Study on kenaf flame retarded by halogen-free flame retardant/HIPS composites

Xia, Ying; Liu, Ran; Lyu, Xiaoxiao; Zhang, Hui; Wang, Qian; Guo, Jing; Gong, Yumei

doi:10.1007/s12221-014-2181-9

Cited by 4 publications

(5 citation statements)

References 1 publication

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“…High‐impact polystyrene (HIPS) is one of the most important thermoplastic resins. It is widely used as a kind of special resin in electronic equipment covering at home and abroad owing to great mechanical property, electrical character, and processability . HIPS is a type of polystyrene in which polybuta‐diene is added during polymerization.…”

Section: Introductionmentioning

confidence: 99%

Water absorption and mechanical properties of PP/HIPS hybrid composites filled with wood flour

2015

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Water absorption and mechanical performance of the injection‐molded hybrid composites prepared from different ratios of two polymer blends (57 wt%), two compatibilizers (3 wt%), and two wood species (40 wt%) were investigated. The ratio of polypropylene and high‐impact polystyrene (HIPS) gradually increased in the blend (from 10 to 30 wt%). Styrene–ethylene–butylene–styreneblock copolymer and maleic anhydride‐grafted PP (MAPP) were used as compatibilizer (3 wt%). The shore D hardness of the PP/wood composites was improved by the incorporation of the HIPS. The HIPS/wood flour composites showed higher tensile modulus but lower tensile strength than the PP/wood composites. The water resistance of the PP/wood composites decreased with increasing HIPS content. POLYM. COMPOS., 38:863–869, 2017. © 2015 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Water absorption and mechanical properties of PP/HIPS hybrid composites filled with wood flour

2015

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“…However, because concerns about the effects of these halogenated additives on the environment and on human health have been raised, research aimed at developing effective halogen-free flame-retardants has been increasing. 10,11 Phosphorus-containing compounds are promising reactive flame retardants for PS. 13,14 These compounds have multiple advantages, including lower production of toxic combustion gases and the significant molecular quenching effects of phosphorus radicals.…”

Section: Introductionmentioning

confidence: 99%

“…The incorporation of halogen‐containing additives has been reported to have a good flame retardant effect on PS resins, 7–9 and brominated flame‐retardants for PS, such as tetrabromoethane and hexabromocyclododecane, are commercially available. However, because concerns about the effects of these halogenated additives on the environment and on human health have been raised, research aimed at developing effective halogen‐free flame‐retardants has been increasing 10,11 …”

Section: Introductionmentioning

confidence: 99%

Preparation and thermal properties of a novel DOPO‐based Schiff base derivative as a flame retardant for polystyrene

Gao

Xie

Hong

et al. 2022

J of Applied Polymer Sci

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We synthesized an acrylic acid 4-[(10-oxo-10H-9-oxa-10λ5-phospaphenanthren-10-yl)-phenylamino-methyl]-phenyl ester (DOPO-AC), a novel Schiff base derivative based on 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and evaluated its utility as a flame retardant for polystyrene (PS). The synthesized DOPO-AC was characterized by Fourier transform infrared (FTIR) spectroscopy, nuclear magnetic resonance spectroscopy, and high-resolution mass spectrometry. The reactive vinyl groups of DOPO-AC further copolymerized with styrene to produce PS/DOPO-AC. Thermogravimetric analysis showed that DOPO-AC could clearly improve the char residue formation. By comparing the data of T 5% and T 10% , it was found that the thermal stability of the PS/DOPO-AC copolymer was reduced. We investigated the influence of DOPO-AC on the flame retardancy of PS by determining limiting oxygen indexes, conducting vertical burning tests (UL-94), and carrying out thermogravimetry combined with differential thermal analysis. These results revealed that PS containing 5 wt% DOPO-AC had a UL-94V-0 rating and a limiting oxygen index of 29.6%. Residues of PS/DOPO-AC copolymer after the UL-94V tests were analyzed by scanning electron microscopy, X-ray photoelectron spectroscopy, and FTIR spectroscopy; and the results allowed us to propose a flame retardant mechanism for PS/DOPO-AC copolymer. Taken together, our results prove that DOPO-AC is an effective flame retardant for PS.

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“…However, the characteristic of easy combustibility and smoke generation of pure HIPS limits its application. Therefore, how to improve the flame retardancy and smoke suppression of HIPS has always been a key concern for researchers [1][2][3][4][5][6][7][8][9][10]. Phosphorus-containing flame retardant (FR) is one of the most important halogen-free flame retardants due to its low toxicity compared to halogen compounds [3,9].…”

Section: Introductionmentioning

confidence: 99%

“…For conventional FRs, a relatively high loading and smoke emission during the thermal decomposition, etc., can result in the deteriorated mechanical and poor smoke suppression properties [5]. The work of Xia et al [10] showed that the kenaf treated with triethyl phosphate could improve the flame retardancy of HIPS, but greatly reduce its elongation at break. Moreover, liquid phosphorus FRs such as resorcinol bis(diphenyl phosphate) (RDP) and bisphenol A bis(diphenyl phosphate) (BDP) is easy to precipitate on the surface of materials.…”

Section: Introductionmentioning

confidence: 99%

Study on the flame retardancy of high impact polystyrene composites filled with organic-modified carbon nanotubes

Wang

Sun

2020

Plastics, Rubber and Composites

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Carbon nanotubes (CNTs) were organic modified by the synthesized flame retardant (FR) named as spirocyclic pentaerythritol bisphosphorate disphosphoryl chloride/10-(2,5-dihydroxyphenyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide (SPDH). CNTs-g-SPDH with a core-shell microstructure was successfully obtained, and its grafting efficiency was calculated to be about 65%. Effects of pristine CNTs and modified CNTs on flame retardation, structure and mechanical properties of high impact polystyrene (HIPS) were investigated. Cone calorimeter results showed that the heat release rate (HRR) and smoke production rate (SPR) of HIPS nanocomposites filled with CNTs or CNTs-g-SPDH were reduced. Moreover, addition of CNTsg-SPDH resulted in better charring performance than that of pristine CNTs. Modification of CNTs improved compatibility and dispersion in the polymer matrix. Mechanical measurements showed that the Young's modulus increased, while the tensile strength and elongation at break decreased. The negative effect of CNTs-g-SPDH on tensile strength of HIPS resin was obviously minimized by organic modification of CNTs.

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Study on kenaf flame retarded by halogen-free flame retardant/HIPS composites

Cited by 4 publications

References 1 publication

Water absorption and mechanical properties of PP/HIPS hybrid composites filled with wood flour

Water absorption and mechanical properties of PP/HIPS hybrid composites filled with wood flour

Preparation and thermal properties of a novel DOPO‐based Schiff base derivative as a flame retardant for polystyrene

Study on the flame retardancy of high impact polystyrene composites filled with organic-modified carbon nanotubes

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