Preparation and Properties of Knitted Coated Fabric with Flame Retardancy

2010 ◽  
Vol 156-157 ◽  
pp. 1313-1317
Author(s):  
Jian Feng Di ◽  
Jie Xu ◽  
Wen Qin Du
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Orthogonal Experiment ◽  
Woven Fabric ◽  
Knitted Fabric ◽  
Coating Process ◽  
Coated Fabric ◽  
Washing Durability ◽  
Variable Function ◽  
Coated Fabrics

Due to its excellent performance, special style and variable function, coated fabric is used more and more widely by the public. At present, there are lots of coated fabrics, most of which are made from woven fabric, knits are rarely used. The reason is knitted fabric has good elasticity and large deformation. Therefore, it is difficult to control the tension in the direct coating process. In this paper, the transfer coating process is adopted to solve this problem. First of all, knitted fabric was finished by padding flame retardant, then coated with polyurethane(PU) which includes flame retardant. The optimum transfer coating process is obtained by orthogonal experiment. Knitted coated fabrics with flame retardancy are manufactured by the optimum coating process. Washing durability of coated fabric was tested through the washing test. The results showed that the coated fabric has good flame retardancy and the washing durability.

Thermal resistance of polyurethane-coated knitted fabrics before and after weathering

2014 ◽  
Vol 84 (19) ◽  
pp. 2015-2025 ◽  
Author(s):  
Vesna Marija Potočić Matković ◽  
Ivana Salopek Čubrić ◽  
Zenun Skenderi
Keyword(s):  
Thermal Resistance ◽  
Thermal Protection ◽  
Winter Season ◽  
Outdoor Exposure ◽  
Woven Fabrics ◽  
Knitted Fabric ◽  
Knitted Fabrics ◽  
Coated Fabric ◽  
Before And After ◽  
Coated Fabrics

Polyurethane-coated knitted fabrics are of interest because they exhibit several positive properties, they are more stretchable, elastic and comfortable than coated woven fabrics and yet they are little studied. Information of weather durability, as well as thermal properties, is essential to ensure thermal protection for textile materials intended for outdoor use. In the presented research, a series of coated knitted fabrics for protective clothing were developed and exposed to weathering in summer and winter seasons. After three months of outdoor exposure, thermal resistance of all the tested materials decreased by 13% after the summer season and 25% after the winter season. A very good correlation of knitted fabric mass per unit area and thermal resistance of knitted fabric, coated fabric and aged coated fabric occurred. The studied materials experienced a partial degradation of the polyurethane layer, which is not related to the deterioration of the knitted substrate. The presented investigation of thermal resistance of coated fabrics and their dependence on the knitted substrate, as well as the influence of environmental conditions, allows the improvement of coated fabrics with the aim of better thermal protection.

scholarly journals High Flame Retardant Performance of SiO2-TiO2 Sol Coated on Polyester/Cotton Fabrics

2021 ◽  
Vol 37 (1) ◽  
Author(s):  
Pham Thi Thu Trang ◽  
Le Ha Giang ◽  
Nguyen Ba Manh ◽  
Trinh Duc Cong ◽  
Ngo Trinh Tung ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Titanium Chloride ◽  
Coating Materials ◽  
Sem Image ◽  
Coated Fabric ◽  
Tio2 Sol ◽  
Coating Method ◽  
Coated Fabrics ◽  
Fabric Surface

SiO2 and TiO2 sols were successfully synthesized by using sodium silicate and titanium chloride as Si and Ti sources. SiO2-TiO2 sol coated polyester/cotton fabric was fabricated by deep-coating method and using SiO2, TiO2 sols as coating materials. SiO2-TiO2 coated fabric were characterized by XRD, FTIR, TGA, SEM and EDX. From SEM image, it showed the SiO2, TiO2 particles of 20-30 nm which well deposited on fabric surface. TGA result revealed the significant improvement of thermal resistance and stability of SiO2-TiO2 coated fabric as compared to those of uncoated fabric. Flame retardant performance of SiO2-TiO2 coated fabrics was much better than that of uncoated fabric. Thus, SiO2-TiO2 coated fabric SiO2-TiO2 content of 26wt% showed the UL-94 classification of V-0 and LOI value of 30.3 were obtained. Moreover, mechanical property (tear strength) of SiO2-TiO2 coated fabrics were also improved.

