Abstract:
The present invention provides a metallic fastener comprising a threaded portion, wherein at least part of the threaded portion is coated with a composition. The composition is hard, FDA-approved and essentially consists of • (a) a paraffin wax with a melting temperature in the range of 50 to 70°C • (b) 1 to 5 parts by weight (pbw) of a resin per pbw of paraffin wax, • (c) 0.1 to 0.25 pbw graphite per pbw of paraffin wax, and • (d) 0.05 to 0.30 pbw of an FDA-approved silica per pbw of paraffin wax. Moreover, the present invention provides a process for coating a metallic fastener comprising a threaded portion, comprising the following steps: • (i) Providing a composition as defined above, • (ii) Maintaining the fastener or bringing it to a temperature in the range of 30 to 70°C, • (iii) Applying the composition at a temperature in the range of 100 to 170°C, • (iv) optionally, removing surplus composition, • (v) cooling the fastener to less than 100°C, • (vi) finishing the fastener in a water bath, and • (vii) drying the fastener. Also provided is a process for powder coating the metallic fastener.
Abstract:
본 발명은 기유, 분산제, 청정제, 산화방지제, 플러렌 및 유용성 금속 화합물을 포함하는 윤활유 첨가제 조성물, 이의 제조방법 및 이를 포함하는 윤활유에 관한 것이다. 본 발명의 엔진 윤활유 첨가제 조성물은 물리적으로 안정한 상태로 침전이나 오일필터에 여과되지 않고, 엔진 윤활유의 마찰 및 마모를 감소시키는 등 내마모 성능을 극대화며, 이를 통하여 출력 증강, 연비 향상 등의 부가적인 효과 역시 나타낼 수 있다.
Abstract:
Die vorliegende Erfindung betrifft ein Bauteil (10) mit einer Chrom, Stickstoff und Kohlenstoff enthaltenden Beschichtung (13), dadurch gekennzeichnet, dass die Beschichtung (13) eine Gleitschicht (16) mit einer keramischen Phase (17) und einer amorphen Phase (18) aufweist. Erfindungsgemäß ist vorgesehen, dass die keramische Phase (17) eine kristalline keramische Matrix aus Crx(C 1-y N y ) mit 0,8 ≤ x ≤ 1,2 und y > 0,7 bildet, und dass die amorphe Phase (18) aus Kohlenstoffpartikeln besteht, die in die kristalline keramische Matrix (17) im Wesentlichen gleichmäßig verteilt eingelagert sind.
Abstract:
The present invnetion relates to a coating composition comprising: (a) a resin solution containing a polyamide-imide resin and a solvent having a urea bond; and (b) a powdered solid lubricant. The coating composition containing a polyamide-imide resin does not raise any concern about reproductive toxicity and has excellent lubrication durability.
Abstract:
Methods of ex situ synthesis of graphene, graphene oxide, reduced graphene oxide, other graphene derivative structures and nanoparticics useful as polishing agents are disclosed. Compositions and methods for polishing, hardening, protecting, adding longevity to, and lubricating moving and stationary parts in devices and systems, including, but not" limited lo, engines, turbos, turbines, tracks, races, wheels, bearings, gear systems, armor, heat shields, and other physical and mechanical systems employing machined interacting hard surfaces through the use of nano-polishing agents formed in situ from lubricating compositions and, in some cases, ex situ and their various uses are also disclosed.
Abstract:
The present invention relates to a nano-diamond dispersion solution and a method for preparing the same. The method for preparing a nano-diamond dispersion solution comprises the following steps: providing a nano-diamond aggregation; mixing the nano-diamond aggregation with a metal hydroxide solution and stirring the mixture such that the nano-diamond aggregation is separated, to obtain a mixture solution; stabilizing the mixture solution such that the mixture solution is separated into a supernatant and precipitates; and extracting the supernatant and precipitates.
Abstract:
The introduction of nanostructures in a liquid provides a means for changing the physical and/or chemical properties of the liquid. Improvements in heat transfer, electrical properties, viscosity, and lubricity can be realized upon dispersion of nanotubes in liquids. Stable dispersions of nanostructures are described and surfactants/dispersants are identified which can disperse nanostructures in petroleum liquid medium. The appropriate dispersant is chosen for the selected nanostructure material and the oil based medium and the dispersant is dissolved into the liquid medium to form a solution. The nanostructure is added to the dispersant containing the solution with agitation, ultrasonication, and/or combinations thereof Nanostructures dispersed in a fluid form a nanofluid utilized as a shock absorber oil whereby the nanostructures serve to improve the viscosity index of the fluid or more particularly the shock absorber oil in the form of a lubricant additive.