scispace - formally typeset
Search or ask a question
Topic

Liquid paraffin

About: Liquid paraffin is a research topic. Over the lifetime, 6185 publications have been published within this topic receiving 52956 citations.


Papers
More filters
Journal ArticleDOI
TL;DR: In this paper, a facile and efficient approach to overcome the poor dispersion of MoS 2 nanoflowers in polyimide (PI) by carefully grafting them onto the surface of hollow carbon nanofibers (HCNF) was reported.
Abstract: In this work, we report a facile and efficient approach to overcome the poor dispersion of MoS 2 nanoflowers in polyimide (PI) by carefully grafting them onto the surface of hollow carbon nanofibers (HCNF). The obtained MoS 2 @HCNF hybrid was then utilized as homogeneous filler to enhance the tensile strength and lubricity of the PI-based protective coating. The results revealed that the tensile strength can be effectively improved by 46% accompanying with a slight decrease in elongation (19%) after the incorporation of 2.0 wt% MoS 2 @HCNF. Furthermore, the MoS 2 @HCNF/PI composite coatings also manifested outstanding anti-wear and friction reduction characteristics under the lubrication conditions of water (0.5 wt%, 72.5% reduction in wear rate) and liquid paraffin oil (1.5 wt%, 56% reduction in wear rate), demonstrating that the formed stable MoS 2 @HCNF hybrid could collaboratively alleviate the wear caused by the friction shear force in PI matrix through water or oil medium. The outstandingly enhanced behaviors of MoS 2 @HCNF hybrid suggest its potential application as the novel filler in anti-wear composite coatings.

34 citations

Journal ArticleDOI
TL;DR: In this article, a heterocyclic derivative of S-[2-(acetamido) benzothiazol-1-yl]N,N-dibutyl dithiocarbamate was synthesized and its tribological behavior as an additive in liquid paraffin was evaluated using a four-ball tester.

34 citations

Journal ArticleDOI
TL;DR: In this paper, a high-speed video camera and analysis of the voltage and current signals were used to study the different stages of a wire explosion, and the resulting carbide particles were analyzed using X-ray diffraction, scanning electron microscopy, TEM, and electron probe microanalysis.

33 citations

Journal ArticleDOI
TL;DR: In this paper, Borate derivatives of different dithiocarbamate ligands were synthesized by several step reactions to investigate tribochemical properties of boron, sulfur, and nitrogen combined in one selected compound.
Abstract: Boron-based lubricant additives have recently received significant attention, because of their wear-reducing and frictional properties and low pollution. At the same time, dithiocarbamate complexes with different metals have a long history of being used as multifunctional additives to lubricants. In this study, novel, environmentally friendly additives containing alkylborate and dithiocarbamate groups with alkyl or methylbenzyl substitutes in one molecule were studied. Tribological tests were performed with the additives admixed in a mineral oil using steel-on-steel contacts in a four-ball tribometer. Borate derivatives of different dithiocarbamate ligands were synthesized by several step reactions to investigate tribochemical properties of boron, sulfur, and nitrogen combined in one selected compound. Viscous liquid products were characterized by multinuclear 1H, 13C, and 11B NMR spectroscopy. The surface morphology and the elemental composition of the tribofilms were investigated using an optical profiler and scanning electron microscopy/energy dispersive X-ray spectroscopy (SEM/EDS). It was found that some of these novel compounds provide better antiwear performance and similar frictional properties compared with a commercially available ZnDTP package. Traces of sulfur in the tribofilms formed with both 0.2 and 1.0 wt% of alkylborate–dithiocarbamate compounds in a mineral oil were detected with EDS.

33 citations

Journal ArticleDOI
TL;DR: The results indicate that the irregular skull base protects nerves and vessels passing through the cranial floor by reducing brain displacement and that the intraventricular cerebrospinal fluid relieves strain in regions inferior and superior to the ventricles.
Abstract: Two-dimensional physical models of the human head were used to investigate how the lateral ventricles and irregular skull base influence kinematics in the medial brain during sagittal angular head dynamics. Silicone gel simulated the brain and was separatedfrom the surrounding skull vessel by paraffin that provided a slip interface between the gel and vessel. A humanlike skull base model (HSB) included a surrogate skull base mimicking the irregular geometry of the human. An HSBV model added an elliptical inclusion filled with liquid paraffin simulating the lateral ventricles to the HSB model. A simplified skull base model (SSBV) included ventricle substitute but approximated the anterior and middle cranial fossae by a flat and slightly angled surface. The models were exposed to 7600 rad/s2 peak angular acceleration with 6 ms pulse duration and 5 deg forced rotation. After 90 deg free rotation, the models were decelerated during 30 ms. Rigid body displacement, shear strain and principal strains were determined from high-speed video recorded trajectories of grid markers in the surrogate brains. Peak values of inferior brain surface displacement and strains were up to 10.9X (times) and 3.3X higher in SSBV than in HSBV. Peak strain was up to 2.7X higher in HSB than in HSBV. The results indicate that the irregular skull base protects nerves and vessels passing through the cranial floor by reducing brain displacement and that the intraventricular cerebrospinal fluid relieves strain in regions inferior and superior to the ventricles. The ventricles and irregular skull base are necessary in modeling head impact and understanding brain injury mechanisms.

33 citations


Network Information
Related Topics (5)
Particle size
69.8K papers, 1.7M citations
74% related
Drug delivery
49.7K papers, 1.8M citations
72% related
Nanoparticle
85.9K papers, 2.6M citations
71% related
Aqueous solution
189.5K papers, 3.4M citations
70% related
Electrolyte
124.6K papers, 2.3M citations
70% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20239
202216
202168
2020146
2019277
2018417