Synthesis, Application of a Novel Halogen-Free Intumescent Flame Retardant Agent for Poplar Wood Veneer

2014 ◽  
Vol 1004-1005 ◽  
pp. 1022-1025
Author(s):  
Wang Wang Yu ◽  
Tao Huang ◽  
Wen Lei
Keyword(s):  
Flame Retardant ◽  
Oxygen Index ◽  
Raw Materials ◽  
Orthogonal Experiment ◽  
Influence Factors ◽  
Intumescent Flame Retardant ◽  
Limit Oxygen Index ◽  
Poplar Wood ◽  
Wood Veneer ◽  
Halogen Free

A novel non-halogen intumescent flame retardant agent (IFR) was prepared by using phosphoric acid, pentaerythritol and aniline as raw materials, a flame-retardant poplar wood veneer was prepared by treating the veneer with IFR. The influence factors of flame retardant processing technology on poplar wood veneer were studied by the orthogonal experiment. Flammability of the veneer was investigated by Limit Oxygen Index (LOI) test. The optimal impregnated time, impregnated temperature and impregnated concentration of IFR treated poplar wood veneer were 3h, 80°C and 18% respectively, which can make the veneer get the highest LOI of 46.7%.

Preparation and Properties of Halogen-Free Flame Retardant Blending Modification Polyester

2012 ◽  
Vol 463-464 ◽  
pp. 515-518
Author(s):  
Sheng Chen ◽  
Min Su ◽  
Jian Wu Lan ◽  
Qing Kang Zheng
Keyword(s):  
Thermal Stability ◽  
Differential Scanning Calorimetry ◽  
Flame Retardant ◽  
Melting Temperature ◽  
Polyethylene Terephthalate ◽  
Substitution Reaction ◽  
Oxygen Index ◽  
Limit Oxygen Index ◽  
Scanning Calorimetry ◽  
Halogen Free

Phosphorous-containing flame retardant additive for polyethylene terephthalate (PET), hexa(phenylamino)cyclotriphosphazene (HPACP) was synthesized by substitution reaction of hexachlorocyclotriphosphazene (HCCP) with aniline. The melting temperature of HPACP are 279.2°C, and HPACP possesses of favorable thermal stability. Flame-retardant effect of HPACP on PET was investigated by Differential Scanning Calorimetry (DSC) and Limit Oxygen Index (LOI) methods. With the content of flame retardant HPACP increasing, the melting enthalpy of PET reduced, while the melting temperature and onset temperature showed a decreasing tendency. With the weakening of melt dripping phenomenon, LOI of PET/ HPACP flame retardant systems increases with the increase of content of HPACP. LOI of PET containing 10 wt% of HPACP is 28.3.

A New Intumescent Flame Retardant on Epoxy Resin

2014 ◽  
Vol 665 ◽  
pp. 307-310 ◽  
Author(s):  
Chun Feng Sun ◽  
Ming Gao
Keyword(s):  
Infrared Spectroscopy ◽  
Phosphoric Acid ◽  
Flame Retardant ◽  
Epoxy Resin ◽  
Oxygen Index ◽  
Phosphorus Oxychloride ◽  
Low Cost ◽  
Intumescent Flame Retardant ◽  
Limit Oxygen Index ◽  
Water As Solvent

The cheaper phosphoric acid was uesd to replace the phosphorus oxychloride, starch was used to replace pentaerythritol and water as solvent to synthesize a new low-cost intumescent flame retardant (IFR)—starch phosphate ethylenediamine salts. The structure of the IFR was characterized with infrared spectroscopy. The IFR was used to impart flame retardancy to the Epoxy self-leveling floor (Epoxy Resin, EP) to get the fireproof Epoxy self-leveling floor. The results of test showed that 20% of IFR limit oxygen index of EP/IFR composite reach 31.0%. The results show that flame retardant catalyze the pyrolysis of epoxy resin into charcoal; Vertical burning passed UL94 V-0 rating.

Poplar Wood Veneer Stain Retardant Study the Integration Process

2014 ◽  
Vol 548-549 ◽  
pp. 233-236
Author(s):  
De Jun Shen
Keyword(s):  
Flame Retardant ◽  
Process Optimization ◽  
Treatment Time ◽  
Orthogonal Experiment ◽  
Fire Retardant ◽  
Mixed Solution ◽  
Poplar Wood ◽  
Integration Process ◽  
Wood Veneer ◽  
Optimal Technology

In this study, the use of fire retardant, stain mixed solution using heat, pressure processing poplar veneer, the use of orthogonal experiment to determine the optimal technology mix rationale for poplar veneer: processing retardant, stain veneer process optimization flame retardant concentration of 20%; dye concentration of 0.5%; retardant treatment time 60min.

