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Fabrication and Characterization of Superhydrophobic and Highly Oleophobic Silk Fabrics

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Fabrication and Characterization of Superhydrophobic and Hig...

作者： do khai ly 浙江理工大学

学位级别：硕士

Superhydrophobicity and oleophobicity which have been discovered from natural world are definitely anticipated to be beneficial for a large number of practical applications Imitation of nature has been the most appreciable way to develop the structural properties for coating fabrication,due to millions of creatures including botanical,insect and zoological species,which have the ability to be resistant from water and low surface tension fluids.Mechanically robust superhydrophobic and oleophobic coatings refer to the surface modification of optical materials in order to fabricate the surface roughness and reduce the low surface energy,that lead to water and oil repellent properties with several practical and industrial benefits.Nowadays,many publications have presented the preparation strategies of superhydrophobic and oleophobic surface for textile materials.However,there is a lack of ideal coating approach for superhydrophobic and oleophobic silk fabric.Furthermore,these techniques have the disadvantage of complicated procedure,time consuming,use of toxic chemicals,high cost for experiments and low effectiveness.In this master thesis,simple approaches to prepare fluorine-free superhydrophobic coating and highly hydrophobic and oleophobic coating for silk textile fabrics based on SiO2 nanoparticles and low surface energy agents are reported.SiO2 nanoparticles has naturally hydrophilic features and were functionalized by fluorine-free and/or fluorinated silanes.Due to experiment works,we successfully prepared the superhydrophobic silk fabric with water contact angle（WCA）of 152.0° and water sliding angle（WSA）of 4.2°,and highly hydrophobic silk fabric with WCA of 149.5°,which is extremely near to superhydrophobic standard.Furthermore,by the introduction of fluorinated silane,oleophobicity has been developed and oil contact angle（OCA）of modified silk fabric reached 132.0°.Effects of different particle sizes of SiO2 nanoparticles,concentration of chemicals in modification solution and the activity of fluorine-free and

关键词： Superhydrophobic Oleophobic Silkfabric Silicananoparticles Laundering durability

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耐洗型疏水疏油丝绸织物的制备及性能研究

丝绸 2020年第12期57卷 26-33页

作者： do khai ly 钟申洁徐浪左甜易玲敏浙江理工大学纺织科学与工程学院杭州310018 浙江理工大学先进纺织材料与制备技术教育部重点实验室杭州310018 浙江理工大学生态染整技术教育部工程研究中心杭州310018

目前所制备的疏水疏油丝绸织物大多难以同时满足疏水疏油及耐洗性,或制备过程过于复杂。因此,文章提出在丝绸表面浸涂一层疏水改性的二氧化硅纳米粒子以提供一定的粗糙度,随之将聚(偏氟乙烯-六氟丙烯)溶液喷涂于其上以提供低表面能,两... 详细信息

目前所制备的疏水疏油丝绸织物大多难以同时满足疏水疏油及耐洗性,或制备过程过于复杂。因此,文章提出在丝绸表面浸涂一层疏水改性的二氧化硅纳米粒子以提供一定的粗糙度,随之将聚(偏氟乙烯-六氟丙烯)溶液喷涂于其上以提供低表面能,两者的协同作用可使丝绸织物具有高度的疏水疏油性和良好的耐洗性能。结果显示,通过这一简单易实施的两步法,制备所得丝绸织物表面的水接触角高达149.5°、滚动角小至5.5°,色拉油的接触角可达132°,表现出高度的疏水疏油性。经20次标准洗涤后,水接触角仍在140°以上,且滚动角小于10°,表现出优异的耐洗色牢度。

关键词：丝绸织物疏水疏油耐洗牢度疏水改性SiO2

The electroweak monopole–antimonopole pair in the standard model

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Communications in Theoretical Physics 2024年第3期76卷 113-119页

作者： Dan Zhu khai-Ming Wong Guo-Quan Wong School of Physics Universiti Sains Malaysia11800 USMPenangMalaysia

We present the first numerical solution that corresponds to a pair of Cho–Maison monopoles and antimonopoles(MAPs) in the SU(2) × U(1) Weinberg–Salam(WS) theory.The monopoles are finitely separated,while each pole carries a magnetic charge ±4π/e.The positive pole is situated in the upper hemisphere,whereas the negative pole is in the lower hemisphere.The Cho–Maison MAP is investigated for a range of Weinberg angles,0.4675≤ tan θ_(W)≤10,and Higgs self-coupling,0 ≤ β ≤ 1.7704.The magnetic dipole moment(μm) and pole separation(d_(z)) of the numerical solutions are calculated and analyzed.The total energy of the system,however,is infinite due to point singularities at the locations of monopoles.

