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Robust Polystyrene/Fluorinated Silica Superhydrophobic Composite Coatings with Rapid curing at room temperature Prepared by One-Step Spraying

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Journal of Bionic Engineering 2023年第6期20卷 2742-2754页

作者： Yong Wang Lihua Yu Junhua Xu Kai Jing Ningxin Mao School of Materials Science and Engineering Jiangsu University of Science and Technology2 Mengxi RoadZhenjiang CityJiangsu ProvinceChina

Superhydrophobic materials are severely limited in their applications due to their weak mechanical properties and complex preparation *** this paper,polystyrene/fluorinated silica(PS/SiO_(2))superhydrophobic composite coatings were prepared on the surface of 304 stainless steel using a simple one-step spraying *** effects of different PS contents on the wettability as well as the wear properties of the samples were ***_(2) was encapsulated in polystyrene to form a structure similar to cement encapsulated *** the addition of PS,a mound-like structure was formed on the sample surface,and a more optimized micro–nano structure was obtained when the content of PS was 0.6 *** this time,the sample exhibited excellent wettability with a contact angle of 157.86°and a sliding angle of 0.84°.In addition,the contact angle of 151.09°was achieved after 180 cm of friction under a 100 g load and the composite coating prepared by this method also has excellent chemical stability,water impact resistance,corrosion resistance,and self-cleaning *** opens up new possibilities for the development of simple and robust superhydrophobic materials.

关键词： Superhydrophobic room temperature curing Mechanical durability Corrosion resistance Self-cleaning

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Optimum Calcination Condition of Waste Stabilized Adobe for Alkali Activated High Volume Adobe-Slag Binder Cured at room temperature

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Journal of Renewable Materials 2022年第5期10卷 1269-1285页

作者： Brya Aldawoodi Salaheddin Sabri Abdulmounem Alchekh Wis Department of Civil Engineering Cyprus International UniversityHaspolatNorth Cyprusvia Mersin 10Turkey Kocaeli University Kocaeli41380Turkey

This study aims to determine the most convenient calcination temperature and calcination duration of wastestabilized Adobe(AB)to produce a new alkali-activated ***-stabilized Adobe mainly consists of soil,CaCO3 as a stabilizer,and straw(for strengthening).The availability of raw materials for making Adobe presents the waste-stabilized Adobe as a potential product for a new alkali-activated ***-stabilized Adobe collected from an abandoned damaged building in the village of Inonu in Northern Cyprus,ground and calcined at the following temperatures:450,550,650,750,850,and 950℃.The calcination at each temperature was held for different durations 1,3,5,and 7 *** and calcined waste stabilized Adobe structures were investigated using XRF,TGA-DTA,XRD,FTIR,and *** technical and environmental views related to energy consumption,waste stabilized Adobe calcined at 750℃ for 1 h presented the most promising results regarding the production of a new precursor for alkali-activated *** study also presents the effect of ground granulated blast furnace slag(GGBFS)usage on the fresh and hardened properties of optimum calcined AB-based alkali-activated pastes cured at room *** was used to partially replace AB to form a binary composite raw material system and seven experimental groups were designed according to replacement levels of 0%,5%,10%,15%,20%,25%and 30%(by mass).Alkali-activated high volume waste-stabilized Adobe-slag pastes prepared using Na2SiO3-to-NaOH ratio of 2 and 12 M concentration of Sodium *** fresh property as flowability and the hardened property as the compressive strength of the alkali-activated pastes with different GGBFS contents were *** results indicated that the incorporation of GGBFS increased the flowability of fresh alkali-activated pastes.A 28-day compressive strength of 43.75 MPa can be obtained by a 30%replacement level of GGBFS.

关键词： Waste stabilized adobe calcination alkali activation compressive strength room temperature curing

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