scholarly journals Green Synthesis of Biobased P-N Coating Via Mechanochemistry Strategy: For High-Eficiency Flame Retardant Finish of Cotton Fabric

2021 ◽  
Author(s):  
Junxiu Piao ◽  
Jinyong Ren ◽  
Yaofei Wang ◽  
Tingting Feng ◽  
Yaxuan Wang ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Cotton Fabric ◽  
High Efficiency ◽  
Fire Risk ◽  
Two Phase ◽  
Mechanism Model ◽  
Flammability Test ◽  
Peak Heat Release Rate ◽  
Flame Retardant Properties ◽  
Action Process

Abstract Cotton fabric is widely used in many occasions, but it is flammable with high fire risk. To meet the great fire safety demands of cotton fabric, a novel lignocellulosic-based P-N synergistic (LFPN) flame-retardant coating with high efficiency and environment friendly was developed via mechanochemistry strategy in the aqueous phase. The characterisation results showed the stable P-O-C bond formed to bind both lignocellulosic fibre and ammonium polyphosphate (APP). Meanwhile, LFPN has an excellent dispersion in water with a nanometer-scale enveloping rod structure. The cotton fabric treated by the LFPN coating showed outstanding flame-retardant properties, the peak heat release rate (PHRR) was reduced by 77% and the residue mass was increased by 259% compared with control cotton fabric. And there was a self-extinction phenomenon during the flammability test of flame retardant cotton. Based on the analysis of the combustion and pyrolysis process, a gas-condensed two-phase flame retardant mechanism model was proposed, which could be used to explain the action process of LFPN for cotton fabric during combustion.

scholarly journals Preparation of High-Efficiency Flame-Retardant and Superhydrophobic Cotton Fabric by a Multi-Step Dipping

Coatings ◽  
2021 ◽  
Vol 11 (10) ◽  
pp. 1147
Author(s):  
Jingda Huang ◽  
Mengmeng Li ◽  
Changying Ren ◽  
Wentao Huang ◽  
Qiang Wu ◽  
...  
Keyword(s):  
Contact Angle ◽  
Flame Retardant ◽  
Composite Coating ◽  
Cotton Fabric ◽  
Cellulose Nanocrystals ◽  
Abrasion Resistance ◽  
High Efficiency ◽  
Oxygen Index ◽  
Water Contact ◽  
Flame Retardant Properties

Cotton fabric, as an important material, is suffering from some defects such as flammability, easy pollution and so on; therefore, it is important to make a flame-retardant and superhydrophobic modification on cotton fabric. In this study, we demonstrated a preparation of high-efficiency flame-retardant and superhydrophobic cotton fabric with double coated construction by a simple multi-step dipping. First, the fabric was immersed in branched poly(ethylenimine) (BPEI) and ammonium polyphosphate (APP) water dispersions successively, and then immersed in polydimethylsiloxane (PDMS)/cellulose nanocrystals (CNC)-SiO2 toluene dispersion to form a BPEI/APP/PDMS/CNC-SiO2 (BAPC) composite coating on the surface of the cotton fabric. Here, the hydrophobic modified CNC-SiO2 rods were used to construct the superhydrophobic layer and the BPEI/APP mixture was used as the flame-retardant layer, as well as SiO2 particles which could further improve the flame-retardant effect. PDMS was mainly used as an adhesive between the BPEI/APP layer and the CNC-SiO2 layer. The resulting cotton fabric shows outstanding flame-retardant properties, in that the value of oxygen index meter (LOI) reaches 69.8, as well as excellent superhydrophobicity, in that the water contact angle (WCA) is up to 156.6°. Meanwhile, there is a good abrasion resistance, the superhydrophobicity is not lost until the 16th abrasion cycles and the flame retardant retains well, even after 100 abrasion cycles in an automatic vertical flammability cabinet under a pressure of 8.8 kPa.