关键词： magnetic monopole Cho-Maison monopole Weinberg-Salam model

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越南领美亚丝绸的历史和发展（英文）

丝绸 2018年第1期55卷 88-93页

作者：杜凯丽浙江理工大学材料与纺织学院、丝绸学院杭州310018

领美亚丝绸来源于安江新洲,被认为是"越南丝绸之王",是一种传统的高档材料,其中包括农民的辛勤工作和来自柿子提取物的天然染色草药。20世纪70年代以来,在现代化的生产过程中,尼龙纤维和涤纶占领了市场,领美亚丝绸有消失的危险。文章通... 详细信息

领美亚丝绸来源于安江新洲,被认为是"越南丝绸之王",是一种传统的高档材料,其中包括农民的辛勤工作和来自柿子提取物的天然染色草药。20世纪70年代以来,在现代化的生产过程中,尼龙纤维和涤纶占领了市场,领美亚丝绸有消失的危险。文章通过历史文献对越南领美亚丝绸的历史、发展、衰退和复兴进行深入研究,介绍了采用双螺旋提取物作为主要原料的染色技术,将织物染成黑色,并建议将领美亚丝绸应用于纺织和时尚产业,作为可变市场的高品质材料。

关键词：越南丝绸领美亚丝绸安江省潭州柿子果子时尚品

越南莲花纤维丝绸原料及织造技术研究（英文）

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丝绸 2019年第9期56卷 43-49页

作者：杜凯丽浙江理工大学材料与纺织学院、丝绸学院

Phung Xa丝绸村(越南河内市)开发了一种新型独特的天然真丝面料莲花丝绸。莲花丝绸是一种高档材料,含有当地人民娴熟技术和从莲花茎中提取的纤维。2000年以来,生物燃料和环保纺织产品的需求不断增加,丝绸业成为越南主导产品之一,且是高... 详细信息

Phung Xa丝绸村(越南河内市)开发了一种新型独特的天然真丝面料莲花丝绸。莲花丝绸是一种高档材料,含有当地人民娴熟技术和从莲花茎中提取的纤维。2000年以来,生物燃料和环保纺织产品的需求不断增加,丝绸业成为越南主导产品之一,且是高附加值产品,为越南的GDP和国民经济做出了积极贡献。通过文献资料和实际研究,文章介绍和分析了莲花丝绸发展的织造技术及其优良品质,如光泽自然、对染料有亲和力、色彩鲜艳、吸收能力高和质量轻。此外,还提出了莲花丝绸在纺织和时装业中作为优质面料的一些应用。

关键词：越南丝绸 Phung Xa丝绸村莲花丝绸莲花茎莲秆莲花纤维

巴基斯坦新特提斯构造–岩浆演化与重要金属成矿作用

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西北地质 2024年第3期57卷 154-176页

作者：洪俊张辉善吕鹏瑞 Tahseenullah Khan Yasir Shaheen Khalil 王志华张海迪自然资源部岩浆作用成矿与找矿重点实验室中国地质调查局西安地质调查中心陕西西安710119 巴基斯坦巴利亚大学地球科学与环境学院巴基斯坦伊斯兰堡44000 巴基斯坦地质调查局巴基斯坦伊斯兰堡44000 长安大学资源学院陕西西安710054

巴基斯坦在大地构造位置上处于印度、欧亚和阿拉伯三大板块的汇聚带,正同时发生着大陆碰撞和大洋俯冲作用,是研究地球系统深部圈层相互作用与成矿效应的绝佳天然实验室。但是,目前对于巴基斯坦构造演化与成矿作用的研究还不系统,对于巴... 详细信息

巴基斯坦在大地构造位置上处于印度、欧亚和阿拉伯三大板块的汇聚带,正同时发生着大陆碰撞和大洋俯冲作用,是研究地球系统深部圈层相互作用与成矿效应的绝佳天然实验室。但是,目前对于巴基斯坦构造演化与成矿作用的研究还不系统,对于巴基斯坦的大型–超大型矿床形成的背景和机制仍不清楚。笔者针对巴基斯坦不同类型的优势矿种开展了深入解剖和对比研究,系统梳理最新研究进展,围绕巴基斯坦新特提斯构造–岩浆演化与成矿作用响应的关键科学问题,分析铜矿、铬铁矿、铅锌矿以及碳酸岩有关的稀土矿床等重要金属成矿类型形成的构造环境以及与区域重大地质事件的耦合关系,总结巴基斯坦区域成矿规律,为资源潜力分析和境内外找矿勘查提供依据。

