Effects of SiO<sub>2</sub> particle size on the corrosion resistance of fluoropolymer/SiO<sub>2</sub> composite coatings

Jun, Lu; Chen, L.; Song, Renguo

doi:10.1080/02670844.2018.1491511

Cited by 9 publications

(6 citation statements)

References 16 publications

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“…In order to evaluate the performances of coating, the following evaluation experiments were conducted [16,17]. Water vapour experiment: In order to simulate the influence of water vapour, 100 mL of water was placed in a 250 mL beaker.…”

Section: Methodsmentioning

confidence: 99%

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Preparation of a SiO_x coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion

Zhang

Tian

Wang

et al. 2020

Surface Engineering

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The preparation of inorganic coatings on polymer surfaces to improve their performance is a frequently used method. However, the cracking and falling off of the coatings caused by different thermal expansion coefficients or poor adhesion between the coatings and polymer substrates need to be solved. In this paper, the preparation of a SiO x coating with a lot of micro-nanometre wrinkles is proposed, using the scalability of wrinkles to alleviate or eliminate the stress. The wrinkled coating is prepared on the polyimide surface by a sol forming process. Environmental simulation tests showed that the coatings exhibit resistance to moisture and temperature change, and have a good anti-atomic oxygen performance.

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Section: Methodsmentioning

confidence: 99%

“…In order to evaluate the performances of coating, the following evaluation experiments were conducted [16,17].…”

Section: Evaluation Experimentsmentioning

confidence: 99%

Preparation of a SiO_x coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion

Zhang

Tian

Wang

et al. 2020

Surface Engineering

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“…Over the past few years, fluoropolymers [1][2][3][4] have attracted much attention due to their many advantages, such as weather resistance, heat resistance, and solvent resistance [5,6]. As the C-F bonds are particularly strong (bond energy of 485 kJ mol −1 ) and the fluorine atoms exhibit low polarizability and strong electronegativity [7], polymers containing a significant fraction of fluorine atoms usually possess excellent chemical and thermal stability [8].…”

Section: Introductionmentioning

confidence: 99%

Preparation of UV-Curable Low Surface Energy Polyurethane Acrylate/Fluorinated Siloxane Resin Hybrid Coating with Enhanced Surface and Abrasion Resistance Properties

et al. 2020

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Low surface energy coatings have gained considerable attention due to their superior surface hydrophobic properties. However, their abrasion resistance and sustainability of surface hydrophobicity are still not very satisfactory and need to be improved. In this work, a series of utraviolet (UV)-curable fluorosiloxane copolymers were synthesized and used as reactive additives to prepare polyurethane acrylate coatings with low surface energy. The effect of the addition of the fluorinated graft copolymers on the mechanical durability and surface hydrophobicity of the UV-cured hybrid films during the friction-annealing treatment cycles was investigated. The results show that introducing fluorosiloxane additives can greatly enhance surface hydrophobicity of the hybrid film. With addition of 2 wt.% fluorosiloxane copolymers, the water contact angle (WCA) value of the hybrid film was almost tripled compared to that of the pristine PU film, increasing from 58 • to 144 • . The hybrid film also showed enhanced abrasion resistance and could withstand up to about 60 times of friction under a pressure of 20 kPa. The microstructure formed in the annealed film was found to contribute much to achieve better surface hydrophobicity. The polyurethane acrylate/fluorinated siloxane resin hybrid film prepared in this study exhibits excellent potential for applications in the low surface energy field.Especially, some pioneering studies demonstrated that the robust and self-healing ability of the fluorinated materials contribute significantly to the performance of superhydrophobic coatings. For example, Lin et al. [15] prepared superhydrophobic fabrics under 12 KPa and 28,000 cycles of abrasion with wool felt by using a fluoroalkyl silane and crosslinked polydimethylsiloxane (PDMS). Their results showed that the water contact angle of the fabrics remained above 150 • , indicating that the superhydrophobic surface character was retained. They also utilized fluorinated-decyl polyhedral oligomeric silsesquioxane (FD-POSS) and hydrolyzed fluorinated alkyl silane (FAS) to prepare superhydrophobic fabrics, which still exhibited superhydrophobic surface even under ten plasma-and-heat cycles [16]. Zhang et al. [17] combined thiol-ene fluorinated siloxane (T-FAS) and hydrophobic fumed silica nanoparticles to prepare superhydrophobic coatings that could withstand approximately 100 abrasion cycles at 45 KPa [18]. It should be noted that, in these examples, the materials were surface-modified materials rather than pure fluoropolymers.Incorporation of fluorinated groups into acrylate copolymers could bring several desirable properties to the polyacrylate coatings. Depending on their chain length, the contribution of the introduced fluoroalkyl-containing moieties to the material surface properties can be tailored. If the molecular chain of the moieties are too short, they may be buried within the polymer matrix, thus mitigating their contribution [19]. In this aspect, Koji Honda et al. [9] studied the effects of side chain length on the molecular ag...