Design and characterization of ramie fiber-reinforced composites with flame retardant surface layer including iron oxide and expandable graphite

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Xiaofei Yan ◽  
Jie Fang ◽  
Chenkai Zhu ◽  
Jiawei Li ◽  
Dongmin Qi
Keyword(s):  
Shear Strength ◽  
Surface Layer ◽  
Iron Oxide ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Interlaminar Shear Strength ◽  
Woven Fabric ◽  
Expandable Graphite ◽  
Ramie Fiber ◽  
Interlaminar Shear

Abstract The ramie plain-woven fabric-reinforced epoxy composites with iron oxide (IO) powders and expandable graphite (EG) particles were fabricated by the hand lay-up and vacuum bagging pressing. The flame retardant layers with IO powders and EG particles have been designed on the surface of the composite structure, to improve the composites flame retardancy. The flame retardancy property of the composites was discussed from the limited oxide index (LOI), vertical burning test, and cone calorimeter test, while the flexural property and interlaminar shear strength of the composites were also investigated through the three-point flexural tests, respectively. It was found that the flame retardancy property of the composites, which contains both IO powders and EG particles, can be greatly improved. However, IO powders and EG particles have a negative effect on flexural properties and interlaminar shear strength of the composites. Also, prepreg with IO powders or EG particles which laminated on the surface layer of the composite with different orders would result in different performances.

scholarly journals Synthesis of a Novel Linear α, ω-Di (Chloro Phosphoramide) Polydimethylsiloxane and Its Applications in Improving Flame-Retardant and Water-Repellent Properties of Cotton Fabrics

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1829 ◽  
Author(s):  
Chaohong Dong ◽  
Ling Sun ◽  
Xingbo Ma ◽  
Zhou Lu ◽  
Pengshuang He ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Flame Retardancy ◽  
Free Water ◽  
Water Repellency ◽  
Cotton Fabrics ◽  
Water Repellent ◽  
Cone Calorimetry ◽  
Limiting Oxygen Index ◽  
Washing Durability ◽  
Char Length

A novel linear α, ω-di (chloro phosphoramide)-terminated polydimethylsiloxane (CPN-PDMS) was successfully synthesized and utilized as a formaldehyde-free water-repellent and flame-retardant for cotton fabrics. The flame retardancy of treated cotton fabrics was estimated by limiting oxygen index (LOI) test, vertical flammability test, and cone calorimetry test. The cotton fabrics treated with 350 g/L CPN-PDMS obtained excellent flame retardancy with an LOI value of 30.6% and the char length was only 4.3 cm. Combustion residues were studied using Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM) and energy dispersive spectrometry (EDS) analysis. Results show that CPN-PDMS can effectively enhance water repellency and fire resistance of cotton fabrics. Furthermore, the breaking strength test and the whiteness test strongly prove that the tensile strength and whiteness of the treated cotton fabrics were slightly lower than that of the pure cotton fabrics. The wash stability test showed that after 30 laundering cycles, the treated cotton fabrics still had an LOI value of 28.5% and a water-repellent effect of grade 80, indicating that CPN-PDMS was an excellent washing durability additive. In summary, these property enhancements of treated cotton fabrics were attributed to the synergistic effect of silicon-phosphorus-nitrogen elements in CPN-PDMS.