SEBS-based thermoplastic elastomers containing aluminum hypophosphite and melamine cyanurate: Thermal degradation, flame retardancy, and mechanical properties

2019 ◽  
Vol 37 (2) ◽  
pp. 137-154 ◽  
Author(s):  
Xi Cheng ◽  
Jianming Wu ◽  
Yulin Li ◽  
Chenguang Yao ◽  
Guisheng Yang
Keyword(s):  
Flame Retardant ◽  
Thermoplastic Elastomers ◽  
Char Residue ◽  
Melamine Cyanurate ◽  
Char Layer ◽  
Phenylene Oxide ◽  
Peak Heat Release Rate ◽  
Ul 94 ◽  
Flame Retardant Properties ◽  
Aluminum Hypophosphite

Aluminum hypophosphite combined with melamine cyanurate and poly(phenylene oxide) was applied to flame-retard TPE-S system (blends of SEBS and polyolefin). The flame-retardant properties of the TPE-S/AHP/MCA/PPO were investigated by LOI and vertical burning test (UL-94). The results indicated that TPE-S containing 16 wt% AHP, 20 wt% MCA, and 10 wt% PPO reached a V-0 rating in the UL-94 test, and its LOI value was 28.2%. It performed well in the cone calorimeter (reduction in peak heat release rate from 2001 to 494 kW m−2). Thermogravimetric-Fourier transform infrared spectroscopy tests showed that AHP and MCA acted in gaseous phase, while AHP and PPO helped to form char residue. The SEM graphs demonstrated that continuous and compact films cover bubbles of the char layer in TPE-S/AHP/MCA/PPO. The proposed flame-retardant mechanisms of such systems were summarized.

Layer-by-layer Assembly Polyethylenimine/phytic Acid Coating With Gradient Structure for High-Efficiency and Durable Flame Retardant Cotton Fabric With Good Physical and Mechanical Properties

2021 ◽  
Author(s):  
Xinhua Liu ◽  
Hailong Liu ◽  
Yinchun Fang
Keyword(s):  
Physical Properties ◽  
Flame Retardant ◽  
Cotton Fabric ◽  
High Efficiency ◽  
Cotton Fabrics ◽  
Gradient Structure ◽  
Layer By Layer ◽  
Assembly Method ◽  
Lbl Assembly ◽  
Coated Cotton

Abstract In this study, intumescent flame retardant coating of polyethylenimine/phytic acid (PEI/PA) with gradient structure was constructed on cotton fabric through facile layer-by-layer (LBL) assembly method. The LOI value of coated cotton fabric reached over 40% indicating excellent flame retardancy. Reasonable controlling the LBL assembly process of PEI/PA coating brought less influence to the physical properties of cotton fabrics. And the coated cotton fabric revealed good flame retardant washing durability. Thermogravimetric analysis results of coated cotton fabrics showed that PEI/PA flame retardant coating changed the thermal decomposition process and promoted char formation revealing the obviously condensed phase flame retardant action. SEM images of char residues revealed that PEI/PA flame retardant coating promoted to form the intumescent flame retardant (IFR) char layer showing obvious IFR action. This research provides novel strategy for the development of high-efficiency flame retardant cotton fabric with good durability and physical properties using simple LBL assembly method.

Improvements on Flame Retardant Properties of PET/Montmorillonite Nanocomposite Caused by Polyborosiloxane

2007 ◽  
Vol 1007 ◽  
Author(s):  
Yue Huo ◽  
Qinguo Fan ◽  
Nicholas A Dembsey ◽  
Prabir K Patra
Keyword(s):  
Flame Retardant ◽  
Mass Loss Rate ◽  
Layered Silicate ◽  
High Specific Surface Area ◽  
Processing Temperature ◽  
Peak Heat Release Rate ◽  
Flame Retardant Properties ◽  
Fire Properties ◽  
Flame Retardation ◽  
Mmt Clay

ABSTRACTA phenyl-containing highly cross linked polyborosiloxane (PBSiO) was synthesized as a flame retardant for polyethylene terephthalate (PET). We coated montmorillonite (MMT) clay, a very high aspect ratio and high specific surface area layered silicate with synthesized PBSiO to introduce synergism in flame retardation to the PET nanocomposite film that retained thermal and mechanical properties. This PBSiO has high thermal stability at the processing temperature (270-285° C) of PET and acts as a compatibilizer between PET and clay that are otherwise incompatible. During burning, the flame retardant PET containing PBSiO and MMT forms a protective borosilicatecarbonaceous intumescent char on the surface. Cone calorimeter tests were performed to evaluate key fire properties of the PET/PBSiO/MMT. The peak heat release rate (PHRR) of PET that contains 5 wt% PBSiO and 2.5 wt% MMT was reduced by 60% and similar trend in the reduction of mass loss rate of the nanocomposite was observed.

