Abstract:
This invention discloses a thermoconducting silicone composition comprising the following components (A)-(F), whereof the viscosity at 25null C. before curing is 10-1000 Panulls, a method of installing this composition, a heat dissipating structure of a semiconductor device using the same, and a cured material formed by heating this composition in two steps. Component (A): 100 weight parts of an organopolysiloxane having at least two alkenyl groups in the molecule, and a viscosity of 10-100,000 mm2/s at 25null C., Component (B): An organohydrogenpolysiloxane having at least two hydrogen atoms bonded directly to silicon atoms in the molecule, in an amount such that (total number of hydrogen atoms bonded directly to silicon atoms/total number of alkenyl groups in Component (A)) is 0.5-5.0, Component (C): A low melting metal powder having a melting point of 40-250null C., and an average particle size of 0.1-100 micrometers, Component (D): A highly thermoconducting filler having a melting point of more than 250null C., and an average particle size of 0.1-100 micrometers, the total amount of component (C) and Component (D) being 800-2,200 weight parts, and (C)/((C)null(D))null0.05-0.9, Component (E): A catalytic platinum selected from a group comprising platinum and platinum compounds, 0.1-500 ppm relative to Component (A) calculated in terms of platinum atom, Component (F): 0.001-5 weight parts of a controlling agent which suppresses the catalytic activity of Component (E).
Abstract:
A composition of matter for depositing a thin anti-friction film that has a coefficient of friction of 0.06 or less. The composition comprises (a) a mixture of solid lubricant particles, a thermoset resin, and a catalyst for setting the resin, and (b) an evaporative medium for carrying the mixture during deposition. A solid film lubricant system for protecting metal wear interfaces subject to high temperatures and wet lubrications, comprising an oil-attracting solid lubricant mixture with at least two elements selected from the group of graphite, MoS.sub.2 and BN; a support for the mixture to loads of at least 10 psi at temperatures of 600.degree.-800.degree. F. while being thermally stable; a thermally stable thermoset polymer matrix, the polymer having inherent hydrocarbon chemical attraction to form a tenacious oil film of the lubricating oil on the wearing surface. A method of making anti-friction coated surfaces comprising providing a light metal based cylinder surface; exposing nonoxidized metal of the surface; applying a high elastic modulus load-supporting metal layer onto at least portions of the light metal cylinder surface; and simultaneously distributing a solvent-based solid film lubricant mixture and thermoset polymer onto at least portions of the layer at about room temperature to form a coating of desired thickness.
Abstract:
A lubricant for the topical application to objects that will contact various forms of water, e.g., liquid, snow, ice, or mixtures thereof, to reduce friction and thereby increase speed, glide and maneuverability. The lubricant consists essentially of hexagonal boron nitride and a binder of single or mixed oxides or organics, the boron nitride content (after drying) being from about 36 wt. % to about 99 wt. %. Binders of particular interest are water-based colloidal aluminum oxide and colloidal silicon dioxide. This lubricant is suitable for topical applications in a thin layer to various sports objects, such as skis, snowboards, ice skates, snowmobiles, toboggans, sleds, boats, etc., where reduced friction, and thus higher speed, glide and maneuverability is desired. Although a solid stick form (by drying or pressure-less sintering) is preferred, the lubricant can be in the form of a paste or a powder. Further, this lubricant can be incorporated into waxes of the type previously used for friction reduction to obtain the benefit of both.
Abstract:
A noble metal and solid-phase lubricant composition and an an electrically conductive interconductor including the electrically conductive composition are disclosed. The electrically conductive composition includes a noble metal component and a solid-phase lubricant component. The solid-phase lubricant component is present in an amount sufficient to cause the electrically conductive composition to have a coefficient of friction which is significantly lower than the coefficient of friction of the noble metal component without causing the electrically conductive composition to be significantly less malleable than the noble metal component, nor to be significantly less corrosion resistant than the noble metal component. The electrically conductive composition can form a contact layer of the electrically conductive interconnector. The contact layer is bonded to a diffusion barrier which, in turn, is bonded to a bulk electrical conductor of the electrically conductive interconnector.