关键词：新特提斯岩浆作用铬铁矿斑岩铜矿碳酸岩巴基斯坦

The Transition of Belt and Road Initiative from 1.0 to 2.0:Challenges and Implications of Green Development

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Fudan Journal of the Humanities and Social Sciences 2023年第3期16卷 293-328页

作者： Rui Wang khai Ern Lee Mazlin Mokhtar Thian Lai Goh Institute for Environment and Development(LESTARI) Universiti Kebangsaan MalaysiaBangiMalaysia School of Management Guizhou University of CommerceGuiyangChina Jeffrey Sachs Center on Sustainable Development Sunway UniversitySunway CityMalaysia Sustainable Development Solutions Network(SDSN)Asia Sunway UniversitySunway CityMalaysia Faculty of Science and Technology Universiti Kebangsaan MalaysiaBangiMalaysia

China claims that the Belt and Road Initiative is a cross-regional comprehensive initiative covering the economy,social and environmental pillars.When it was first proposed,it identified five main areas which call for cooperation priorities,i.***.policy coordination,interconnection of facilities,unimpeded trade,financial integration and people-to-people bond.Scholars globally are focusing on the development of the Belt and Road Initiative as it has gone through several development stages.The Belt and Road Initiative initially focused on economic development,equal dialogue and cultural interchange between the Belt and Road Initiative partners and China,and now it has added the concept of green development.This paper reviews the Belt and Road Initiative documents since 2013 and analyses the changes of environmental policies in the Belt and Road Initiative,aiming to identify the challenges and implications of green development.The outcome of this paper provides insight into how the Belt and Road Initiative can contribute towards sustainable development with its partner countries.

关键词： China Belt and Road Initiative Environment Green development Sustainable development

A Deep Learning Model of Traffic Signs in Panoramic Images Detection

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Intelligent Automation & Soft Computing 2023年第7期37卷 401-418页

作者： Kha Tu Huynh Thi Phuong Linh Le Muhammad Arif Thien khai Tran International University Ho Chi Minh CityVietnam-Vietnam National UniversityHo Chi Minh City700000Vietnam Department of Computer Science The Superior UniversityLahorePakistan Ho Chi Minh City University of Foreign Languages and Information Technology Ho Chi Minh City700000Vietnam

To pursue the ideal of a safe high-tech society in a time when traffic accidents are frequent,the traffic signs detection system has become one of the necessary topics in recent years and in the future.The ultimate goal of this research is to identify and classify the types of traffic signs in a panoramic image.To accomplish this goal,the paper proposes a new model for traffic sign detection based on the Convolutional Neural Network for com-prehensive traffic sign classification and Mask Region-based Convolutional Neural Networks(R-CNN)implementation for identifying and extracting signs in panoramic images.Data augmentation and normalization of the images are also applied to assist in classifying better even if old traffic signs are degraded,and considerably minimize the rates of discovering the extra boxes.The proposed model is tested on both the testing dataset and the actual images and gets 94.5%of the correct signs recognition rate,the classification rate of those signs discovered was 99.41%and the rate of false signs was only around 0.11.

关键词： Deep learning convolutional neural network Mask R-CNN traffic signs detection

Preliminary Investigation of Copper Joints Soldered with Sn58Bi

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Journal of Harbin Institute of Technology(New Series) 2022年第1期29卷 57-63页

作者： Amares Singh Teow Sinn khai Rajkumar Durairaj Amer Ahmed Qassem Saleh Center for Advanced Materials Research and Manufacturing Processes SEGi UniversityPetaling Jaya 47810SelangorMalaysia Lee Kong Chian Faculty of Engineering and Science University Tunku Abdul RahmanKajang 43000SelangorMalaysia

In recent years,intensive studies have been carried out to find an alternative for Tin(Sn)⁃Lead(Pb)solder alloys with increasing demand over lower temperature solder alloys in current electronic packaging industry.High temperature operational solder alloys seem to produce drawback to other components on the printed circuit board(PCB).Low melting temperature Sn58Bi substrate as a potential replacement was investigated in this paper based on the melting properties,wettability,and shear strength.The Sn58Bi was soldered at a temperature below 200℃on the Cu substrate,and the shear strength and contact angle were calculated.A peak temperature(melting temperature,T_(M))of 144.83℃was identified.Single lap joint method was performed at a strain rate of 0.1 mm/min and an average shear strength of 23.4 MPa was found from three samples.The contact angle(wettability)was calculated to study the solder joint behaviour at reflow temperature of 170℃.The contact angle of the Sn58Bi was found to be 32.4°and considered to be desired value since the angle is less than 50°.The low temperature soldering provides a preliminary result to allow further application on the real PCB.

关键词： SnBi solder low temperature shear strength contact angle