionmentioning

confidence: 99%

Effect of thermo‐oxidative aging on the mechanical and flame retardant properties of long glass fiber‐reinforced polypropylene composites filled with red phosphorus

Zhou

Wang

et al. 2016

Polymer Composites

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In this work, the long glass fiber-reinforced polypropylene/red phosphorus (PP/LGF/RP) flame retardant composites were prepared by melting blend. The effects of thermo-oxidative aging on the mechanical properties, morphologies, and fire resistances of the PP/LGF/RP composites with different thermal exposure time at 1408C were investigated and discussed. The results showed that the crystallinity of PP in the PP/LGF/RP composites decreased and the mechanical properties decreased significantly with increasing the aging time. The scanning electronic microscopy photos indicated that the obvious reticular crack appeared on the surface of PP/LGF/RP composites and larger cracks appeared in local scope with an increase of aging time. The results from energy dispersive X-ray analysis (EDAX) proved that RP migrated from the inner to the surface of the composites. And the corresponding temperatures of maximum weight loss rate (T max ) of the PP/LGF/RP composites remained nearly unchanged, but the initial decomposition temperature (T 5% ) increased firstly, and then decreased. The flame retardant performances from the UL-94 tests, limiting oxygen index, and cone calorimeter test showed that the thermo-oxidative aging had a little effect on the flammability of the PP/LGF/RP composites. The thermal stability of PP/LGF/RP composites was improved slightly after thermo-oxidative aging. POLYM. COMPOS., 00:000-000, 2016. FIG. 5. Effect of thermo-oxidative aging on morphology of the impact fracture surfaces of PP/LGF/RP composites: (a) unaged, 3003; (b) 50 days aged, 3003; (c) unaged, 1,0003; and (d) 50 days aged, 1,0003. [Color figure can be viewed at wileyonlinelibrary.com]

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Section: Introductionmentioning

confidence: 99%

Effect of thermo‐oxidative aging on the mechanical and flame retardant properties of long glass fiber‐reinforced polypropylene composites filled with red phosphorus

Zhou

Wang

et al. 2016

Polymer Composites

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“…The Yang's modulus of EVA/DIEVA composites is 44.62 which slightly decreased when compared with EVA/ATH composites and increased when compared with EVA/ATH/DOSA composites. Based on the results, we can conclude that a large amount of ATH content could seriously influence the mechanical properties but the immobilization of DOSA on ATH particles cause a positive effect on the mechanical properties of EVA composites …”

Section: Resultsmentioning

confidence: 91%

“…The population of hydroxy groups on the ATH surface greatly decreased because of being consumed in the reaction with DOSA, result in a more organic surface. And then the low‐surface polarity leads to an increasing compatibility with the EVA matrix …”

Section: Resultsmentioning

confidence: 99%

Synergistic effect of phosphorus‐containing silane coupling agent with alumina trihydrate in ethylene‐vinyl acetate composites

Kong

et al. 2017

Adv Polym Technol

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A new interfacial modifier containing silicon and phosphorus has been developed to improve the flame retardancy and mechanical properties of ethylene-vinyl acetate (EVA)/alumina trihydrate (ATH) composites. The EVA/ATH composites were prepared via blending EVA pellets with different kinds of ATH particles. The results showed a synergistic effect of phosphorus-containing silane coupling agent (DOSA) and ATH particles on the flame retardancy of EVA composites. When compared with pure EVA of 19.1, the limiting oxygen index (LOI) value was increased to 31.4.This was the result of the formation of a charred layer and the enhanced compatibilities between inorganic particles and polymer matrix. The experimental results also showed that the modified ATH particles by using synthesized DOSA led to an increase in mechanical properties. The improvement on the mechanical and thermal properties of EVA composites was mostly attributed to the better dispersion ability of the modified ATH particles in the polymer matrix and a synergistic effect between the DOSA and ATH particles. The char-formation ability of EVA composites has also been analyzed and the synthesized DOSA has shown a positive effect. K E Y W O R D Sethylene-vinyl acetate, modified, silane coupling agent, synergistic flame retardancy

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“…Some methods of reducing water absorption for GF‐PA6 have been reported. For example, a small amount of epoxy resin added to the GF‐PA6 composites could improve the bonding strength between GF and PA6, which can improve the overall mechanical properties and water resistance . However, a chain reaction, which is difficult to control during processing, always occurs when blending or extruding PA6 and epoxy resin .…”

Section: Introductionmentioning

confidence: 99%

Synergistic effect of polyfunctional silane coupling agent and styrene acrylonitrile copolymer on the water‐resistant and mechanical performances of glass fiber–reinforced polyamide 6

Wang

Yang

et al. 2019

Polymers for Advanced Techs

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Adverse effects of a high-water absorption rate on properties of a glass fiberreinforced polyamide 6 (GF-PA6) composite significantly reduce performance and limit application in humid environments. In this paper, a polyfunctional silane (PFS) coupling agent with amino (-NH 2 ) and imino (-NH) groups and styrene acrylonitrile copolymer (SAN) were added to a composite, GF-PA6, to prepare GF-PA6/SAN/ PFS composites via melt blending in a twin-screw extruder. The effects of SAN and PFS content on the static and dynamic mechanical properties of the composites before and after water absorption were investigated in detail. The microstructure of the fracture surface was analyzed by a scanning electron microscope (SEM). The results show that the addition of SAN and PFS could effectively inhibit water absorption of the GF-PA6 composites. The alkoxyl groups on PFS reacted chemically with the nitrile groups of SAN, which enriched SAN on the interface between the fiber and matrix during the extrusion and mixing process to improve the effect of water prevention. Therefore, the mechanical properties of the wet state were notably improved while preventing water from permeating the interface by only the addition of a small amount of SAN and PFS. Dynamic mechanical analysis (DMA) results showed that the addition of PFS improved the compatibility of PA6 with SAN and enhanced the interface adhesion between fiber and PA6. In terms of test result of the comprehensive performance, 10 phr SAN with 0.6 phr PFS was the best dosage. KEYWORDS glass fiber (GF), polyamide 6 (PA6), polyfunctional silane (PFS) coupling agent, styrene acrylonitrile copolymer (SAN)

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An efficient interfacial flame-resistance mode to prepare glass fiber reinforced and flame retarded polyamide 6 with high performance

Cited by 54 publications

References 22 publications

Effect of thermo‐oxidative aging on the mechanical and flame retardant properties of long glass fiber‐reinforced polypropylene composites filled with red phosphorus

Effect of thermo‐oxidative aging on the mechanical and flame retardant properties of long glass fiber‐reinforced polypropylene composites filled with red phosphorus

Synergistic effect of phosphorus‐containing silane coupling agent with alumina trihydrate in ethylene‐vinyl acetate composites

Synergistic effect of polyfunctional silane coupling agent and styrene acrylonitrile copolymer on the water‐resistant and mechanical performances of glass fiber–reinforced polyamide 6

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