Synthesis of a Novel Halogen-Free Intumescent Flame Retardant Agent

2014 ◽  
Vol 1004-1005 ◽  
pp. 1017-1021
Author(s):  
Wang Wang Yu ◽  
Tao Huang ◽  
Wen Lei
Keyword(s):  
Thermal Stability ◽  
Fourier Transform ◽  
Flame Retardant ◽  
Raw Materials ◽  
Intumescent Flame Retardant ◽  
Char Yield ◽  
Yield Performance ◽  
Flame Retardant Properties ◽  
Halogen Free ◽  
Thermal Stability Of

A novel non-halogen intumescent flame retardant agent (IFR) was prepared by using phosphoric acid, pentaerythritol and aniline as raw materials. The structure and thermal stability of IFR were investigated by means of Fourier transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA). The flame retardant properties of IFR were investigated based on its inflation and char yield performance at 500°C. The results show that both the reaction time and mole ratio of raw materials have effects on the inflation and char yield of IFR.

Flame Retardancy of Lanthanum Phosphinate in Combination with Intumescen Flame-Retardant in Polypropylene

2012 ◽  
Vol 490-495 ◽  
pp. 3366-3369 ◽  
Author(s):  
Cong Liu
Keyword(s):  
Thermogravimetric Analysis ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Oxygen Index ◽  
Intumescent Flame Retardant ◽  
Limiting Oxygen Index ◽  
Ul 94 ◽  
Halogen Free

The flame-retardant of Lanthanum phenylphosphinate(LaPi) was prepared and its combination with intumescent flame retardant (IFR) in polypropylene (PP) was analysed using thermogravimetric analysis (TGA), limiting oxygen index (LOI) and the UL-94 test. Compared with using IFR alone, using the combination of LaPi and IFR gained the better classification in the UL 94 test thanks to the combination of the different mechanisms. When 20 wt% loading of flame retardant of LaPi and IFR, a halogen-free V-0 PP material was achieved with a LOI of 31%.

Preparation and Application of Colemanite Matrix Complex Flame Retardant

2016 ◽  
Vol 852 ◽  
pp. 670-676
Author(s):  
Jian Chu Zhong ◽  
Yun Xia Cui ◽  
Jun Zhu ◽  
Hong Zhi Wang
Keyword(s):  
Tensile Strength ◽  
Stearic Acid ◽  
Flame Retardant ◽  
Coupling Agent ◽  
Polyphosphoric Acid ◽  
Oxygen Index ◽  
Raw Materials ◽  
Limit Oxygen Index ◽  
Breaking Elongation ◽  
Ft Ir

In this paper, stearic acid, titanate coupling agent (NDZ-311) and silane coupling agent (KH-570) were selected as modifiers to modify colemanite powder and the resulted products were characterized by XRD and FT-IR. The results show that the surfaces of colemanite particles were effectively modified by stearic acid and coupling agents. The modified colemanite /EVA composites were then prepared and the effect of coupling agent addition on the mechanical properties and flame retardancy of EVA composites was investigated. The EVA composite doped with 40% of modified colemanite (coupling agent accounting for 1% of colemanite mass) exhibits a tensile strength of 9.80MPa, a breaking elongation of 696.5% and a limit oxygen index of 29.6%. The complex flame retardant was obtained by means of grafting amine polyphosphate onto the surface of colemanite using polyphosphoric acid (PPA) and laurylamine as raw materials. The obtained product was analyzed by XRD and FT-IR. The EVA composite doped with 40% of the complex flame retardant has a tensile strength of 8.57MPa, a breaking elongation of 671.3% and a limit oxygen index of 32.6%.

Influence of Intumescent Flame Retardant on Flammability and Tensile Behavior of Oil-Extended SEBS

2013 ◽  
Vol 749 ◽  
pp. 65-70
Author(s):  
Xiao Yan Li ◽  
Yan Chun Li ◽  
Chen Jie Shi ◽  
Si Si Cai ◽  
Xia Wang ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Flame Retardant ◽  
Oxygen Index ◽  
Intumescent Flame Retardant ◽  
Degradation Behavior ◽  
Char Layer ◽  
Micro Holes ◽  
Ul 94 ◽  
Limited Oxygen

A kind of intumescent flame retardant (IFR) were used for flame retarding of oil-extended hydrogenated styrene-butylenes-styrene (O-SEBS). The samples were systemically characterized by limited oxygen index (LOI), vertical burning test (UL-94), and scanning electron microscopy (SEM); Thermogravimetric (TG) analysis. The results showed that the IFR retardant can promote residual chars with multi-micro holes on the surface of SEBS to inhibit flame; with 45% IFR content, the LOI is 28.3 and flame retardant level is UL-94 classification of V-0, with no dripping. The morphological structures observed by SEM demonstrated that higher IFR content promote to form larger and compact films cover on bubbles of the intumescent char layer. The TG data revealed that the IFR could change the degradation behavior of the O-SEBS, enhance the thermal stability and increase the char residue, The tensile strength of all the O-SEBS/IFR blends had the tensile strength of more than 4MPa and the elongation of more than 850%.

