Study on Preparation of PA6 / PDMS Blended Fibers and Fabric Properties

2020 ◽  
Vol 1003 ◽  
pp. 219-227
Author(s):  
Dong Sun ◽  
Guang Li
Keyword(s):  
Contact Angle ◽  
Melt Spinning ◽  
Good Resistance ◽  
Stain Resistance ◽  
Melting Characteristics ◽  
Fabric Surface

PA6 fibers and fabric properties were studied by adding PDMS, and PA6 / PDMS blend fibers were prepared by melt spinning. The experiment found that the addition of PDMS can significantly promote the rheology of the PET / PDMS blend melt. DSC tests show that the addition of PDMS has basically no effect on its crystallization and melting characteristics. With the increase of PDMS content, the contact angle of water on the blended fabric surface increased. KES-FB was used to evaluate fabrics made from PA6 / PDMS blended fibers. It was found that with the increase of PDMS content, the softness and elasticity of the fabrics were improved, and the stain resistance experiments showed that the modified fabrics had good resistance dirty performance.

Evaluation of the contact angle in rapid solidification by melt spinning

1996 ◽  
Vol 211 (1-2) ◽  
pp. 82-86 ◽  
Author(s):  
Z. Rivlin ◽  
H.G. Jiang ◽  
M.A. Gibson ◽  
N. Froumin ◽  
J. Baram
Keyword(s):  
Contact Angle ◽  
Rapid Solidification ◽  
Melt Spinning

scholarly journals Improving the technology of repair painting with powder-coated paints in agro-industrial complex

2021 ◽  
Vol 285 ◽  
pp. 07012
Author(s):  
Andrey Bodrov ◽  
Anton Panichkin ◽  
Denis Lomakin ◽  
Andrew Simushkin
Keyword(s):  
Contact Angle ◽  
Roughness Parameter ◽  
Corrosion Damage ◽  
Industrial Complex ◽  
Powder Coatings ◽  
Chemical Methods ◽  
Painted Surface ◽  
Stain Resistance ◽  
Separation Force ◽  
Contact Angle Of Wetting

The article presents the results of studies to determine the dependence of the degree of adhesion and the separation force of the powder coatings layer on the roughness parameter of the substrate, as well as the contact angle of wetting for various methods of preparing the painted surface by chemical methods. In addition, practical tests for stain resistance were carried out, which showed the absence of corrosion damage, as well as a slight change in color, gloss of coatings, chalking and dirt retention on the studied coating samples.

Design and fabrication of polydopamine based superhydrophobic fabrics for efficient oil-water separation

Soft Matter ◽  
2021 ◽  
Author(s):  
Jixi Zhang ◽  
Ligui Zhang ◽  
Xiao Gong
Keyword(s):  
Contact Angle ◽  
Water Contact Angle ◽  
Sol Gel ◽  
High Water ◽  
Water Contact ◽  
Water Separation ◽  
Oil Water Separation ◽  
Oil Water ◽  
Fabric Surface

In this work, we prepare a PDMS-SiO2-PDA@fabric with high water contact angle (WCA=155o). Combining dopamine self-polymerization and sol-gel method, SiO2 is in situ grown on a PDA-modified fabric surface to...

scholarly journals Digital Sublimation Printing on Knitted Polyamide 6.6 Fabric Treated with Non-Thermal Plasma

Polymers ◽  
2021 ◽  
Vol 13 (12) ◽  
pp. 1969
Author(s):  
Marcia Cristina Silva ◽  
Gilberto Petraconi ◽  
Ricardo Rodrigues Ramos Cecci ◽  
Adriano Alves Passos ◽  
Wanderson Ferraz do Valle ◽  
...  
Keyword(s):  
Contact Angle ◽  
Functional Groups ◽  
Thermal Plasma ◽  
Atmospheric Pressure ◽  
Colour Change ◽  
Wash Fastness ◽  
Colour Strength ◽  
Non Thermal Plasma ◽  
Polyamide 6.6 ◽  
Fabric Surface