Intumescent flame retardant finishing of polyester fabrics via the layer-by-layer assembly technique

2017 ◽  
Vol 29 (1) ◽  
pp. 96-105 ◽  
Author(s):  
Warunee Wattanatanom ◽  
Sireerat Churuchinda ◽  
Pranut Potiyaraj
Keyword(s):  
Thermal Properties ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Intumescent Flame Retardant ◽  
Layer By Layer ◽  
Polyester Fabrics ◽  
Content Type ◽  
Lbl Assembly ◽  
Assembly Technique ◽  
Coated Fabrics

Purpose The purpose of this paper is to investigate the potential use of the layer-by-layer (LbL) assembly as an intumescent flame retardant for polyester, cotton and their blended fabrics. Design/methodology/approach In this study, polyester (PET), cotton and their blends were applied with the flame retardant coating via the LbL assembly technique. The flame retardancy, melt dripping, thermal properties and morphology of coated polyester fabrics were then examined. Findings The scanning electron micrograph of uncoated and coated fabrics revealed that the LbL assembly coating on the fabric surface was successful. The assessment of the flame retardancy and thermal properties of the coated fabrics showed that the after-flame time and melt dripping during the vertical burning test decreased. The char residue at temperatures ranging from 450 to 800°C during thermogravimetric analysis was enhanced as compared with the uncoated fabric. Furthermore, the morphology of the char residual of coated fabrics was rougher and bulkier than the uncoated fabrics, suggesting the typical behavior of intumescence. Social implications The LbL technique generally uses much fewer chemicals, thus making this flame retardant finishing much more environmentally friendly. It is also expected that these fabrics will show better touch characteristics. These fabrics may be tested for their comfort compared to that of conventional coating to enable their use on an industrial scale. Originality/value This work demonstrated the ability to apply an effective intumescent coating on polyester, cotton and blend fabric. In order to maintain fabric handle property, the Lbl coating technique is also employed.

scholarly journals Influence of fluorescent pigments on the spectral characteristics of luminous coated fabrics

2021 ◽  
Author(s):  
Jing Li ◽  
Yanan Zhu ◽  
Mingqiao Ge
Keyword(s):  
Emission Spectrum ◽  
Spectral Characteristics ◽  
Woven Fabric ◽  
Luminescent Materials ◽  
Light Emitting ◽  
Fluorescent Pigment ◽  
Coated Fabric ◽  
Coated Fabrics ◽  
Green Fluorescent ◽  
Color Rendering

Abstract In recent years, luminous coated fabrics based on SrAl2O4: Eu2+, Dy3+ luminescent materials have attracted more attention. However, due to the single emission color of SrAl2O4: Eu2+, Dy3+ luminescent materials, the application of prepared coated fabrics has certain liminations. Therefore, at present, there is a need to develop a kind of luminous coated fabric which has the capability of emitting multiple colors of light. In this work, fluorescent pigments and SrAl2O4: Eu2+, Dy3+ luminescent materials were added to a coating slurry and uniformly coated over a woven fabric substrate. The effects of adding fluorescent pigments on the spectral characteristics of luminous coated fabrics were evaluated. The blue fluorescent pigment causes a significant blue shift in the emission spectrum of the blue light-emitting coated fabric, whereas the emission spectra of the orange and red light-emitting coated fabrics exhibit a significant red shift. The yellow-green fluorescent pigments significantly affect the coated fabric. The emission spectrum shows no evident change and is similar to the emission spectrum of white (without any fluorescent pigment) luminescent coated fabric. The afterglow brightness of the colored luminous coated fabrics decreases exponentially with time. Adding blue fluorescent pigments has a greater impact on the brightness of the coated fabrics. The initial brightness is lower and the afterglow brightness loss is higher when using yellow-green fluorescence. The pigment has little effect on the brightness loss of coated fabrics, and the initial brightness of the coated fabric increases when adding yellow-green fluorescent pigments. Fluorescent pigments result in relatively low color purity for each colored coated fabric. However, the color rendering index is high, and the color rendering performance for the light source is excellent.