A novel halogen-free intumescent flame retardant containing phosphorus and nitrogen and its application in polypropylene systems

2010 ◽  
Vol 16 (4) ◽  
pp. 261-271 ◽  
Author(s):  
Haiwang Xiang ◽  
Caiying Sun ◽  
Dawei Jiang ◽  
Qingbo Zhang ◽  
Chunmei Dong ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Intumescent Flame Retardant ◽  
Halogen Free

Flame retardancy and thermal properties of rigid polyurethane foam conjugated with a phosphorus–nitrogen halogen-free intumescent flame retardant

2020 ◽  
Vol 38 (3) ◽  
pp. 235-252
Author(s):  
Zhaojun Lin ◽  
Qianqiong Zhao ◽  
Ruilan Fan ◽  
Xiaoxue Yuan ◽  
Fuli Tian
Keyword(s):  
Thermal Properties ◽  
Thermogravimetric Analysis ◽  
Flame Retardant ◽  
Polyurethane Foam ◽  
Flame Retardancy ◽  
Oxygen Index ◽  
Carbon Layer ◽  
Limited Oxygen Index ◽  
Halogen Free ◽  
Limited Oxygen

In this work, a halogen-free intumescent combining phosphorus and nitrogen, flame-retardant 2-((2-hydroxyphenyl)(phenylamino)methyl5,5-dimethyl-1,3,2-dioxaphosphinane 2-oxide (HAPO) was successfully synthesized. It had been synthesized by reaction of 5,5-dimethyl-1,3, 2-dioxphosphinane 2-oxide with Schiff base. Its chemical structure was characterized in detail by Fourier transform infrared spectroscopy, 1H NMR, and 31P NMR spectrum. The flame-retardant polyurethanes were prepared with different loadings of HAPO. The thermal properties, flame retardancy and combustion behavior of the pure polyurethane foam thermosets were investigated by a series of measurements involving thermogravimetric analysis, limited oxygen index measurement, UL-94 vertical burning test, and cone calorimeter test. The results of the aforementioned tests indicated that HAPO can significantly improve the flame retardancy as well as smoke inhibition performance of polyurethane foam. Compared with the PU-Neat, the limited oxygen index of flame-retardant polyurethanes (15%) thermoset was increased from 19.5% to 23.8% and its UL-94 reached V-0 rating. In addition, the cone test results showed that the heat release rate, total heat release, rate of smoke release, and total smoke production of flame-retardant polyurethanes (10%) were decreased obvious sly. The apparent morphology of carbon residue was characterized by scanning electron microscopy, and results revealed that the modified polyurethane foam can form dense carbon layer after combustion. Thermogravimetric analysis results also indicated that the char amount of flame-retardant polyurethanes was obviously increased compared with PU-Neat. Based on the above analysis, we can draw the conclusions which in the condensed phase, phosphorus-based acids from the degradation of HAPO, this could promote the formation of continuous and dense phosphorus-rich carbon layer. In the gas phase, the flame-retardant mechanism was ascribed to the quenching effect of phosphorus-based radicals and diluting effect by non-flammable gases.

Preparation and Performance of a Novel Intumescent Flame Retardant

2011 ◽  
Vol 415-417 ◽  
pp. 424-428 ◽  
Author(s):  
Xiang Zhang ◽  
Fan Zhang
Keyword(s):  
Flame Retardant ◽  
Reaction Temperature ◽  
Flame Retardants ◽  
Raw Materials ◽  
Expansion Ratio ◽  
Intumescent Flame Retardant ◽  
Esterification Reaction ◽  
Phosphate Ester ◽  
Porous Structures ◽  
Char Layer

A novel phosphor-nitrogen intumescent flame retardant was prepared by dry method (without adding any solvent) using H3PO4, P2O5, pentaerythritol and melamine as raw materials. IR analysis found that the synthetic flame retardants had the P=O and P-O-C double-ring structures, the same to phosphate ester melamine salts. The reaction temperature, time and the ratio of raw materials had significant effect on the esterification reaction. The esterification reaction temperature should be controlled between 120°C and 130°C, and the reaction time should be 2.5 hours. The conversion rate of esterification could be improved by adding P2O5 to the reaction, and preferential mole rate between H3PO4 and P2O5 should be 2:1. Thermogravimetric analysis showed that the starting decomposition temperature of the flame retardant was 190°C, and at 700°C, the residual char rate was about 30%. The expansion ratio of the flame retardant after heated was about 30 to 50 times, SEM analysis found that the exteral surface of the expansion char layer was continuous and smooth, and the interior of the expansion char layer was uniformly porous structures, and the aperture size was about 150-200 μm, such porous structures could provide better adiabatic effect.

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