The garment industry demands stamping processes that are increasingly more agile and less damaging to the environment. In this scenario, digital printing, with the sublimation transfer printing technique, presents itself as a viable option for synthetic textile substrates. Among the synthetic fibres, polyamide (P.A.) fibres stand out, as they are light, soft, durable, and boast moderate sweat absorption; however, before sublimation, superficial treatment is necessary in order to present good results such as withstanding washing and maintaining colour intensity. This study addresses the surface modification of the PA6.6 textile substrate by activating non-thermal plasma at atmospheric pressure to receive dye through the sublimation method with dispersed dye. The knitted PA6.6 fabric surface treatment was performed with plasma application at atmospheric pressure using air in the Plasmatreater AS400 equipment. The sublimation transfer effects were evaluated by wash fastness and colourimetric tests. To assess the wettability effect of the control and treated samples, a contact angle test was carried out on PA6.6 samples. Fourier transform infrared spectroscopy (FTIR) proved the changes in chemical functional groups in the fibres. The results showed a decrease in the contact angle of the textile surface, 4–5 grayscale results for colour change and transfer for washing, and an increase in colour strength. In the FTIR tests, there is an increase in the transmittance value of aromatic, carboxylic groups (C=O, 580 cm−1), amides (N=H, 1630 cm−1), and methyl groups (CH 1369 to 1463 cm−1) as well as the presence of new functional groups in the 3064 cm−1 and 2860 cm−1 bands. These conditions allowed sublimation in the knitted PA6.6 fabric and showed increased colour strength and good wash fastness.

scholarly journals Preparation of Fluoroalkyl-Acrylate-Modified Polysiloxane Nanocomposite and Its Surface Properties as a Superhydrophobic Coating Material

Coatings ◽  
2019 ◽  
Vol 9 (10) ◽  
pp. 616
Author(s):  
Fuquan Deng ◽  
Hua Jin ◽  
Wei Xu
Keyword(s):  
Contact Angle ◽  
Surface Composition ◽  
Polymer Surface ◽  
Covalent Bond ◽  
Rolling Contact ◽  
Static Contact Angle ◽  
Infrared Spectrometry ◽  
Superhydrophobic Coating ◽  
Static Contact ◽  
Fabric Surface

Based on the as-synthesized modified polysiloxane containing pendant long-chain fluoroalkyl and silanoxy (PFAS) in our previous work, an in situ condensation reaction with silica sol was carried out to prepare a fluoroacrylate-modified polysiloxane nanocomposite. The polysiloxane nanocomposite was then applied as a fabric finish to construct a superhydrophobic coating. The structural and thermal properties of the polymer, surface morphology, surface composition and hydrophobicity of the fabric coatings, polymer fine microstructure, and performance properties of the treated fabrics were researched using infrared spectrometry, thermogravimetric analysis, scanning electron microscopy, atomic force microscopy, X-ray photoelectron spectrometry, and measurement of the contact angle, whiteness, and softness. The characterization results showed that the product had good thermal stability. The static contact angle and rolling contact angle on the finished fabric surface were 163.5° and 7°, respectively. The whiteness and softness were basically similar to those of untreated fabrics. Moreover, due to the stable covalent bond between the silica particles and the polymers, the static contact angle remained 152.3° after 15 cycles of washing, which indicates that it has good water resistance.

Effect of nano-SiO2 particles on the carbon fabric/resin friction materials by microwave-hydrothermal treatment

2017 ◽  
Vol 52 (2) ◽  
pp. 245-252 ◽  
Author(s):  
Jie Fei ◽  
Dan Luo ◽  
Hongkun Wang ◽  
Hejun Li ◽  
Jianfeng Huang ◽  
...  
Keyword(s):  
Contact Angle ◽  
Testing Machine ◽  
Hydrothermal Condition ◽  
Treatment Temperature ◽  
Friction Reduction ◽  
Carbon Fabric ◽  
Hydrothermal Temperature ◽  
Friction Materials ◽  
Microwave Hydrothermal ◽  
Fabric Surface

