Results 11 to 20 of about 16,243 (214)

Synthesis and Performance Analysis of Green Water and Oil-Repellent Finishing Agent with Di-Short Fluorocarbon Chain

open access: yesMolecules, 2023
A novel fluorine-containing water-repellent agent (OFAE-SA-BA) was designed and synthesized by emulsion copolymerization, which was used to replace the commercial long fluorocarbon chain water-repellent agent.
Yanli Li   +6 more
doaj   +1 more source

Peningkatan ketahanan suhu dingin kulit atasan sepatu melalui pengurangan daya penyerapan air dan pengaruhnya terhadap sifat fisik dan morfologi

open access: yesMajalah Kulit, Karet, dan Plastik, 2017
A research has been undertaken to increase the cold resistance of upper leather by decreasing its water absorption ability. Fluorinated acrylic polymer, a water repellent substance, was added at fatliquoring and finishing stages of upper leather with ...
Prayitno, Emiliana Kasmudjiastuti
doaj   +1 more source

Influence of Water-Repellent Treatment with Silicon Resin on Properties of Concrete

open access: yesAdvances in Materials Science and Engineering, 2019
Although studies on water-repellent properties of silicon resin (SR) on cement-based materials have received tremendous attention around the world in recent years, they mainly focus on individual properties of water-repellent concrete treated with SR ...
Yupeng Tian   +5 more
doaj   +1 more source

Pressure generated by partially water-repellent flat thrust bearing with weak water-repellent part

open access: yesNihon Kikai Gakkai ronbunshu, 2021
The generation state of the pressure for partial water-repellent (slip) type flat thrust bearings with high/low slip parts was examined with experiments and infinite width bearing approximation.
Akitoshi TAKEUCHI
doaj   +1 more source

Experimental Study on Water Lubrication Characteristics of Full-Flat Thrust Bearing with Partial Water-Repellent Surface

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2013
In this study, a flat thrust bearing is developed by active exploiting the slip flow generated on a water-repellent surface. In order to produce a load, this bearing has a structure that generates a pressure flow by using the discontinuity of shear flow ...
Akitoshi TAKEUCHI, Yukio KITAMURA
doaj   +1 more source

Performance evaluation of water-repellent combat uniforms using a static manikin and human subjects under a rainfall tower system

open access: yesFashion and Textiles, 2021
The purpose of the present study was to evaluate the water-repellent properties of newly-developed combat uniforms using a rainfall tower system. Two types of water-repellent- combat uniforms with an identical level of water repellency through textile ...
Juyoun Kwon   +3 more
doaj   +1 more source

Study on Water Repellency Modification of Strongly Expansive Soil

open access: yesRenmin Zhujiang, 2022
To study the inhibition effect of water-repellent sand on the expansion rate of expansive soil,this study takes the strongly expansive soil of weathered slopes as an example and adds octadecylamine into sand as water repellent agents to improve the ...
DING Junhao, CHAI Linchun, ZHANG Jianjun
doaj  

The influence of water repellent products on the chromatic modifications of the ceramic brick

open access: yesMateriales de Construccion, 2011
Chromatic variation, colour and luminosity, undergone by the ceramic support protected by the incorporation of a treatment with water repellent products, is analysed. A new methodology is suggested, based on RGB model where quantifiable values from each
J. A. Coronado Martin, A. Garcia Santos
doaj   +1 more source

Water–soil interactions: Unravelling the processes and stages involved in the wetting of water repellent soils

open access: yesJournal of Hydrology X, 2023
The water repellent behaviour of soils is a widely studied phenomenon given its implications for infiltration, runoff, erosion and preferential flow. However, the principles underlying the eventual penetration of water into affected soils remain poorly ...
Helen M. Balshaw   +2 more
doaj   +1 more source

Water Movement and Finger Flow Characterization in Homogeneous Water-Repellent Soils

open access: yesVadose Zone Journal, 2018
Soil water repellency (SWR) is a widespread property in soils around the world. It influences soil water movement and causes unstable flow. The mechanics of finger flow occurrence in water-repellent soils are not clearly understood.
Yichen Wang   +5 more
doaj   +1 more source

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