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Flame Retardant Finishing of Poly(ethylene terephthalate) Fabric with a Carbon Source Containing DOPO Derivative 被引量:1
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作者 方寅春 周翔 +1 位作者 邢志奇 吴亚容 《Journal of Donghua University(English Edition)》 EI CAS 2017年第3期377-384,共8页
9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide( DOPO)-based flame retardant( DOPO-DOPC) which contains carbon source was used to improve the flame retardancy of poly( ethylene terephthalate)( PET) fabrics. The pr... 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide( DOPO)-based flame retardant( DOPO-DOPC) which contains carbon source was used to improve the flame retardancy of poly( ethylene terephthalate)( PET) fabrics. The prepared DOPODOPC dispersion was applied onto PET fabrics via two kinds of processes,thermosol process and exhaustion process,and in the later using it alone or together with disperse dyes. The flame retardancy of PET fabrics was determined by limiting oxygen index( LOI) and vertical burning test. The results showed that DOPODOPC could obviously improve the flame retardancy of PET fabrics.The PET fabric treated by 60 g/L DOPO-DOPC dispersion via exhaustion process achieved an LOI value of 32. 3%,for example.The flame retardancy and dyeing performances showed that DOPODOPC dispersion could be used together with a part of disperse dyes in one bath. The thermal stability of DOPO-DOPC and the treated PET fabrics were investigated by thermogravimetric analysis( TGA). And the flame retardant mechanism of DOPO-DOPC treated PET fabrics was further investigated by pyrolysis-gas chromatography/mass spectrometry( Py-GC/MS), Fourier transform infrared spectroscopy( FTIR) and scanning electron microscopy( SEM). 展开更多
关键词 flame terephthalate fabrics disperse retardant burning dyeing exhaustion pyrolysis combustion
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An Efficient Halogen-free Flame Retardant for Polyethylene:Piperazine-modified Ammonium Polyphosphates with Different Structures 被引量:5
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作者 Shi-fu Liao 邓聪 +2 位作者 Sheng-chao Huang Jing-yu Cao 王玉忠 《Chinese Journal of Polymer Science》 SCIE CAS CSCD 2016年第11期1339-1353,共15页
In this study, piperazine-modified ammonium polyphosphates(PA-APPs) with hierarchical structure were synthesized through ion exchange reaction. ^1H nuclear magnetic resonance(^1H-NMR), Fourier transform infrared s... In this study, piperazine-modified ammonium polyphosphates(PA-APPs) with hierarchical structure were synthesized through ion exchange reaction. ^1H nuclear magnetic resonance(^1H-NMR), Fourier transform infrared spectra(FTIR), elemental analysis(EA), and inductively coupled plasma atomic emission spectroscopy(ICP-AES) confirmed that the PA-APPs with different structures were prepared successfully. Then these flame retardants were used alone as monocomponent intumescent flame retardant for low-density polyethylene(LDPE). Combustion tests demonstrated that the flameretardant efficiency of PA-APP containing about 7 wt% carbon(PA-APP_7) was significantly higher than that of the other PAAPPs with more or less carbon. The flame-retarded LDPE system with 30 wt% PA-APP_7 passed the UL-94 V-0 rating, and had the oxygen index(LOI) of 33.0%. Thermal analysis illustrated that the thermal decomposition behavior of PA-APP changed with incorporating different contents of PA. For all these PA-APPs, PA-APP_7 showed higher thermal stability than the other PA-APP flame retardants. All the experimental results proved that PA-APP_7 could reach the balance of an acid source, a blowing source, and a charring source as a mono-component intumescent flame retardant for LDPE. Further, it led to the formation of a compact intumescent char layer containing the structures of rich P―O―P, P―N―C, C=C, etc. during burning which in turn resulted in the excellent flame-retardant efficiency of PA-APP7. 展开更多
关键词 flame retardant hierarchical burning polyethylene illustrated passed decomposing combustion ammonium
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