Nano-SiO2 was grafted onto the carbon fabric surface under microwave-hydrothermal condition to improve the tribological properties of carbon fabric/resin friction materials with different treatment temperature. The carbon fibers and prepared samples were characterized by the Fourier transform infrared spectrophotometer, contact angle instrument, energy dispersive spectroscopy, universal material testing machine and field emission scanning electron microscopy. The tribological behaviors of the carbon fabric/resin friction materials were evaluated by a friction tester. The results indicated that nano-SiO2 particles were successfully grafted onto carbon fabric surface under microwave-hydrothermal condition, especially at 200℃ (contact angle was almost close to 0°), which obviously improved the hydrophilicity of carbon fabric surface. The wear rate of carbon fabric/resin friction materials with microwave-hydrothermal temperature of 200℃ reduced by 81.4%, ranging from 4.3 × 10−5 mm3J−1 to 0.8 × 10−5 mm3J−1. It could effectively enhance the bonding strength of carbon fabric and resin, which improved the friction-reduction and anti-wear abilities of the friction materials.

HYDROPHOBIC SURFACE MODIFICATION OF SILK FABRIC USING PLASMA-POLYMERIZED HMDSO

2018 ◽  
Vol 25 (02) ◽  
pp. 1850060 ◽  
Author(s):  
K. VINISHA RANI ◽  
NISHA CHANDWANI ◽  
PURVI KIKANI ◽  
S. K. NEMA ◽  
ARUN KUMAR SARMA ◽  
...  
Keyword(s):  
Contact Angle ◽  
Water Droplet ◽  
Chemical Vapor ◽  
Silk Fabric ◽  
Hydrophobic Properties ◽  
Water Contact ◽  
Coating Time ◽  
Silk Fabrics ◽  
Coated Fabrics ◽  
Fabric Surface

In this work, we study the hydrophobic properties of silk fabrics by deposition of plasma-polymerized (pp) hexamethyldisiloxane (HMDSO) using low-pressure plasma-enhanced chemical vapor deposition. Recently, hydrophobic properties are under active research in textile industry. The effects of coating time and power on the HMDSO-coated silk fabrics are investigated. Water contact angle of pp-HMDSO-coated silk fabric surface is measured as a function of power and coating time. Fabric surface shows an enhancement in hydrophobicity after coating. Attenuated total reflectance-Fourier transform infrared spectroscopy reveals the surface chemistry, and scanning electron microscopy shows the surface morphology of the uncoated and HMDSO-coated fabrics, respectively. In the case of uncoated fabric, water droplet absorbs swiftly, whereas in the case of HMDSO-coated fabric, water droplet remains on the fabric surface with a maximum contact angle of 140[Formula: see text]. The HMDSO-deposited silk surface is found to be durable after detergent washing. Common stains such as ink, tea, milk, turmeric and orange juice are tested on the surface of both fabrics. In HMDSO-coated fabrics, all the stains are bedded like ball droplet. In order to study the self-cleaning property, the fabric is tilted to 45[Formula: see text] angle; stain droplets easily roll off from the fabric.

scholarly journals Facile Fabrication of Breathable and Superhydrophobic Fabric Based on Silica Nanoparticles and Amino‐Modified Polydimethylsiloxane

2020 ◽  
Author(s):  
Mahdi Hasanzadeh ◽  
Hossein Shahriyari Far ◽  
Aminoddin Haji ◽  
Giuseppe Rosace
Keyword(s):  
Contact Angle ◽  
Silica Nanoparticles ◽  
Water Contact Angle ◽  
Average Particle Size ◽  
Hydrophobic Surface ◽  
Water Repellency ◽  
Average Particle ◽  
Sliding Angle ◽  
Water Contact ◽  
Fabric Surface