Abstract:
A solid lubricating composition useful for lubricating the flanges of railcar wheels and rails and for other similar applications. The lubricant composition comprises from about 16% to about 25% by weight of a polymeric carrier, from about 49% to about 63% of a lubricating oil, from about 10% to about 16% of a solid lubricating powder, and from about 6% to about 16% of a surface active agent, all percentages by weight of the total composition. The solid lubricant composition is mixed and introduced into a screw type extruder wherein it is heated and extruded through a die into a waterbath, forming an elastic rod or strand. The lubricant composition is applied to a surface to be lubricated by rubbing it onto the surface in a thin film. The surface active agent enhances the attachment and embedment of the dry lubricating powder into the surface being lubricated, the lubricant composition serving to reduce both wear and friction between contacting surfaces lubricated thereby.
Abstract:
The application of carbon fluoride chloride in dry lubricant compositions is disclosed. The material offers a substantial improvement in lubricating properties over prior art carbon fluoride dry lubricants.The improved lubricant is comprised of carbon fluoride chloride of the general formula (C.sub.y F.sub.x Cl.sub.z).sub.n wherein y is 1 or 2, x is greater than 0 to 1.2, z is 0.1 and n defines an infinitely large two dimensional array of repeating units occurring in this molecule of high molecular weight. The resulting lubricant has improved lubricating properties over graphite, MoS.sub.2 and carbon monofluoride.
Abstract:
A biphasic nanoporous vitreous carbon material with a cementitious morphology characterized by presence of non-round porosity, having superior hardness and tribological properties, as useful for high wear-force applications. The biphasic nanoporous vitreous carbon material is produced by firing, under inert atmosphere, of particulate vitrified carbon in a composition containing (i) a precursor resin that is curable and pyrolyzable to form vitreous carbon and, optionally, (ii) addition of one or more of the following: solid lubricant, such as graphite, boron nitride, or molybdenum disulfide; a heat-resistant fiber reinforcement, such as copper, bronze, iron alloy, graphite, alumina, silica, or silicon carbide; or one or more substances to improve electrical conductivity, such as dendritic copper powder, copper ''felt'' or graphite flake, to produce a superior vitreous carbon that is useful alone or as a continuous phase in reinforced composites, in relation to conventional glassy carbon materials.
Abstract:
본 발명은, 코팅부 이외의 부품을 오염시키거나, 장시간에 걸쳐 사용한 경우에도 유상물이 누출되거나 하는 것을 방지할 수 있고, 열전도성이 우수한 충분히 얇은 경화물, 및 경화되어 상기 경화물이 되는 열전도성 실리콘 그리스 조성물을 제공한다. 상기 열전도성 실리콘 그리스 조성물은, (A) 규소 원자 결합 알케닐기를 1 분자 중에 2개 이상 갖는 오르가노폴리실록산: 100 질량부, (B) 규소 원자 결합 수소 원자를 1 분자 중에 2개 이상 갖는 오르가노히드로겐폴리실록산: (A) 성분 중의 알케닐기 1개에 대하여 (B) 성분 중의 규소 원자에 결합한 수소 원자의 개수가 0.1 내지 5.0개가 되는 양, (C) 열전도성 충전제: 100 내지 2200 질량부, (D) 백금계 촉매: 유효량, 및 (E) 부가 반응 억제제: 유효량 을 함유하여 이루어지고, 상기 (C) 성분은 평균 입경 0.1 내지 100 ㎛의 인듐 분말을 90 질량% 초과 100 질량% 이하로 포함한다. 열전도성 실리콘 그리스 조성물, 열전도성 충전제, 인듐 분말
Abstract:
Iron-based metallurgical powder compositions are produced by mixing iron-based powder with an improved binder/lubricant that comprises dibasic organic acid and one or more additional components such as solid polyethers, liquid polyethers, and acrylic resin. These novel binder/lubricants impart one or more enhanced green properties to the powder compositions and reduce the ejection force required to remove the compositions from molds and dies.
Abstract in simplified Chinese:含铁冶金粉末组成物系制备于混合铁粉末与一改良的结合剂/润滑剂,结合剂/润滑剂系包括二元有机酸和一或多个如固体聚醚,液体聚醚和丙烯酸树脂等额外成份。这些新颖结合剂/润滑剂赋予粉末组成物一或多种获得增强的生胚性质,并减少从模具和模子移开组成物所需要的退出压力。