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Study of the Diffusion Behavior of Seawater Absorption in Multi-Walled Carbon Nanotubes/Halloysite Nanotubes Hybrid Nanofillers Modified Epoxy-Based Glass/Carbon Fiber Composites

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Modern Mechanical Engineering 2024年第2期14卷 25-38页

作者： Praful Choudhari Vivek Kulkarni sanjeevakumar khandal Department of Mechanical Engineering Sanjay Ghodawat University Atigre Kolhapur Maharashtra India

In the maritime industry, cost-effective and lightweight Fiber Reinforced Polymer (FRP) composites offer excellent mechanical properties, design flexibility, and corrosion resistance. However, their reliability in harsh seawater conditions is a concern. Researchers address this by exploring three approaches: coating fiber surfaces, hybridizing fibers and matrices with or without nanofillers, and interply rearrangement. This study focuses on evaluating the synergistic effects of interply rearrangement of glass/carbon fibers and hybrid nanofillers, specifically Multi-walled carbon nanotubes (MWCNT) and Halloysite nanotubes (HNT). The aim is to enhance impact properties by minimizing moisture absorption. Hybrid nanocomposites with equal-weight proportions of two nanofillers: 0 wt.%, 1 wt.%, and 2 wt.% were exposed to seawater for 90 days. Experimental data was subjected to modelling through the application of Predictive Fick’s Law. The study found that the hybrid composite containing 2 wt.% hybrid nanofillers exhibited a 22.10% increase in impact performance compared to non-modified counterparts. After 90 days of seawater aging, the material exhibited enhanced resistance to moisture absorption (15.74%) and minimal reduction in impact strength (8.52%) compared to its dry strength, with lower diffusion coefficients.

关键词： Glass/Carbon Fiber Hybrid Composites Multiwall Carbon Nanotubes (MWCNTs) Halloysite Nanotubes (HNTs) Diffusion Behaviour Impact Properties Seawater Aging

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稀释剂和载体

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农药译丛 1992年第4期14卷 48-53页

作者： R.K.khandal 尚愚人印度农药开发规划署

为了使农药的浓度降低到仅对靶标具有一定的毒性水平,需将其用惰性物质进行稀释,根据用途与需要加工成粉剂、可湿性粉剂、颗粒剂、乳油和悬浮剂等各种“农药制剂”。其中,在世界所有农药制剂产品中,粉剂和水分散性粉剂占有主要地位。为... 详细信息

为了使农药的浓度降低到仅对靶标具有一定的毒性水平,需将其用惰性物质进行稀释,根据用途与需要加工成粉剂、可湿性粉剂、颗粒剂、乳油和悬浮剂等各种“农药制剂”。其中,在世界所有农药制剂产品中,粉剂和水分散性粉剂占有主要地位。为了制取这些制剂,往往用粘土及相关的水合硅铝酸盐矿物质为载体和稀释剂。这些矿物除了能降低农药浓度外,还可赋予农药一定的悬浮性和密度等。由于它们具有吸附能力。

关键词：农药稀释剂载体

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Performance, Emission and Combustion Characteristics of Dual Fuel (DF) Engine Fuelled with Hydrogen Induction and Injection of Honne and Honge Methyl Esters

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Energy and Power Engineering 2015年第9期7卷 384-395页

作者： Rajshekhar S. Hosmath Nagaraj R. Banapurmath Mallikarjuna Bhovi Sanjeevkumar V. khandal Ajitkumar P. Madival Shashikumar S. Dhannur Varunkumar Gundalli Department of Mechanical Engineering B. V. B. College of Engineering and Technology Hubballi India

Renewable fuels like hydrogen and biodiesels can very well suit to diesel engine applications as they address problems of energy scarcity, foreign exchange savings and emission norms. Production of hydrogen and biodiesel to industrial scale with low cost techniques can pave way for their efficient use in engine applications. In view of this, an attempt has been made to operate a modified diesel engine on these high potential renewable fuel combinations. An experimental study was carried out to evaluate the performance, combustion and emission characteristics of diesel engine operated in dual fuel (DF) mode fuelled with esters of honne (EHNO), honge (EHO) oils and hydrogen induction. The study revealed that the brake thermal efficiency increased up to 20% hydrogen energy ratio (HER) and then it decreased. The emissions such as hydrocarbon (HC), Carbon monoxide (CO) and smoke decreased with HER while oxides of nitrogen (NOx) increased. The combustion parameters like peak pressure, ignition delay and heat release rate (HRR) increased with HER.

关键词： Hydrogen Carburetion Ester of Honne Oil (EHNO) Ester of Honge Oil (EHO) Hydrogen Energy Ratio (HER)

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