Flame retardant properties of triazine phosphonates derivative with cotton fabric

2011 ◽  
Vol 12 (3) ◽  
pp. 334-339 ◽  
Author(s):  
SeChin Chang ◽  
Brian Condon ◽  
Elena Graves ◽  
Minori Uchimiya ◽  
Chanel Fortier ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Cotton Fabric ◽  
Flame Retardant Properties

An eco-friendly intumescent flame retardant with high efficiency and durability for cotton fabric

Cellulose ◽  
2018 ◽  
Vol 25 (9) ◽  
pp. 5389-5404 ◽  
Author(s):  
Yi Lu ◽  
Yaling Jia ◽  
Guangxian Zhang ◽  
Fengxiu Zhang
Keyword(s):  
Flame Retardant ◽  
Cotton Fabric ◽  
High Efficiency ◽  
Intumescent Flame Retardant

Study on Flame-Retardant Properties of Flame Retardant Asphalt Mixture

2013 ◽  
Vol 438-439 ◽  
pp. 387-390 ◽  
Author(s):  
Da Liang Liu ◽  
Yi Zhong Yan ◽  
Yun Yong Huang ◽  
Jia Liang Yao ◽  
Jian Bo Yuan
Keyword(s):  
Heat Release ◽  
Flame Retardant ◽  
Heat Release Rate ◽  
Release Rate ◽  
Flame Retardants ◽  
Asphalt Mixture ◽  
Modified Asphalt ◽  
Peak Heat Release Rate ◽  
Flame Retardant Properties ◽  
Sbs Modified Asphalt

Flame retardants modified asphalt with SBS flame retardant SMA hybrid material was prepared, flame retardant performances of SMA mixture was studied by the cone calorimeter. The results show that adding 12% flame retardant with SBS modified asphalt in preparation of flame retardant SMA mixture, the peak heat release rate values than the non-flame retardant asphalt mixture decreased by 4.02 kW/m2, and the heat release rate values were significantly reduced, the total heat and the amount of smoke of flame retardant asphalt mixture released less than the non-flame retardant asphalt mixture.

scholarly journals Synthesis of a phosphoramidate flame retardant and its flame retardancy on cotton fabrics

e-Polymers ◽  
2020 ◽  
Vol 20 (1) ◽  
pp. 550-560
Author(s):  
Huaifang Wang ◽  
Yingli Cai ◽  
Zhiming Jiang ◽  
Shengnan Guo ◽  
Ping Zhu
Keyword(s):  
Heat Release ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Cotton Fabrics ◽  
Limiting Oxygen Index ◽  
Flammability Test ◽  
Peak Heat Release Rate ◽  
Structure Surface ◽  
Ft Ir ◽  
Butanetetracarboxylic Acid

AbstractA phosphoramidate flame retardant (dimethyl N,N-bis(2-hydroxyletheyl)phosphoramidate, DMBHP) was synthesized and applied to cotton fabrics for enhancing the flame retardancy. The structure of DMBHP was characterized by FT-IR and NMR. The flame retardancy and combustion behavior of the treated cotton fabrics were evaluated using the vertical flammability test (VFT), limiting oxygen index (LOI), and the cone calorimetric test. Moreover, to further analyze the flame retardant action of DMBHP in cotton fabrics, thermal degradability of the treated fabrics, as well as the chemical structure, surface morphology, and element contents of the char residue of the DMBHP-treated fabrics were also evaluated. The results show that, after treating with DMBHP, the cotton fabrics acquired a LOI value from 18.1 to 31.1 with the concentration increasing to 30% and self-extinguished in VFT tests when treated with up to 15% DMBHP. Besides, the total heat release and the peak heat release rate of DMBHP (30%)-treated fabric decreased obviously compared with the pure cotton along with more residue retained. TG, SEM, and EDS results of treated cotton fabric and the corresponding residue after burning showed that DMBHP has the capability of enhancing char formation. In addition, DMBHP will confer cotton fabrics a certain durability against washing with the help of 1,2,3,4-butanetetracarboxylic acid (BTCA) and citric acid (CA).

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