Study on Flame Retardant and Anti-UV Finishing Technology of Cotton Knitted Fabric

2011 ◽  
Vol 694 ◽  
pp. 820-823 ◽  
Author(s):  
Jian Feng Di ◽  
Jie Xu ◽  
Wen Qin Du
Keyword(s):  
Titanium Dioxide ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
Knitted Fabric ◽  
Nano Tio2 ◽  
Coating Agent ◽  
Coating Technique ◽  
Cotton Knitted Fabric ◽  
Nano Titanium Dioxide

The coating agent was prepared by adding nano-titanium dioxide(nano-Tio2) and flame retardant to solvent-based polyurethane(PU),then applied to cotton knitted fabric which was finished by padding flame retardant through transfer coating technique, so a multifunctional coating fabric with flame retardancy and anti-UV property was manufactured. Discussing the changes in flame retardancy and anti-UV property with the increase in addition of flame retardant and nano-titanium dioxide. The results showed that the fabric has good flame retardancy and anti-UV property.

A superhydrophobic and flame-retardant cotton fabric fabricated by an eco-friendly assembling method

2021 ◽  
pp. 004051752110226
Author(s):  
Xiang Liu ◽  
Junli Chen ◽  
Longxin Gu ◽  
Luc T Nguyen ◽  
Jiqiang Cao ◽  
...  
Keyword(s):  
Flame Retardant ◽  
Cotton Fabric ◽  
Flame Retardancy ◽  
Dip Coating ◽  
Sliding Angle ◽  
Low Surface Energy ◽  
Coated Fabric ◽  
Halogen Free ◽  
Textile Fabric ◽  
Limited Oxygen

A novel eco-friendly and durable superhydrophobic and flame-retardant cotton fabric with fluorine-free, halogen-free was prepared via step-by-step dip-coating and spraying technology. At first, common cotton fabric was impregnated in the flame-retardant ethoxysilane-terminated phosphate polyurethane. Afterwards, methanol mixture containing silica nanoparticles, methyl triethoxysilane, and dihydroxy-terminated polydimethylsiloxane was sprayed on the surface of the cotton fabric. Finally, a flame-retardant cotton fabric with micro-nano rough surface and low surface energy was formed. The resulting superhydrophobic and flame-retardant cotton fabric exhibited superamphiphobicity with the contact angle and sliding angle of 160° and 6°, respectively, while flame retardancy with limited oxygen index of 28.1%. and flame self-extinguishing. Furthermore, this superhydrophobic and flame-retardant cotton fabric showed robust superhydrophobicity and flame-retardancy after undergoing 1000 cycles of abrasion, 60 min of ultrasonic washing and 50 standard machine washing cycles, in sequence, indicating its potential as a multifunctional protective textile fabric. Additionally, the method proposed in this study can effectively solve durability and environmental problems currently faced by the coated fabric with superhydrophobicity and flame-retardancy.

scholarly journals A critical study of the effects of flame retardancy on different knit fabrics

2021 ◽  
Vol 7 (3) ◽  
pp. 105-109
Author(s):  
Sheikh Sha Alam
Keyword(s):  
Heat Release ◽  
Flame Retardant ◽  
Flame Retardancy ◽  
High Performance ◽  
Ignition Time ◽  
Critical Study ◽  
Durability Test ◽  
Technical Textiles ◽  
Knit Fabrics ◽  
Washing Durability

A novel flame retardant especially Pekoflam HFC was synthesized to improve the flame retardancy of fabric. Pekoflam HFC is especially suitable for flame retardant back coatings of synthetic fibre based home textiles and high-performance technical textiles. The flame retardancy of the samples was characterized by the spray method and the vertical burning test. The results indicated that the flame retardant had excellent flame retardancy and durability for cellulosic fabrics. The cotton knit fabric treated with Pekoflam HFC obtained the optimum flame retardancy with the decreased char length. Combustion behaviors of treated cotton fabric were tested by manual observation. After treatment, it found that the ignition time increased, and the values of total heat release, heat release rate and mass loss decreased. The strength and durability of treated fabric were studied by tear force test and washing durability test, respectively.

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