دانلود رایگان مقاله پوشش فوق آبگریز مقاوم توسط سیلوکسان فلوئوردار thiol-ene

عنوان فارسی
پوشش فوق آبگریز مقاوم توسط سیلوکسان فلوئوردار thiol-ene
عنوان انگلیسی
Robust, self-healing, superhydrophobic coatings highlighted by a novel branched thiol-ene fluorinated siloxane nanocomposites
صفحات مقاله فارسی
0
صفحات مقاله انگلیسی
9
سال انتشار
2016
نشریه
الزویر - Elsevier
فرمت مقاله انگلیسی
PDF
کد محصول
E2972
رشته های مرتبط با این مقاله
مهندسی مواد
گرایش های مرتبط با این مقاله
متالوژی
مجله
علوم و فن آوری مواد مرکب - Composites Science and Technology
دانشگاه
دانشکده علوم، دانشگاه نورث وسترن پلی تکنیک، چین
کلمات کلیدی
فوق آبگریز، شبکه های پلیمری، درهم تنیدهای (IPN)، خود شفا
۰.۰ (بدون امتیاز)
امتیاز دهید
چکیده

abstract


In this work, we present one-step dip-coating strategy for fabricating robust, self-healing and superhydrophobic coatings using a coating solution that contains a novel branched thiol-ene fluorinated siloxane (T-FAS), polydimethylsiloxane (PDMS) elastomer and hydrophobic fumed silica nanoparticles (SiO2 NPs). The novel branched T-FAS, with low fluorinated surface energy and high sol-gel reactivity, was prepared by introducing (N-methyl-perfluorohexane-1-sulfonamide) ethyl acrylate (FSA) and gmethacryloxypropyltrimethoxysilane (MPS) into pentaerythritol tetra (3-mercaptopropionate) (PETMP) via thiol-ene click reaction. The superhydrophobic coating, being high stable to strong acid, UV, thermal and smudge treatment, has a water contact angle of 165 ± 2 and shedding angle of 4 ± 1 . It can withstand at least 100 cycles of abrasion with 1500 grit sandpaper under 45 KPa due to the interpenetrating polymer networks (IPN) constructed by T-FAS/PDMS. The IPN is also self-healing to chemically etching using long perfluoro-terminated chains of T-FAS which can spontaneously reorient to new air interfaces. The robust self-healing IPN may lead to the development of new efficient strategies for durable protective coatings in various applications.

نتیجه گیری

4. Conclusion


In summary, we developed a superhydrophobic interpenetrating polymer network that consists of a novel branched TFAS, PDMS and SiO2 NPs with self-healing properties. The novel branched T-FAS using an average of two long hydrolysable silane and fluoroalkyl chains, respectively as body and arms, provides highly durable and self-healing superhydrophobicity. Such robust, self-healing, superhydrophobic coatings from T-FAS and PDMS may be useful for the development of robust protective coatings for various applications.


بدون دیدگاه