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“…There are a few well established traditional coating processes are being used for deposit polymer coating, such as solvent-based system; powder coating process; fluidized bed coating process and flame spray coating process. Many polymer-based coatings are deposited by spray/brushing/dipping following by curing method for anti-corrosion, anti-graffiti, transparent hydrophobic, lubricating applications [7][8][9][10][11][12][13]. A recent study reports Polytetrafluoroethylene coating deposited by magnetron sputtering may act as oil adsorbing layer [14].…”

Section: Introductionmentioning

confidence: 99%

One-step fabrication of thermal sprayed polymer coating on metals

Tailor¹,

Vashistha²,

Modi³

et al. 2020

Mater. Res. Express

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This study presents the polymer coating onto metal-based structures by the thermal spray process. The deposition of polymers onto metal substrate has been developed by controlling the temperature in conventional thermal spray process. Properties of final polymer coating are investigated, such as microstructural, crystallization, mechanical, friction and corrosion properties. The objective of this is to deposit a polymer coating by controlling temperature in conventional thermal spray process and evaluate the coating properties for specific applications such as polymer coating on vacuum pump screws as abrasion resistant coating and on Kevlar fabric to provide strength for bullet proof soft armor vest for defense application. This study reports that as-sprayed coating can be used without post processing like annealing and filing. As-sprayed PEEK coating has a considerable hardness and adhesion strength found to be 17±5 HV, 16±3.0 MPa, respectively. However, post annealing treatment may introduce further improvements in wear and friction resistant properties of the final polymer coating system. The microhardness value has increased from 17 HV to 29 HV in average. The annealed semi-crystalline coatings exhibit the slightly lower friction coefficient than amorphous coating (as-sprayed); 0.31 in average versus 0.36. The wear rate of annealed coating is lower than the as-sprayed coating, decreased by approx 50% (10.5 in average versus 20.5×10 − 6 mm 3 N −1 m −1 ). The PEEK coating protects the base metal against corrosion and life against corrosion is found to be 25.4 μm.y −1 ; 81.75% efficiency in reduction of corrosion with respect to steel exposed in 5% NaCl solution.

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Effects of SiO₂ particle size on the corrosion resistance of fluoropolymer/SiO₂ composite coatings

Cited by 9 publications

References 16 publications

Preparation of a SiO_x coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion

Preparation of a SiO_x coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion

Preparation of UV-Curable Low Surface Energy Polyurethane Acrylate/Fluorinated Siloxane Resin Hybrid Coating with Enhanced Surface and Abrasion Resistance Properties

One-step fabrication of thermal sprayed polymer coating on metals

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Effects of SiO2 particle size on the corrosion resistance of fluoropolymer/SiO2 composite coatings

Cited by 9 publications

References 16 publications

Preparation of a SiOx coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion

Preparation of a SiOx coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion

Preparation of UV-Curable Low Surface Energy Polyurethane Acrylate/Fluorinated Siloxane Resin Hybrid Coating with Enhanced Surface and Abrasion Resistance Properties

One-step fabrication of thermal sprayed polymer coating on metals

Contact Info

Product

Resources

About

Effects of SiO₂ particle size on the corrosion resistance of fluoropolymer/SiO₂ composite coatings

Preparation of a SiO_x coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion

Preparation of a SiO_x coating with a lot of micro–nanometre wrinkles on the polyimide surface and its resistance to corrosion