This work attempted to fabricate superhydrophobic fabric via simple immersion technique. Textile fabrics were coated with silica nanoparticles prepared from tetraethoxysilane (TEOS) to obtain sufficient roughness with hydrophobic surface chemistry. Then the coated fabrics were treated with polydimethylsiloxane (PDMS) and aminopropyltriethoxysilane (APTES) to reduce the surface energy. The effects of PDMS concentration on the surface morphology and superhydrophobicity of as-prepared fabric were investigated. The morphology and the composition of superhydrophobic fabric was characterized by scanning electron microscopy (SEM), energy dispersive X-ray (EDS) and Fourier transform infrared (FTIR) spectroscopy. The results revealed the formation of spherical silica nanoparticles with average particle size of 250 nm throughout the fabric surface. The possible interactions between silica nanoparticles and APTES, as well as the fabrics were elucidated. Investigating the hydrophobicity of fabrics via water contact angle (WCA) measurement showed that the treated fabric exhibits excellent water repellency with a water contact angle as high as 151° and a very low water sliding angle. It also found that the treated fabric maintained most of its hydrophobicity against repeated washing. The comfort properties of the obtained superhydrophobic fabrics in term of air permeability and bending length did not reveal any significant changes.

scholarly journals Preparation and Characterization of Hydrophilic Wetting-Modified Polyamide Fibers

2020 ◽  
Vol 2020 ◽  
pp. 1-7 ◽  
Author(s):  
Liang Li ◽  
Shuping Liu ◽  
Rangtong Liu ◽  
Changjun Geng ◽  
Zedong Hu
Keyword(s):  
Contact Angle ◽  
Melt Spinning ◽  
Moisture Absorption ◽  
X Ray Diffraction ◽  
Water Contact ◽  
Crystal Forms ◽  
Initial Modulus ◽  
Spinning Process ◽  
Polyamide Fibers

To improve the moisture absorption and air permeability of polyamide (PA) fibers, the modified fibers with porous structure were fabricated by melt spinning using polyethylene glycol (PEG) as the pore-forming agent due to its high solubility in water. The effects of pores caused by different PEG contents on the structure and properties of modified fibers were analyzed by electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and water contact angle. These results indicate that the porosity of modified fibers increases with PEG content increasing. Moreover, the formation of pores obviously affects the crystal forms of modified fibers. The alpha crystal gradually decreases and the gamma crystal increases with the porosity increasing. Furthermore, with respect to the modified fibers obtained from 47.33% PEG content, its water absorption increases from 3.78% of pure PA to 19.76% and its contact angle decreases from 116° to 85°. In addition, due to the interaction of hydrogen bond occurring between PA and PEG during the spinning process, the elongation at break, rupture work, and initial modulus of modified fibers were improved when the porosity was not more than 4.23%.

scholarly journals Surface Modification of Acetate Fabric with Water Glass and Silane Compounds for Hydrophobicity

2012 ◽  
Vol 9 (1) ◽  
pp. 09-15
Author(s):  
Mohammad Mirjalili
Keyword(s):  
Surface Roughness ◽  
Contact Angle ◽  
Water Glass ◽  
Chemical Structure ◽  
Silica Coating ◽  
Dip Coating ◽  
Inexpensive Method ◽  
Structure Morphology ◽  
Hydrolysis And Condensation ◽  
Fabric Surface

Acetate fabric surface was treated with combinations of water glass and hexadecyltrimethoxysilane (HDTMS) to obtain hydrophobicity. Performance analysis was done by measuring the contact angle of water on the treated fabric surface. The chemical structure, morphology and surface roughness of treated fabrics were characterized by FTIR, SEM and AFM, respectively. Acetate fabrics with good hydrophobicity were obtained when treated with water glass and HDTMS. Such surfaces were obtained first by dip-coating the silica hydrosols prepared via hydrolysis and condensation of water glass onto acetate substrates, and then by modifying the surface of the silica coating with a non-fluor compound (HDTMS). This study demonstrated that the surface treatment using water glass and HDTMS is an inexpensive method for achieving hydrophobic acetate fabrics.

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