Abstract:
Carbon-based materials as anti-friction and anti-wear additives are used for advanced lubrication purposes. The materials have various shapes, sizes, and structures and are synthesized by autogenic reactions under extreme conditions of high temperature and pressure. The lubricant compositions comprise carbon-based particles suspended in a liquid hydrocarbon carrier. The compositions further comprise a surfactant (e.g., to aid in dispersion of the carbon particles). The lubricants have the ability to significantly lower friction and wear, which translates into improved fuel economies and longer durability of mechanical devices and engines.
Abstract:
An improved oil composition is disclosed. The oil composition includes a base oil comprising a hydrocarbon, the base oil having a base thermal conductivity. The oil composition also includes a first additive comprising a plurality of derivatized first additive nanoparticles dispersed within the base oil to form a modified oil having a modified thermal conductivity, wherein the modified thermal conductivity is greater than the base thermal conductivity. Alternately, an improved oil composition includes a base oil comprising a hydrocarbon and a first additive comprising a plurality of derivatized first additive nanoparticles dispersed within the base oil to form a modified oil comprising a stabilized suspension of the derivatized first additive nanoparticles in the base oil.
Abstract:
An improved oil composition is disclosed. The oil composition includes a base oil comprising a hydrocarbon, the base oil having a base thermal conductivity. The oil composition also includes a first additive comprising a plurality of derivatized first additive nanoparticles dispersed within the base oil to form a modified oil having a modified thermal conductivity, wherein the modified thermal conductivity is greater than the base thermal conductivity. Alternately, an improved oil composition includes a base oil comprising a hydrocarbon and a first additive comprising a plurality of derivatized first additive nanoparticles dispersed within the base oil to form a modified oil comprising a stabilized suspension of the derivatized first additive nanoparticles in the base oil.
Abstract:
L'invention a pour objet une composition lubrifiante comprenant : (a) au moins une huile de base synthétique et optionnellement au moins un additif et (b) des nanotubes de carbone, ladite composition ayant un pourcentage massique en nanotubes de carbone (b) par rapport à la quantité totale d'huiles de base (a) de la composition, compris entre 0,15 et 3,50%, le rapport entre ledit pourcentage massique en nanotubes de carbone, et la densité apparente de fa poudre de nanotubes de carbone, exprimée en g/1 et mesurée selon la norme ISO60-ASTM D1895 étant supérieur à 10 2 . Utilisation pour la lubrification de moteurs à combustion interne.
Abstract:
The present invention provides a lubricating oil composition for reducing a friction coefficient adjacent to the surface of being subjected to lubrication. In particular, the present invention provides nanoporous particles capable of being dispersed in a lubricating oil composition comprising base oil having a lubricant viscosity. Since the nanoporous particles having nano-sized, oil soluble pores according to the present invention reduces a friction coefficient, and in the long term, gradually releases an effective ingredient, the lubricating oil composition comprising the same of the present invention can act as a reducing agent for reducing friction for a long period of time, and thereby, exhibit excellent lubricant effects.
Abstract:
본 발명은 나노 다이아몬드 분산액 및 그 제조방법을 개시한다. 나노 다이아몬드 분산액 제조방법은, 나노 다이아몬드 응집물을 제공하는 단계; 나노 다이아몬드 응집물이 분리되도록, 나노 다이아몬드 응집물을 금속 수산화물 수용액과 혼합하고 교반하여 혼합 용액을 형성하는 단계; 혼합 용액이 상등액과 침전물로 분리되도록, 혼합용액을 안정화하는 단계; 및 상등액과 침전물을 각각 추출하는 단계;를 포함한다.
Abstract:
A method for the preparation of carbon nanotube modified fluids such, that the dispersion of nanotubes in such fluids, exampled by those which are oil based is enhanced through the combined use of mechanical, sonic and ultrasonic devices.
Abstract:
This disclosure concerns a procedure for bulk scale preparation of high aspect ratio, 2-dimensional nano platelets comprised of a few graphene layers, Gn. n may, for example, vaiy between about 2 to 10. Use of these nano platelets in applications such as thermal interface materials, advanced composites, and thin film coatings provide material systems with superior mechanical, electrical, optical, thermal, and antifriction characteristics.